Abstract
In recent years the spectroscopic investigations of the probe molecules in heteroclusters have become widely applied method for studying the dynamic size effects in clusters.1 Herewith we consider the process of gelation of agueous gelatin solution, which can be analysed in terms of growing clusters of gelatin molecules connected by intermolecular hydrogen bonds2. The sol- gel transition is investigated by detection of the fluorescence yield of probe dye molecules conjugated to the gelatin coils. We prove experimentally and theoretically that the time evolution of the dye fluorescence spectrum reflects the kinetics of helix formation in this process.
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