Viscoelastic relaxation of segment orientation in dilute polymer solutions. II. Stiffness dependence of fluorescence depolarization

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Abstract
The memory functions for the orientation of a segment in any position on a linear chain are calculated for a diffusion Gaussian model in the optimized Rouse–Zimm approximation for semiflexible polymer models. The crossover from flexible to rod chains is described and expectations for fluorescence anisotropy, fluorescence quenching, and the mean orientational relaxation time are outlined and discussed.