Synthesis and Characterization of Copolymers Consisting of 3-Hexylthiophene and Biphenyl Derivatives

Fu De Liu; Yong Zhou; Hai Yan Wu

doi:10.4028/www.scientific.net/AMM.331.478

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 331Synthesis and Characterization of Copolymers...

Synthesis and Characterization of Copolymers Consisting of 3-Hexylthiophene and Biphenyl Derivatives

Abstract:

Two novel copolymers consisting of 3-hexylthiophene and 4,4-di (thiophen-2-yl) biphenyl (DTBHT) or 4,4-di (thiophen-2-yl)-2-nitrobiphenyl (DTNHT) were synthesized. Both of the copolymers show lower HOMO energy level (-5.62, -5.51 eV) than that of the P3HT (-5.1 eV). Compared to DTBHT, adding nitro group in DTNHT improves effective conjugation of the main chain and successfully lowers the electrochemical bandgap of the copolymers from 2.39 to 2.28 eV and optical band-gap from 2.17 to 2.07 eV with significant increase in fluorescence quantum yield from 0.140 to 0.252. Keywords: biphenyl, 3-Hexylthiophene, conjugated polymer

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Applied Mechanics and Materials (Volume 331)

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478-482

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https://doi.org/10.4028/www.scientific.net/AMM.331.478

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July 2013

Authors:

Fu De Liu, Yong Zhou, Hai Yan Wu

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3-Hexylthiophene, Biphenyl, Conjugated Polymer

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