Feng Liheng, Wang Xiaoju, Chen Zhaobin
School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2008 Nov 15;71(2):312-6. doi: 10.1016/j.saa.2007.12.036. Epub 2008 Jan 10.
A novel luminescent metal complex, (OXHQ)3Al, with 8-hydroxyquinoline aluminum and electron-transporting 1,3,4-oxadiazole unit was designed and synthesized. The photophysical processes were investigated by UV-vis absorption and fluorescence emission spectra in diluent solution. The results showed that the luminescence quantum yield of (OXHQ)3Al was 0.67 in DMSO and it emitted blue light with the band gap of 3.13 eV estimated from the onset absorption. In addition, the light-emitting of (OXHQ)3Al can be quenched by electron acceptor (dimethylterephalate), where the processes followed the Stern-Volmer equation. However, with the addition of electron donor (N,N-dimethylaniline) fluorescent intensity of (OXHQ)3Al was increased and emission peak was lightly blue-shift. Furthermore, the molecular interactions of (OXHQ)3Al with fullerene (C60) or carbon nanotubes (CNTs) were also carefully investigated.
设计并合成了一种新型发光金属配合物(OXHQ)3Al，它由8-羟基喹啉铝和电子传输1,3,4-恶二唑单元组成。通过在稀释溶液中的紫外可见吸收光谱和荧光发射光谱研究了其光物理过程。结果表明，(OXHQ)3Al在二甲基亚砜中的发光量子产率为0.67，发出蓝光，根据起始吸收估算其带隙为3.13 eV。此外，(OXHQ)3Al的发光可被电子受体（对苯二甲酸二甲酯）猝灭，其过程符合斯特恩-沃尔默方程。然而，加入电子供体（N,N-二甲基苯胺）后，(OXHQ)3Al的荧光强度增加，发射峰轻微蓝移。此外，还仔细研究了(OXHQ)3Al与富勒烯（C60）或碳纳米管（CNT）的分子相互作用。
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