Synthesis and absorption spectra of n-type conjugated polymers based on perylene diimide

被引：44

作者：

Huo, Lijun ^{[1
]}

Zhou, Yi ^{[1
]}

Li, Yongfang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2008年 / 29卷 / 17期

关键词：

absorption spectra; conjugated polymers; electron affinity; perylene diimide;

D O I：

10.1002/marc.200800268

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Two novel n-type conjugated polymers based on perylene diimide (PDI), poly (PDI-vinylene) (PDIV), and poly(PDI-thienylene) (PDITh), have been designed and synthesized by the Stille coupling reaction. In comparison with the PDI monomer (compound M1), PDIV and PDITh films show a significantly broad absorption band from 380 to 720 nm, and a narrower bandgap of approximate to 1.71 and 1.74 eV, respectively. Cyclic voltammograms of the two polymers display a couple of reversible reduction/re-oxidation (n-doping/dedoping) peaks. The onset reduction (n-doping) potentials of PDIV and PDITh are at -0.62 V and -0.66 V versus Ag/Ag+ respectively, which correspond to the electron affinities (EAs) of 4.09 eV for PDIV and 4.05 eV for PDITh. The EA values of the two polymers are the highest among the n-type conjugated polymers reported to date. The results indicate that PDIV and PDITh could be used as polymer acceptors in all polymer solar cells.

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页码：1444 / 1448

页数：5

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