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Deactivation behaviour of arenes and heteroarenes. VI. quenching of the fluorescence of heteroarenium cations at high concentrations by Jürgen Bendig; Bernd Geppert; Siegrun Helm; Dieter Kreysig is a Chemistry article available to read on EtoBox.

What is Deactivation behaviour of arenes and heteroarenes. VI. quenching of the fluorescence of heteroarenium cations at high concentrations about?

At high concentrations of acridizinium and N-methylacridinium salts in methanol (virtually complete dissociation) a differentiated quenching of fluorescence occurs, since a cation-cation and a cation-anion interaction exist in the excited state. The extent of the fluorescence quenching due to cation-anion interaction is determined by the donor properties of the anions and can be correlated with the corresponding ctparameters. A fluorescence quenching through cation-cation interaction in the excited state (formation of excimers) is only observed in the case of acridizinium salts. These findings are consistent with the ability of cations to cause photodimerization.

Who reads Deactivation behaviour of arenes and heteroarenes. VI. quenching of the fluorescence of heteroarenium cations at high concentrations?

Author

Jürgen Bendig; Bernd Geppert; Siegrun Helm; Dieter Kreysig

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0378-4487)

Published

1978

Language

EN

Field

Chemistry (Physical Sciences)