Cyano-Functionalized Bithiophene Imide-Based n-Type Polymer Semiconductors: Synthesis, Structure-Property Correlations, and Thermoelectric Performance
DC Field | Value | Language |
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dc.contributor.author | Feng, Kui | - |
dc.contributor.author | Guo, Han | - |
dc.contributor.author | Wang, Junwei | - |
dc.contributor.author | Shi, Yongqiang | - |
dc.contributor.author | Wu, Ziang | - |
dc.contributor.author | Su, Mengyao | - |
dc.contributor.author | Zhang, Xianhe | - |
dc.contributor.author | Son, Jae Hoon | - |
dc.contributor.author | Woo, Han Young | - |
dc.contributor.author | Guo, Xugang | - |
dc.date.accessioned | 2021-08-30T03:58:42Z | - |
dc.date.available | 2021-08-30T03:58:42Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2021-01-27 | - |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/50057 | - |
dc.description.abstract | n-Type polymers with deep-positioned lowest unoccupied molecular orbital (LUMO) energy levels are essential for enabling n-type organic thin-film transistors (OTFTs) with high stability and n-type organic thermoelectrics (OTEs) with high doping efficiency and promising thermoelectric performance. Bithiophene imide (BTI) and its derivatives have been demonstrated as promising acceptor units for constructing high-performance n-type polymers. However, the electron-rich thiophene moiety in BTI leads to elevated LUMOs for the resultant polymers and hence limits their n- type performance and intrinsic stability. Herein, we addressed this issue by introducing strong electron-withdrawing cyano functionality on BTI and its derivatives. We have successfully overcome the synthetic challenges and developed a series of novel acceptor building blocks, CNI, CNTI, and CNDTI, which show substantially higher electron deficiencies than does BTI. On the basis of these novel building blocks, acceptor-acceptor type homopolymers and copolymers were successfully synthesized and featured greatly suppressed LUMOs (-3.64 to -4.11 eV) versus that (-3.48 eV) of the control polymer PBTI. Their deep-positioned LUMOs resulted in improved stability in OTFTs and more efficient n-doping in OTEs for the corresponding polymers with a highest electrical conductivity of 23.3 S m(-1) and a power factor of similar to 10 mu W m(-1) K-2. The conductivity and power factor are among the highest values reported for solution-processed molecularly n-doped polymers. The new CNI, CNTI, and CNDTI offer a remarkable platform for constructing n- type polymers, and this study demonstrates that cyano-functionalization of BTI is a very effective strategy for developing polymers with deep-lying LUMOs for high-performance n- type organic electronic devices. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Cyano-Functionalized Bithiophene Imide-Based n-Type Polymer Semiconductors: Synthesis, Structure-Property Correlations, and Thermoelectric Performance | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Woo, Han Young | - |
dc.identifier.doi | 10.1021/jacs.0c11608 | - |
dc.identifier.scopusid | 2-s2.0-85099989743 | - |
dc.identifier.wosid | 000614064400035 | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.143, no.3, pp.1539 - 1552 | - |
dc.relation.isPartOf | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.citation.title | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.citation.volume | 143 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 1539 | - |
dc.citation.endPage | 1552 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
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