Citation: Er Fu Huo, Yong Zou, Hui Qin Sun, Yan Huang, Zhi Yun Lu, Qing Jiang. Synthesis and characterization of novel conjugated polymers based on 3-cyclobutene-l,2-dione moiety[J]. Chinese Chemical Letters, ;2011, 22(11): 1326-1330. doi: 10.1016/j.cclet.2011.05.025 shu

Synthesis and characterization of novel conjugated polymers based on 3-cyclobutene-l,2-dione moiety

Er Fu Huo ^a, ,
Yong Zou ^a ,
Hui Qin Sun ^b ,
Yan Huang ^a ,
Zhi Yun Lu ^a ,
Qing Jiang ^a

a College of Chemistry, Sichuan University, Chengdu 610064, China;
b Analytical & Testing Center, Sichuan University, Chengdu 610064, China

Received Date: 3 March 2011

Fund Project: The authors gratefully thank the financial supports of the National Natural Science Foundation of China (Nos.50803040 and 20872103) and Analytical&Testing Center of Sichuan University for NMR measurements.

Three novel conjugated polymers bearing 3, 4-bis(4-hexylthiophen-2-yl)-3-cyclobutene-l, 2-dione unit in their main chain have been synthesized successfully in good yields through Suzuki or Stille coupling reaction. Their molecular structures have been confirmed by FT-IR, ¹H NMR and ¹³C NMR. All these copolymers exhibit broad and strong absorption bands in UV-vis region, and their optical band gaps are calculated to be 1.6-2.0 eV, suggesting that they have good coverage with the solar spectrum. These polymers have good thermostability and solubility in common organic solvents. Moreover, all these objective macromolecules possess high electron affinity of~3.8 eV determined from cyclic voltammetry measurement, implying that they are potential n-type polymeric photovoltaic materials.
- Conjugated polymers,
- 3-Cyclobutene-l,2-dione,
- High electron affinity,
- Photovoltaic materials
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