Triarylamine-Conjugated Bis (dipyrrinato) zinc (II) Complexes: Impact of Triarylamine on Photochemical Property and Multi-Redox Reaction

In this communication, we report the synthesis of triarylamine-conjugated bis (dipyrrinato) zinc (II) complexes 1 and 2, and disclose their photochemical and electrochemical properties. The structures of 1 and 2 were determined by means of single-crystal X-ray structure analysis. The effect of the t...

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Published inDenki kagaku oyobi kōgyō butsuri kagaku Vol. 81; no. 5; pp. 337 - 339
Main Authors Tsuchiya, M, Sakamoto, R, Kusaka, S, Kakinuma, J, Nishihara, H
Format Journal Article
LanguageEnglish
Published 01.05.2013
Subjects
Ligands
Oxidation
Photochemical
Quenching (cooling)
Spectra
Voltammetry
Zinc
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Summary:In this communication, we report the synthesis of triarylamine-conjugated bis (dipyrrinato) zinc (II) complexes 1 and 2, and disclose their photochemical and electrochemical properties. The structures of 1 and 2 were determined by means of single-crystal X-ray structure analysis. The effect of the triarylamine moieties on the UV-vis spectra of 1 and 2 was not large, although it significantly quenched the fluorescence of 1 and 2. Cyclic voltammetry and differential pulse voltammetry revealed that 1 and 2 underwent oxidation up to four electrons. Since they bear two triarylamine entities and two dipyrrinato ligands, the oxidation is assignable to the one-electron oxidation processes of each of the four moieties. The redox reversibility was much higher in 2 than that in 1. The introduction of ethyl groups on the 2 and 6 positions of dipyrrin moieties contributed to the enhancement of the electrochemical reversibility.
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ISSN:1344-3542
DOI:10.5796/electrochemistry.81.337