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采用稳态和时间分辨的瞬态光谱技术对比研究了一种Corrole化合物5,10,15-三(五氟苯基)Corrole(F15TPC)和一种卟啉化合物5,10,15,20-四(五氟苯基)卟啉(F20TPP)的光物理特性。结果表明:F15TPC的B带吸收峰较宽而F20TPP的强而窄,F15TPC的Q带有两个吸收峰而F20TPP有四个。F15TPC的荧光量子产率为0.15,荧光寿命为4.8ns,F20TPP的荧光量子产率为0.05,荧光寿命为11.1ns;与F20TPP相比F15TPC具有发光效率高、荧光寿命短的特点。F15TPC具有较大的发光速率常数和无辐射跃迁速率常数,这可能是由于F15TPC少了一个氟代苯基,致使其发色团本身的电子结构发生变化所致。另外空间结构的不对称性和非共面性也对其光物理性质有影响。
A steady-state and time-resolved transient spectroscopy technique was used to compare a Corrole compound 5,10,15-tris (pentafluorophenyl) Corrole (F15TPC) with a porphyrin compound 5,10,15,20-tetra (Pentafluorophenyl) porphyrin (F20TPP). The results showed that the bands of B band of F15TPC are wider and F20TPP is stronger and narrower. The Q of F15TPC has two absorption peaks and the number of F20TPP is four. The fluorescence quantum yield of F15TPC was 0.15, the fluorescence lifetime was 4.8ns, the fluorescence quantum yield of F20TPP was 0.05 and the fluorescence lifetime was 11.1ns. Compared with F20TPP, F15TPC had the characteristics of high luminescence efficiency and short fluorescence lifetime. F15TPC has a large luminescence rate constant and a non-radiative transition rate constant, probably due to the lack of a fluorophenyl group in the F15TPC, resulting in a change in the electronic structure of the chromophore itself. In addition, the asymmetry and non-coplanarity of the spatial structure also affect their photophysical properties.