Please use this identifier to cite or link to this item: https://idr.l2.nitk.ac.in/jspui/handle/123456789/16256
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dc.contributor.authorKakekochi V.
dc.contributor.authorChatnahalli Gangadharappa S.
dc.contributor.authorNikhil P.P.
dc.contributor.authorKeloth C.
dc.contributor.authorWolcan E.
dc.contributor.authorUdaya Kumar D.
dc.date.accessioned2021-05-05T10:30:03Z-
dc.date.available2021-05-05T10:30:03Z-
dc.date.issued2020
dc.identifier.citationPhotochemical and Photobiological Sciences Vol. 19 , 5 , p. 726 - 736en_US
dc.identifier.urihttps://doi.org/10.1039/d0pp00047g
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/16256-
dc.description.abstractA series of trigonal-shaped molecules (TPyT and TPyP) and a polymer (P2TPy) with donor-acceptor-donor (D-A-D) structural arrangement were designed with thiophene and 2,4,6-trisubstituted pyridine as the backbone i.e., a 4-(4-(decyloxy)phenyl)-2,6-di(thiophen-2-yl)pyridine core structure, for the first time and synthesized via a microwave assisted one pot reaction. The extension of conjugation of the system by substituting thiophene acrylonitrile (TPyT) and phenyl acrylonitriles (TPyP and P2TPy) via low cost condensation reactions improved the linear optical, electronic and thermal properties of the synthesized compounds. Furthermore, the nonlinear absorption (NLA) was also enriched appreciably by increasing the conjugation. The three compounds showed an "effective two-photon absorption" phenomenon with the NLA coefficient (βeff) of the order of 10-10 m W-1. The suitability to be utilized in the fabrication of all-optical limiting devices is best achieved by polymer P2TPy as it exhibits substantially higher βeff (7.02 × 10-10 m W-1) and an extremely low optical limiting threshold (1.42 J cm-2). © 2020 The Royal Society of Chemistry and Owner Societies.en_US
dc.titleFacile synthesis and exploration of excited state assisted two-photon absorption properties of D-A-D type thiophene-pyridine derivativesen_US
dc.typeArticleen_US
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