Rotational reorientation times of a polar molecule neutral red (NR) have been measured in n-alkanes using steady-state fluorescence depolarization technique. The rotational dynamics of NR in alkanes is described by the Stokes–Einstein–Debye hydrodynamic theory with slip boundary condition. However, we have observed that as the size of the solvent molecule becomes bigger than the size of the solute molecule, the probe molecule experiences reduced friction and the experimentally measured reorientation times are shorter than those predicted by the hydrodynamic theory. These size effects have been analyzed using quasihydrodynamic theories.
How to translate text using browser tools
1 October 2000
Rotational Relaxation of Neutral Red in Alkanes: Effect of Solvent Size on Probe Rotation¶
M. K. Singh
ACCESS THE FULL ARTICLE
It is not available for individual sale.
This article is only available to subscribers.
It is not available for individual sale.
It is not available for individual sale.
Photochemistry and Photobiology
Vol. 72 • No. 4
October 2000
Vol. 72 • No. 4
October 2000