Neutral and cationic pyridylbutadienes: solvatochromism and fluorescence response with sodium cholate

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dc.contributor.author Agnihotri, Harsha
dc.contributor.author Vasu, Anuji K.
dc.contributor.author Palakollu, Veerabhadraiah
dc.contributor.author Kanvah, Sriram
dc.date.accessioned 2015-09-09T11:21:33Z
dc.date.available 2015-09-09T11:21:33Z
dc.date.issued 2015-08
dc.identifier.citation Agnihotri, Harsha; Vasu, Anuji K.; Palakollu, Veerabhadraiah and Kanvah, Sriram, "Neutral and cationic pyridylbutadienes: solvatochromism and fluorescence response with sodium cholate", Photochemical and Photobiological Sciences, DOI: 10.1039/C5PP00179J, Aug. 2015. en_US
dc.identifier.issn 1474-9092
dc.identifier.uri http://dx.doi.org/10.1039/C5PP00179J
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1897
dc.description.abstract Neutral and cationic diarylbutadienes with pyridine and pyridinium groups as electron acceptor with dimethylamine and diphenylamine as electron donors were synthesized. The absorption and emission properties of these dienes were investigated in homogeneous organic solvents and in sodium cholate media. In strongly polar solvents, both neutral and cationic fluorophores exhibits a bathochromic shift of emission characteristic of intramolecular charge transfer (ICT) excited state. Presence of strongly electron withdrawing pyridinium group induces large absorption (~480 nm) and emission wavelength shifts (near ~680 nm) in polar solvents. This solvatochromic behavior is utilized as a tool to examine the fluorophore-sodium cholate interaction. Significant hypsochromic emission shifts (up to~66 nm) and concomitant intensity enhancement (up to 32-fold) are seen for these fluorophores in the presence of increasing concentrations of sodium cholate. Fluorescence lifetime measurements reveal biexponential decay pattern indicating binding of molecules in distinct cholate environments. en_US
dc.description.statementofresponsibility by Harsha Agnihotri, Anuji K. Vasu, Veerabhadraiah Palakollua and Sriram Kanvah
dc.format.extent vol. 14, no. 12, pp. 2159-2167
dc.language.iso en_US en_US
dc.publisher Royal Society of Chemistry en_US
dc.subject Neutral and cationic en_US
dc.subject Pyridylbutadienes en_US
dc.subject Solvatochromism en_US
dc.subject Solvatochromism en_US
dc.subject Fluorescence Response en_US
dc.subject Sodium Cholate en_US
dc.title Neutral and cationic pyridylbutadienes: solvatochromism and fluorescence response with sodium cholate en_US
dc.type Article en_US
dc.relation.journal Photochemical and Photobiological Sciences


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