Pulse radiolysis study of the triplet sensitized production of singlet oxygen: determination of energy transfer efficiences

Journal Article · Wed Jul 05 04:00:00 EDT 1978 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00482a034· OSTI ID:6660727

Gorman, A A; Lovering, G; Rodgers, M A.J.

The technique of pulse radiolysis has been used to produce aromatic and aromatic carbonyl triplet states in liquid benzene. The quenching of such triplets by O/sub 2/(/sup 3/SIGMA/sub g//sup -/) leads to the production of singlet oxygen (/sup 1/..delta../sub g/), the subsequent reactivity of which has been followed by time-resolved observation of the bleaching of diphenylisobenzofuran (DPBF). Measurement of quenching rate constants together with sensitizer triplet and DPBF bleaching yields has allowed the efficiency of the process for energy transfer to oxygen to be determined. This efficiency varies considerably from sensitizer to sensitizer and appears to be inversely related to the sensitizer intersystem crossing efficiency.

• Research Organization: Univ. of Manchester, Eng.
• OSTI ID: 6660727
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 100:14; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
AROMATICS
BENZENE
BLEACHING
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CONDENSED AROMATICS
CRYOGENIC FLUIDS
DECOMPOSITION
ELEMENTS
ENERGY TRANSFER
FLUIDS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
IRRADIATION
MULTIPLETS
NAPHTHALENE
NONMETALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN
PULSED IRRADIATION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIOLYSIS
TRIPLETS