Fluorescence Energy Transfer and Oxygen Quenching in Solutions of Diphenyloxazole in Cyclohexane

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.1732685· OSTI ID:4807347

Weinreb, Arye

The fluorescent intensity of solutions of diphenyloxazole (PPO) in cyclohexane is measured as a function of concentration for excitation by gamma rays. The fluorescence spectrum of the solutions when excited by uv is also recorded. These uv measurements, together with the results of BETA excitation, were used to examine the quenching influence of oxygen on the solute fluorescence and on the encrgy transfcr froni cyclohexane. The decay times of the solutions are measured. The results are interpreted to show: a tendency of PPO to form molecular complexes in cyclohexane and a static character for the oxygen quenching of cyclohexane. The dependence of transfer probability on solute concentration is discussed.

• Research Organization: Argonne National Lab., Ill.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-011720
• OSTI ID: 4807347
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 4 Vol. 36; ISSN JCPSA6; ISSN 0021-9606
• Publisher: American Institute of Physics (AIP)
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
BETA PARTICLES
BINDING ENERGY
COMPLEXES
CYCLOALKANES
DECAY
DECOMPOSITION
EXCITATION
FLUORESCENCE
GAMMA RADIATION
HEAT TREATMENTS
HEXANE
MEASURED VALUES
ORGANIC NITROGEN COMPOUNDS
OXYGEN
PHENYL RADICALS
QUANTITY RATIO
QUENCHING
SOLUTIONS
SPECTRA
STATISTICS
ULTRAVIOLET RADIATION