Photoinduced double proton transfer in water complexes of 1H-pyrrolo[3,2-h]quinoline and dipyrido[2,3-a:3′,2′-i]carbazole
Photoinduced double proton transfer in water complexes of 1H-pyrrolo[3,2-h]quinoline and dipyrido[2,3-a:3′,2′-i]carbazole
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DOI：
10.1016/s0009-2614(02)01607-x
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发表时间：
2002-12-10
影响因子：
2.8
通讯作者：
Waluk, J
中科院分区：
文献类型：
--
作者：
Kijak, M;Zielinska, A;Waluk, J
在1H-吡咯并[3，2-h]喹啉和联吡啶并[2，3-a：3‘，2’-i]咔唑的水和水溶液中观察到双荧光。低能带归属为激发态双质子转移反应的产物，与水形成1：1的环状络合物。这样的络合物只占基态人口的一小部分。大多数水的络合物不容易发生光互变，但在非氢键生色团中，通过一种效率不高的过程失活。(C)2002 Elsevier Science B.V.保留所有权利。
Dual fluorescence is observed in water and water-containing solutions of 1H-pyrrolo[3,2-h]quinoline and dipyrido[2,3-a:3',2'-i]carbazole. The low energy band is assigned to a product of excited state double proton transfer reaction, occurring in cyclic 1:1 complexes with water. Such complexes constitute only a small fraction of the ground state population. The majority of water complexes are not prone to phototautomerization, but are deactivated via a process that is not efficient in a non-hydrogen-bonded chromophore. (C) 2002 Elsevier Science B.V. All rights reserved.