TY - CONF A1 - Hennecke, Manfred T1 - Laudatio aus Anlass des 60. Geburtstages von Prof. Dr. Wolf Görner T2 - Festkolloquium der DGZfP (Deutsche Gesellschaft für Zerstörungsfreie Prüfung) CY - Berlin, Germany DA - 2001-12-10 PY - 2001 AN - OPUS4-22986 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Laudatio aus Anlass der Verleihung des Georg-Manecke-Preises an Dr. Paolo Samori T2 - Berliner Verband für Polymerforschung, TU Berlin CY - Berlin, Germany DA - 2002-10-01 PY - 2002 AN - OPUS4-22987 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Rede zur Verabschiedung von MinRat Dr. Jürgen Schöttler T2 - Festkolloquium der PTB (Physikalisch-Technische Bundesanstalt) CY - Berlin, Germany DA - 2002-12-10 PY - 2002 AN - OPUS4-22988 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Laudatio zum Transferpreis Wissenswerte 2003 an Dr. Helmut Becker-Roß, Dr. Stefan Fleck (ISAS) und Michael Okruss (GFaO) T2 - Technologiestiftung Berlin CY - Berlin, Germany DA - 2003-08-30 PY - 2003 AN - OPUS4-22989 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Laudatio zum Transferpreis Wissenswerte 2004 an Dr. Götz Erbert und Team (FBI) T2 - Technologiestiftung Berlin CY - Berlin, Germany DA - 2004-06-21 PY - 2004 AN - OPUS4-22990 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Das aktuelle Innovationsklima in Berlin-Brandenburg T2 - Dr. Röver & Partner CY - Berlin, Germany DA - 2005-08-29 PY - 2005 AN - OPUS4-22991 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Laudatio zum Transferpreis 2005 an Prof. Dr. Petzelt und Prof. Dr. Kox (Charité) T2 - Technologiestiftung Berlin CY - Potsdam, Germany DA - 2005-08-30 PY - 2005 AN - OPUS4-22992 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - The German Federal Research Institutes and their role in policy advice T2 - BBAW (Berlin-Brandenburgische Akademie der Wissenschaften) CY - Berlin, Germany DA - 2006-01-14 PY - 2006 AN - OPUS4-22993 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Laudatio aus Anlass der Verleihung des Deutschen Gefahrgutpreises an Peter Steinbach T2 - Storck Verlag CY - Hamburg, Germany DA - 2006-02-20 PY - 2006 AN - OPUS4-22994 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Laudatio aus Anlass der Verleihung der Erich-Siebel-Gedenkmünze an Prof. Dr.-Ing. Christina Berger T2 - Deutscher Verband für Materialforschung und -prüfung CY - Berlin, Germany DA - 2006-05-11 PY - 2006 AN - OPUS4-22995 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Wissenschaftler in der Ressortforschung T2 - Deutsch-Französische Gesellschaft für Wissenschaft und Technik CY - Berlin, Germany DA - 2006-09-21 PY - 2006 AN - OPUS4-23001 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Die BAM in Berlin - Die Bundesanstalt für Sicherheit in Technik und Chemie T2 - VDMA (Verband Deutscher Maschinen- und Anlagenbau) CY - Berlin, Germany DA - 2007-01-23 PY - 2007 AN - OPUS4-23002 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Laudatio zum Transferpreis Wissenswerte 2007 an Prof. Dr. Rainer Müller (FU Berlin) T2 - Technologiestiftung Berlin CY - Berlin, Germany DA - 2007-01-29 PY - 2007 AN - OPUS4-23003 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Über Innovation T2 - Berliner Wirtschaftsgespräche CY - Berlin, Germany DA - 2007-05-07 PY - 2007 AN - OPUS4-23014 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Entwicklungen in der Materialprüfung T2 - Jubiläumsveranstaltung "100 Jahre Staatliche Materialprüfungsanstalt Darmstadt" CY - Darmstadt, Germany DA - 2007-06-22 PY - 2007 AN - OPUS4-23015 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Emil Heyn im Materialprüfungsamt Dahlem T2 - Festkolloquium zu Ehren Emil Heyns CY - Annaberg-Buchholz, Germany DA - 2007-07-07 PY - 2007 AN - OPUS4-23016 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Rede zum 60jährigen Bestehen des Normenausschusses Materialprüfung im DIN T2 - DIN (Deutsches Institut für Normung) CY - Berlin, Germany DA - 2007-08-30 PY - 2007 AN - OPUS4-23017 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - The input of R&D in standards on safety and security - The DIN-BAM connection as an example T2 - ISO General Assembly 2007 CY - Geneva, Switzerland DA - 2007-09-20 PY - 2007 AN - OPUS4-23018 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Was ist gute wissenschaftliche Politikberatung? T2 - Qualitätssicherung wissenschaftlicher Politikberatung, BBAW (Berlin-Brandenburgische Akademie der Wissenschaften) CY - Berlin, Germany DA - 2008-01-10 PY - 2008 AN - OPUS4-23019 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Grußwort für die AG Ressortforschung zur Gründungsveranstaltung des Julius-Kühn-Institutes T2 - JKI (Julius-Kühn-Institut) CY - Quedlinburg, Germany DA - 2008-02-26 PY - 2008 AN - OPUS4-23020 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Festvortrag zum 75. Geburtstag der Deutschen Gesellschaft für zerstörungsfreie Prüfung T2 - DGZfP (Deutsche Gesellschaft für zerstörungsfreie Prüfung) CY - Berlin, Germany DA - 2008-07-01 PY - 2008 AN - OPUS4-23021 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Laudatio zum Transferpreis Wissenswerte 2008 an Prof. Dr. Raul Rojas (FU Berlin) T2 - Technologiestiftung Berlin CY - Berlin, Germany DA - 2008-10-16 PY - 2008 AN - OPUS4-23022 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Perspectives of Federal Research Institutes T2 - Paul-Ehrlich-Institut CY - Langen (Hesse), Germany DA - 2008-12-11 PY - 2008 AN - OPUS4-23023 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Fluorescence depolarization in poly(p-phenylene vinylene) and its oligomers T2 - 99th ACS Meeting CY - San Francisco, CA, USA DA - 1992-04-05 PY - 1992 AN - OPUS4-23107 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Fluoreszenzmessungen zur Photooxidation von Polymeren und ein photoselektiver Effekt T2 - Bereich Photochemie im Fachbereich Chemie der Humboldt Universität CY - Berlin, Germany DA - 1992-06-18 PY - 1992 AN - OPUS4-23110 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Laudatio aus Anlass der Verleihung der Röntgen-Plakette and Dr. Uwe Ewert T2 - Röntgen-Gymnasium CY - Remscheid, Germany DA - 2009-05-09 PY - 2009 AN - OPUS4-23111 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Friedrich, Jörg Florian A1 - Wettmarshausen, Sascha A1 - Hennecke, Manfred T1 - Neue Molekülarchitekturen an Polyolefinoberflächen T2 - 17. Neues Dresdner Vakuumtechnisches Kolloquium - Beschichtung, Modifizierung und Charakterisierung von Polymeroberflächen CY - Dresden, Deutschland DA - 2009-10-21 KW - Plasma KW - Bromierung KW - Spacer KW - Haftvermittler KW - Metallbedampfung KW - Schälfestigkeit PY - 2009 SN - 978-3-9812550-1-0 SP - 38 EP - 40 AN - OPUS4-20250 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Buchberger, E. M. A1 - Kungl, A. A1 - Hennecke, Manfred A1 - Kauffmann, H. F. T1 - Energy transfer in a polymer donor/acceptor system - Analysis of distributed transfer rates from transient fluorescence data - The exponential serries method PY - 1992 SN - 0032-3934 VL - 33 SP - 857 EP - 858 PB - American Chemical Society CY - Newark, NJ AN - OPUS4-23223 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Friedrich, Jörg Florian A1 - Wettmarshausen, Sascha A1 - Hennecke, Manfred T1 - Haloform plasma modification of polyolefin surfaces N2 - Polyolefin surfaces (polyethylene and polypropylene) were exposed to haloform (CHX3) plasmas for introduction of monosort halogen groups. Bromoform and chloroform plasmas produced selectively C-Br (100 Br/100 C) and C-Cl (200 Cl/100 C) groups in high yields. The bromoform plasma showed 1-3 and the chloroform plasma 2-7 post-plasma introduced O-functionalities per 100 C. The polyolefin C-Br groups were grafted wet-chemically or by exposure to the vapour of amines, diols and glycols. Thus, spacer molecules could be covalently bonded to maximal 15 spacer molecules per 100 C for the smallest grafted molecules and 1.2 molecules/100 C for larger molecules as octaaminophenylene-POSS. After metal evaporation the end groups of these polymer-bonded spacer molecules formed also covalent bonds to the metal. Thus, flexible, hydrophobic and barrier elements were introduced into the polymer-metal interfaces for high-impact, high-durable and water-resistant metal-polymer composites as measured by means of peel strengths. KW - Bromination KW - Chlorination KW - Selective plasma processes KW - Spacer grafting PY - 2009 DO - https://doi.org/10.1016/j.surfcoat.2009.05.050 SN - 0257-8972 VL - 203 IS - 23 SP - 3647 EP - 3655 PB - Elsevier Science CY - Lausanne AN - OPUS4-23204 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Damerau, Thomas A1 - Sabelus, Silke A1 - Wachtendorf, Volker A1 - Hennecke, Manfred A1 - Greiner, A. T1 - Photochemische und thermische Stabilität eines Phenylen-Vinylen-Polymeren KW - Photostability KW - Fluorescence KW - Chemiluminescence PY - 1996 SN - 0016-3538 VL - 40 IS - 7 SP - 710 EP - 712 PB - GIT-Verlag CY - Darmstadt AN - OPUS4-23205 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Bäßler, H. A1 - Bradley, D.D.C. A1 - Hennecke, Manfred T1 - Exciton versus band description of the absorption spectrum in poly(p-phenylene vinylene) PY - 1991 DO - https://doi.org/10.1016/0379-6779(91)91597-4 SN - 0379-6779 VL - 41 IS - 3 SP - 1249 PB - Elsevier Sequoia CY - Lausanne AN - OPUS4-23246 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Hennecke, Manfred A1 - Sabelus, Silke T1 - Intramolecular excimers in vinylarylpolymers - Influence of molecular weight and tacticity T2 - ACS Fall National Meeting CY - Washington, D.C., USA DA - 1994-08-21 PY - 1994 SN - 0-8412-2955-4 SN - 0743-0515 N1 - Serientitel: Polymeric materials science and engineering – Series title: Polymeric materials science and engineering VL - 71 SP - 421 EP - 422 PB - ACS Publ. CY - Washington, DC AN - OPUS4-23228 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Hennecke, Manfred A1 - Damerau, Thomas ED - Urban, M. W. ED - Provder, T. T1 - Photophysical behavior of phenylene-vinylene-polymers as studied by polarized fluorescence spectroscopy T2 - ACS Fall National Meeting CY - Washington, D.C., USA DA - 1994-08-21 PY - 1995 SN - 0-8412-3262-8 SN - 0097-6156 N1 - Serientitel: ACS Symposium Series – Series title: ACS Symposium Series SP - 446 EP - 457 PB - American Chemical Society CY - Washington, DC AN - OPUS4-23232 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Hennecke, Manfred A1 - Damerau, Thomas T1 - Photophysical behavior of phenylene-vinylene-polymers as studied by polarized fluorescence spectroscopy T2 - ACS Fall National Meeting CY - Washington, D.C., USA DA - 1994-08-21 PY - 1994 SN - 0-8412-2955-4 SN - 0743-0515 N1 - Serientitel: Polymeric materials science and engineering – Series title: Polymeric materials science and engineering VL - 71 SP - 75 EP - 76 PB - ACS Publ. CY - Washington, DC AN - OPUS4-23236 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Plewinsky, Bodo A1 - Hennecke, Manfred A1 - Oppermann, W. ED - Czichos, Horst ED - Hennecke, Manfred T1 - Chemie PY - 2008 SN - 978-3-540-71851-2 DO - https://doi.org/10.1007/978-3-540-71852-9_3 SP - C1 EP - C114 PB - Springer CY - Berlin AN - OPUS4-23242 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hennecke, Manfred A1 - Kauffmann, H. F. T1 - On the fluorescence depolarization in bis-(N-carbazolyl) compounds N2 - If the intramolecular distance between the two isoenergetic chromophores of a bichromophoric compound is much smaller than the Förster radius of excitation energy transfer (EET), the probability to fluoresce is equal for both chromophores, because the EET takes place at a shorter time compared with the nanosecond timescale of the fluorescence lifetime. Then, the fluorescence depolarization of diluted solid solutions of such bichromophoric molecules can be measured with stationary excitation and used to evaluate the orientation between the two chromophores; in the most simple case the angle between their main axes is determined. Model calculations for bichromophoric alkane compounds with various conformational freedom reveal the amount of depolarization and thus the limits of the method. The results are compared to experimental data of 1,3-di(N-carbazolyl)-propane and 1,2-trans-di(N-carbazolyl)cyclobutane. PY - 1991 DO - https://doi.org/10.1016/0301-0104(91)89031-5 SN - 0301-0104 SN - 1873-4421 VL - 158 SP - 391 EP - 399 PB - Elsevier CY - Amsterdam AN - OPUS4-23158 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hennecke, Manfred A1 - Kurz, K. A1 - Fuhrmann, J. T1 - Molecular orientation of hot-drawn poly(butylene terephthalate) films as determined from the intrinsic polarized fluorescence N2 - As far as indicated by the spectra and the fluorescence time decay law, the properties of the fluorescence of poly(butylene terephthalate) (PBT) are almost identical to those of PET. The groundstate- stable sandwich dimers in the noncrystalline regions of uniaxially-drawn PBT films were used as chainintrinsic fluorescent labels for studying the orientation distribution function. The dimers are formed only in the amorphous regions; concerning the fluorescence signal, "amorphous" includes all the material outaide perfect crystallites. During deformation, the orientation coefficient F of the dimers follows approximately a superposition curve of crystallite-like orientation, easily separable in the initial range of stretching ratio λ < 2.5, and of true-amorphous orientation of the affine network type that becomes noticeable at λ > 3. The total fluorescence intensity of PBT, if excited at the proper wavelength, is proportional to the concentration of the dimers; it remains constant in the initial range of stretching, i.e. λ < 1.5. At higher λ, correlated to the increase of amorphous orientation, a strong increase of the dimer concentration, up to a factor of 6, is observed. PY - 1992 DO - https://doi.org/10.1021/ma00049a016 SN - 0024-9297 SN - 1520-5835 VL - 25 IS - 23 SP - 6190 EP - 6194 PB - American Chemical Society CY - Washington, DC AN - OPUS4-23161 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hennecke, Manfred A1 - Wadle, A. T1 - A photoselection study on the fluorescence of pyrenebutyric acid in solution N2 - Measurements with linearly polarized exciting and fluorescent light show that the excimerlike fluorescence of pyrenebutyric acid in alkaline solution is polarized. The degree of polarization r depends on temperature and, very pronounced, on the wavelength of excitation. This occurs in the spectral region where the excitation spectrum of the excimer differs from the corresponding monomer spectrum. The value of r, after correction of rotational depolarization, is 0.36 and indicates that single transition moments of absorption and emission coincide nearly in their direction. These results, together with the fluorescence time decay laws, strongly support the conclusion that, at least in an hydrophilic surrounding, not excimers but ground-state stable dimers of pyrene are formed. PY - 1992 DO - https://doi.org/10.1063/1.463190 SN - 0021-9606 SN - 1089-7690 VL - 97 IS - 2 SP - 871 EP - 874 PB - American Institute of Physics CY - Melville, NY AN - OPUS4-23163 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hennecke, Manfred T1 - On the transfer of excitation energy in poly(P-phenylenevinylene) as studied by fluorescence depolarization N2 - Measurements of polarized excitation and fluorescence spectra were carried out with thin films of PPV and with films of oligomer model compounds in a polystyrene matrix. The degree of fluorrescece polarization r and its spectral dependence are discussed with respect to the transfer of excitation energy and the mutual alignment of the flurophores. In contrast to the behaviour of conventional aromatic polymers, the value of r is non-zero in isotropic PPV and depends on preparation (up to r = 0.25 at λexc = 460 nm and λflu = 555 nm). r can be nearly as high as in the dilute solid solution of the oligomers. This is easily understood if the PPV segments are highly aligned in the distance range of energy transfer. PY - 1991 DO - https://doi.org/10.1016/0379-6779(91)91606-B SN - 0379-6779 VL - 41 IS - 3 SP - 1281 EP - 1284 PB - Elsevier Sequoia CY - Lausanne AN - OPUS4-23184 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kruse, A. A1 - Hennecke, Manfred A1 - Baalmann, A. A1 - Schlett, V. A1 - Stuke, H. T1 - Bindungsstruktur in plasmapolymerisierten Schichten aus Vinyltrimethylsilan N2 - Plasma polymer films of vinyltrimethylsilane (VTMS) were deposited by radiofrequency (RF. 13.56 MHz) or Microwave (MW, 2.45 GHz) discharges in two reactors of the same volume and geometry. — The polymer films were characterized by electron spectroscopy for chemical analysis (ESCA) and infrared spectroscopy (FTIR). It turned out, that the RF — and the MW — polymers had almost the same Si/C-composition ratio of 1/5 in the entire range of RF-and MW-power (60-150 W). Although the Si/C film-composition remains almost constant, the binding states of Si-and C-atoms in the respective ESCA-spectra are changing. While the CSi part of the C1s-peak increases with the RF-or MW-power, the C-H/C-C part of the peak decreases, indicating a loss of hydrogen in the polymer films. — Obviously the fragmentation of the VTMS-monomer is quite different for the two types of plasma discharges. While films of the RF-plasma clearly show strong contributions of the methyl and vinyl groups, these groups are completely missing for the MW-plasma polymers. — From these results structure models of the plasma polymers have been developed. KW - PECVD KW - Polymers KW - Spectroscopy PY - 1991 DO - https://doi.org/10.1002/bbpc.19910951111 SN - 0005-9021 VL - 95 IS - 11 SP - 1376 EP - 1380 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-23185 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kruse, A. A1 - Schlett, V. A1 - Baalmann, A. A1 - Hennecke, Manfred T1 - Structural investigations of electrical conducting plasma polymerized films from 2-iodothiophene N2 - Thin plasma polymerized films were produced in a microwave (2.45 GHz) plasma discharge using 2-iodothiophene as the initial monomer. The structure of these electrically conducting films (10-6-10-1 S/cm), the chemical state of the doping element iodine and the elemental homogeneity at the surface and in the films have been investigated by XPS, FTIR and AES. An interesting relationship was found that indicates some similarity to conventional polythiophene, prepared by electrodeposition. Besides covalently bound iodine, considerable amounts of I 3- and I 5- were detected and also a small number of O-I bonds were identified. PY - 1993 DO - https://doi.org/10.1007/BF00321432 SN - 0937-0633 VL - 346 IS - 1-3 SP - 284 EP - 289 PB - Springer CY - Berlin AN - OPUS4-23186 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Damerau, Thomas A1 - Hennecke, Manfred T1 - Excitation energy transfer in poly(p-phenylphenylenevinylene) determined by polarized fluorescence spectroscopy N2 - Polarized fluorescence spectroscopy is used to investigate the photophysical behavior of poly(p-phenylphenylenevinylene) (PPPV) in polystyrene matrix in comparison with oligomeric model compounds. For this purpose PPPV is modeled by a chain consisting of a distribution of independent oligomeric segments. Excitation energy transfer (EET) between the segments depends on the wavelength of excitation, not only for transfer along an isolated polymer chain, but also for intermolecular transfer at high concentration of PPPV. The spatial range of EET, as indicated by fluorescence depolarization, is reduced for excitation at the long wavelength edge of the absorption spectrum ("red-edge-effect"). KW - poly(p-phenylphenylenevinylene) KW - depolarization PY - 1995 DO - https://doi.org/10.1002/polb.1995.090331606 SN - 0887-6266 SN - 1099-0488 VL - 33 IS - 16 SP - 2219 EP - 2227 PB - Wiley CY - Hoboken, NJ AN - OPUS4-23187 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kruse, A. A1 - Baalmann, A. A1 - Hennecke, Manfred T1 - Elektrisch leitfähige Plasmapolymere N2 - Bei elektrisch isolierenden Polymeren kann durch Beimischung leitfähiger Partikel eine Leitfähigkeit erreicht werden. Polymere mit einem strukturell geordneten, ungesättigten Polymerkörper besitzen bereits eine intrinsische Leitfähigkeit. Dünne Polymerschichten, wie sie mit Plasmaverfahren erzeugt werden, unterscheiden sich ganz wesentlich in ihrer Struktur von den klassischen Polymeren. So besitzen Plasmapolymerschichten aus leitfähigen Polymeren nur sehr geringe Leitfähigkeiten. Diese kann durch eine Dotierung mit Jod bei erhöhter Temperatur verbessert werden. Da eine Dotierung während des Plasmaprozesses mit elementarem Jod schwierig ist, wurde am Fraunhofer-Institut für Angewandte Materialforschung ein neues Plasmaverfahren entwickelt und in einer Laboranlage erprobt. Die Anlage arbeitet mit einem Argon-Mikrowellenplasma, dem jodhaltige aromatische Monomere (2-lodthiophen) zugesetzt wird. Die elektrische Leitfähigkeit der erzeugten Plasmapolymerschicht ist gut; ihr Aufbau und molekulare Struktur wurden mit ESCA und IR-Spektroskopie untersucht. KW - Polymer PY - 1993 SN - 0941-7168 VL - 4 IS - 1 SP - 40 EP - 43 PB - Vogel CY - München AN - OPUS4-23192 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kruse, A. A1 - Baalmann, A. A1 - Budden, W. A1 - Schlett, V. A1 - Hennecke, Manfred T1 - Thin conductive coatings formed by plasma polymerization of 2-iodothiophene N2 - Intrinsically conductive plasma polymers were formed in a 2.45 GHz microwave low pressure plasma. The electrical conductivity and structure of the polymeric films were compared with those of electrochemically polymerized polythiophene. A new method of doping was tested using the iodine-containing monomer 2-iodothiopene. Films with high electrical conductivity (10-1 down to 10-6 S cm-1) could be produced, and their chemical structure was studied by X-ray photoelectron spectroscopy and Fourier transform IR spectroscopy. The IR spectra give a strong indication that the chemical structure of these films is comparable with that of electrochemically deposited polythiophene. Optical emission spectroscopy was used to give in-situ information about the fragmentation mechanism in the plasma. PY - 1993 DO - https://doi.org/10.1016/0257-8972(93)90113-3 SN - 0257-8972 VL - 59 IS - 1-3 SP - 359 EP - 364 PB - Elsevier Science CY - Lausanne AN - OPUS4-23178 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Damerau, Thomas A1 - Hennecke, Manfred A1 - Greiner, A. T1 - Photoreactivity of poly(p-phenylphenylenevinylene) N2 - In films of poly(para-phenylphenylenevinylene) a photoreaction has been observed. The significant feature is a decrease of the fluorescence emission intensity during irradiation. It is assumed that a cycloaddition between C=C- double-bonds leads to crosslinks in the material. Under similar conditions of excitation a photoreaction has not been observed in poly(p-phenylenevinylene) prepared via the precursor-route. PY - 1994 DO - https://doi.org/10.1007/BF00306389 SN - 0170-0839 SN - 1436-2449 VL - 32 IS - 2 SP - 201 EP - 205 PB - Springer CY - Berlin AN - OPUS4-23179 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Damerau, Thomas A1 - Hennecke, Manfred T1 - Determination of orientational order parameters of uniaxial films with a commercial 90°-angle fluorescence spectrometer N2 - A method is developed to determine orientational order parameters and of films by steady state fluorescence polarization in a spectrometer with 90° angle between excitation and emission beam. This is the geometry usually found in commercial fluorescence spectrometers. The method includes the determination of the fundamental molecular anisotropy rM of the fluorescent chromophore (doped or intrinsic) in stretched and unstretched films and the determination of instrumental correction coefficients from an isotropic film. As an example, the method is applied to orientation analysis of polyethylene and polystyrene films doped with fluorescent molecules of repetitive styrene units. It is concluded that in uniaxially stretched polyethylene-films orientation of these molecules is dominated by their molecular shape; in polystyrene films orientation is influenced by additional interactions. PY - 1995 DO - https://doi.org/10.1063/1.470450 SN - 0021-9606 SN - 1089-7690 VL - 103 IS - 14 SP - 6232 EP - 6240 PB - American Institute of Physics CY - Melville, NY AN - OPUS4-23181 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Damerau, Thomas A1 - Hennecke, Manfred A1 - Hörhold, H. H. T1 - Photophysical behaviour of poly(p-phenylene-arylvinylene)s determined by polarized fluorescence spectroscopy N2 - Stationary polarized fluorescence spectra of poly(1,4-phenylene-1-phenylvinylene), poly(1,4-phenylene-1,2-diphenylvinylene) and poly[1,4-phenylene-1,2-bis(4-phenoxyphenyl)vinylene] in tetrahydrofuran solution and in polystyrene films were recorded at room temperature. In these matrices, different behaviour is found concerning the Stokes shift, the degree of polarization and the quantum yield; it is interpreted as a viscosity induced effect. The commonly accepted model of a conjugated polymer chain to consist of independent segments of various length should not be applied to the poly(phenylene-arylvinylene)s studied in this work. PY - 1995 DO - https://doi.org/10.1002/macp.1995.021960426 SN - 1022-1352 SN - 1521-3935 VL - 196 IS - 4 SP - 1277 EP - 1286 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-23182 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hennecke, Manfred A1 - Damerau, Thomas A1 - Müllen, K. T1 - Fluorescence depolarization in poly(p-phenylphenylenevinylene) and related oligomers N2 - The photophysical behavior of poly(p-phenylphenylenevinylene) (PPPV) and several oligomeric model compounds in isotropic and anisotropic samples is investigated by means of polarized fluorescence spectroscopy. As long as excitation energy transfer and mutual alignment are considered, the behavior of PPPV can be modeled by a chain consisting of a distribution of independent oligomeric segments. The results of fluorescence polarization, e.g., the nonzero value of r in isotropic PPPV, cast doubt on the application of the semiconductor band model but favor an interpretation of spectroscopic properties in terms of molecular transitions. The orientation coefficients of the oligomers and of PPPV in stretched polyethylene are determined. The change of fluorescence spectra of oriented PPPV in stretched polyethylene demonstrates directly that conformational changes of the macromolecule influence the pathway of energy transfer. PY - 1993 DO - https://doi.org/10.1021/ma00065a026 SN - 0024-9297 SN - 1520-5835 VL - 26 IS - 13 SP - 3411 EP - 3418 PB - American Chemical Society CY - Washington, DC AN - OPUS4-23165 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kruse, A. A1 - Vissing, K. D. A1 - Baalmann, A. A1 - Hennecke, Manfred T1 - Niederdruckplasmen - Eine Technologie und ihre Anwendungen PY - 1993 SN - 0023-5563 VL - 83 IS - 7 SP - 522 EP - 526 PB - Hanser CY - München AN - OPUS4-23171 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Orientierungsbestimmung in Polymeren mit spektroskopischen Methoden T2 - Institut für Physikalische Chemie der TU Clausthal CY - Clausthal-Zellerfeld, Germany DA - 1995-02-06 PY - 1995 AN - OPUS4-23134 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Untersuchungen zur Stabilität von Polymeren für die Anwendung in Leuchtdioden T2 - Statusseminar des BMBF-Verbundprojektes "Grundlagen und Wirkungsweisen polymerer Leuchtdioden" CY - Regensburg, Germany DA - 1995-10-10 PY - 1995 AN - OPUS4-23139 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Orientierungsbestimmung in Polymeren mit spektroskopischen Methoden T2 - Zentrum für Makromolekulare Chemie in der KAI CY - Berlin, Germany DA - 1993-09-10 PY - 1993 AN - OPUS4-23124 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Plasmapolymerisierte dünne Schichten - Herstellung, Charakterisierung, Anwendung T2 - Institut für physikalische Chemie der TU Clausthal CY - Clausthal-Zellerfeld, Germany DA - 1993-12-03 PY - 1993 AN - OPUS4-23127 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Fluoreszenzmethoden in der Polymeranalytik T2 - Fachbereich Chemie der Humboldt-Universität zu Berlin CY - Berlin, Germany DA - 1994-05-17 PY - 1994 AN - OPUS4-23130 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -