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Regioregular, yet ductile and amorphous indacenodithiophene-based polymers with high-mobility for stretchable plastic transistors

Title
Regioregular, yet ductile and amorphous indacenodithiophene-based polymers with high-mobility for stretchable plastic transistors
Authors
Cho Y.Park S.Jeong S.Yang H.Lee B.Lee S.M.Lee B.H.Yang C.
Ewha Authors
이병훈
SCOPUS Author ID
이병훈scopus
Issue Date
2021
Journal Title
Journal of Materials Chemistry C
ISSN
2050-7534JCR Link
Citation
Journal of Materials Chemistry C vol. 9, no. 30, pp. 9670 - 9682
Publisher
Royal Society of Chemistry
Indexed
SCOPUS scopus
Document Type
Article
Abstract
In the past decade, various high-performing π-conjugated polymers based on axisymmetric cyclopentadithiophene (CDT) and centrosymmetric indacenodithiophene (IDT) units have been thoroughly studied for use in organic field-effect transistors. However, no comparative set of data between CDT- and IDT-based polymers is available with a focus on relevant change in optoelectronic and morphological properties. Herein, we report the synthesis and characterization of four regioregular, well-defined donor-acceptor polymers (P1-P4), comprising different compositions of CDT and IDT donors in conjugation with the asymmetric 5-fluoro-2,1,3-benzothiadiazole acceptor that is precisely oriented in the regular pattern along the backbone. Morphological analyses of the above polymer series show that exclusive CDT donor-containingP1is semicrystalline, whereas the others (IDT donor-containing ones) are near-amorphous in nature. Comparatively, IDT donor-containing polymers have superior hole mobilities; in particular, exclusive IDT donor-containing polymerP4offers a high mobility of 1.67 cm2V−1s−1. In addition, the near-amorphous characteristics render the IDT donor-containing polymer films highly ductile and stretchable. Such superior features, which are associated with excellent charge transport and ductility, demonstrate a promising possibility for application in viable stretchable electronics. © The Royal Society of Chemistry 2021.
DOI
10.1039/d1tc01984h
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엘텍공과대학 > 화학신소재공학전공 > Journal papers
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