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Fluorescence study of the weak interaction between pyrene and quaternary ammonium groups

โœ Scribed by Mats Almgren; Bo Medhage; Emad Mukhtar

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
720 KB
Volume
59
Category
Article
ISSN
1010-6030

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โœฆ Synopsis

Systems containing pyrene and tetraalkylammonium halides (R,NX) were investigated using time-resolved and steady state fluorescence techniques.

The existence of a previously suggested weak interaction between pyrene and quaternary ammonium groups is confirmed and is further verified by solubility measurements. The quenching of pyrene fluorescence by R,NBr is a synergistic effect, requiring Brand enhanced by the simultaneous presence of the quaternary ammonium ion. The presence of tetraalkylammonium halides also affects the efficiency of pyrene excimer formation.

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