苯基桥联双咔咯镓配合物的合成与发光性质

Synthesis and Photoluminescent Property of a Phenyl Bridged Biscorrole Gallium Complex

合成了苯基桥联双咔咯(1)及其镓配合物(2),利用紫外-可见光谱(UV-Vis),核磁共振波谱(1H NMR,19F NMR)及质谱(MS)对它们进行了表征.采用稳态和时间分辨荧光光谱对化合物1和2的发光性质进行了研究.实验结果表明,双咔咯1及其镓配合物2的荧光量子产率分别为0.142和0.473,荧光寿命相应为5.2与3.2 ns,且配合物2的荧光光谱显著蓝移.瞬态吸收光谱显示,在无氧条件下双咔咯1和配合物2的三重激发态(T1)寿命分别为58与34μs,其T1态的量子产率则分别为0.47和0.63.

An m-phenyl bridged biscorrole 1 and its gallium complex 2 were synthesized and characterized by UV-Vis, 1H NMR, 19F NMR and MS. The photoluminescent properties of them were investigated using steady state and time-resolved fluorescence spectroscopy. Fluorescence quantum yield/life time of compounds 1 and 2 are 0. 142/5.2 ns and 0. 473/3.2 ns, respectively, and the fluorescence spectrum of compound 2 was blueshifted significantly. Transient absorption spectroscopic investigations showed the quantum yield/life time of first excited triplet（ T1 ） state of compounds 1 and 2 in toluene were 0. 47/58 μs and 0. 63/34 μs respectively.