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Low Bandgap pi-Conjugated Copolymers Based on Fused Thiophenes and Benzothiadiazole: Synthesis and Structure-Property Relationship Study
Zhang, Shiming1,2,3; Guo, Yunlong1,2,3; Fan, Haijun1,2,3; Liu, Yao1,2,3; Chen, Hsiang-Yu4; Yang, Guanwen4; Zhan, Xiaowei1,2; Liu, Yunqi1,2; Li, Yongfang1,2; Yang, Yang4
2009-10-15
Source PublicationJOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
ISSN0887-624X
Volume47Issue:20Pages:5498-5508
AbstractA series of low bandgap conjugated polymers consisting of benzothiadiazole alternating with dithienothiophene (DTT) or dithienopyrrole (DTP) unit with or without 3-alkylthiophene bridge have been synthesized. Effect of the fused rings and 3-alkylthiophene bridge on the thermal, optical, electrochemical, charge transport, and photovoltaic properties of these polymers have been investigated. These polymers show broad absorption extending from 300 to 1000 nm with optical bandgaps as low as 1.2 eV; the details of which can be varied either by incorporating 3-alkylthiophene bridge or by replacing DTT with DTP. The LUMO levels (-2.9 to -3.3 eV) are essentially unaffected by the specific choice of donor moiety, whereas the HOMO levels (-4.6 to -5.6 eV) are more sensitive to the choice of donor. The DTT and DTP polymers with 3-alkylthiophene bridge were found to exhibit hole mobilities of 8 x 10(-5) and 3 x 10(-2) cm(2) V(-1) s(-1), respectively, in top-contact organic field-effect transistors. Power conversion efficiencies in the range 0.17-0.43% were obtained under simulated AM 1.5, 100 mW cm(-2) irradiation for polymer solar cells using the DTT and DTP-based polymers with 3-alkylthiophene bridge as donor and fullerene derivatives as acceptor. (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 5498-5508, 2009
KeywordConjugated Polymers Fused Thiophenes Low Bandgap Structure-property Relations Synthesis
DOI10.1002/pola.23601
Indexed BySCI
Language英语
WOS IDWOS:000270692100029
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:94[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66290
Collection中国科学院化学研究所
Corresponding AuthorZhan, Xiaowei
Affiliation1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
2.Chinese Acad Sci, CAS Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
4.Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
Recommended Citation
GB/T 7714
Zhang, Shiming,Guo, Yunlong,Fan, Haijun,et al. Low Bandgap pi-Conjugated Copolymers Based on Fused Thiophenes and Benzothiadiazole: Synthesis and Structure-Property Relationship Study[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2009,47(20):5498-5508.
APA Zhang, Shiming.,Guo, Yunlong.,Fan, Haijun.,Liu, Yao.,Chen, Hsiang-Yu.,...&Yang, Yang.(2009).Low Bandgap pi-Conjugated Copolymers Based on Fused Thiophenes and Benzothiadiazole: Synthesis and Structure-Property Relationship Study.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,47(20),5498-5508.
MLA Zhang, Shiming,et al."Low Bandgap pi-Conjugated Copolymers Based on Fused Thiophenes and Benzothiadiazole: Synthesis and Structure-Property Relationship Study".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 47.20(2009):5498-5508.
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