Steady State and Time-Resolved Fluorescence Dynamics of Triphenylamine Based Oligomers with Phenylene/Thiophene/Furan in Solvents

被引：0
作者：
Zeng Qi [1 ]
Liu Ying-Liang [1 ]
Meng Kang [1 ]
Zhao Xiang-Jie [1 ]
Wang Shu-Feng [1 ]
Gong Qi-Huang [1 ]
机构：
[1] Peking Univ, State Key Lab Mesoscop Phys, Dept Phys, Beijing 100871, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2009年 / 26卷 / 07期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
2-PHOTON ABSORPTION PROPERTIES; NONLINEAR-OPTICAL PROPERTIES; ULTRAFAST DYNAMICS; DERIVATIVES; CHROMOPHORE; COPOLYMERS; POLYMERS; SPECTRA; CORE;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the photo-physical properties of a series of triphenylamine-based oligomers by steady-state and picosecond transient fluorescence measurements in solvents. The oligomers are composed alternatively with triphenylamine and phenylene/thiophene/furan group, bridged by vinyl group (PNB/PNT/PNF). Their fluorescence spectra show bathochromic phenomenon with solvent polarity and viscosity increasing. The fluorescence decays are bi-exponential for PNB and PNT, and tri-exponential for PNF in THF and aniline. The strong viscosity dependence suggests conformational relaxation along the PNF chain after photo excitation.
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