An efficient D-A dyad for solvent polarity sensor

被引：15
|
作者：
Xing, YJ [1 ]
Lin, HY [1 ]
Wang, F [1 ]
Lu, P [1 ]
机构：
[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2006年 / 114卷 / 01期
基金：
美国国家科学基金会;
关键词：
donor-acceptor molecule; tercarbazole; intramolecular charge transfer; exciplex; solvent polarity sensor;
D O I：
10.1016/j.snb.2005.04.028
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An efficient donor (D)-acceptor (A) molecule (6) was synthesized by bonding tercarbazole to phthalimide through a flexible bridge. Structures of 6 and related intermediates were fully characterized by H-1 NMR, C-13 NMR, and MS as well. Moreover, absorption and emission spectra of 6 and tercarbazole (4) were studied comparatively. As a result, dual emission of 6 was observed in non-polar solvents, while the lifetime consisted of biexponential decays. A longer lifetime emission (18.9 ns) was found due to the exciplex formation through intramolecular charge transfer (ICT) in cyclohexane. The relative intensity of long-wavelength emission was sensitive to solvent polarity. Therefore, 6 has the potential usage as solvent polarity sensor. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：28 / 31
页数：4
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