Production of singlet molecular oxygen from the O/sub 2/ quenching of the lowest excited singlet state of rubrene

Journal Article · Thu Nov 01 00:00:00 EST 1979 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100485a004· OSTI ID:5549102

Wu, K C; Trozzolo, A M

The efficiencies of the rubrene-sensitized photooxidation of 1,3-diphenylisobenzofuran in benzene, acetone, cyclohexane, n-hexane, and isooctane have been measured. The measured efficiencies are analyzed with data from the oxygen quenching of the rubrene fluorescence in the same solvents. It is shown that about 1.5 molecules of singlet oxygen are produced as a result of the primary process in which a rubrene molecule in the S/sub 1/ state is quenched by ground state oxygen. This indicates that there is a substantial efficiency for the direct production of singlet oxygen by the oxygen quenching of rubrene S/sub 1/ excited states: S/sub 1/ + /sup 3/O/sub 2/ ..-->.. T/sub 1/ + /sup 1/O/sub 2/. 1 figure, 1 table.

• Research Organization: Univ. of Notre Dame, IN
• OSTI ID: 5549102
• Journal Information: J. Phys. Chem.; (United States), Vol. 83:22
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CONDENSED AROMATICS
EXCITED STATES
QUENCHING
FURANS
PHOTOCHEMICAL REACTIONS
ACETONE
BENZENE
BENZOFURANS
CYCLOHEXANE
EFFICIENCY
FLUORESCENCE
HEXANE
OXYGEN
PRODUCTION
ALKANES
AROMATICS
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
CYCLOALKANES
ELEMENTS
ENERGY LEVELS
FLUIDS
HEAT TREATMENTS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
KETONES
LUMINESCENCE
NONMETALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
400500 - Photochemistry