On the mechanism of the photoinduced reduction of an adduct of ferricytochrome C with a poly(4-vinylpyridine) polymer containing -ReI (CO)3(3,4,7,8-tetramethyl-1,10-phenanthroline) pendants

被引：5

作者：

Bracco, Larisa L. B. ^{[1
]}

Garcia Einschlag, Fernando S. ^{[1
]}

Wolcan, Ezequiel ^{[1
]}

Ferraudi, Guillermo J. ^{[2
]}

机构：

[1] UNLP, CCT La Plata CONICET, Inst Invest Fisicoquim Teor & Aplicadas, La Plata, Buenos Aires, Argentina

[2] Univ Notre Dame, Dept Chem, Notre Dame, IN 46556 USA

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2009年 / 208卷 / 01期

关键词：

Cytochrome c; Rhenium; Polymers; Photoinduced; MLCT; TEA; MULTIVARIATE CURVE RESOLUTION; ALTERNATING LEAST-SQUARES; CYTOCHROME-C; ELECTRON-TRANSFER; TRICARBONYL COMPLEXES; PULSE-RADIOLYSIS; STATE; RE(I); 4-CYANOPYRIDINE; DEPROTONATION;

D O I：

10.1016/j.jphotochem.2009.08.003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Changes in the UV-vis absorption spectrum revealed the formation of adducts between the Re-I polymer and ferricytochrome C, Fe-III-Cyt c. Different morphologies for the Re-I polymer and the adducts formed between the Re-I polymer and Fe-III-Cyt c were observed by TEM. The reduction of the Re-I chromophores in the polymer, achieved by the reductive quenching of the MLCT excited state of the Re-I polymer by triethylamine (TEA) and/or by the reaction between e(solv)(-) and {[(vpy)(2)vpyRe(I)(CO)(3)(tmphen)(+)]}(n similar to 200) in pulse radiolysis experiments, produces -Re-I(CO)(3)(tmphen)(center dot) and -Re-I(CO)(3)(tmphenH)(center dot+) as the main species. The reductive quenching of the MLCT of the Re-I polymer by TEA was followed by a rapid electron transfer from the -Re-I(CO)(3)(tmphen)(center dot) to the Fe-III center in the heme to produce ferrocytochrome C, Fe-II-Cyt c. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：50 / 58

页数：9

共 42 条

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