Concerning the participation of the anthracene/N,N-dimethylaniline exciplex in anthracene photodimerization

Journal Article · Wed Feb 02 04:00:00 EST 1977 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00445a035· OSTI ID:7318308

Saltiel, J; Townsend, D E; Watson, B D; Shannon, P; Finson, S L

Steady-state and transient fluorescence measurements have been made using mixtures of anthracene and N,N-dimethylaniline in benzene. These measurements show that the exciplex lifetime is shortened as the N,N-dimethylaniline concentration is increased, possibly due to the formation of a triplex. The exciplex lifetime is independent of anthracene concentration for (A) less than or equal to 0.03 M, but decreases at high anthracene concentration. A study of anthracene photodimerization suggests that the exciplex or a higher excited aggregate participates in this reaction at high anthracene concentration and that the presence of oxygen enhances dianthracene yields. Rate constants for several of the photophysical and photochemical processes are reported.

• Research Organization: Florida State Univ., Tallahassee
• OSTI ID: 7318308
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 99:3; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400500* -- Photochemistry
AMINES
ANTHRACENE
AROMATICS
BENZENE
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMISTRY
CONDENSED AROMATICS
DIMERIZATION
ENERGY LEVELS
EXCITED STATES
FLUORESCENCE
HYDROCARBONS
INTERMEDIATE STRUCTURE
LUMINESCENCE
ORGANIC COMPOUNDS
PHOTOCHEMISTRY
POLYMERIZATION
QUANTITY RATIO
YIELDS