物理化学学报2017，Vol.33Issue(11)：2191-2198,8.DOI:10.3866/PKU.WHXB201705242
离子液体[Bmim][BF4]中卟啉的三线态动力学
Triplet Excited State Dynamics of Porphyrin in Ionic Liquid [Bmim][BF4]
摘要
Abstract
Room temperature ionic liquids (RTILs) have been extensively studied with various applications owing to their non-volatility,excellent stability,good electrochemical properties and they can be easily manipulated by designing an appropriate structure and property.They differ from conventional solvents in that they have structural heterogeneity,which is one of the most essential natures of RTILs.In this work,the triplet excited state dynamics of meso-tetraphenylporphyrin (TPP) in the ionic liquid [Bmim][BF4] were studied,and it was observed that the triplet state lifetime of TPP increases remarkably from 2.95 to 184 μs upon laser irradiation.These results of the dynamics of TPP triplet excited state are probably caused by the laser-induced microstructure changes of the ionic liquid,and the redistribution of oxygen molecules polarized by the external laser field and/or the ions in the heterogeneous microenvironment of the ionic liquid upon laser irradiation.关键词
离子液体/微不均匀性结构/分子探针/三线态动力学/卟啉Key words
Ionic liquid/Structural heterogeneity/Molecular probe/Triplet state dynamics/Porphyrin分类
化学化工引用本文复制引用
马仁君,郭前进,李博轩,夏安东..离子液体[Bmim][BF4]中卟啉的三线态动力学[J].物理化学学报,2017,33(11):2191-2198,8.基金项目
The project was supported by the National Natural Science Foundation of China (21333012,21673252,21373232).国家自然科学基金(21333012,21673252,21373232)资助项目 （21333012,21673252,21373232）
