光学学报, 2008, 28 (12): 2375, 网络出版: 2008-12-17  

5, 10, 15-三(五氟苯基)Corrole及其相似卟啉化合物的光物理特性

Photophysical Properties of 5,10,15-Tris(Pentafluorophenyl) Corrole and Its Porphyrin Analogue
作者单位
1 中山大学光电材料与技术国家重点实验室, 广东 广州 510275
2 华南理工大学化学系, 广东 广州 510641
3 中山大学化学与化工学院, 广东 广州 510275
摘要
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4.8 ns, F20TPP的荧光量子产率为0.05, 荧光寿命为11.1 ns; 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。
Abstract
The photophysical properties of 5,10,15-Tris(pentafluorophenyl) corrole (F15TPC) and its porphyrin analogue 5,10,15,20-Tetra(pentafluorophenyl)porphyrin (F20TPP) were investigated through the steady-state and the time-resolved transient spectroscopy. The results show a wide B band absorption peak for F15TPC, and a sharp peak for F20TPP. The Q band of F15TPC has two absorption peaks, while the F20TPP has four. The luminescence quantum yield and fluorescence life time for F15TPC and F20TPP are 0.15, 4.8 ns and 0.05, 11.1 ns, respectively. The F15TPC is characterized by high luminescence quantum yield and short fluorescence life time compared with F20TPP. The calculation results show that the F15TPC has large emission rate constant and nonemission rate constant. These may be ascribed to the changed electronic structure of the F15TPC chromophore for the lack of a fluorophenyl and its unsymmetrical and non-planar spatial structure.
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张燕伟, 史蕾, 沈涵, 张国良, 游丽莉, 文锦辉, 刘海洋, 王惠, 计亮年. 5, 10, 15-三(五氟苯基)Corrole及其相似卟啉化合物的光物理特性[J]. 光学学报, 2008, 28(12): 2375. Zhang Yanwei, Shi Lei, Shen Han, Zhang Guoliang, You Lili, Wen Jinhui, Liu Haiyang, Wang Hui, Ji Liangnian. Photophysical Properties of 5,10,15-Tris(Pentafluorophenyl) Corrole and Its Porphyrin Analogue[J]. Acta Optica Sinica, 2008, 28(12): 2375.

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