Radiationless decay from the ligand-to-metal charge-transfer state in the blue copper protein plastocyanin

被引：33

作者：

Edington, MD

Diffey, WM

Doria, WJ

Riter, RE

Beck, WF

机构：

[1] Department of Chemistry, Vanderbilt University, 5134 Stevenson Center, P.O. Box 1822-B, Nashville

[2] Department of Chemistry, Colorado State University, Fort Collins

来源：

CHEMICAL PHYSICS LETTERS | 1997年 / 275卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(97)00738-0

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：

The cysteine S(p pi) --> Cu(2+)d(x2-y2) ligand-to-metal charge-transfer (LMCT) state in plastocyanin exhibits a time-resolved pump-probe spectrum that has excited-state absorption and stimulated-emission components to the blue and red, respectively, of the absorbtion maximum. The LMCT state returns to the ground state by populating the d(xz+yz) --> d(x2-y2) ligand-field (LF) state. The lack of hole-burned features in the time-resolved spectra implies the presence of intramolecular vibrational redistribution and/or protein-matrix solvation dynamics on a time scale that is shorter than the 125 fs lifetime of the LMCT state. (C) 1997 Elsevier Science B.V.

引用

页码：119 / 126

页数：8

共 35 条

[1] OPTICALLY HETERODYNED POLARIZATION SPECTROSCOPY - MEASUREMENT OF THE ORIENTATIONAL CORRELATION-FUNCTION [J].