ISSN:
0006-3525
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Time-resolved fluorescence depolarization was applied to investigate the dynamics of low-molecular-weight polyethylene glycols (MW 150, 400, 1000, 4000) labeled by fluorescein-isothiocyanate. The analysis of measurements revealed considerable flexibility of the polymer chain. To interpret the observed dependence of the relaxation time of polarization anisotropy on the molecular weight of the polymer, a simple freely-hinged dumbbell model was developed. The properties of the model were investigated by computer experiments. The model was found to account well for the measured data.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/bip.360220505
Permalink