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Title: Fluorescence quenching of a few aromatic amines by inorganic anions
Authors: Sarpal, Ranjit S
Dogra, Sneh K
Issue Date: Feb-1994
Publisher: NISCAIR-CSIR, India
Abstract: Inorganic anions-induced fluorescence quenching of seven aromatic amines has been studied up to 0.1M concentration. The fluorescence intensities of all the aromatic amines (except aniline) remain unaffected when CI- and SCN- are used as quenchers, whereas sufficient decrease in the fluorescence intensities is noticed when Br- and I- are used as quenchers. Based on the results obtained in the case of aniline, the fluorescence quenching efficiency of the anions can be ordered as: SCN- < Br- < I-. Observed results cannot be explained completely either by spin-orbit coupling interaction or by charge transfer mechanism, although the latter seems to be more appropriate as log kq cannot be correlated with the spin-orbit coupling constants of the quencher atom when aniline is considered.
Page(s): 111-114
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.33A(02) [February 1994]

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