✦ LIBER ✦

Picosecond transient grating study of the reorientation dynamics of nile red in different classes of solvent

✍ Scribed by Eic Vauthey

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 652 KB
Volume: 216
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)90138-q

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✦ Synopsis

The rotational dynamics of nile red has been studied in polar protic, polar aprotic and non-polar solvents. In the non-polar and the aprotic solvents, with the exception of long alkanenitriles, the rotation dynamics is consistent with the prediction of the Stokes-Einstein-Debye hydrodynamics theory for slip and close to the stick boundary condition, respectively. However in protic solvents, the rotation dynamics can be explained in terms of the Stokes-Einstein-Debye hydrodynamics theory under stick boundary condition only if solvent attachment via hydrogen bonding is assumed. The anomalous behaviour observed in longer alkanenitriles has been assigned to the formation of a reverse micelle-like solvation layer around nile red.

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