中文版 | English
Title

Regioisomeric Cyanated Polythiophenes Bearing Polar Side Chains for n-Type Organic Thermoelectrics

Author
Corresponding AuthorYang, Kun; Guo, Xugang
Publication Years
2023-03-28
DOI
Source Title
ISSN
0024-9297
EISSN
1520-5835
Volume56Issue:6
Abstract
The development of n-type polymers with high thermoelectric performance remains a major challenge for organic thermoelectrics. Herein, by devising two new isomeric cyano-functionalized bithiophene building blocks bearing polar side chains, we report two novel donor-acceptor-configurated n-type polythiophene polymers (BTOgCN-FT and BTCNOg-FT) with regiochemically tuned intramolecular S center dot center dot center dot O noncovalent interactions (INIs) and cyanation patterns for n-type thermoelectric application. The results show that cyanation furnished low-lying LUMO energy levels approaching that of the benchmark n-type polymer N2200 for both polymers (similar to-3.90 eV), which combine with their polar side chain-enabled high dopant miscibility, leading to efficient n-doping efficiencies. Detailed theoretical and experimental studies also suggest that BTOgCN-FT exhibited a more planar backbone conformation and more ordered interchain packing in film state, thus yielding higher electrical values than BTCNOg-FT. Therefore, the polymer BTOgCN-FT eventually displays an optimal power factor (PF) value of 2.77 mu W m-1 K-2, which is higher than that of BTCNOg-FT (1.50 mu W m-1 K-2) and also largely outperforming that of the thoroughly investigated and optimized polymer N2200 (typical PF value of 10-2 mu W m-1 K-2). Our work not only presents two novel structurally simple and isomeric electron-accepting building blocks but also offers valuable structure-property correlations for the future design of highperformance n-type thermoelectric materials.
URL[Source Record]
Indexed By
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
First ; Corresponding
Funding Project
National Natural Science Foundation of China[52173171] ; Guangdong Basic and Applied Basic Research Foundation["JCYJ20220818100617037","2022A1515010935"] ; Shenzhen Science and Technology Innovation Commission[2021M701550] ; China Postdoctoral Science Foundation[2019R1A6A1A11044070] ; National Research Foundation of Korea[22005133] ; null[2022A1515110635]
WOS Research Area
Polymer Science
WOS Subject
Polymer Science
WOS Accession No
WOS:000953138200001
Publisher
ESI Research Field
CHEMISTRY
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:1
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/523976
DepartmentDepartment of Materials Science and Engineering
Affiliation
1.Southern Univ Sci & Technol SUSTech, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
2.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
3.Korea Univ, Res Inst Nat Sci, Dept Chem, Seoul 02841, South Korea
4.Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China
First Author AffilicationDepartment of Materials Science and Engineering
Corresponding Author AffilicationDepartment of Materials Science and Engineering
First Author's First AffilicationDepartment of Materials Science and Engineering
Recommended Citation
GB/T 7714
Li, Jianfeng,Yang, Kun,Wang, Dong,et al. Regioisomeric Cyanated Polythiophenes Bearing Polar Side Chains for n-Type Organic Thermoelectrics[J]. MACROMOLECULES,2023,56(6).
APA
Li, Jianfeng.,Yang, Kun.,Wang, Dong.,Liu, Bin.,Wang, Yimei.,...&Guo, Xugang.(2023).Regioisomeric Cyanated Polythiophenes Bearing Polar Side Chains for n-Type Organic Thermoelectrics.MACROMOLECULES,56(6).
MLA
Li, Jianfeng,et al."Regioisomeric Cyanated Polythiophenes Bearing Polar Side Chains for n-Type Organic Thermoelectrics".MACROMOLECULES 56.6(2023).
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