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Synthesis and Characterization of a Novel Linear Trinuclear Ruthenium(II) Complex:  Variation of Photosensitization Ability with Chain Length in a Homologous Series

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journal contribution
posted on 09.07.2002, 00:00 authored by Simona Vaduvescu, Pierre G. Potvin
A new, one-step preparation of 1,4-di(2,2‘:6‘,2‘ ‘-terpyridin-4‘-yl)benzene was employed in the synthesis of a linear trinuclear Ru(II) complex, which was compared to mononuclear and dinuclear analogues using UV−vis spectrometry, cyclic voltammetry, and ability to sensitize the photogeneration of methyl viologen radical cation. The chain length-dependent increase in sensitization ability was consistent with an increasing molar absorbance and with an end-on approach of the photoreactants mitigating the increasing charge.