Rotational dynamics of coumarin 153: Time-dependent friction, dielectric friction, and other nonhydrodynamic effects

Journal of Physical Chemistry A

Volumn 101, Issue 6, 1997, Pages 1030-1047

  Horng, M L ^a   Gardecki, J A ^a   Maroncelli, M ^a  

^a PENNSYLVANIA STATE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

DIELECTRIC PROPERTIES; FLUORESCENCE; FRICTION; HYDROCARBONS; HYDRODYNAMICS; OPTICAL VARIABLES MEASUREMENT; SOLVENTS; VISCOSITY;

COUMARIN; DIELECTRIC FRICTION; NONHYDRODYNAMIC EFFECTS; ROTATIONAL DYNAMICS; SUBPICOSECOND FLUORESCENCE ANISOTROPY MEASUREMENT;

MOLECULAR DYNAMICS;

EID: 0031555731     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp962921v     Document Type: Article

References (135)

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126. Our statements here concerning the applicability of the DKS theory are largely confined to the C153 data set. If the DKS theory were to be applied to the collected solute data also shown in Figure 9, the factor of φ in eq 22a would vary somewhat with the solute shape. If this variation were correlated to the solute size, it could lead to a different overall dependence on ρ than the one displayed here.
127. obs = 0.34), which have nearly the same volume. This difference is also observed with solutes other than C153.
128. See for example: Christensen, R. L.; Drake, R. C.; Phillips, D. J. Phys. Chem. 1986, 90, 5960. Barkley, M. D.; Kowalczyk, A. A.; Brand, L. J. Chem. Phys. 1981, 75, 3581 and references therein.
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130. 66
131. 20,89 have already provided very useful compilations of much of the rotational data available up to 1993 and have drawn a number of useful conclusions about solute - solvent coupling on the basis of these data. However, we believe that a more detailed analysis of the solvent dependence of the data in alkane solvents might afford additional insights.
132. Waldeck, D.; Maroncelli, M. Work in progress.
133. 20 Again, measurements of rotational dynamics in two electronic states of the same solute would prove helpful in testing this possibility. However, for now we note that the similarity in the behavior in alcohol and other polar solvents makes such an interpretation appear unlikely.
134. hyd.
135. Kurnikova, M. G.; Waldeck, D. H.; Coalson, R. D. J. Chem. Phys. 1997, 105, 628.