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URN to cite this document: urn:nbn:de:bvb:703-epub-4768-6
Title data
Wolfer, Pascal ; Audorff, Hubert ; Kreger, Klaus ; Kador, Lothar ; Schmidt, Hans-Werner ; Stingelin, Natalie ; Smith, Paul:
Photo-induced molecular alignment of trisazobenzene derivatives.
In: Journal of Materials Chemistry.
Vol. 21
(2011)
Issue 12
.
- pp. 4339-4345.
ISSN 0959-9428
DOI der Verlagsversion: https://doi.org/10.1039/c0jm03477k
![[thumbnail of c0jm03477k.pdf]](https://epub.uni-bayreuth.de/style/images/fileicons/application_pdf.png)
Project information
| Project title: |
Project's official title Project's id Komplexe Makromolekül- und Hybridsysteme in inneren und äußeren Feldern SFB481 |
|---|---|
| Project financing: |
Deutsche Forschungsgemeinschaft |
Abstract
Optically active small-molecular trisazobenzene derivatives are explored that allow facile photo-induced fabrication of holographic volume gratings which are unusually stable over time compared to structures based on other small-molecular organic compounds. The origin of this favorable characteristic of such architectures is investigated with three compounds that structurally differ only in the length of an alkyl spacer positioned between the molecular core and the active azobenzene chromophores. Species comprising spacers of sufficient length, and that exhibit a latent liquid-crystalline phase, feature efficient formation of stable, ordered domains in which the three side groups orient perpendicular to the polarization of the inscribing light beam. It is demonstrated that molecular order in these domains can be significantly improved by annealing at temperatures between the glass transition temperature and the clearing point of the specific compounds. This phenomenon allows combining the highly desirable processing characteristic of relatively short holographic writing times with small molecules in the fabrication of stable volume gratings, the latter feature so far having been reserved predominantly for polymeric species.
Further data
| Item Type: | Article in a journal |
|---|---|
| Additional notes (visible to public): | ISI:000288220600050 |
| DDC Subjects: | 500 Science > 530 Physics 500 Science > 540 Chemistry |
| Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry II Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Macromolecular Chemistry I - Univ.-Prof. Dr. Hans-Werner Schmidt Research Institutions > Central research institutes > Bayreuth Institute of Macromolecular Research - BIMF Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry I Research Institutions Research Institutions > Central research institutes Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-4768-6 |
| Date Deposited: | 03 Sep 2020 08:33 |
| Last Modified: | 03 Sep 2020 08:33 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/4768 |
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