Probing solute{endash}solvent electrostatic interactions: Rotational diffusion studies of 9,10-disubstituted anthracenes

Journal Article · Thu May 01 00:00:00 EDT 1997 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.474119· OSTI ID:565269

Hartman, R S ^[1]; Konitsky, W M; Waldeck, D H ^[2]; Chang, Y J; Castner, Jr, E W ^[3]

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1. Department of Chemistry, LaRoche College, Pittsburgh, Pennsylvania 15237 (United States)
2. Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)
3. Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)

The rotational diffusion of 9,10-disubstituted anthracenes is studied in various solvents. By systematic variation of the anthracene functionalities the influence of the electrostatic properties of the solute on the solute{endash}solvent frictional coupling is investigated. These studies explore the range of validity of continuum based dielectric friction models for describing the frictional coupling. It is found that a continuum model of the solvent with an extended charge distribution for the solute is adequate in unassociated solvents, but does not adequately describe the friction in the associated solvent, benzyl alcohol. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 565269
• Journal Information: Journal of Chemical Physics, Vol. 106, Issue 19; Other Information: PBD: May 1997
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
ANTHRACENE
DIFFUSION
BENZYL ALCOHOL
SOLVENT PROPERTIES
ORGANIC COMPOUNDS
FLUORESCENCE
PHOTOLUMINESCENCE
ELECTROSTATICS
ROTATIONAL STATES
COUPLING
CHARGE DISTRIBUTION
FRICTION
ORGANIC SOLVENTS
SOLUTES
ORIENTATION
LIFETIME