Synthesis and Optical/Electrochemical Properties of Conjugated Polymers with Diphenyl and Thiophene in Main Chain

Qing Xiu Wang; Li Jie Duan; Bo Yang Qu; Juan Wang; Fu De Liu

doi:10.4028/www.scientific.net/AMR.1035.497

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1035Synthesis and Optical/Electrochemical Properties...

Synthesis and Optical/Electrochemical Properties of Conjugated Polymers with Diphenyl and Thiophene in Main Chain

Abstract:

Two thiophene derivatives 4,4'-di (thiophen-2-yl) biphenyl and 4,4'-di (thiophen-2-yl) -2-nitrobiphenyl ,which were used as monomers for preparing poly (4,4'-di (thiophen-2-yl) biphenyl) (DPBT) and poly (4,4'-di (thiophen-2-yl)-2-nitrobiphenyl) (DPNT) by ferric chloride oxidation polymerization, were synthesized via Suzuki reaction with 4,4'-dibromobiphenyl as the raw material. UV-vis absorption spectra, fluorescence spectra, photoluminescence spectra and electrochemical properties of the polymers were recorded and used for calculating the band-gap (E_g), HOMO orbital energy (E_HOMO) and LUMO orbital energy (E_LUMO) of the polymers. The calculation results indicated that attaching an electron-withdrawing group such as-NO₂ to the main chain can lower band-gap and increase the maximum absorption wavelength.

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Proceedings of 2014 International Conference on Material Science and Engineering

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Periodical:

Advanced Materials Research (Volume 1035)

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497-501

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https://doi.org/10.4028/www.scientific.net/AMR.1035.497

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Online since:

October 2014

Authors:

Qing Xiu Wang, Li Jie Duan, Bo Yang Qu, Juan Wang, Fu De Liu*

Keywords:

Biphenyl, Electrochemical Properties, Nitro Group, Optical Property, Polythiophene

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