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|Title:||Fluorescence quenching of a few aromatic amines by inorganic anions|
|Authors:||Sarpal, Ranjit S|
Dogra, Sneh K
|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.|
|Appears in Collections:||IJC-A Vol.33A(02) [February 1994]|
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