Journal
CCS CHEMISTRY
Volume 3, Issue 10, Pages 2212-2225Publisher
CHINESE CHEMICAL SOC
DOI: 10.31635/ccschem.021.202101076
Keywords
organic thermoelectric material; structure-property relationship; conjugated backbone; side chain; organic semiconductors
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Funding
- National Key Research and Development Program of China [2017YFA0204700, 2018YF-E0200702]
- Key Research Program of Frontier Sciences of CAS [QYZDY-SSW-SLH024]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDPB13]
- Science and Technology Commission of Shanghai Municipality [18JC1410600]
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The article discusses the development and molecular design concepts of organic thermoelectric (OTE) materials, emphasizing the importance of molecular engineering for high-performance and multifunctional OTE materials.
Organic thermoelectric (OTE) materials have gained widespread attention because of their potential for wearable power generators and solid cooling elements. Nevertheless, the development of state-of-the-art OTE materials still suffers from limited molecular categories because of the rarity of molecular design strategies, which limits further development of this emerging field. Recently, many efforts have been devoted to developing molecular design concepts for high performance OTE materials. In this mini review, we present the fundamentals of the thermoelectric (TE) effect and the basic guidelines for designing OTE materials based on doped semiconductors. Subsequently, we provide an overview of the molecular design of conjugated backbones and side chains for enabling efficient TE conversion, including the effects of the molecular framework, heteroatomic substitution, and side chain length and polarity. Finally, we emphasize the developing tendency of molecular engineering towards high-performance and multifunctional OTE materials.
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