Please use this identifier to cite or link to this item: https://idr.l2.nitk.ac.in/jspui/handle/123456789/13213
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dc.contributor.authorManjunatha, M.G.-
dc.contributor.authorAdhikari, A.V.-
dc.contributor.authorHegde, P.K.-
dc.contributor.authorSuchand, Sandeep, C.S.-
dc.contributor.authorPhilip, R.-
dc.date.accessioned2020-03-31T08:45:24Z-
dc.date.available2020-03-31T08:45:24Z-
dc.date.issued2010-
dc.identifier.citationJournal of Polymer Research, 2010, Vol.17, 4, pp.495-502en_US
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/13213-
dc.description.abstractA new donor-acceptor-type conjugated polymer (P1) carrying 3,4-diphenylthiophene, 2,5-dihexyloxybenzene, and 1,3,4-oxadiazole units was synthesized through multistep reactions. The polymer was prepared using a polyhydrazide precursor route. The polymer has a well-defined structure and exhibits good thermal stability, with a decomposition onset temperature in nitrogen of 300 C. Cyclic voltammetry experiments revealed that the polymer has low-lying LUMO (-3.68 eV) and high-lying HOMO (-5.78 eV) energy levels. The electrochemical band gap was found to be 2.10 eV. The UV-visible absorption spectrum of the polymer presented a maximum at 373 nm, and it displayed bluish-green fluorescence in dilute chloroform solution. The nonlinear optical properties of the new polymer were investigated at 532 nm using the Z-scan technique with nanosecond laser pulses. The polymer exhibited strong optical limiting behavior due to excited state absorption, which was phenomenologically similar to a three-photon absorption (3PA) process. The 3PA coefficient ? was found to be 7 10-22 m3/W2. The studies show that the new polymer (P1) is a promising material for developing efficient photonic devices.en_US
dc.titleSynthesis and characterization of a new NLO-active donor-acceptor-type conjugated polymer derived from 3,4-diphenylthiopheneen_US
dc.typeArticleen_US
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