Wavelength Effects in Fluorescence Quenching. Aromatic Hydrocarbons Quenched by Carbon Tetrachloride
1972; American Institute of Physics; Volume: 57; Issue: 8 Linguagem: Inglês
10.1063/1.1678791
ISSN1520-9032
Autores Tópico(s)Photochemistry and Electron Transfer Studies
ResumoThe origin of wavelength effects in the fluorescence quenching of aromatic hydrocarbons by chlorinated alkanes has been investigated using fluorescence lifetime and fluorescence steady-state techniques and absorption spectroscopy. Evidence was obtained for the presence of ground-state complexes between the aromatic hydrocarbon and the chlorinated alkane in both polar and nonpolar solvents. The kinetics of the fluorescence quenching are consistent with the hypothesis that these ground-state complexes are responsible for the variations of the quenching efficiency with wavelength.
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