1099-0518/asset/olbannerleft.gif?v=1&s=fc20dbd19f6b9e174aeaebd5b857bc6a2086bac1)
1099-0518/asset/olbannerright.gif?v=1&s=868808a544e30480468a320e0fa53c0c810010ad)
Article
Synthesis and properties of polythiophene derivatives containing triphenylamine moiety and their photovoltaic applications
Article first published online: 9 MAY 2008
DOI: 10.1002/pola.22737
Copyright © 2008 Wiley Periodicals, Inc.
Issue
Journal of Polymer Science Part A: Polymer Chemistry
Volume 46, Issue 12, pages 3970–3984, 15 June 2008
Additional Information
How to Cite
Li, Y., Xue, L., Xia, H., Xu, B., Wen, S. and Tian, W. (2008), Synthesis and properties of polythiophene derivatives containing triphenylamine moiety and their photovoltaic applications. Journal of Polymer Science Part A: Polymer Chemistry, 46: 3970–3984. doi: 10.1002/pola.22737
Publication History
- Issue published online: 9 MAY 2008
- Article first published online: 9 MAY 2008
- Manuscript Accepted: 6 MAR 2008
- Manuscript Received: 22 JAN 2008
Funded by
- National Natural Science Foundation of China. Grant Number: 50673035
- Program for Changjiang Scholars and Innovative Research Team in University. Grant Number: IRT0422
- Plan for New Century Excellent Talents in Universities of China Ministry of Education
- Research Project of Jilin Province. Grant Number: 20060702
- Research Project of Changchun City. Grant Number: 06GH03
- Science Fund of State Key Laboratory of Polymer Physics and Chemistry (Changchun Institute of Applied Chemistry)
- Abstract
- Article
- References
- Cited By
Keywords:
- copolymerization;
- conjugated polymers;
- UV-vis spectroscopy;
- electrochemistry
Graphical Abstract
A series of novel polythiophene derivatives containing triphenylamine moiety was synthesized by Grignard metathesis (GRIM) method. The polythiophene derivatives displayed excellent thermal stability, good film-forming properties, and good solubility. Fine-tuned polymers exhibited intramolecular energy transfer, controlled conjugated length, and broad absorption. Furthermore, the relatively high oxidation potential and low HOMO level of polymers showed good air stability and high open circuit voltage for photovoltaic cells, respectively. Bulk heterojunction photovoltaic devices were fabricated from the synthesized polymers and they exhibited power conversion efficiencies between 0.014% and 0.45%.
Abstract
A series of novel soluble polythiophene derivatives containing triphenylamine moiety were synthesized by Grignard metathesis (GRIM) method. The structures of the polymers were characterized and their physical properties were investigated. High molecular weight (Mn up to 25,800 g/mol) and thermostable polymers were obtained. The absorption spectra demonstrated that the absorption wavelength of the polymers could be tuned dramatically by introducing thiophene units in the main chain of the polymers. Photoluminescence spectra indicated that there was intramolecular energy transfer from the side chain to the main chain, and the maximum emission was red-shifted gradually with the increase of thiophene units in the main chain. Cyclic voltammetry displayed that the polymers possessed relatively high oxidation potential, which promised good air stability and high open circuit voltage for photovoltaic cells application. Finally, bulk heterojunction photovoltaic devices were fabricated by using the polymers as donors and (6,6)-phenyl C61-butyric acid methyl ester (PCBM) as acceptor. The maximal open circuit voltage of the photovoltaic cells reached 0.71–0.87 V and the power conversion efficiencies of the devices were measured between 0.014% and 0.45% under white light at 100 mW/cm2. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 3970–3984, 2008