Effect of micelles on dual fluorescence of 2-(4′-N,N-dimethylaminophenyl)pyrido[3,4-d]imidazole

被引:25
作者
Krishnamoorthy, G [1 ]
Dogra, SK [1 ]
机构
[1] Indian Inst Technol, Dept Chem, Kanpur 208016, Uttar Pradesh, India
关键词
D O I
10.1016/S0009-2614(00)00511-X
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
2-(4'-N.N-dimethylaminophenyl)pyrido[3,4-d]imidazole (DMAPPI) exhibits dual emission in sodium dodecylsulphate (SDS), cetyltrimethylammonium bromide (CTAB) and triton X-100 (TX-100) micelles. Normal and twisted intramolecular charge transfer (TICT) emissions are blue-shifted by 15-18 and 5-10 nm, respectively. In both cases, the DMAPPI molecule is located at the same site of the micelles. The greater stabilization in the TICT state has been attributed to the hydrogen bonding at the electron acceptor group. The enhancement in TICT emission is nearly the same in all the micelles, whereas the enhancement in normal emission is different in different micelles. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:234 / 242
页数:9
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