Electronic factor for photoinduced electron transfer in porphyrin-bridge-quinone systems

被引：13

作者：

do Monte, SA ^{[1
]}

Braga, M ^{[1
]}

机构：

[1] Univ Fed Pernambuco, Dept Quim Fundamental, BR-50740540 Recife, PE, Brazil

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 290卷 / 1-3期

关键词：

D O I：

10.1016/S0009-2614(98)00467-9

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：

Quantum-chemical calculations at a semiempirical level (CNDO/S) are used for porphyrin-bridge-quinone systems and at an ab initio and semiempirical level for CH2-bridge-CH22- systems. In both cases the bridge is constituted by a number of aromatic, saturated or mixed units. From these calculations the electronic factor (Delta) is obtained, for photoinduced reaction (PET) in the first case and for thermal reaction in the second case. The relative efficiency of the bridges is discussed. For phenylene and staffane units, a non-exponential dependence of Delta with distance is observed for PET, while for the other two bridges the exponential behavior prevails. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：136 / 142

页数：7

共 26 条

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