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

页码：28 / 31

页数：4

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