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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >Photoinduced intermolecular electron transfer process of fullerene (C-60) and amine-substituted fluorenes studied by laser flash photolysis
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Photoinduced intermolecular electron transfer process of fullerene (C-60) and amine-substituted fluorenes studied by laser flash photolysis

机译：激光闪光光解研究富勒烯（C-60）和胺取代芴的光致分子间电子转移过程

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摘要

Photoinduced intermolecular electron transfer process of fullerene (C-60) with 9,9-bis(4-triphenylamino)fluorene (BTAF) and 9,9-dimethoxyethyl-2-diphenylaminofluorene (DAF) in toluene and benzonitrile has been investigated by nanosecond laser photolysis technique in the visibleear-IR regions. By the selective excitation of C-60 Using 532 laser light, it has been proved that the electron transfer takes place from the ground states BTAF and DAF to the triplet excited state of C-60 (C-3(60)*) by observing the radical anion of C-60 and radical cation of BTAF and DAF It was observed that the electron transfer of BTAF/C-3(60)* is more efficient than DAF/C-3(60)* reflecting the effect of amine-substitutents of the fluorene moiety on the efficiency of the electron transfer process. On addition of a viologen dication (OV2+), the electron of the anion radical of C-60 mediates to OV2+ yielding the OV center dot+. These results proved that the photosensitized electron-transfer/electron-mediating processes have been confirmed by the transient absorption spectral method. (c) 2006 Elsevier B.V. All rights reserved.
机译：纳秒激光研究了9,9-双（4-三苯基氨基）芴（BTAF）和9,9-二甲氧基乙基-2-二苯基氨基芴（DAF）在富勒烯（C-60）中甲苯和苄腈的光诱导分子间电子转移过程可见/近红外区域的光解技术。通过使用532激光对C-60进行选择性激发，已证明通过观察观察到电子从基态BTAF和DAF转移到C-60的三重激发态（C-3（60）*）观察到，BTAF / C-3（60）*的电子转移比DAF / C-3（60）*的电子转移更有效，这反映了胺-芴部分的取代基对电子转移过程效率的影响。添加紫精指示剂（OV2 +）后，C-60阴离子基团的电子介导为OV2 +，从而产生OV中心点+。这些结果证明了通过瞬态吸收光谱法已经证实了光敏电子转移/电子介导过程。 （c）2006 Elsevier B.V.保留所有权利。

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