Photoisomerisation in Aminoazobenzene‐Substituted Ruthenium(II) Tris(bipyridine) Complexes: Influence of the Conjugation Pathway |
| |
Authors: | Dr Anissa Amar Dr Paul Savel Dr Huriye Akdas‐Kilig Dr Claudine Katan Prof Hacène Meghezzi Prof Abdou Boucekkine Dr Jean‐Pierre Malval Dr Jean‐Luc Fillaut |
| |
Institution: | 1. Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS ‐ Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex (France);2. Laboratoire de Thermodynamique et Modélisation Moléculaire, USTHB, BP 32 El Alia, 16111 Bab Ezzouar Alger (Algeria);3. Institut de Science des Matériaux de Mulhouse, UMR CNRS 7361, Université de Haute‐Alsace, 15, rue Jean Starcky, 68057 Mulhouse (France) |
| |
Abstract: | Transition‐metal complexes containing stimuli‐responsive systems are attractive for applications in optical devices, photonic memory, photosensing, as well as luminescence imaging. Amongst them, photochromic metal complexes offer the possibility of combining the specific properties of the metal centre and the optical response of the photochromic group. The synthesis, the electrochemical properties and the photophysical characterisation of a series of donor–acceptor azobenzene derivatives that possess bipyridine groups connected to a 4‐dialkylaminoazobenzene moiety through various linkers are presented. DFT and TD‐DFT calculations were performed to complement the experimental findings and contribute to their interpretation. The position and nature of the linker (ethynyl, triazolyl, none) were engineered and shown to induce different electronic coupling between donor and acceptor in ligands and complexes. This in turn led to strong modulations in terms of photoisomerisation of the ligands and complexes. |
| |
Keywords: | azo compounds density functional calculations isomerisation photochromism ruthenium |
|
|