Contribution of electronically excited states to the radiation chemistry of organic systems. Progress report, July 1, 1985-February 28, 1986
Technical Report
·
OSTI ID:6115383
The attachment of thermal electrons by cyclic perfluorocarbons has been shown to enhance the photocurrent from TMPD in solvents in which the electron thermalization range is low. The effect has been studied with perfluorodecalin and perfluoromethylcyclohexane in n-pentane and n-hexane as a function of scavenger concentration, excitation energy and applied electric field strength. The mechanism of the effect suggests a technique for separating epithermal from thermal electron scavenging processes. Contact charge transfer absorption maxima have been located in six hydrocarbon-cyclic perfluorocarbon systems, and correlate well with the known gas-phase ionization potentials of the hydrocarbon. Concentration studies indicate one to one complexes when the hydrocarbon is dissolved in a perfluorocarbon solvent. Fluorescence quantum yields and fluorescence spectra have been obtained for cyclopentane, cycloheptane, cyclooctane, cyclodecane and a number of their alkyl derivatives.
- Research Organization:
- Minnesota Univ., Minneapolis (USA)
- DOE Contract Number:
- FG02-85ER13404
- OSTI ID:
- 6115383
- Report Number(s):
- DOE/ER/13404-1; ON: DE86007753
- Country of Publication:
- United States
- Language:
- English
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Technical Report
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400500 -- Photochemistry
400600* -- Radiation Chemistry
ALKANES
AMINES
CHEMISTRY
CURRENTS
CYCLOALKANES
ELECTRIC CURRENTS
ENERGY LEVELS
EXCITED STATES
FLUORESCENCE
FLUORINATED ALICYCLIC HYDROCARBONS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALICYCLIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HEXANE
HYDROCARBONS
IONIZATION
LUMINESCENCE
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PENTANE
PHOTOCHEMISTRY
PHOTOCURRENTS
PHOTOIONIZATION
RADIATION CHEMISTRY
RESEARCH PROGRAMS
SCINTILLATION QUENCHING
SOLVENT PROPERTIES
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400500 -- Photochemistry
400600* -- Radiation Chemistry
ALKANES
AMINES
CHEMISTRY
CURRENTS
CYCLOALKANES
ELECTRIC CURRENTS
ENERGY LEVELS
EXCITED STATES
FLUORESCENCE
FLUORINATED ALICYCLIC HYDROCARBONS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALICYCLIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HEXANE
HYDROCARBONS
IONIZATION
LUMINESCENCE
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PENTANE
PHOTOCHEMISTRY
PHOTOCURRENTS
PHOTOIONIZATION
RADIATION CHEMISTRY
RESEARCH PROGRAMS
SCINTILLATION QUENCHING
SOLVENT PROPERTIES