pH-Triggered assembling system using cooperative binding between cyclodextrin-conjugated poly(epsilon-lysine)s and anionic guest in aqueous media

Article Abstract:

The effects of alpha- and beta- cyclodextrin-conjugated poly(epsilon-lysine)s (CDPLs) on the fluorescence spectra of 6-(p-toluidino)-2-napthalenesulfonate (TNS) are investigated under various environmental conditions. The results obtained from the combination of the cooperative host-guest interactions and the ionic interaction between the negatively charged TNS moieties and the positive amino groups of poly(epsilon-lysine) are presented.

Ions, Fluorescence spectroscopy, Properties

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Novel differential refractometry study of the enzymatic degradation kinetics of poly(ethylene oxide)-b-poly([epsilon]-caprolactone) particles dispersed in water

Article Abstract:

A newly developed novel differential refractometer is used to study the enzymatic degradation of the poly(ethylene oxide)-b-poly([epsilon]-caprolactone) (PEO-b-PCL) diblock polymer, when its particles are completely dispersed in water. The analysis reveals that the degradation rate is directly proportional to the polymer or enzyme concentration, as the biodegradation follows the first-order kinetics for any given concentration.

Caprolactone, Biodegradation, Report

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Thermodynamic analysis of inclusion complexation between alpha-cyclodextrin-based molecular tube and poly(ethylene oxide)-block-poly(tetrahydrofuran)-block-poly(ethyleneoxide) triblock copolymer

Article Abstract:

Thermodynamic analysis for inclusion complexation between molecular tube (MT) and poly(ethylene oxide)-block-poly(tetrahydrofuran)-block-poly(ethyleneoxide) triblock copolymer was carried out in terms of isothermal titration calorimetry (ITC). The thermodynamic parameters suggest that van der Waals interaction, hydrophobic interaction, and hydrogen bond interaction participate in inclusion complexation.

Tetrahydrofuran, Analysis, Thermodynamics

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