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Title: Spectroscopic properties and fluorescence quenching of luminol in aqueous medium
Authors: Bhattacharjee, U
Mitra, S
Das, R
Mukherjee, S
Issue Date: Aug-1996
Publisher: NISCAIR-CSIR, India
Abstract: The interaction of 3-aminophthalhydrazide (luminol) with aqueous solution of NaOH and H2SO4 has been studied employing steady-state fluorescence quenching measurements and time-correlated single photon counting technique. From nanosecond lifetime measurements and quantum yields of fluorescence, the radiative and nonradiative decay rate constants are calculated at different pH. It is shown that both the fluorescence quantum yield and rate constants are pH dependent. The quenching of luminol fluorescence is analyzed by using simple Stern-Volmer equation. It is proposed that quenching is due to some exciplex type of hydrogen bonding interaction.
Page(s): 633-638
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.35A(08) [August 1996]

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