具有空穴传输基团的新型8-羟基喹啉铝金属染料的合成与光物理性质
Synthesis and photophysics of novel 8-hydroxyquinoline aluminum metal dye with hole transfer groups.
作者信息
Wang Xiaoju, Feng Liheng, Chen Zhaobin
机构信息
Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006, PR China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2008 Dec 15;71(4):1433-7. doi: 10.1016/j.saa.2008.04.026. Epub 2008 May 8.
A novel luminescent dye metal complex, (CZHQ)3Al, with 8-hydroxyquinoline aluminum and hole-transporting carbazole units was designed and synthesized. The (CZHQ)3Al optical properties were carefully investigated by UV-vis absorption and fluorescence spectra in diluent solution. The results showed that the luminescent quantum yield of (CZHQ)3Al was 0.62 in DMSO and it emitted red-light with the band gap of 2.89 eV estimated from the onset absorption. In addition, the light-emission of (CZHQ)3Al can be quenched by electron acceptor (dimethylterephalate), where the process followed the Stern-Volmer equation. However, the fluorescent intensities of (CZHQ)3Al were slowly increased with the addition of electron donor (N,N-dimethylaniline). Furthermore, the molecular interactions of (CZHQ)3Al with fullerene (C60) and carbon nanotubes (CNTs) were also respectively investigated, which indicated the metal dye can be used as new fluorescent probe.
设计并合成了一种新型发光染料金属配合物（CZHQ）₃Al，它含有8-羟基喹啉铝和空穴传输咔唑单元。通过在稀释溶液中的紫外可见吸收光谱和荧光光谱对（CZHQ）₃Al的光学性质进行了仔细研究。结果表明，（CZHQ）₃Al在二甲基亚砜中的发光量子产率为0.62，并且从起始吸收估计其带隙为2.89 eV时发射红光。此外，（CZHQ）₃Al的发光可以被电子受体（对苯二甲酸二甲酯）淬灭，该过程遵循斯特恩-沃尔默方程。然而，随着电子供体（N，N-二甲基苯胺）的加入，（CZHQ）₃Al的荧光强度缓慢增加。此外，还分别研究了（CZHQ）₃Al与富勒烯（C₆₀）和碳纳米管（CNT）的分子相互作用，这表明该金属染料可作为新型荧光探针。
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