COMPARISON OF FLEXIBLY AND RIGIDLY BRIDGED DONOR-ACCEPTOR SYSTEMS - SOLVENT INDUCED SWITCHING BETWEEN FOLDED AND EXTENDED EMISSIVE CHARGE-TRANSFER STATES

被引：0
|
作者：
SCHERER, T
WILLEMSE, RJ
VERHOEVEN, JW
机构：
来源：
RECUEIL DES TRAVAUX CHIMIQUES DES PAYS-BAS-JOURNAL OF THE ROYAL NETHERLANDS CHEMICAL SOCIETY | 1991年 / 110卷 / 03期
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O6 [化学];
学科分类号：
0703 ;
摘要：
Aniline and naphthalene chromophores were linked by either a flexible trimethylene chain (in 1) or a semirigidly extended piperidine ring (in 2). While 1 undergoes photoinduced intramolecular electron transfer in all solvents 2 does so only in more polar solvents, indicating that solvent stabilization is required to make this process feasible at the donor-acceptor distance imposed in 2. In both 1 and 2 charge recombination is accompanied by exciplex-type emission which, in polar solvents, appears to stem from a conformationally extended conformation devoid of extensive direct overlap between the chromophores.
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页码：95 / 96
页数：2
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