Proton Controlled Intramolecular Communication in Dinuclear Ruthenium(II) Polypyridine Complexes

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• 作者：Cinzia Di Pietro ; Scolastica Serroni ; Sebastiano Campagna ; Maria Teresa Gandolfi ; Roberto Ballardini ; Stefano Fanni ; Wesley R. Browne ; and Johannes G. Vos
• 刊名：Inorganic Chemistry
• 出版年：2002
• 出版时间：June 3, 2002
• 年：2002
• 卷：41
• 期：11
• 页码：2871 - 2878
• 全文大小：100K
• 年卷期：v.41,no.11(June 3, 2002)
• ISSN：1520-510X

文摘

The synthesis and characterization of two dinuclear ruthenium polypyridyl complexes based on the bridging ligands5,5'-bis(pyridin-2' '-yl)-3,3'-bis(1H-1,2,4-triazole) and 5,5'-bis(pyrazin-2' '-yl)-3,3'-bis(1H-1,2,4-triazole) and of theirmononuclear precursors are reported. The dinuclear compounds have been prepared by a Ni(0) catalyzed couplingof a mononuclear ruthenium(II) polypyridyl complex containing a brominated triazole moiety. Electrochemical andphotophysical studies indicate that, in these dinuclear complexes, the protonation state of the bridge may be usedto tune the intercomponent interaction between the two metal centers and that these species act as proton driventhree-way molecular switches that can be read by electrochemical or luminescence techniques.