Picosecond dynamics of benzophenone anion solvation

Journal Article · Thu Jan 14 04:00:00 EST 1993 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100104a007· OSTI ID:6234880

Lin, Y; Jonah, C D ^[1]

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1. Argonne National Lab., IL (United States)

The dynamics of benzophenone anion solvation in alcohols are studied by pulse-radiolysis techniques. The solvation process is characterized by the blue shift of the transient absorption spectrum of the anion and is faster for the smaller alcohols. The anion is solvated more slowly than the electron in the same solvent, but the solvation times of both are similar to [tau][sub 2], the solvent dielectric relaxation time. The familiar phenomenological two-state model of solvation was found to be inappropriate for describing the anion solvation process. A multistate process appears to be a more appropriate description. The authors modeled the kinetics of the spectral relaxation. In most cases, nearly quantitative agreement between the calculated and observed spectra is achieved. The characteristic relaxation times for the alcohol solvents around the anions were also reproduced. 50 refs., 8 figs., 3 tabs.

• OSTI ID: 6234880
• Journal Information: Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 97:2; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600 -- Radiation Chemistry
665000* -- Physics of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ABSORPTION SPECTROSCOPY
ALCOHOLS
ANIONS
BENZOPHENONE
CHARGED PARTICLES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
DECOMPOSITION
DYNAMICS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
HYDROXY COMPOUNDS
IONS
KETONES
KINETICS
LEPTONS
MATHEMATICAL MODELS
MECHANICS
ORGANIC COMPOUNDS
RADIATION EFFECTS
RADIOLYSIS
RELAXATION
RELAXATION TIME
RESOLUTION
SOLVATED ELECTRONS
SOLVATION
SORPTION
SPECTRA
SPECTROSCOPY
TIME RESOLUTION
TIMING PROPERTIES