Synthesis, electrochemical and optical studies of new cyanopyridine based conjugated polymers as potential fluorescent materials

Vishnumurthy, K.A.; Sunitha, M.S.; Safakath, K.; Philip, Reji; Adhikari, A.V.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/4171

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DC Field	Value	Language
dc.contributor.author	Vishnumurthy, K.A.	-
dc.contributor.author	Sunitha, M.S.	-
dc.contributor.author	Safakath, K.	-
dc.contributor.author	Philip, Reji	-
dc.contributor.author	Adhikari, A.V.	-
dc.date.accessioned	2011-09-30T04:09:01Z	-
dc.date.available	2011-09-30T04:09:01Z	-
dc.date.issued	2011-07	-
dc.identifier.citation	Polymer, 2011, Vol.52 , p4174	en
dc.identifier.issn	0032-3861	-
dc.identifier.uri	http://hdl.handle.net/2289/4171	-
dc.description	Restricted Access	en
dc.description.abstract	In this communication we describe the design and synthesis of four new conjugated polymers (P1eP4) carrying cyanopyridine in their backbone via Wittig condensation technique. Their structures were well established by FTIR, 1H NMR, elemental analysis and gel permeation chromatographic techniques. They exhibited good thermal stability with the onset decomposition temperature around 300e350 C in nitrogen atmosphere. Further, their electrochemical, linear and third-order non-linear optical properties have been investigated. The polymers showed low electrochemical band gaps in the range of 1.77 e1.99 eV and displayed very good fluorescence emission property in various polar solvents. The fluorescence quantum yields of polymers P1eP4 in tetrahydrofuran (THF) were found to be 35, 42, 38 and 34%, respectively. The effective two-photon absorption coefficients (b) for the polymers were determined by Z-Scan technique and were found to be 1.34 x 10, 1.24 x 10, 3.04 x 10 and 1.85 x 1011 m/W for polymers P1eP4, respectively.	en
dc.language.iso	en	en
dc.publisher	Elsevier Ltd.	en
dc.relation.uri	http://arxiv.org/abs/	en
dc.relation.uri	http://dx.doi.org/10.1016/j.polymer.2011.07.012	en
dc.rights	2011 Elsevier B. V.	en
dc.subject	Dialkoxythiophene	en
dc.subject	Cyanopyridine	en
dc.subject	NLO	en
dc.title	Synthesis, electrochemical and optical studies of new cyanopyridine based conjugated polymers as potential fluorescent materials	en
dc.type	Article	en
Appears in Collections:	Research Papers (LAMP)

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