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We have used measurements of the phosphorescence intensity decay of the triplet probe erythrosin B, dispersed in amorphous glucose, maltose, and maltotriose at probe:sugar mole ratios of ∼1:10 4 , to monitor the molecular mobility of the sugar matrix in the glass and melt around the glass-transition temperature (T g ). Intensity decays were well fit using a stretched-exponential decay...
The effect of glycerol on molecular mobility and hydrogen bonding in amorphous glucose matrix was studied. Phosphorescence from erythrosin B (Ery B) was used to characterize the temperature dependence of mobility in glucose/glycerol films over the temperature range from 100°C down to −10°C. Analysis of emission energy and excited state decay kinetics from Ery B provided information about thermally...
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