Photo- and protonation-induced changes in structures and physical properties of azo-conjugated metal complex systems |
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| Authors: | Hiroshi Nishihara Masayuki Nihei Akira Hirooka Masato Kurihara |
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| Affiliation: | Department of Chemistry, School of Science, The University of Tokyo, Tokyo 113-0033, Japan |
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| Abstract: | Novel photo- and proton-coupled behavior of azo-conjugated metal complexes is described. The trans-to-cis isomerization of azoferrocene proceeds not only by the photoexcitation of the π-π* transition band but also by photoexcitation of the MLCT (d-π* transition) band, by a protonation-deprotonation cycle (proton-coupled isomerization), and by an oxidation-reduction cycle (redox isomerization). A platinum tolylazophenylenedithiolato complex shows reversible trans-to-cis photoisomerization, protochromism, and novel proton-coupled cis-to-trans isomerization. |
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