<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>24483</id>
    <completedYear/>
    <publishedYear>2011</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1736</pageFirst>
    <pageLast>1742</pageLast>
    <pageNumber/>
    <edition/>
    <issue>9</issue>
    <volume>42</volume>
    <type>article</type>
    <publisherName>Wiley</publisherName>
    <publisherPlace>Chichester</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">SERS enhancement of gold nanospheres of defined size</title>
    <abstract language="eng">Monodisperse, citrate-stabilized gold nanoparticles of sizes ranging from 15 to 40 nm were synthesized and characterized by small angle X-ray scattering and UV-vis experiments. Identical surface properties of nanoparticles of different sizes to avoid variation in the chemical surface-enhanced Raman scattering (SERS) enhancement, as well as selection of experimental conditions so that no aggregation took place, enabled the investigation of enhancement of individual nanospheres. Enhancement factors (EFs) for SERS were determined using the dye crystal violet (CV). EFs for individual gold nanospheres ranged from 102 to 103, in agreement with theoretical predictions. An increase of the EFs of individual spheres with size can be correlated to changes in the extinction spectra of nanoparticle solutions. This confirms that the increase in enhancement with increasing size results from an increase in electromagnetic enhancement. Beyond this dependence of EFs of isolated gold spheres on their size, EFs were shown to vary with analyte concentration as a result of analyte-induced aggregation. This has implications for the application of nanoparticle solutions as SERS substrates in quantitative analytical tasks.</abstract>
    <parentTitle language="eng">Journal of raman spectroscopy</parentTitle>
    <identifier type="old">27155</identifier>
    <identifier type="doi">10.1002/jrs.2939</identifier>
    <identifier type="issn">0377-0486</identifier>
    <identifier type="issn">1097-4555</identifier>
    <enrichment key="date_peer_review">20.10.2011</enrichment>
    <author>Viginia Joseph</author>
    <author>Andrea Matschulat</author>
    <author>Jörg Polte</author>
    <author>Simone Rolf</author>
    <author>Franziska Emmerling</author>
    <author>Janina Kneipp</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Surface-enhanced Raman scattering</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Electromagnetic enhancement factor</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Crystal violet</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Citrate reduction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Gold nanoparticles</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>20940</id>
    <completedYear/>
    <publishedYear>2010</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1076</pageFirst>
    <pageLast>1082</pageLast>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>4</volume>
    <type>article</type>
    <publisherName>ACS Publ.</publisherName>
    <publisherPlace>Washington, DC, USA</publisherPlace>
    <creatingCorporation>American Chemical Society</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Nucleation and growth of gold nanoparticles studies via in situ small angle X-ray scattering at millisecond time resolution</title>
    <abstract language="eng">Gold nanoparticles (AuNP) were prepared by the homogeneous mixing of continuous flows of an aqueous tetrachloroauric acid solution and a sodium borohydride solution applying a microstructured static mixer. The online characterization and screening of this fast process (~2 s) was enabled by coupling a micromixer operating in continuous-flow mode with a conventional in-house small angle X-ray scattering (SAXS) setup. This online characterization technique enables the time-resolved investigation of the growth process of the nanoparticles from an average radius of ca. 0.8 nm to about 2 nm. To the best of our knowledge, this is the first demonstration of a continuous-flow SAXS setup for time-resolved studies of nanoparticle formation mechanisms that does not require the use of synchrotron facilities. In combination with X-ray absorption near edge structure microscopy, scanning electron microscopy, and UV-vis spectroscopy the obtained data allow the deduction of a two-step mechanism of gold nanoparticle formation. The first step is a rapid conversion of the ionic gold precursor into metallic gold nuclei, followed by particle growth via coalescence of smaller entities. Consequently it could be shown that the studied synthesis serves as a model system for growth driven only by coalescence processes.</abstract>
    <parentTitle language="eng">ACS nano</parentTitle>
    <identifier type="old">23275</identifier>
    <identifier type="doi">10.1021/nn901499c</identifier>
    <identifier type="issn">1936-0851</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">01.03.2010</enrichment>
    <author>Jörg Polte</author>
    <author>Robert Erler</author>
    <author>Andreas Thünemann</author>
    <author>S. Sokolov</author>
    <author>T. T. Ahner</author>
    <author>K. Rademann</author>
    <author>Franziska Emmerling</author>
    <author>R. Kraehnert</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Nanoparticle formation mechanism</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>SAXS</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Microstructured static mixer</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Continuous flow</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>26427</id>
    <completedYear/>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>5791</pageFirst>
    <pageLast>5802</pageLast>
    <pageNumber/>
    <edition/>
    <issue>7</issue>
    <volume>6</volume>
    <type>article</type>
    <publisherName>ACS Publ.</publisherName>
    <publisherPlace>Washington, DC, USA</publisherPlace>
    <creatingCorporation>American Chemical Society</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Formation mechanism of colloidal silver nanoparticles: analogies and differences to the growth of gold nanoparticles</title>
    <abstract language="eng">The formation mechanisms of silver nanoparticles using aqueous silver perchlorate solutions as precursors and sodium borohydride as reducing agent were investigated based on time-resolved in situ experiments. This contribution addresses two important issues in colloidal science: (i) differences and analogies between growth processes of different metals such as gold and silver and (ii) the influence of a steric stabilizing agent on the growth process. The results reveal that a growth due to coalescence is a fundamental growth principle if the monomer-supplying chemical reaction is faster than the actual particle formation.</abstract>
    <parentTitle language="eng">ACS nano</parentTitle>
    <identifier type="old">29194</identifier>
    <identifier type="doi">10.1021/nn301724z</identifier>
    <identifier type="issn">1936-0851</identifier>
    <enrichment key="date_peer_review">10.09.2012</enrichment>
    <author>Jörg Polte</author>
    <author>X. Tuaev</author>
    <author>M. Wuithschick</author>
    <author>A. Fischer</author>
    <author>Andreas Thünemann</author>
    <author>K. Rademann</author>
    <author>R. Kraehnert</author>
    <author>Franziska Emmerling</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Silver nanoparticle growth</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Formation mechanisms</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Nucleation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>SAXS</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>23048</id>
    <completedYear/>
    <publishedYear>2010</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1296</pageFirst>
    <pageLast>1301</pageLast>
    <pageNumber/>
    <edition/>
    <issue>4</issue>
    <volume>132</volume>
    <type>article</type>
    <publisherName>American Chemical Society</publisherName>
    <publisherPlace>Washington, DC</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Mechanism of gold nanoparticle formation in the classical citrate synthesis method derived from coupled in situ XANES and SAXS evaluation</title>
    <parentTitle language="eng">Journal of the American chemical society</parentTitle>
    <identifier type="old">25615</identifier>
    <identifier type="doi">10.1021/ja906506j</identifier>
    <identifier type="issn">0002-7863</identifier>
    <identifier type="issn">1520-5126</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">27.01.2011</enrichment>
    <author>Jörg Polte</author>
    <author>T. T. Ahner</author>
    <author>Friedmar Delißen</author>
    <author>S. Sokolov</author>
    <author>Franziska Emmerling</author>
    <author>Andreas Thünemann</author>
    <author>R. Kraehnert</author>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>17813</id>
    <completedYear/>
    <publishedYear>2008</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>5905</pageFirst>
    <pageLast>5911</pageLast>
    <pageNumber/>
    <edition/>
    <issue>15</issue>
    <volume>80</volume>
    <type>article</type>
    <publisherName>American Chemical Society</publisherName>
    <publisherPlace>Washington, DC</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Superparamagnetic Maghemite Nanorods: Analysis by Coupling Field-Flow Fractionation and Small-Angle X-ray Scattering</title>
    <abstract language="eng">We report on the online coupling of asymmetrical flow field-flow fractionation (A4F) with small-angle X-ray scattering (SAXS) for the detection of nanoparticles. The A4F was used to fractionate superparamagnetic maghemite nanoparticles, which were prepared continuously with a micromixer. The outlet of the A4F was directly coupled to a flow capillary of a SAXSess instrument (Kratky type of camera). SAXS curves were recorded in a 1 s time interval. This was possible by using intense synchrotron radiation. The radii of gyration of the nanoparticles, as determined from Guinier plots, increased from 2 to 6 nm with increasing fractionation time of the A4F. A more detailed analysis of the scattering curves revealed that the particles were cylindrical in shape (nanorods), which we attributed to the micromixing preparation technique. The radii of the nanorods increased only slightly from 1.2 to 1.7 nm with increasing fractionation time, while the lengths increased strongly from 7.0 to 30.0 nm. The volume distribution of the nanorods was determined and described by Schultz-Zimm and log-normal distributions. Nanorod volumes increased from 45 to 263 nm³, corresponding to molar masses of 140 × 10³ to 820 × 10³ g mol-1. We propose A4F-SAXS coupling as a new method for analysis of nanoparticles of complex composition in solution. It allows precise online determination of the particles shape and size distributions. This method can be applied to mixtures of nanoparticles of arbitrary shapes and sizes (1-100 nm). Moreover, the total time needed for fractionation and online SAXS data recording is usually only 20 min.</abstract>
    <parentTitle language="eng">Analytical chemistry</parentTitle>
    <identifier type="old">19904</identifier>
    <identifier type="doi">10.1021/ac8004814</identifier>
    <identifier type="issn">0003-2700</identifier>
    <identifier type="issn">1520-6882</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">04.09.2008</enrichment>
    <author>Andreas Thünemann</author>
    <author>Jenny Kegel</author>
    <author>Jörg Polte</author>
    <author>Franziska Emmerling</author>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>27539</id>
    <completedYear/>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>18824</pageFirst>
    <pageLast>18833</pageLast>
    <pageNumber/>
    <edition/>
    <issue>45</issue>
    <volume>134</volume>
    <type>article</type>
    <publisherName>American Chemical Society</publisherName>
    <publisherPlace>Washington, DC</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Formation mechanism of silver nanoparticles stabilized in glassy matrices</title>
    <abstract language="eng">In any given matrix control over the final particle size distribution requires a constitutive understanding of the mechanisms and kinetics of the particle evolution. In this contribution we report on the formation mechanism of silver nanoparticles embedded in a soda-lime silicate glass matrix. For the silver ion-exchanged glass it is shown that at temperatures below 410 °C only molecular clusters (diameter &lt;1 nm) are forming which are most likely silver dimers. These clusters grow to nanoparticles (diameter &gt;1 nm) by annealing above this threshold temperature of 410 °C. It is evidenced that the growth and thus the final silver nanoparticle size are determined by matrix-assisted reduction mechanisms. As a consequence, particle growth proceeds after the initial formation of stable clusters by addition of silver monomers which diffuse from the glass matrix. This is in contrast to the widely accepted concept of particle growth in metal–glass systems, in which it is assumed that the nanoparticle formation is predominantly governed by Ostwald ripening processes.</abstract>
    <parentTitle language="eng">Journal of the American chemical society</parentTitle>
    <identifier type="old">30365</identifier>
    <identifier type="doi">10.1021/ja309034n</identifier>
    <identifier type="issn">0002-7863</identifier>
    <identifier type="issn">1520-5126</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">10.01.2013</enrichment>
    <author>A. Simo</author>
    <author>Jörg Polte</author>
    <author>N. Pfänder</author>
    <author>U. Vainio</author>
    <author>Franziska Emmerling</author>
    <author>K. Rademann</author>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>22346</id>
    <completedYear/>
    <publishedYear>2010</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>2463</pageFirst>
    <pageLast>2469</pageLast>
    <pageNumber/>
    <edition/>
    <issue>11</issue>
    <volume>2</volume>
    <type>article</type>
    <publisherName>RSC Publ.</publisherName>
    <publisherPlace>Cambridge</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Mechanistic insights into seeded growth processes of gold nanoparticles</title>
    <abstract language="eng">A facile approach for the synthesis of monodisperse gold nanoparticles with radii in the range of 7 to 20 nm is presented. Starting from monodisperse seeds with radii of 7 nm, produced in the first step, the addition of a defined amount of additional precursor material permits distinct size regulation and the realization of predicted nanoparticle sizes. These information were derived from ex- and in situ investigations by comprehensive small angle X-ray scattering (SAXS), X-ray absorption near edge structure (XANES) and UV-Vis data to obtain information on the physicochemical mechanisms. The obtained mechanisms can be transferred to other seeded growth processes. Compared to similar approaches, the presented synthesis route circumvents the use of different reducing or stabilizing agents. The size of resulting nanoparticles can be varied over a large size range presented for the first time without a measurable change in the shape, polydispersity or surface chemistry. Thus, the resulting nanoparticles are ideal candidates for size dependence investigations.</abstract>
    <parentTitle language="eng">Nanoscale</parentTitle>
    <identifier type="old">24866</identifier>
    <identifier type="doi">10.1039/c0nr00541j</identifier>
    <identifier type="issn">2040-3364</identifier>
    <identifier type="issn">2040-3372</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">11.11.2010</enrichment>
    <author>Jörg Polte</author>
    <author>Martin Herder</author>
    <author>Robert Erler</author>
    <author>Simone Rolf</author>
    <author>A. Fischer</author>
    <author>Christian Würth</author>
    <author>Andreas Thünemann</author>
    <author>R. Kraehnert</author>
    <author>Franziska Emmerling</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Gold nanoparticles</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>SAXS</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>XANES</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Growth mechanism</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>21223</id>
    <completedYear/>
    <publishedYear>2010</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>5889</pageFirst>
    <pageLast>5894</pageLast>
    <pageNumber/>
    <edition/>
    <issue>8</issue>
    <volume>26</volume>
    <type>article</type>
    <publisherName>American Chemical Society</publisherName>
    <publisherPlace>Washington, DC</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Real-time monitoring of copolymer stabilized growing gold nanoparticles</title>
    <abstract language="eng">A great challenge in the production of nanoparticles with defined sizes and properties is to control their growth in situ. We developed a dedicated combined small-angle X-ray scattering (SAXS) and X-ray absorption spectroscopy (XAS) setup to monitor nanoparticle formation in solution. The capabilities of simultaneously deriving particle sizes and oxidation states of atoms/ions are illustrated for the formation of spherical gold nanoparticles by the reduction of hydrogen tetrachloroaureate (HAuCl4). Particles with initial radii of 4.60 ± 0.10 nm and final radii of 5.67 ± 0.10 nm were produced in a levitated droplet with a volume of 4 µL. An ethylene oxide/propylene oxide triblock copolymer PEO-PPO-PEO (Pluronic F-127) functions as reducing agent and colloidal stabilizer. XANES shows in situ how the gold was reduced in the droplet from Au(III) to Au(0), and simultaneously SAXS recorded the size distribution of the formed nanoparticles. It is shown that the final particle number is reached quickly. Thereafter, only the particles sizes increase. Comparison of XANES and SAXS shows that the quantity of Au(0) is higher than the quantity of gold located in the nanoparticles while the particles are growing. Finally, all the Au(0) is found in the nanoparticles. We tentatively attribute this finding to the pseudo crown ether effect of the polymer surfactant that kinetically stabilizes gold atoms when formed from gold ions within their protecting cavity. A simple burst mechanism for the gold nanoparticle formation is the consequence. The possibility of an inhomogeneous particles structure with an enhanced density near the particle surface is discussed.</abstract>
    <parentTitle language="eng">Langmuir</parentTitle>
    <identifier type="old">23620</identifier>
    <identifier type="doi">10.1021/la903829q</identifier>
    <identifier type="issn">0743-7463</identifier>
    <identifier type="issn">1520-5827</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">06.05.2010</enrichment>
    <author>Jörg Polte</author>
    <author>Franziska Emmerling</author>
    <author>Martin Radtke</author>
    <author>Uwe Reinholz</author>
    <author>Heinrich Riesemeier</author>
    <author>Andreas Thünemann</author>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>22684</id>
    <completedYear/>
    <publishedYear>2010</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>012051-1 - 012051-10</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>247</volume>
    <type>article</type>
    <publisherName>IOP Publ.</publisherName>
    <publisherPlace>Bristol, UK</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">New insights of the nucleation and growth process of gold nanoparticles via in situ coupling of SAXS and XANES</title>
    <abstract language="eng">Although metallic nanoparticles play an important role in the area of nanotechnology, a coherent mechanistic explanation for the evolution of the particles during their chemical synthesis has not yet been provided in many cases. To gain a profound understanding of the growth mechanism of colloidal nanoparticles, new approaches using Small Angle X-Ray Scattering (SAXS) combined with X-ray absorption near-edge structure (XANES) are presented. This combination allows for insights into two prominent syntheses routes of gold nanoparticles (GNP): The 'slow' reaction using sodium citrate (30-90 min) as a reducing agent and the 'fast' reaction employing NaBH4 (within few seconds). In the first case data derived with the coupled XANES and SAXS suggests a four-step particle formation mechanism. For the second system a time resolution in the order of 100-200 ms was achieved by coupling a common laboratory SAXS instrument with a microstructured mixer, which allows data acquisition in a continuous-flow mode. The results indicate a coalescence driven growth process. Based on the capabilities to deduce the size, number and polydispersity of the particles, the results of both methods enable the development of mechanistic schemes explaining the different phases of particle formation and growth, thus providing a basis for improved control over the synthesis processes.</abstract>
    <parentTitle language="eng">Journal of physics / Conference series</parentTitle>
    <identifier type="old">25232</identifier>
    <identifier type="doi">10.1088/1742-6596/247/1/012051</identifier>
    <identifier type="issn">1742-6588</identifier>
    <identifier type="issn">1742-6596</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="zsBemerkung">Die Aufnahme ist grundsätzlich falsch, da es sich trotz des Titels ("Journal of physics / Conference series") nicht um eine Zeitschrift handelt, sondern um eine Tagungsband-Reihe. Da sehr viele Artikel an diesem Eintrag hängen, wäre die Korrektur aber extrem aufwändig.  Die Tagungsband-Reihe findet sich in der Master Journal List bzw. in dem Journal Citation Report selbstverständlich nicht wieder, da es ja keine Zeitschrift ist. Allerdings wird die Tagungsband-Reihe sehr wohl von Thomson-Reuters für Ihre Datenbank ausgewertet, als "Book Series". Daher muss sichergestellt werden, dass die dort erscheinenden Artikel auch für die "1000-Euro-Liste" berücksichtigt werden.  Die einfachste Lösung ist es, den Eintrag als Zeitschrift zu belassen, und das Häkchen bei "In MJL/CPCI von ISI enthalten" zu setzen. Das ist zwar formal nicht ganz korrekt, erzeugt aber das richtige Ergebnis.  Jan Harloff-Puhr 11.7.2014</enrichment>
    <enrichment key="date_peer_review">09.12.2010</enrichment>
    <author>Jörg Polte</author>
    <author>R. Kraehnert</author>
    <author>Martin Radtke</author>
    <author>Uwe Reinholz</author>
    <author>Heinrich Riesemeier</author>
    <author>Andreas Thünemann</author>
    <author>Franziska Emmerling</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>SAXS</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>XANES</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Nanoparticle formation</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>23049</id>
    <completedYear/>
    <publishedYear>2010</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>9209</pageFirst>
    <pageLast>9211</pageLast>
    <pageNumber/>
    <edition/>
    <issue>48</issue>
    <volume>46</volume>
    <type>article</type>
    <publisherName>Royal Society of Chemistry</publisherName>
    <publisherPlace>Cambridge</publisherPlace>
    <creatingCorporation>Chemical Society</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">SAXS in combination with a free liquid jet for improved time-resolved in situ studies of the nucleation and growth of nanoparticles</title>
    <parentTitle language="eng">Chemical communications</parentTitle>
    <identifier type="old">25616</identifier>
    <identifier type="doi">10.1039/c0cc03238g</identifier>
    <identifier type="issn">0022-4936</identifier>
    <identifier type="issn">0009-241x</identifier>
    <identifier type="issn">1359-7345</identifier>
    <identifier type="issn">1364-548x</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">27.01.2011</enrichment>
    <author>Jörg Polte</author>
    <author>Robert Erler</author>
    <author>Andreas Thünemann</author>
    <author>Franziska Emmerling</author>
    <author>R. Kraehnert</author>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>26277</id>
    <completedYear/>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>298</pageFirst>
    <pageLast>309</pageLast>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>8</volume>
    <type>article</type>
    <publisherName>Wiley-VCH Verl.</publisherName>
    <publisherPlace>Weinheim</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">New triblock copolymer templates, PEO-PB-PEO, for the synthesis of titania films with controlles mesopore size, wall thickness, and bimodal porosity</title>
    <abstract language="eng">The synthesis and properties of a series of new structure-directing triblock copolymers with PEO-PB-PEO structure (PEO = poly(ethylene oxide) and PB = polybutadiene) and their application as superior pore-templates for the preparation of mesoporous titania coatings are reported. Starting from either TiCl4 or from preformed TiO2 nanocrystalline building blocks, mesoporous crystalline titanium oxide films with a significant degree of mesoscopic ordered pores are derived, and the pore size can be controlled by the molecular mass of the template polymer. Moreover, the triblock copolymers form stable micelles already at very low concentration, i.e., prior to solvent evaporation during the evaporation-induced self-assembly process (EISA). Consequently, the thickness of pore walls can be controlled independently of pore size by changing the polymer-to-precursor ratio. Thus, unprecedented control of wall thickness in the structure of mesoporous oxide coatings is achieved. In addition, the micelle formation of the new template polymers is sufficiently distinct from that of typical commercial PPO-PEO-PPO polymers (Pluronics; PPO = poly(propylene oxide)), so that a combination of both polymers facilitates bimodal porosity via dual micelle templating.</abstract>
    <parentTitle language="eng">Small</parentTitle>
    <identifier type="old">29029</identifier>
    <identifier type="doi">10.1002/smll.201101520</identifier>
    <identifier type="issn">1613-6810</identifier>
    <identifier type="issn">1613-6829</identifier>
    <enrichment key="date_peer_review">09.08.2012</enrichment>
    <author>Erik Ortel</author>
    <author>A. Fischer</author>
    <author>L. Chuenchom</author>
    <author>Jörg Polte</author>
    <author>Franziska Emmerling</author>
    <author>B.M. Smarsly</author>
    <author>R. Kraehnert</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mesoporous materials</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Titanium oxide films</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Anatase nanoparticles</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>PEO-PB-PEO</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Dual templating</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
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