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Showing papers by "Pradeep K. Sengupta published in 1999"

Journal Article•DOI•
Excited-state intramolecular proton transfer (ESIPT) and charge transfer (CT) fluorescence probe for model membranes

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S.Moses Dennison1, Jayanti Guharay1, Pradeep K. Sengupta1•
Saha Institute of Nuclear Physics1
01 May 1999-Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
TL;DR: In this paper, the photophysical behavior of a synthetic flavonol, namely 4′-N, N -dimethylamino-3-hydroxyflavone (DMA3HF), in model membranes consisting of small unilamellar liposomes of the phospholipids DPPC and DMPC was investigated.

73 citations

Journal Article•DOI•
Influence of different environments on the excited-state proton transfer and dual fluorescence of fisetin

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Jayanti Guharay1, S.Moses Dennison1, Pradeep K. Sengupta1•
Saha Institute of Nuclear Physics1
01 May 1999-Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
TL;DR: In this paper, the influence of different protic and aprotic solvent environments on the excited-state intramolecular proton transfer (ESIPT) leading to a dual fluorescence behaviour of a biologically important, naturally occurring, polyhydroxyflavone, fisetin (3,3′,4′,7-tetrahydroxy flavone), has been investigated.

66 citations

Journal Article•DOI•
Intramolecular excited-state proton transfer and charge transfer fluorescence of a 3-hydroxyflavone derivative in micellar media

[...]

S.Moses Dennison1, Jayanti Guharay1, Pradeep K. Sengupta1•
Saha Institute of Nuclear Physics1
01 Apr 1999-Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
TL;DR: In this paper, the fluorescence emission behavior of 4′- N,N -dimethylamino-3-hydroxyflavone (DMA3HF) has been examined in representative micellar media.

54 citations