Aggregation-induced phosphorescence of iridium(III) complexes with 2,2′-bipyridine-acylhydrazone and their highly selective recognition to Cu2+

被引：43
|
作者：
Zhao, Na [1 ]
Wu, Yu-Hui [1 ]
Luo, Jian [1 ]
Shi, Lin-Xi [1 ]
Chen, Zhong-Ning [1 ,2 ]
机构：
[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China
来源：
ANALYST | 2013年 / 138卷 / 03期
关键词：
EFFECTIVE CORE POTENTIALS; DENSITY-FUNCTIONAL THEORY; EMISSION AIPE; FLUORESCENT CHEMOSENSOR; MOLECULAR CALCULATIONS; EXCITATION-ENERGIES; METALS;
D O I：
10.1039/c2an36501d
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Two cationic cyclometallated iridium(III) complexes with 2,2'-bipyridine-acylhydrazone were synthesized and characterized by spectroscopic and photophysical measurements. They exhibit remarkable aggregation-induced phosphorescent emission (AIPE) phenomenon which is caused by the restriction of rapid isomerization of the C = N bond in the acylhydrazone moiety and are supported by TD-DFT studies. They also act as a significant 'off-on' luminescent switch for Cu2+ which works as both catalyzer and oxidant in the sensing process, resulting in hydrolysis and cyclization products which are highly emissive. The sensing properties of iridium(III) complexes are also investigated by ESI-MS spectrometry and H-1 NMR spectroscopy.
引用
收藏
页码：894 / 900
页数：7
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