ICCAS OpenIR
Low Bandgap Polymers by Copolymerization of Thiophene with Benzothiadiazole
He, Youjun1,2; Wang, Xiang1; Zhang, Jing1,2; Li, Yongfang1
2009-01-02
Source PublicationMACROMOLECULAR RAPID COMMUNICATIONS
ISSN1022-1336
Volume30Issue:1Pages:45-51
AbstractThree low bandgap copolymers of thiophene and benzothiadiazole with electron-donating and electron-withdrawing substituents, P1, P2, and P3, have been synthesized by Pd-catalyzed Stille-coupling. Electronic energy levels of the polymers are estimated by cyclic voltammetry. The polymer films show a broad absorption band in the wavelength range from 300 to 750 nm. can effectively decrease the bandgap of the polymers. Among Me polymers, the polymer that contains the 5,6-dinitrobenzothiadiazole unit, P3, possesses the smallest bandgap of 1.55 eV calculated from its absorption band-edge at approximate to 800 nm. With the increase of the electron-withdrawing ability of the substituents on the benzothiadiazole unit, the energy bandgap of the polymers decreased in the order P1 > P2 > P3. The results indicate that stronger electron-withdrawing substituents on the acceptor unit
KeywordConjugated Polymers D-a Copolymers Electrochemistry Low Bandgap
DOI10.1002/marc.200800507
Indexed BySCI ; IC
Language英语
WOS IDWOS:000262610300008
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/68622
Collection中国科学院化学研究所
Corresponding AuthorLi, Yongfang
Affiliation1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
He, Youjun,Wang, Xiang,Zhang, Jing,et al. Low Bandgap Polymers by Copolymerization of Thiophene with Benzothiadiazole[J]. MACROMOLECULAR RAPID COMMUNICATIONS,2009,30(1):45-51.
APA He, Youjun,Wang, Xiang,Zhang, Jing,&Li, Yongfang.(2009).Low Bandgap Polymers by Copolymerization of Thiophene with Benzothiadiazole.MACROMOLECULAR RAPID COMMUNICATIONS,30(1),45-51.
MLA He, Youjun,et al."Low Bandgap Polymers by Copolymerization of Thiophene with Benzothiadiazole".MACROMOLECULAR RAPID COMMUNICATIONS 30.1(2009):45-51.
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