Gherab, Kichou N. and Gatri, Rafik and Hank, Zakia and Dick, Bernhard and Kutta, Roger-Jan and Winter, Rainer and Luc, Jerome and Sahraoui, Bouchta and Fillaut, Jean-Luc (2010) Design and photoinduced surface relief grating formation of photoresponsive azobenzene based molecular materials with ruthenium acetylides. JOURNAL OF MATERIALS CHEMISTRY, 20 (14). pp. 2858-2864. ISSN 0959-9428, 1364-5501
Full text not available from this repository. (Request a copy)Abstract
Novel photoresponsive materials based on ruthenium(II) sigma-acetylides coupled to an azobenzene moiety in the main pi-conjugated chain have been synthesized. The introduction of a metal acetylide fragment in the same conjugated chain as the azobenzene induces the trans-cis-trans isomerization of the azo unit, while the rate of the thermal cis -> trans back isomerization increases with increasing overall electron richness of these compounds. These azobenzene-containing ruthenium(II) acetylides show satisfactory processability and give rise to spin-coated uniform thin films. Formation of surface-relief gratings on their amorphous thin films and in a PMMA polymer matrix using a picosecond pulsed laser at 532 nm results in instantaneous inscription: saturation of the first order diffraction efficiency and of the modulation amplitude of gratings were obtained in less than 1 s, while the orientation of these azodyes remains unchanged for up to 6 months.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NONLINEAR-OPTICAL PROPERTIES; SINGLE GREEN LIGHT; ORGANOMETALLIC COMPLEXES; METAL-COMPLEXES; QUADRATIC HYPERPOLARIZABILITIES; PICOSECOND REGIME; ALKYNYL COMPLEXES; CRYSTAL-STRUCTURE; FILMS; STORAGE; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Arbeitskreis Prof. Dr. Rainer Winter Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Molecular Spectroscopy and Photochemistry) > Prof. Dr. Bernhard Dick |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 17 Aug 2020 14:25 |
| Last Modified: | 17 Aug 2020 14:25 |
| URI: | https://pred.uni-regensburg.de/id/eprint/25513 |
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