A Study of the Electronic Absorption and Emission Spectra of DBDMA Dye: Solvent Effect, Energy Transfer, and Fluorescence Quenching

This study is aimed to shed light on the electronic absorption and emission spectra of DBDMA (2-(1-(difluoroboraneyl)-1,2-dihydroquinolin-2-yl)-2-(1-methylquinoxalin-2-ylidene) acetonitrile) in different solvents. Both types were obtained theoretically produced experimentally The photostability dye was tested, its energy transfer behavior presence oxygen hydrated copper sulfate quenchers investigated. We also gave a qualitative estimation effect acidic media spectra. There good compatibility between calculated measured values many photophysical parameters. has low chemical quantum yield solvents polarities, fluorescence high enough, which confirms, together with excited state lifetime, efficiency as laser emitting range wavelength maxima. rigidity molecule main reason for photochemical stability absence considerable shift result change polarity Geometries ground states optimized using density functional theory (DFT) time-dependent (TD-DFT), respectively. Upon TD-DFT method, UV-Vis illustrated. A slight observed position maximum solvent due compound. no apparent quenching by oxygen. Besides, intersystem crossing (ISC) aeration solution O2 20 min, an explanation peak intensity after exposure gas. rate constant been well.