TY - CONF A1 - Rurack, Knut T1 - Novel Modular Sensors: Design of Efficient Probes for Various Analytes Utilizing the Phenoxazinone Chromophore T2 - Tag der Chemie CY - Potsdam, Germany DA - 2004-07-07 PY - 2004 AN - OPUS4-5353 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rurack, Knut A1 - Monte, Christian T1 - Metallionen auf der Spur KW - Fluoreszenzsonden KW - Schwermetalle KW - Übergangsmetalle KW - Faseroptik PY - 2006 SN - 0344-1733 SN - 1610-8256 IS - 1/2 SP - 20 EP - 22 PB - Vogel CY - Würzburg AN - OPUS4-12179 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Ros-Lis, J.V. A1 - Martínez-Mánez, Ramon A1 - Rurack, Knut A1 - Sancenón, F. A1 - Soto, J. A1 - Spieles, Monika T1 - Highly Selective Chromogenic Signaling of Hg2+ in Aqueous Media at Nanomolar Levels Employing a Squaraine-Based Reporter N2 - A chromogenic chemosensor for Hg2+ detection in aqueous media at the nanomolar level has been developed from squaraine scaffoldings. KW - Quecksilber KW - Absorption KW - Fluoreszenz KW - Squarain-Farbstoffe KW - Aggregate KW - Chromoionophor PY - 2004 DO - https://doi.org/10.1021/ic049422q SN - 0020-1669 SN - 1520-510X VL - 43 IS - 17 SP - 5183 EP - 5185 PB - American Chemical Society CY - Washington, DC AN - OPUS4-4124 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rurack, Knut A1 - Kollmannsberger, M. A1 - Daub, J. T1 - Molekulares Schalten im nahen Infrarot (NIR) mit einem funktionalisierten Bordipyrromethen-Farbstoff KW - Molekularer Schalter KW - Solvatochromie KW - Donor-Akzeptor-System KW - Elektrochromie PY - 2001 DO - https://doi.org/10.1002/1521-3757(20010119)113:2<396::AID-ANGE396>3.0.CO;2-W SN - 0044-8249 SN - 0932-2140 SN - 1521-3757 VL - 113 IS - 2 SP - 396 EP - 399 PB - Wiley-VCH CY - Weinheim AN - OPUS4-1077 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Climent Terol, Estela A1 - Gotor, Raul A1 - Tobias, Charlie A1 - Bell, Jérémy A1 - Martin-Sanchez, Pedro A1 - Rurack, Knut T1 - Dip Sticks Embedding Molecular Beacon-Functionalized Core−Mesoporous Shell Particles for the Rapid On-Site Detection of Microbiological Fuel Contamination N2 - Microbial contamination of fuels by fungi and bacteria presents risks of corrosion and fuel system fouling. In this work, a rapid test for the determination of microbial genomic DNA from aqueous fuel extracts is presented. It combines test strips coated with polystyrene core/mesoporous silica shell particles, to the surface of which modified fluorescent molecular beacons are covalently grafted, with a smartphone detection system. In the hairpin loop, the beacons incorporate a target sequence highly conserved in all bacteria, corresponding to a fragment of the 16S ribosomal RNA gene, which is also present to a significant extent in the 18S rRNA gene of fungi, allowing for broadband microbial detection. In the developed assay, the presence of genomic DNA extracts from bacteria and fungi down to ca. 20−50 μg L−1 induced a distinct fluorescence response. The optical read-out was adapted for on-site monitoring by combining a 3D-printed case with a conventional smartphone, taking advantage of the sensitivity of contemporary complementary metal oxide semiconductor (CMOS) detectors. Such an embedded assembly allowed to detect microbial genomic DNA in aqueous extracts down to ca. 0.2−0.7 mg L−1 and presents an important step toward the on-site uncovering of fuel contamination in a rapid and simple fashion. KW - Bacteria KW - Fungi KW - Rapid test KW - Fluorescence KW - Smartphone KW - Biofouling PY - 2020 DO - https://doi.org/10.1021/acssensors.0c01178 SN - 2379-3694 VL - 6 IS - 1 SP - 27 EP - 34 PB - American Chemical Society CY - Washington, DC AN - OPUS4-51956 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Sensory Molecularly Imprinted Polymers for the Selective Detection of Carboxylates through Fluorescence Modulation T2 - Europt(r)ode XII CY - Athens, Greece DA - 2014-04-13 PY - 2014 AN - OPUS4-30786 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Shen, Z. A1 - Uno, H. A1 - Ono, N. A1 - Rurack, Knut A1 - Daub, J. T1 - Synthesis, electrochemical and spectroscopic studies on a new class of boron dipyrromethene based fluoroionophores PY - 2002 VL - 18 SP - 100 EP - 102 (Suppl. A) PB - Elsevier CY - Amsterdam AN - OPUS4-2082 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Ros-Lis, J.V. A1 - Marcos, M. Dolores A1 - Martínez-Mánez, Ramon A1 - Rurack, Knut A1 - Soto, J. T1 - Ein regeneratives Chemodosimeter für die hoch selektive und empfindliche optische Bestimmung von Hg2+, basierend auf der metallinduzierten Bildung eines Farbstoffes KW - Fluorometrischer Nachweis KW - Chromogener Nachweis KW - Quecksilber KW - Chemodosimeter PY - 2005 SN - 0044-8249 SN - 0932-2140 SN - 1521-3757 VL - 117 IS - 28 SP - 4479 EP - 4482 PB - Wiley-VCH CY - Weinheim AN - OPUS4-10379 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Ros Lis, J.V. A1 - Martínez-Mánez, Ramon A1 - Rurack, Knut A1 - Soto, J. T1 - A regenerative chemodosimeter based on metal-induced dye formation for the highly selective and sensitive optical detection of Hg2+ KW - Chemodosimeter KW - Chromogener Nachweis KW - Fluormetrischer Nachweis KW - Quecksilber PY - 2005 DO - https://doi.org/10.1002/anie.200500583 SN - 1433-7851 SN - 1521-3773 SN - 0570-0833 N1 - Sprachen: Deutsch/Englisch - Languages: German/English VL - 44 SP - 4405 EP - 4407 PB - Wiley-VCH CY - Weinheim AN - OPUS4-11006 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rurack, Knut A1 - Kollmannsberger, M. A1 - Daub, J. T1 - Molecular Switching in the Near Infrared (NIR) with a Functionalized Boron-Dipyrromethene Dye PY - 2001 DO - https://doi.org/10.1002/1521-3773(20010119)40:2<385::AID-ANIE385>3.0.CO;2-F SN - 1433-7851 SN - 1521-3773 SN - 0570-0833 VL - 40 IS - 2 SP - 385 EP - 387 PB - Wiley-VCH CY - Weinheim AN - OPUS4-1078 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rurack, Knut A1 - Koval´chuk, A. A1 - Bricks, J.L. A1 - Slominskii, J.L. T1 - A simple bifunctional fluoroionophore signaling different metal ions either independently or cooperatively PY - 2001 DO - https://doi.org/10.1021/ja015560s SN - 0002-7863 SN - 1520-5126 VL - 123 SP - 6205 EP - 6206 PB - American Chemical Society CY - Washington, DC AN - OPUS4-1181 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Ros-Lis, J.V. A1 - Martínez-Mánez, Ramon A1 - Sancenón, F. A1 - Soto, J. A1 - Spieles, Monika A1 - Rurack, Knut T1 - Aquaraines as reporter units: insights into their photophysics, protonation, and metal-ion coordination behaviour KW - Dyes/pigments KW - Fluorescence KW - Metal ions KW - Protonation KW - Squaraines KW - Farbstoffe KW - Fluoreszenz KW - Metallionen KW - Protonierung PY - 2008 DO - https://doi.org/10.1002/chem.200800300 SN - 0947-6539 SN - 1521-3765 VL - 14 SP - 10101 EP - 10114 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-18444 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kovalchuck, Anton V. A1 - Bricks, Julia A1 - Reck, Günter A1 - Rurack, Knut A1 - Schulz, Burkhard A1 - Szumna, A. A1 - Weißhoff, Hardy T1 - A charge transfer-type fluorescent molecular sensor that "lights up" in the visible upon hydrogen bond-assisted complexation of anions PY - 2004 DO - https://doi.org/10.1039/b405207b SN - 0022-4936 SN - 0009-241x SN - 1359-7345 SN - 1364-548x SP - 1946 EP - 1947 PB - Royal Society of Chemistry CY - Cambridge AN - OPUS4-4123 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Bierstedt, Andreas A1 - Panne, Ulrich A1 - Rurack, Knut A1 - Riedel, Jens T1 - Characterization of two modes in a dielectric barrier discharge probe by optical emission spectroscopy and time-of-flight-mass spectrometry N2 - Among the large number of new ambient ionization schemes in the last few years, dielectric barrier discharge (DBD) has witnessed special attention. In this contribution a versatile dual mode DBD is introduced and characterized by means of optical emission spectroscopy and time-of-flight mass spectrometry. A direct comparison of the individual results from spectroscopy, spectrometry and transient current/voltage consumption gives evidence for the existence of two individual operational mechanisms. The first is driven by rapid transient changes in the potential difference between the two electrodes over time (usually denoted as the homogeneous mode), while the second is caused at high static potential differences (leading to filamentary discharges). The transient versus steady-state characteristics of the individual discharge origin suggest the driving force for the current flow to be inductive and capacitive, respectively. In most cases of dielectric barrier plasmas both discharge types coexist as competitive ion formation channels, however, detailed plasma characteristics of DBDs operated under different conditions allow for a clear distinction of the individual contributions. In this way, two characteristic product channels for the ionization of ambient water could be observed resulting in the generation of either preferentially protonated water clusters or ammonium water clusters. Careful tuning of the operation parameters of the discharge device allows an operation predominated by either of the two modes. As a consequence, facile switching into the desired operational mode results in either protonated molecules or ammoniated molecules of the analyte. Plasma characteristics for both moieties were evaluated and cross-correlated on the basis of several factors including: the production of reagent ions, the individual appearance of current/voltage profiles, UV/Vis spectroscopy, voltage and flux dependence and the individual response to test compounds. Although the filamentary mode has been already discussed in the literature to induce fragmentation processes, no experimental evidence for analyte dissociation could be found in the case of the test compounds used KW - Dual mode KW - Dielectric barrier discharge KW - Ambient desorption/ionization mass spectrometry KW - Emission spectroscopy KW - Ionization PY - 2015 DO - https://doi.org/10.1039/C5JA00332F SN - 0267-9477 SN - 1364-5544 VL - 30 IS - 12 SP - 2496 EP - 2506 PB - Royal Society of Chemistry CY - London AN - OPUS4-35092 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Calero, P. A1 - Hecht, Mandy A1 - Martínez-Mánez, Ramon A1 - Sancenón, F. A1 - Soto, J. A1 - Vivancos, J.L. A1 - Rurack, Knut T1 - Silica nanoparticles functionalised with cation coordination sites and fluorophores for the differential sensing of anions in a quencher displacement assay (QDA) N2 - In conjunction with quenching metal ions, silica nanoparticles carrying terpyridine coordination sites and sulforhodamine B signalling units were employed for the differential fluorometric recognition of anions. KW - Hybridmaterial KW - Silica-Nanopartikel KW - Fluoreszenz KW - Anionen KW - Verdrängungsassay PY - 2011 DO - https://doi.org/10.1039/c1cc13039k SN - 0022-4936 SN - 0009-241x SN - 1359-7345 SN - 1364-548x VL - 47 IS - 38 SP - 10599 EP - 10601 PB - Royal Society of Chemistry CY - Cambridge AN - OPUS4-24489 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - On the Integration of Fluorescent Probes with Molecularly Imprinted Polymers for Powerful Sensor Materials N2 - Molecularly imprinted polymers (MIPs) are an established and powerful matrix for the selective enrichment and separation of chemical species, especially of small organic molecules. Because MIPs contain cavities in their matrix that are complementary in size, shape and electronic/electrostatic or hydrogen bonding demand to the imprinted target molecule or template, they are frequently termed “artificial antibodies”. Compared to natural antibodies, they are chemically and physically much more robust. MIP formation proceeds through the polymerization of a mixture of functional monomers and cross-linkers in the presence of the template with subsequent extraction of the latter. While this strategy has been successfully employed for separation MIPs since decades, the development of sensory MIPs has long been limited to the combination of a MIP as enrichment phase with a separate signalling element in a discontinuous fashion, being unsuitable for many sensing applications. Only very recently, the implementation of specifically designed fluorescent probes into MIPs has been successfully accomplished, fluorescence being one of the most versatile, sensitive and easily miniaturizable techniques. This presentation will introduce basic design considerations, challenges, limitations and the potential that lies with such sensor materials on the background of the work carried out in our group. T2 - Bioinspired Materials 2017 CY - Manchester, UK DA - 31.08.2017 KW - Molecular imprinting KW - Dyes KW - Fluorescence KW - Sensing PY - 2017 AN - OPUS4-42260 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Ros Lis, J.V. A1 - Martínez-Mánez, Ramon A1 - Rurack, Knut A1 - Soto, J. T1 - A regenerative chemodosimeter based on metal-induced dye formation for the highly selective and sensitive optical detection of Hg2+ KW - Fluormetrischer Nachweis KW - Chromogener Nachweis KW - Quecksilber KW - Chemodosimeter PY - 2005 DO - https://doi.org/10.1002/ange.200500583 SN - 0044-8249 SN - 0932-2140 SN - 1521-3757 VL - 117 SP - 4479 EP - 4482 PB - Wiley-VCH CY - Weinheim AN - OPUS4-7282 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Climent Terol, Estela A1 - Marcos, D. A1 - Martínez-Mánez, Ramon A1 - Sancenón, F. A1 - Soto, J. A1 - Rurack, Knut A1 - Amorós, P. T1 - The determination of methylmercury in real samples using organically capped mesoporous inorganic materials capable of signal amplification KW - Chemosensors KW - Fluorescence KW - Mesoporous materials KW - Methylmercury KW - Methylquecksilber KW - Sensoren KW - Mesoporöse Materialien KW - Fluoreszenz KW - Hybridmaterialien PY - 2009 DO - https://doi.org/10.1002/anie.200904243 SN - 1433-7851 SN - 1521-3773 SN - 0570-0833 VL - 48 IS - 45 SP - 8519 EP - 8522 PB - Wiley-VCH CY - Weinheim AN - OPUS4-20308 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Martínez-Mánez, Ramon A1 - Sancenón, F. A1 - Hecht, Mandy A1 - Biyikal, Mustafa A1 - Rurack, Knut T1 - Nanoscopic optical sensors based on functional supramolecular hybrid materials N2 - This review highlights how the combination of supramolecular principles and nanoscopic solid structures enables the design of new hybrid sensing ensembles with improved sensitivity and/or selectivity and for the targeting of analytes for which selectivity is hard to achieve by conventional methods. Such ideas are bridging the gap between molecules, materials sciences and nanotechnology. Relevant examples will be detailed, taking into account functional aspects such as (1) enhanced coordination of functionalized solids, (2) enhanced signalling through preorganization, (3) signalling by assembly–disassembly of nanoscopic objects, (4) biomimetic probes utilizing discrimination by polarity and size and (5) distinct switching and gating protocols. These strategies are opening new prospects for sensor research and signalling paradigms at the frontier between nanotechnology, smart materials and supramolecular chemistry. KW - Supramolecular chemistry KW - Optical probes KW - Nanotechnology KW - Hybrid organic-inorganic materials PY - 2011 DO - https://doi.org/10.1007/s00216-010-4198-2 SN - 1618-2642 SN - 1618-2650 VL - 399 IS - 1 SP - 55 EP - 74 PB - Springer CY - Berlin AN - OPUS4-22908 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Ritter, B. A1 - Haida, P. A1 - Fink, F. A1 - Krahl, T. A1 - Gawlitza, Kornelia A1 - Rurack, Knut A1 - Scholz, G. A1 - Kemnitz, E. T1 - Novel and easy access to highly luminescent Eu and Tb doped ultra-small CaF2, SrF2 and BaF2 nanoparticles – structure and luminescence N2 - A universal fast and easy access at room temperature to transparent sols of nanoscopic Eu3+ and Tb3+ doped CaF2, SrF2 and BaF2 particles via the fluorolytic sol–gel synthesis route is presented. Monodisperse quasi-spherical nanoparticles with sizes of 3–20 nm are obtained with up to 40% rare earth doping showing red or green luminescence. In the beginning luminescence quenching effects are only observed for the highest content, which demonstrates the unique and outstanding properties of these materials. From CaF2:Eu10 via SrF2:Eu10 to BaF2:Eu10 a steady increase of the luminescence intensity and lifetime occurs by a factor of ≈2; the photoluminescence quantum yield increases by 29 to 35% due to the lower phonon energy of the matrix. The fast formation process of the particles within fractions of seconds is clearly visualized by exploiting appropriate luminescence processes during the synthesis. Multiply doped particles are also available by this method. Fine tuning of the luminescence properties is achieved by variation of the Ca-to-Sr ratio. Co-doping with Ce3+ and Tb3+ results in a huge increase (>50 times) of the green luminescence intensity due to energy transfer Ce3+ → Tb3+. In this case, the luminescence intensity is higher for CaF2 than for SrF2, due to a lower spatial distance of the rare earth ions. KW - Luminescence materials KW - Alkaline earth metal fluorides KW - Fluorolytic sol–gel synthesis PY - 2017 DO - https://doi.org/10.1039/C6DT04711D VL - 46 IS - 9 SP - 2925 EP - 2936 PB - Royal Society of Chemistry AN - OPUS4-39286 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Röhr, Holger A1 - Trieflinger, C. A1 - Rurack, Knut A1 - Daub, J. T1 - Proton- and Redox-Controlled Switching of Photo- and Electrochemiluminescence in Thiophenyl-Substituted Boron-Dipyrromethene Dyes N2 - A luminescent molecular switch in which the active thiol/disulfide switching element is attached to a meso-phenyl-substituted boron-dipyrromethene (BDP) chromophore as the signalling unit is presented. The combination of these two functional units offers great versatility for multimodal switching of luminescence: 1) deprotonation/protonation of the thiol/thiolate moiety allows the highly fluorescent meso-p-thiophenol-BDP and its nonfluorescent thiolate analogue to be chemically and reversibly interconverted, 2) electrochemical oxidation of the monomeric dyes yields the fluorescent disulfide-bridged bichromophoric dimer, also in a fully reversible process, and 3) besides conventional photoexcitation, the well separated redox potentials of the BDP also allow the excited BDP state to be generated electrochemically (i.e., processes 1) and 2) can be employed to control both photo- and electrochemiluminescence (ECL) of the BDP). The paper introduces and characterizes the various states of the switch and discusses the underlying mechanisms. Investigation of the ortho analogue of the dimer provided insight into potential chromophore-chromophore interactions in such bichromophoric architectures in both the ground and the excited state. Comparison of the optical and redox properties of the two disulfide dimers further revealed structural requirements both for redox switches and for ECL-active molecular ensembles. By employing thiol/disulfide switching chemistry and BDP luminescence features, it was possible to create a prototype molecular ensemble that shows both fully reversible proton- and redox-gated electrochemiluminescence. KW - Boron-dipyrromethene KW - Electrochemiluminescence KW - Fluorescence KW - Molecular switches KW - Redox chemistry KW - Thiol/disulfide chemistry KW - Fluoreszenz KW - Elektrochemilumineszenz KW - Redox-Kontrolle KW - Molekulare Sensoren PY - 2006 DO - https://doi.org/10.1002/chem.200500729 SN - 0947-6539 SN - 1521-3765 VL - 12 IS - 3 SP - 689 EP - 700 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-12175 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rurack, Knut A1 - Kollmannsberger, M. A1 - Daub, J. T1 - A highly efficient sensor molecule emitting in the near infrared (NIR): 3,5-distyryl-8-(p-dimethylaminophenyl)-difluoroboradiaza-s-indacene N2 - The spectroscopic properties and the photophysical behaviour of difluoroboradiaza-s-indacene 1, especially designed for the near infrared (NIR) spectral region and equipped with a p-dimethylaminophenyl group at the meso-position, were studied by steady-state and time-resolved optical spectroscopy. Solvent-dependent measurements revealed that for 1, excited state deactivation is governed by population of a non-emissive charge transfer excited state (1CT) as the solvent polarity increases, whereas reference compound 2 shows strong fluorescence from a locally excited state (1LE) in all the solvents employed. Accordingly, protonation of 1 completely suppresses the quenching excited state charge transfer process and leads to strong enhancement of fluorescence in the NIR, distinguishing 1 as a very sensitive fluorescent sensor molecule for pH or solvent acidity in this favourable wavelength region. PY - 2001 DO - https://doi.org/10.1039/b007379m SN - 0398-9836 VL - 25 SP - 289 EP - 292 PB - Le Centre National de la Recherche Scientifique CY - Paris AN - OPUS4-1085 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rurack, Knut T1 - Flipping the light switch 'ON' - the design of sensor molecules that show cation-induced fluorescence enhancement with heavy and transition metal ions N2 - Real-time and real-space analysis of heavy and transition metal ions employing fluorescent sensor molecules has received much attention over the past few years. Since many of these cations possess intrinsic properties that usually quench the fluorescence of organic dye molecules, a lot of research has lately been devoted to designing fluorescent probes that show complexation-induced fluorescence enhancement. Such an analytical reaction would be highly desirable in terms of increased sensitivity and selectivity. However, in this particular field of sensor research, the photophysical and photochemical mechanisms involved as well as the chemical constitutions of the sensor molecules employed are rather diverse and up to now, very few attempts have been made to establish some general concepts for rational probe design. By analyzing various systems published by other researchers as well as own work, this contribution aims at an elucidation of some of the underlying principles of heavy and transition metal ion-enhanced emission. KW - Fluorescent probes KW - Molecular recognition KW - Fluorescence enhancement KW - Fluorescence quenching KW - Heavy metal ions KW - Transition metal ions PY - 2001 DO - https://doi.org/10.1016/S1386-1425(01)00492-9 SN - 1386-1425 SN - 0370-8322 SN - 1873-3557 SN - 0584-8539 VL - 57 IS - 11 SP - 2161 EP - 2195 PB - Elsevier CY - Amsterdam AN - OPUS4-1182 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Towards simple and efficient molecular reporters by combining electron and/or charge transfer processes in fluorescent bifunctional dyes T2 - 57th Southwest Regional Meeting CY - San Antonio, TX, USA DA - 2001-10-17 KW - Donor-Acceptor-Systems KW - Heterocycles KW - Electron Transfer KW - Fluorescence KW - Chelates PY - 2001 VL - 57 SP - 1(?) EP - 2(?) AN - OPUS4-1183 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rurack, Knut T1 - Fluoreszenzmarker für Schwer- und Übergangsmetallionen: Selektivität durch gezieltes Rezeptordesign und Ionen-spezifische Fluoreszenzverstärkung KW - Fluoreszenzmarker KW - Schwermetalle KW - Rezeptoren PY - 2000 SN - 0937-1478 SN - 1521-3811 VL - 54 IS - 6 SP - 148 EP - 149 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-1050 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rurack, Knut A1 - Bricks, J. L. A1 - Reck, Günter A1 - Schulz, Burkhard A1 - Spieles, Monika T1 - Cation coordination of bisamidopyridine-derived receptors as investigated in the solid-state and in solution N2 - A bisamidopyridine-type receptor, N,N'-bis(6-methyl-2-pyridyl)pyridine-2,6-dicarboxamide (1), and its CoIII complex were prepared and their X-ray structures were compared to those of N,N'-diphenylpyridine-2,6-dicarboxamide (2) and CoIII(2)2. Introduction of the two additional coordinative groups resulted in second-order interactions between the central ion and the nitrogen atoms of the terminal pyridine moieties in the crystalline state. Solution studies in acetonitrile revealed the importance of these interactions for the ligand's metal ion recognition ability. Whereas 2 only binds to PbII and CuII, 1 yields complexes with a majority of the heavy and transition metal ions studied, CoII, NiII, CuII, ZnII, FeIII, FeII, HgII, and PbII, respectively. The cation binding properties in solution were investigated by absorption spectroscopy and in the case of 1-MII/III, the formation of two spectroscopically distinguishable types of complexes was found. Protonation experiments and theoretical considerations helped to gain further insight into possible modes of coordination in solution. KW - Pyridine carboxamides KW - Ion recognition KW - Crystal structure KW - N-coordination PY - 2003 DO - https://doi.org/10.1080/1061027031000078239 SN - 1061-0278 SN - 1029-0478 VL - 15 IS - 3 SP - 189 EP - 197 PB - Gordon and Breach Science Publ. CY - New York, NY AN - OPUS4-2106 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Descalzo, Ana B. A1 - Martínez-Mánez, Ramon A1 - Radeglia, Reiner A1 - Rurack, Knut A1 - Soto, J. T1 - Coupling Selectivity with Sensitivity in an Integrated Chemosensor Framework: Design of a Hg2+-Responsive Probe, Operating above 500 nm N2 - For the highly selective and sensitive sensing of Hg2+ in water, a new design concept was realized where the selectivity of the probe's binding site is amplified by electronic properties of the chromophore. The molecular architecture of this phenoxazinone-type sensor molecule combines two potential coordination sites via an amino-keto conjugative backbone. These structural prerequisites allow only the most preferred mercuric ion to bind to the dithia dioxa monoaza crown unit, while other heavy, transition, and main group metal ions as well as protons are trapped at the keto group, inducing opposite spectral effects due to interaction with either the donor (Hg2+) or the acceptor group (other cations) of the probe. Besides these advantageous features, the probe operates well within the visible range of the spectrum and displays rather intense molar absorptivities as well as fluorescence quantum yields. PY - 2003 DO - https://doi.org/10.1021/ja0290779 SN - 0002-7863 SN - 1520-5126 VL - 125 IS - 12 SP - 3418 EP - 3419 PB - American Chemical Society CY - Washington, DC AN - OPUS4-2377 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rurack, Knut A1 - Danel, A. A1 - Rotkiewicz, K. A1 - Grabka, D. A1 - Spieles, Monika A1 - Rettig, W. T1 - 1,3-Diphenyl-1H-pyrazolo[3,4-b]quinoline - A Versatile Fluorophore for the Design of Brightly Emissive Molecular Sensors N2 - The 1,3-diphenyl-1H-pyrazolo[3,4-b]-quinoline chromophore is a versatile building block for the construction of brightly fluorescent molecular sensors. Facile synthetic procedures allow integration of the chromophore into fluorophore-spacer-receptor systems as well as fluoroionophores operating via intramolecular charge transfer. Whereas the former photoinduced electron-transfer probes show strong analyte-induced fluorescence enhancement, the latter exhibit bright ratiometric dual emission. Employing prototype macrocyclic receptors, the favorable signaling features for metal ion recognition are demonstrated. PY - 2002 DO - https://doi.org/10.1021/ol027025i SN - 1523-7060 SN - 1523-7052 VL - 4 IS - 26 SP - 4647 EP - 4650 PB - American Chemical Society CY - Washington, DC AN - OPUS4-2107 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - García-Acosta, B. A1 - Albiach-Martí, X. A1 - García, E. A1 - Gil, R. A1 - Martínez-Mánez, Ramon A1 - Rurack, Knut A1 - Sancenón, F. A1 - Soto, J. T1 - Coordinative and electrostatic forces in action: from the design of differential chromogenic anion sensors to selective carboxylate recognition N2 - A new family of differential chromogenic anion chemosensors is described based on anilinopyridine–metal cation coordinative signalling ensembles KW - Differentielle Sensoren KW - Anionen KW - Carboxylat KW - Chromogene Sensoren KW - Koordinative Bindungen KW - Elektrostatische Wechselwirkungen PY - 2004 DO - https://doi.org/10.1039/b314997h SN - 0022-4936 SN - 0009-241x SN - 1359-7345 SN - 1364-548x IS - 7 SP - 774 EP - 775 PB - Royal Society of Chemistry CY - Cambridge AN - OPUS4-3438 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Fery-Forgues, S. A1 - Rurack, Knut A1 - Delavaux-Nicot, B. A1 - Lavabre, D. T1 - 1,3-Diphenyl-1H-pyrazolo[3,4-b]-quinoline (DPPQ)-a versatile fluorophore for the design of brightly emissive molecular sensors PY - 2002 SN - 1010-6030 SN - 1873-2666 PB - Elsevier CY - Lausanne AN - OPUS4-2108 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Bifunctional Molecular Reporters: Approaches towards Multi-Mode Fluorescence Signaling T2 - Gradulate College on Sensory Photoreceptors: "Sensory Photoreceptors in Natural and Artificial Systems" CY - Regensburg, Germany DA - 2002-01-09 PY - 2002 AN - OPUS4-2962 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Design Strategies for Efficient Fluorescent Molecular Sensors for Metal lons T2 - Workshop on Interactions between Biomolecules: From Chemistry to the Biological Target CY - Nimes, France DA - 2002-04-25 PY - 2002 AN - OPUS4-2964 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Einfache und effiziente Fluoro(metallo)ionophore auf der Basis von Elektronen- und Ladungstransferprozessen T2 - Universität Potsdam, Institut für Chemie CY - Potsdam, Germany DA - 2003-04-25 PY - 2003 AN - OPUS4-3757 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Simple and Efficient Fluoroionophores Based on Electron and/or Charge transfer Processes T2 - Polytechnische Universität Valencia, Institut für Chemie CY - Valencia, Spain DA - 2003-01-31 PY - 2003 AN - OPUS4-3758 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Macrocycles in a Different Light: The Influence of the Nature and Substitution Pattern of Heteroatoms on the Photophysics of Chromophore-Appended Crown Ethers T2 - 28th International Symposium on Macrocyclic Chemistry CY - Gdansk, Poland DA - 2003-07-13 PY - 2003 AN - OPUS4-4889 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Intramolecular Charge-Transfer Characteristics of Fluorescent Donor-[Ethynyl-Donor]n (n=1,2) Dyads and Triads T2 - 8th Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes CY - Prague, Czech Republic DA - 2003-08-24 PY - 2003 AN - OPUS4-4894 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Trieflinger, C. A1 - Rurack, Knut A1 - Daub, J. T1 - "Turn ON/OFF your LOV light": Bordipyrromethen-Flavin-Dyaden als biomimetische, von der LOV-Domäne abgeleitete Schalter KW - Boron-dipyrromethene KW - Flavin KW - Thiol/disulfide KW - Fluorescence KW - Molecular switching KW - Photoreceptor mimicks PY - 2005 SN - 0044-8249 SN - 0932-2140 SN - 1521-3757 VL - 117 IS - 15 SP - 2328 EP - 2331 PB - Wiley-VCH CY - Weinheim AN - OPUS4-7305 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - A hybrid chemosensor material for the colorimetric and fluorometric detection of long-chain carboxylates T2 - 9th Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes CY - Lisbon, Portugal DA - 2005-09-04 PY - 2005 AN - OPUS4-7428 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - A Chromo- and Fluorogenic Hybrid Chemosensor Material for the Detection of Long-chain Carboxylates T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-7427 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Bricks, J.L. A1 - Kovalchuck, Anton V. A1 - Trieflinger, C. A1 - Nofz, Marianne A1 - Büschel, M. A1 - Tolmachev, A.I. A1 - Daub, J. A1 - Rurack, Knut T1 - On the Development of Sensor Molecules that Display FeIII-amplified Fluorescence N2 - Incorporation of a tailor-made size-restricted dithia-aza-oxa macrocycle, 1-oxa-4,10-dithia-7-aza-cyclododecane, via a phenyl linker into two fluorescent sensor molecules with electronically decoupled, rigidly fixed, and sterically preoriented architectures, a 1,3,5-triaryl-2-pyrazoline and a meso-substituted boron-dipyrromethene (BDP), yields amplified fluorescence in the red-visible spectral range upon binding of FeIII ions. The response to FeIII and potentially interfering metal ions is studied in highly polar aprotic and protic solvents for both probes as well as in neat and buffered aqueous solution for one of the sensor molecules, the BDP derivative. In organic solvents, the fluorescence of both indicators is quenched by an intramolecular charge or electron transfer in the excited state and coordination of FeIII leads to a revival of their fluorescence without pronounced spectral shifts. Most remarkably, the unbound BDP derivative shows dual emission in water and can be employed for the selective ratiometric signaling of FeIII in buffered aqueous solutions. KW - Fluoreszenz KW - Eisen KW - Fluoreszenzmarker PY - 2005 DO - https://doi.org/10.1021/ja050652t SN - 0002-7863 SN - 1520-5126 VL - 127 SP - 13522 EP - 13529 PB - American Chemical Society CY - Washington, DC AN - OPUS4-12180 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hennrich, G. A1 - Rurack, Knut A1 - Spieles, Monika T1 - Reconfiguration of the Symmetry and Charge-Transfer Characteristics of a Triply Crowned 1,3,5-Tris(arylalkynyl)mesitylene by Successive Metal Ion Complexation N2 - A triply benzocrown-ether-functionalized trialkynylmesitylene derivative with C3 symmetry as well as its linear analogue have been synthesized and their optical properties have been studied by UV/Vis absorption, steady-state and time-resolved fluorescencece spectroscopy. The spectroscopic investigation of the uncomplexed compounds revealed the nature of the electronic and excitonic communication pathway in the ground and excited states of the all-meta-substituted chromophore system. Upon cation complexation, the octopolar character of the free trialkynyl compound becomes dipolar and finally returns to octopolar in the fully complexed species. KW - Acetylenic scaffolding KW - Donor-acceptor systems KW - Fluorescence spectroscopy KW - UV/Vis spectroscopy KW - Supramolecular chemistry PY - 2006 DO - https://doi.org/10.1002/ejoc.200500595 SN - 1434-193X SN - 1099-0690 VL - 2006 IS - 2 SP - 516 EP - 521 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-12171 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Trieflinger, C. A1 - Röhr, Holger A1 - Rurack, Knut A1 - Daub, J. T1 - Multiples Schalten und photogesteuerte Elektrochemilumineszenz einer Dihydroazulen-Bordipyrromethen-Dyade KW - Bordipyrromethen KW - Elektrochemilumineszenz KW - Fluoreszenz KW - Molekulare Schalter KW - Photochromie PY - 2005 DO - https://doi.org/10.1002/ange.200501573 SN - 0044-8249 SN - 0932-2140 SN - 1521-3757 VL - 117 IS - 42 SP - 7104 EP - 7107 PB - Wiley-VCH CY - Weinheim AN - OPUS4-12172 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rurack, Knut A1 - Trieflinger, C. A1 - Kovalchuck, Anton V. A1 - Daub, J. T1 - An ionically driven molecular IMPLICATION gate operating in fluorescence Mode N2 - An asymmetrically core-extended boron-dipyrromethene (BDP) dye was equipped with two electron-donating macrocyclic binding units with different metal ion preferences to operate as an ionically driven molecular IMPLICATION gate. A Na+-responsive tetraoxa-aza crown ether (R2) was integrated into the extended π system of the BDP chromophore to trigger strong intramolecular charge transfer (ICT2) fluorescence and guarantee cation-induced spectral shifts in absorption. A dithia-oxa-aza crown (R1) that responds to Ag+ was attached to the meso position of BDP in an electronically decoupled fashion to independently control a second ICT1 process of a quenching nature. The bifunctional molecule is designed in such a way that in the absence of both inputs, ICT1 does not compete with ICT2 and a high fluorescence output is obtained (InA=InB=0→Out=1). Accordingly, binding of only Ag+ at R1 (InA=1, InB=0) as well as complexation of both receptors (InA=InB=1) also yields Out=1. Only for the case in which Na+ is bound at R2 and R1 is in its free state does quenching occur, which is the distinguishing characteristic for the InA=0 and InB=1→Out=0 state that is required for a logic IMPLICATION gate and Boolean operations such as IF-THEN or NOT. KW - Charge transfer KW - Dyes/pigments KW - Fluorescence KW - Logic gates KW - Molecular devices PY - 2007 DO - https://doi.org/10.1002/chem.200700858 SN - 0947-6539 SN - 1521-3765 VL - 13 IS - 32 SP - 8998 EP - 9003 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-16085 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Martínez, R. A1 - Sancenón, F. A1 - Hoffmann, Katrin A1 - Rurack, Knut A1 - Descalzo López, Ana Belén T1 - Materiales híbridos en química analítica N2 - El desarrollo de receptores sintéticos complejos basados en conceptos de la química supramolecular no garantiza en ocasiones un reconocimiento molecular selectivo. Una alternativa en ciertos aspectos más simple y prometedora es el empleo de materiales híbridos orgánico-inorgánicos preparados mediante la funcionalización de sólidos inorgánicos porosos con receptores sintéticos adecuados. El anclaje de estos sistemas coordinantes a un soporte sólido da lugar a ciertos efectos sinérgicos que no están presentes ni en el material inicial ni en el receptor por separado y que sugieren que estos nuevos materiales híbridos pueden ser empleados en el desarrollo de nuevos sensores y nuevos protocolos de reconocimiento molecular y/o iónico. The development of synthetic receptors based in supramolecular chemistry concepts will no allow a selective molecular recognition. A more simple, convenient and innovative approach relies on the use of organic-inorganic hybrid materials. These hybrid materials will be prepared by the grafting of certain synthetic receptors onto porous inorganic solids. The grafting of these coordinating systems onto a solid support leads to synergic effects that are hardly achievable with only the synthetic receptors or the solids alone. The presence of these synergic effects suggests that these organic-inorganic hybrid materials will be used for the development of novel sensory systems and novel molecular and/or ionic recognitionprotocols. KW - Soportes inorgánicos KW - Receptores sintéticos KW - Materiales híbridos KW - Efectos sinérgicos KW - Química analítica KW - Inorganic supports KW - Synthetic receptors KW - Hybrid materials KW - Synergic effects KW - Analytical chemistry PY - 2007 SN - 1575-3417 VL - 103 IS - 4 SP - 22 EP - 27 PB - Springer AN - OPUS4-17512 LA - spa AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wu, D. A1 - Descalzo López, Ana Belén A1 - Weik, F. A1 - Emmerling, Franziska A1 - Shen, Z. A1 - You, X.-Z. A1 - Rurack, Knut T1 - A core-modified Rubyrin with meso-aryl substituents and phenanthrene-fused pyrrole rings: a highly conjugated near-infrared dye and Hg2+ probe KW - Fluorescence KW - Mercury KW - NIR dyes KW - Porphyrinoids KW - Sensors PY - 2008 DO - https://doi.org/10.1002/Anie.200702854 SN - 1433-7851 SN - 1521-3773 SN - 0570-0833 VL - 47 IS - 1 SP - 193 EP - 197 PB - Wiley-VCH CY - Weinheim AN - OPUS4-16448 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Descalzo López, Ana Belén A1 - Marcos, M. Dolores A1 - Monte, Christian A1 - Martínez-Mánez, Ramon A1 - Rurack, Knut T1 - Mesoporous silica materials with covalently anchored phenoxazinone dyes as fluorescent hybrid materials for vapour sensing KW - Anorganisch-organische Hybridmaterialien KW - Sensorik KW - Fluoreszenz KW - Flüchtige organische Verbindungen PY - 2007 DO - https://doi.org/10.1039/b707473e SN - 0959-9428 SN - 1364-5501 VL - 17 SP - 4716 EP - 4723 PB - Royal Society of Chemistry CY - Cambridge AN - OPUS4-16139 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Rurack, Knut A1 - Martínez-Mánez, Ramon ED - Charles M. Lukehart, ED - Robert A. Scott, T1 - Biomimetic chemistry of hybrid materials N2 - The article discusses representative examples published in the field of functional biomimetic chemistry of hybrid materials between 2004 and mid-2007. First, we focus on the modification of morphological aspects of (bio)organic–inorganic hybrid materials to create sophisticated gating and switching mechanisms. The architecture of the systems is presented and the elements of control by external stimuli that have been established in recent years, such as optical, electrochemical, chemical, thermal, or magnetic means, are described. Various functions ranging from (site-specific) delivery to indication at the nanometric level are reported. Next we develop the idea of utilizing hybrid frameworks for biomimetic signaling inspired by the way nature has created binding pockets and the concept of induced-fit. Such a merging of inorganic scaffolds with supramolecular concepts results in enhanced molecular recognition and signaling. Finally selected recent advances in the field of hybrid biomimetic motors both of linear and rotary types are presented. The contribution shows how novel biomimetic functions can arise from synergisms between specifically designed hybrid materials and the implementation of supramolecular and/or bioorganic concepts. KW - Biochemie KW - Biomimetika KW - DNA KW - Gold KW - Hybridmaterialien KW - Molekulare Schalter KW - Molekulare Motoren KW - Nanopartikel KW - Quantenpunkte KW - Schalter KW - Sensorik KW - Silica KW - Supramolekulare Chemie PY - 2008 SN - 978-0470-51644-7 SP - 31 EP - 50 PB - Wiley CY - Chichester AN - OPUS4-19213 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Biomimetically Inspired Sensing of Ionic and Neutral Species with Organically Modified Mesoporous Silica Materials T2 - First International Conference on Multifunctional, Hybrid and Nanomaterials CY - Tours, France DA - 2009-03-15 PY - 2009 AN - OPUS4-19133 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Functional red/NIR dyes and hybrid sensor materials T2 - Working Group Meeting, COST D-31, Working Group 001204 "New Materials for Anion Sensing", School of Chemistry CY - Birmingham, England DA - 2008-01-25 PY - 2008 AN - OPUS4-18547 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Rurack, Knut A1 - Martínez-Mánez, Ramon ED - Robert H. Crabtree, T1 - Functional supramolecular hybrid materials N2 - The combination of suitable nanoscopic inorganic supports with supramolecular concepts and bioconjugation strategies opens up exciting perspectives for the development of bioinorganic and organic–inorganic hybrid materials with improved functionalities. Many of the examples from the period 2004 to mid-2007 reviewed here bridge the gap between molecules, materials sciences, biochemistry, and nanotechnology. The synergistic use of these approaches has led to the advancement of various functions such as enhanced recognition, amplified signaling, the controlled assembly and disassembly of aggregates and 3-D architectures. Many of the implemented active functions can be carried out in a reversible and directed fashion on purpose by triggering with an external stimulus. These ideas bring tunability to properties of inorganic solids and new perspectives of application to biochemical and supramolecular concepts. Classic inorganic chemistries such as metal or semiconductor nanoparticles, silica or carbon materials, and coordination chemistry are thus elevated to another level of sophistication and contribute significantly to frontier research areas in directed transport and delivery, nanoelectronics and mechanics, chip technology, smart materials, memory devices, and bioanalytics. KW - Biochemie KW - Biomakromoleküle KW - DNA KW - Gold KW - Hybridmaterialien KW - Nanopartikel KW - Quantenpunkte KW - Selbstorganisation KW - Sensorik KW - Silica KW - Supramolekulare Chemie PY - 2009 DO - https://doi.org/10.1002/0470862106.ia400 SP - 1 EP - 23 PB - Wiley CY - Chichester AN - OPUS4-19847 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - BOOK A1 - Rurack, Knut A1 - Martínez-Mánez, Ramon T1 - Biomimetic chemistry of hybrid materials N2 - The article discusses representative examples published in the field of functional biomimetic chemistry of hybrid materials between 2004 and mid-2007. First, we focus on the modification of morphological aspects of (bio)organic–inorganic hybrid materials to create sophisticated gating and switching mechanisms. The architecture of the systems is presented and the elements of control by external stimuli that have been established in recent years, such as optical, electrochemical, chemical, thermal, or magnetic means, are described. Various functions ranging from (site-specific) delivery to indication at the nanometric level are reported. Next we develop the idea of utilizing hybrid frameworks for biomimetic signaling inspired by the way nature has created binding pockets and the concept of induced-fit. Such a merging of inorganic scaffolds with supramolecular concepts results in enhanced molecular recognition and signaling. Finally selected recent advances in the field of hybrid biomimetic motors both of linear and rotary types are presented. The contribution shows how novel biomimetic functions can arise from synergisms between specifically designed hybrid materials and the implementation of supramolecular and/or bioorganic concepts. KW - Biochemie KW - Biomimetika KW - DNA KW - Gold KW - Hybridmaterialien KW - Molekulare Schalter KW - Molekulare Motoren KW - Nanopartikel KW - Quantenpunkte KW - Schalter KW - Sensorik KW - Silica KW - Supramolekulare Chemie PY - 2009 DO - https://doi.org/10.1002/0470862106.ia420 SP - 1 EP - 20 PB - Wiley CY - Chichester AN - OPUS4-19846 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Development and Application of Particle-based Analytical Platforms for Photo- and Fluorometric Detection T2 - FUTURSEN 2009-Symposium, Universidad Complutense Madrid CY - Madrid, Spain DA - 2009-09-18 PY - 2009 AN - OPUS4-20430 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -