| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Steady State and Time-Resolved Fluorescence Dynamics of Triphenylamine Based Oligomers with Phenylene/Thiophene/Furan in Solvents |
| ZENG Qi, LIU Ying-Liang, MENG Kang, ZHAO Xiang-Jie, WANG Shu-Feng, GONG Qi-Huang |
| State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871 |
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| Cite this article: |
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ZENG Qi, LIU Ying-Liang, MENG Kang et al 2009 Chin. Phys. Lett. 26 077810 |
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Abstract 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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| Keywords:
78.47.Jc
78.40.Me
36.20.Ey
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Received: 03 December 2008
Published: 02 July 2009
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