Syntheses and Photophysical Properties of N‐Pyridylimidazol‐2‐ylidene Tetracyanoruthenates(II) and Photochromic Studies of Their Dithienylethene‐Containing Derivatives |
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| Authors: | Dr Gongping Duan Prof Dr Vivian Wing‐Wah Yam |
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| Institution: | Centre for Carbon‐Rich Molecular and Nanoscale Metal‐Based Materials Research, Department of Chemistry, HKU‐CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hong Kong (P.R. China), Fax: (+852)?2857‐1586 |
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| Abstract: | A series of tetracyanoruthenate(II) with chelating pyridyl N‐heterocyclic carbene ligands (NHC‐py) was synthesized and characterized. Their photophysical and electrochemical properties as well as the photochromic behavior of their dithienylethene‐containing complexes were studied. Photocyclization was found to take place upon irradiation into the metal‐to‐ligand charge transfer (MLCT) absorption bands of these complexes, and evidence is provided to support the triplet‐sensitizing reaction pathway. |
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| Keywords: | carbenes heterocycles photochromism ruthenium triplet sensitization |
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