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dc.contributor.authorDhar, J.en_US
dc.contributor.authorMukhopadhay, T.en_US
dc.contributor.authorYaacobi-Gross, N.en_US
dc.contributor.authorAnthopoulos, T. D.en_US
dc.contributor.authorSalzner, U.en_US
dc.contributor.authorSwaraj, S.en_US
dc.contributor.authorPatil, S.en_US
dc.date.accessioned2016-02-08T09:42:46Z
dc.date.available2016-02-08T09:42:46Z
dc.date.issued2015en_US
dc.identifier.issn1520-6106
dc.identifier.urihttp://hdl.handle.net/11693/21192
dc.description.abstractThree vinylene linked diketopyrrolopyrrole based donor−acceptor (D−A) copolymers have been synthesized with phenyl, thienyl, and selenyl units as donors. Optical and electronic properties were investigated with UV−vis absorption spectroscopy, cyclic voltammetry, near edge X-ray absorption spectroscopy, organic field effect transistor (OFET) measurements, and density functional theory (DFT) calculations. Optical and electrochemical band gaps decrease in the order phenyl, thienyl, and selenyl. Only phenyl-based polymers are nonplanar, but the main contributor to the larger band gap is electronic, not structural effects. Thienyl and selenyl polymers exhibit ambipolar charge transport but with higher hole than electron mobility. Experimental and theoretical results predict the selenyl system to have the best transport properties, but OFET measurements prove the thienyl system to be superior with p-channel mobility as high as 0.1 cm2 V−1 s −1.en_US
dc.language.isoEnglishen_US
dc.source.titleJournal of Physical Chemistry Ben_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/acs.jpcb.5b03145en_US
dc.subjectCyclic voltammetryen_US
dc.subjectElectronic propertiesen_US
dc.subjectEnergy gapen_US
dc.subjectField effect transistorsen_US
dc.subjectHole mobilityen_US
dc.subjectOrganic field effect transistorsen_US
dc.subjectPolymersen_US
dc.subjectUltraviolet spectroscopyen_US
dc.subjectX ray absorption spectroscopyen_US
dc.subjectAmbipolar charge transportsen_US
dc.subjectChemical equationsen_US
dc.subjectDiketopyrrolopyrrolesen_US
dc.subjectNear edge x-ray absorption spectroscopiesen_US
dc.subjectOptical and electronic propertiesen_US
dc.subjectPhotophysical propertiesen_US
dc.subjectStructural effecten_US
dc.subjectUV-Vis absorption spectroscopyen_US
dc.subjectDensity functional theoryen_US
dc.titleEffect of chalcogens on electronic and photophysical properties of vinylene-based diketopyrrolopyrrole copolymersen_US
dc.typeArticleen_US
dc.departmentDepartment of Chemistryen_US
dc.citation.spage11307en_US
dc.citation.epage11316en_US
dc.citation.volumeNumber119en_US
dc.citation.issueNumber34en_US
dc.identifier.doi10.1021/acs.jpcb.5b03145en_US
dc.publisherAmerican Chemical Societyen_US
dc.identifier.eissn1520-5207


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