Excited-state solvation dynamics of meso-tetrakis(4-sulfonatophenyl) porphyrin in solid imidazolium-sulfonate-based ionic liquids

被引：0
|
作者：
Yunfang Zhao [1 ]
Guangyu Gao [2 ]
Shufeng Wang [2 ]
Weijun Jin [1 ]
机构：
[1] College of Chemistry, Beijing Normal University
[2] School of Physics, Peking University
来源：
Science Bulletin | 2014年 / 59(Z1)卷 / Z1期
基金：
中国国家自然科学基金;
关键词：
Solvation dynamics á Meso-tetrakis(4sulfonatophenyl) porphyrin á Ionic liquids á Streak camera;
D O I：
暂无
中图分类号：
O645.1 [液态溶液];
学科分类号：
070304 ; 081704 ;
摘要：
The steady-state absorption and fluorescence emission positions of diprotonated meso-tetrakis(4-sulfonatophenyl)porphyrin(H4TPPS2-)are dependent on the polarity of the selected two solid ionic liquids(ILs)and are red-shifted with the increase of cation size.The solvation dynamics process of H4TPPS2-in these ILs occurs on two well-separated time scales.The short components with121.2–128.6 ps arise from the local motion of the ion-pairs in close proximity to the porphine core,and the long components with 1056.6–1261.8 ps are due to the collective translation motions of the ion-pairs.The dynamic Stokes shifts and the relaxation times increase with the increasing cation size of the ILs.
引用
收藏
页码：492 / 496
页数：5
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