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Title: Absorption, excitation and emission spectra of direct yellow 8 in aqueous solutions
Authors: Jaiswal, R M P
Singh, N
Jaggi, Neena
Gir, Manoj
Issue Date: Feb-2002
Publisher: NISCAIR-CSIR, India
Abstract: The absorption, excitation and emission spectra of direct yellow 8 [C24H 19N4NaO5S2] have been recorded in aqueous solutions of concentrations between10-4 and 10-6Ml-1 .This has led to the determination of optimum concentrations for the absorption and emission spectra of the compound. Three absorption peaks at λ ~ 395, 287 and 226 nm at the concentration 10-5 Ml-1 have been observed and assigned to 1W←1A (π*← n), 1Lb 1A (secondary π*←π) and 1La 1A (primary π*←π) transitions respectively. Emission spectra of the compound have shown fluorescence at 572, 442 and 345 nm.
Page(s): 89-94
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.40(02) [February 2002]

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