The tautomerism, solvatochromism and non-linear optical properties of fluorescent 3-hydroxyquinoxaline-2-carboxalidine-4-aminoantipyrine

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The tautomerism, solvatochromism and non-linear optical properties of fluorescent 3-hydroxyquinoxaline-2-carboxalidine-4-aminoantipyrine

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dc.contributor.author V P N Nampoori
dc.contributor.author Mohammed Yusuff,K K
dc.contributor.author Arun,V
dc.contributor.author Mathew,S
dc.contributor.author Robinson,P P
dc.contributor.author Jose,M
dc.date.accessioned 2010-07-09T06:55:58Z
dc.date.available 2010-07-09T06:55:58Z
dc.date.issued 2010-03-20
dc.identifier.citation Science Direct, Cochin University of Science and Technology en_US
dc.identifier.issn DOI: 10.1016/j.dyepig,2010.03.012
dc.identifier.other Dyes and Pigments 87 (2010) 149e157
dc.identifier.other www.elsevier.com/locate/dyepig
dc.identifier.uri http://dyuthi.cusat.ac.in/purl/1761
dc.description.abstract The Schiff base, 3-hydroxyquinoxaline-2-carboxalidine-4-aminoantipyrine, was synthesized by the condensation of 3-hydroxyquinoxaline-2-carboxaldehyde with 4-aminoantipyrine. HPLC, FT-IR and NMR spectral data revealed that the compound exists predominantly in the amide tautomeric form and exhibits both absorption and fluorescence solvatochromism, large stokes shift, two electron quasireversible redox behaviour and good thermal stability, with a glass transition temperature of 104oC. The third-order non-linear optical character was studied using open aperture Z-scan methodology employing 7 ns pulses at 532 nm. The third-order non-linear absorption coefficient, b, was 1.48 x 10-6 cm W-1 and the imaginary part of the third-order non-linear optical susceptibility, Im c(3), was 3.36 x10-10 esu. The optical limiting threshold for the compound was found to be 340 MW cm-2. en_US
dc.language.iso en en_US
dc.publisher Elsevier, Journal of Dyes and Pigments en_US
dc.subject Schiff base en_US
dc.subject Quinoxalines en_US
dc.subject Tautomerism en_US
dc.subject Fluorescence en_US
dc.subject Solvatochromism en_US
dc.subject Non-linear optical behaviour en_US
dc.title The tautomerism, solvatochromism and non-linear optical properties of fluorescent 3-hydroxyquinoxaline-2-carboxalidine-4-aminoantipyrine en_US
dc.type Working Paper en_US


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