Synthesis and Photoelectric Properties of D-A Copolymers Based on 6,7-Difluoroquinoxaline
WANG Zhong-liang1,2, ZHAO Xiao-li2, YANG Da-lei2, LI Zi-dong2, ZHANG Tong2, YIN Li1
1. Institute of Chemical Engineering, Changchun University of Technology, Changchun 130012, China;2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
A series of conjugated copolymers(PT-TFQ, PTT-TFQ and PTTT-TFQ) based on fluorinated thiophenequinoxaline(TFQ) were designed and synthesized by Stille reaction using thiophene, 2,2′-bithiophene or 2,2′∶5′,2″-terthiophene as the donor, and the fluorinated quinoxaline thiophene as the receptor, respectively. The structures were characterized by 1H NMR. The effects of different number of thiophene rings on UV-Vis absorption spectra, energy levels, electrochemical behavior and photovoltaic performance were systematically investigated. The results showed that λmax of PT-TFQ, PTT-TFQ and PTTT-TFQ in CHCl3 solution were 545 nm, 578 nm and 649 nm, and exhibited a red shift of 81 nm, 97 nm and 44 nm in film, respectively. The open circuit voltage of PTTFQ, PTTTFQ and PTTTTFQ were 0.86 V, 0.60 V and 0.50 V, and the polymer solar cells based on them exhibited power conversion efficiencies of 3.19%, 3.10% and 2.63%, respectively.
王忠亮， 赵晓礼， 杨大磊， 李自东， 张通， 尹丽. 基于氟代喹喔啉D-A型共轭聚合物的合成及其光电性能[J]. 合成化学, 2015, 23(11): 1017-1021.
WANG Zhong-liang, ZHAO Xiao-li, YANG Da-lei, LI Zi-dong, ZHANG Tong, YIN Li. Synthesis and Photoelectric Properties of D-A Copolymers Based on 6,7-Difluoroquinoxaline. Chinese Journal of Synthetic Chemistry, 2015, 23(11): 1017-1021.
2015, Vol. 23 
