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dc.citation.endPage 3622 -
dc.citation.number 14 -
dc.citation.startPage 3616 -
dc.citation.volume 5 - Yu, Hojeong - Kim, Hyong Nam - Song, Inho - Ha, Yeon Hee - Ahn, Hyungju - Oh, Joon Hak - Kim, Yun-Hi - 2023-12-21T22:36:21Z - 2023-12-21T22:36:21Z - 2017-04-27 - 2017-04 -
dc.description.abstract Although the effects of alkyl chain spacers have been extensively studied for p-type conjugated polymers with a donor (D)-acceptor (A) repeating unit, few studies have examined their effects for n-type polymers with an A-D-A architecture having two different acceptors in the repeating unit. Herein, diketopyrrolopyrrole-thiophene-bithiazole A-D-A type polymer semiconductors (DPPBTz) containing branched alkyl chains of 24-alkyl with C1 spacer (P-24-DPPBTz) and 29-alkyl with C6 spacer (P-29-DPPBTz) were designed and synthesized to elucidate the effect of the alkyl chain branching position on the electron-dominant charge transport system. Due to the strong electron deficiency and trans-planar conformation of the bithiazole group, DPPBTz-based polymer semiconductors exhibit n-type dominant electrical properties with a high electron mobility of up to 1.87 cm2 V-1 s-1. Systematic studies on the photophysical properties, thin-film microstructures, and electrical properties of the DPPBTz polymers revealed that upon modification of the branching position, A-D-A n-type dominant semiconductors differently behave compared to D-A p-type dominant semiconductors. This is attributed to the relatively weaker intermolecular interactions in A-D-A type semiconductors, making the C1 spacer more efficient for electron transport. These findings reveal the molecular design rule of alkyl side-chains in A-D-A n-type-dominant conjugated polymers for the first time. -
dc.identifier.bibliographicCitation JOURNAL OF MATERIALS CHEMISTRY C, v.5, no.14, pp.3616 - 3622 -
dc.identifier.doi 10.1039/c7tc00044h -
dc.identifier.issn 2050-7526 -
dc.identifier.scopusid 2-s2.0-85017103055 -
dc.identifier.uri -
dc.identifier.url!divAbstract -
dc.identifier.wosid 000398950500024 -
dc.language 영어 -
dc.title Effect of alkyl chain spacer on charge transport in n-type dominant polymer semiconductors with a diketopyrrolopyrrole-thiophene-bithiazole acceptor-donor-acceptor unit -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Materials Science, Multidisciplinary; Physics, Applied -
dc.relation.journalResearchArea Materials Science; Physics -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordPlus FIELD-EFFECT TRANSISTORS -
dc.subject.keywordPlus HIGH-PERFORMANCE AMBIPOLAR -
dc.subject.keywordPlus THIN-FILM TRANSISTORS -
dc.subject.keywordPlus SOLID-STATE ORDER -
dc.subject.keywordPlus HIGH-MOBILITY -
dc.subject.keywordPlus SIDE-CHAINS -
dc.subject.keywordPlus ELECTRON MOBILITIES -
dc.subject.keywordPlus CONJUGATED POLYMERS -
dc.subject.keywordPlus PRINTED TRANSISTORS -
dc.subject.keywordPlus CARRIER MOBILITY -


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