Effect of Side Chain Substituent Volume on Thermoelectric Properties of IDT-Based Conjugated Polymers

A p-type thermoelectric conjugated polymer based on indacenodithiophene and benzothiadiazole is designed and synthesized by replacing normal aliphatic side chains ( ) with conjugated aromatic benzene substituents ( ). The introduced bulky substituent on is detrimental to form the intensified packing...

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Published inMolecules (Basel, Switzerland) Vol. 26; no. 4; p. 963
Main Authors Xie, De-Xun, Liu, Tong-Chao, Xiao, Jing, Fang, Jing-Kun, Pan, Cheng-Jun, Shao, Guang
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 11.02.2021
MDPI
Subjects
Aliphatic compounds
Benzene
Benzene - chemistry
Chromatography
conjugated polymers
Current carriers
Hydrocarbons
Investigations
Organic Chemicals - chemistry
organic thermoelectric materials
Polymer films
Polymers
Polymers - chemistry
power factor
Power Plants
Sulfur
Temperature
Thermoelectricity
Thin films
United States > US
Japan
organic thermoelectric materials
power factor
conjugated polymers
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Summary:A p-type thermoelectric conjugated polymer based on indacenodithiophene and benzothiadiazole is designed and synthesized by replacing normal aliphatic side chains ( ) with conjugated aromatic benzene substituents ( ). The introduced bulky substituent on is detrimental to form the intensified packing of polymers, therefore, it hinders the efficient transporting of the charge carriers, eventually resulting in a lower conductivity compared to that of the polymers bearing aliphatic side chains ( ). These results reveal that the modification of side chains on conjugated polymers is crucial to rationally designed thermoelectric polymers with high performance.
Bibliography:ObjectType-Article-1
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ISSN:1420-3049
1420-3049
DOI:10.3390/molecules26040963