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Synthesis, Electrochemical and Electrogenerated Chemiluminescence Studies of Ruthenium(II) Bis(2,2′-bipyridyl){2-(4-methylpyridin-2-yl)benzo[d]-X-azole} Complexes

✍ Scribed by Roberto Gobetto; Giuseppe Caputo; Claudio Garino; Simona Ghiani; Carlo Nervi; Luca Salassa; Edward Rosenberg; J. B. Alexander Ross; Guido Viscardi; Gianmario Martra; Ivana Miletto; Marco Milanesio

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
245 KB
Volume
2006
Category
Article
ISSN
1434-1948

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✦ Synopsis

Abstract

A series of photoactive complexes of Ru^II^bis(bipyridyl){2‐(4‐methylpyridin‐2‐yl)benzo[d]‐X‐azole}~2~ (X = N–CH~3~, 1; S, 2; or O, 3) have been synthesized and fully characterized by proton and ^13^C NMR spectroscopy and UV/Vis spectroscopy. The X‐ray structure of 1 is also reported. The electrochemical behavior and the photophysical properties of 1–3 have been investigated. Cyclic voltammetry (CV) reveals the presence of three consecutive one‐electron reduction processes and a single one‐electron oxidation process that are chemically and electrochemically reversible. In all cases, electrogenerated chemiluminescence (ECL) has been observed in the presence of the co‐reactant tri‐n‐propylamine (TPA). An analogue of 1 has been synthesized, Ru^II^bis(bipyridyl){2‐(4‐methylpyridin‐2‐yl)benzo[d]‐X‐azole}~2~ [X = N(CH~2~)~5~CO~2~H, 4], it has been coupled with bovine serum albumin (BSA), and its photophysical properties investigated. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)

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