Synthesis and photophysics of novel 8-hydroxyquinoline aluminum metal complex with fluorene units

被引:10
|
作者
Feng, Liheng
Wang, Xiaoju
Zhao, Sanhu
Chen, Zhaobin [1 ]
机构
[1] Shanxi Univ, Sch Chem & Chem Engn, Taiyuan 030006, Peoples R China
[2] Inst Med & Life Sci & Technol Shanxi, Taiyuan 030006, Peoples R China
[3] Xinzhou Teachers Univ, Dept Chem, Xinzhou 034000, Peoples R China
基金
中国国家自然科学基金;
关键词
8-hydroxyquinoline aluminum; luminescent material; fluorene; photophysics;
D O I
10.1016/j.saa.2006.12.041
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
A novel luminescent metal complex, (MQPF)(3)Al-2, with 8-hydroxyquinoline aluminum and 9,9-diphenylfluorene was synthesized. The optical properties were investigated by UV-vis absorption and fluorescence emission spectra. The results showed that the luminescence quantum yield of (MQPF)(3)Al-2 was 0.612 in THF and it emitted red light with the band gap of 3.18 eV estimated from the onset absorption. The emission spectra exhibited obvious solvent effect. With the increase of polarity of solvents the fluorescence spectra changed obviously and appeared blue shift about 60 nm at room temperature. In addition, the light-emitting can be quenched by both electron donor (N,N-dimethylaniline) and electron acceptor (Fullerene), where the processes followed the Stern-Volmer equation. However, when adding 1,4-dicyanobenzene (DCB) which was a stronger electron acceptor to the solution of (MQPF)(3)Al-2, the fluorescent intensity was increased. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:646 / 650
页数:5
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