Photophysical Properties of 4t-（p-aminophenyl）-2,2＇：6＇,2″-terpyridine  

4＇-（对-胺苯基）-2，2＇：6＇，2″-三联吡啶光物理性质

作　　者：宋朋[1] 孙士国[2] 周潘旺[1] 刘建勇[1] 徐勇前[2] 彭孝军[2] 

机构地区：[1]中国科学院大连化学物理研究所分子反应动力学国家重点实验室,大连116023 [2]大连理工大学精细化工国家重点实验室,大连116012

出　　处：《Chinese Journal of Chemical Physics》2010年第5期558-564,622,共8页化学物理学报（英文）

摘　　要：Spectral and photophysical investigations of 4＇-（p-aminophenyl）-2,2＇：6＇,2″-terpyridine （APT） have been performed in various solvents with different polarity and hydrogen-bonding ability. The emission spectra of APT are found to exhibit dual fluorescence in polar solvents, which attributes to the local excited and intramolecular charge transfer states, respectively. The two-state model is proven out for APT in polar solvent by the time-correlated single photon counting emission decay measurement. Interestingly, the linear relationships of different emission maxima and solvent polarity parameter are found for APT in protic and aprotic solvents, because of the hydrogen bond formation between APT and alcohols at the amino nitrogen N25. Furthermore, the effects of the complexation of the metal ion with tpy group of APT and the hydrogen bond formation between APT with methanol at the terpyridine nitrogen N4-NS-N14 are also presented. The appearance of new long-wave absorption and fluorescence bands indicates that a new ground state of the complexes is formed.

关 键 词：Dual fluorescence Local excited state Intramolecular charge transfer TERPYRIDINE COMPLEXATION Fluorescence decay 

分 类 号：O[理学]