Open AccessAnion Induced Fluorescence Quenching of Various Aromatic Amino Fluorophores
Author(s) -
N Radha,
M. Swaminathan
Publication year - 2021
Publication title -
international journal of advanced research in science, communication and technology
Language(s) - English
Resource type - Journals
ISSN - 2581-9429
DOI - 10.48175/ijarsct-2378
Subject(s) - quenching (fluorescence) , fluorophore , fluorescence , photochemistry , chemistry , ion , singlet state , electron transfer , organic chemistry , excited state , atomic physics , physics , quantum mechanics
Fluorescence quenching of 2-amino7-bromofluorine (2ABF) and 4,4-diaminodiphenyl sulphone (4DADPS),) ] by inorganic anions Cl-, Br–, SO42– SO32–, S2O32–, CO32–, NO3–, & HPO42– have been studied in 95% (v/v) water–ethanol mixture medium..The quenching was found to be dynamic in all systems. The plots of log kq values with singlet transition energy (Es) of the fluorophore and with ECTTS of the quencher are linear indicating the presence of electron-transfer quenching mechanism. ΔGTH values for charge transfer quenching have been determined for aminodiphenylsulphone.