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Title: Synthesis and characterization of a new conjugated polymer bearing pyrazole and thiophene moieties as potent NLO material
Authors: Vishnumurthy, K.A.
Adhikari, A.V.
Sunitha, M.S.
Philip, Reji
Keywords: polymers
electrical conductivity
nonlinear optics
polymer blends
Issue Date: Oct-2011
Publisher: American Chemical Society
Citation: AIP Conference Proceedings, 2011, Vol.1391, p652-654
Abstract: In this communication we describe the design and synthesis of a new conjugated polymer (P) carrying 3,4-dialkoxythiophene, 1,3,4 oxadiazole and pyrazole units, from its monomers through condensation polymerization method. The structure of newly synthesized polymer was established by FT-IR, 1H NMR, elemental analysis and gel permeation chromatographic techniques. Further, its electrochemical, linear and nonlinear optical properties of the polymer have been investigated. The optical and electrochemical band gap was found to be 2.39 eV. Z-scan results reveal that the polymer exhibits strong optical limiting behavior due to effective three-photon absorption (3PA). The value of 3PA coefficient was found to be 1.1×10-20 m3/W2, which is comparable to that of good optical limiting materials. The fluorescence quantum yield of the polymer in solution was determined using quinine sulfate as standard and it was found to be 42%.
Description: Restricted Access.Proceedings of AIP Conference Proceedings Vol.1391 on optics: phenomena, materials, devices, and characterization: Optics 2011: International Conference on Light Solid State Physics, P-652
ISBN: 978-0-7354-0960-6
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Copyright: 2011 American Institute of Physics
Appears in Collections:Research Papers (LAMP)

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