Size-Controlled Nanoassemblies Based on Cyclodextrin-Modified Dextrans

作者：Wintgens Veronique; Nielsen Thorbjorn Terndrup; Larsen Kim Lambertsen; Amiel Catherine^*

来源：Macromolecular Bioscience, 2011, 11(9): 1254-1263.

DOI：10.1002/mabi.201100097

• associative polymers
• cydodextrin polymers
• host/guest systems
• nanoassemblies
• supramolecular structures

Nanoassemblies formed by host/guest interactions between two polymers in aqueous media are studied. Two types of polymers with the same dextran backbone are modified with adamantyl or beta CD groups. The sizes of the spontaneously formed nanoassemblies depend on the beta CD:Ada ratio and on the total concentration and composition of the mixtures. The results can be rationalized by assuming a core/shell structure of the nanoassemblies, the core resulting from associative phase separation of the two polymers and being stabilized by an external shell made of Ada-grafted dextran and containing ions adsorbed from the solution. Hydrophobic compounds such as benzophenone can be incorporated efficiently without inducing changes in properties of the nanoassemblies.

• 出版日期2011-9-9