Citation: Qing Zhao, Jing-yu Qian, Ying Liang, Zhi-cheng Zhong, Song Wang, Ke Liu, Wen-jing Tian, Zai-fang Li. Synthesis and Properties of Novel Polymers Based on PD Electron-withdrawing Unit[J]. Chinese Journal of Polymer Science, ;2016, 34(1): 34-43. doi: 10.1007/s10118-016-1738-z shu

Synthesis and Properties of Novel Polymers Based on PD Electron-withdrawing Unit

1.
College of Chemical Engineering and Food Science, Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang 441053, China
2.
State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China

Received Date: 18 June 2015
Revised Date: 17 September 2015

Fund Project: This work was financially supported by the Research Program of 973 Program (No. 2014CB643506), the National Natural Science Foundation of China (No. 21401053), Project of Scientific Research and Development of Xiangyang (Year of 2013), Open Foundation of Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices (HLOM141003), Opening Project of Guangxi Colleges and Universities Key Laboratory of Beibu Gulf Oil and Natural Gas Resource Effective Utilization (No. 2014KLOG03).

In this article, we designed and synthesized a series of 5-(2,6-dimethyl-4H-pyran-4-ylidene)-1,3-diethyl-2-thioxo-dihydropyrimidine-4,6(1H, 5H)-dione (PD) unit based polymers (PFTDT, CZTDT, PHTDT and THTDT) for the first time. In these polymers, fluorene, 2,7-carbazole, phenothiazine and thiophene are employed as electron-donating groups and PD as electron-withdrawing group. TGA measurements demonstrated that these polymers possess good thermal stability (all above 377℃). Very broad absorption spectrum was also obtained from the polymer THTDT (300-850 nm). CV characterization found that these polymers owned low highest occupied molecular orbital (HOMO) energy levels (-5.39 eV for THTDT, -5.49 eV for CZTDT and -5.78 eV for PFTDT) except for PHTDT (-5.17 eV). The geometry and electronic properties of PFTDT, CZTDT, PHTDT and THTDT were investigated by means of theoretical calculation. All the above advantages demonstrate that PD based polymers could be candidates for electronic devices.
- PD unit,
- Polymer,
- Low bandgap,
- Low HOMO energy level
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沈阳化工大学材料科学与工程学院沈阳 110142