Flexibility of a labeled polymer chain: Time‐resolved fluorescence depolarization measurements and their interpretation by a Hinged‐Dumbbell model
作者： J. Ricka , K. Amsler , Th. Binkert
关键词: Time-resolved spectroscopy 、 Chemistry 、 Dumbbell model 、 Analytical chemistry 、 Fluorescence depolarization 、 Polarization (waves) 、 Depolarization 、 Polymer 、 Polyethylene 、 Anisotropy 、 Molecular physics
摘要: 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 measurements revealed considerable flexibility polymer chain. To interpret observed dependence relaxation time polarization anisotropy on molecular weight polymer, a simple freely-hinged dumbbell model developed. properties were investigated computer experiments. found account well for measured data.
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