Synthesis and photophysical properties of C60-diphenylaminofluorene dyad and multiads
Synthesis and photophysical properties of C60-diphenylaminofluorene dyad and multiads
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DOI：
10.1081/ma-200035292
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发表时间：
2004-11-01
期刊：
影响因子：
--
通讯作者：
Chiang, LY
中科院分区：
文献类型：
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作者：
Padmawar, PA;Canteenwala, T;Chiang, LY
合成了一种C-60-二苯氨基芴C-60（>DPAF）（n）衍生物的单加合物和三种新的多加合物类似物，并通过多种光谱方法进行了表征。这些样品的光吸收表明，随着DPAF加数的增加，以415 nm为中心的芴带的相对强度系统地增加。发现在邻二氯苯和氯仿中的所有C-60（>DPAF）（n）衍生物4（n = 1）、5（n = 2）、6（n = 3）和7（n = 4）中的DPAF发色团的荧光被有效地猝灭，因为DPAF部分与富勒烯笼的直接共价键连接促进有效的分子内电子或能量转移过程。
One mono-adduct and three novel multi-adduct analogs of C-60-diphenylaminofluorene C-60(>DPAF)(n) derivatives were synthesized and characterized by various spectroscopic methods. Optical absorption of these samples indicated a systematic increase in relative intensity of the fluorene band centered at 415 nm as the number of DPAF addend increases. Fluorescence of DPAF chromophore in all C-60(>DPAF)(n) derivatives 4 (n = 1), 5 (n = 2), 6 (n = 3), and 7 (n = 4) in o-dichlorobenzene and chloroform was found to be efficiently quenched as the direct covalent bond attachment of DPAF moieties to the fullerene cage facilitates efficient intramolecular electron or energy transfer processes.