Rendering Hyperbranched Polyglycerol Adjustably Thermoresponsive by Adamantyl Modification and Host/Guest Interaction
writer：Sun, X. Y.; Zhou, Y. F.*; Yan, D. Y.
keywords：β-cyclodextrin, host/guest systems, hyperbranched, polyglycerol, stimuli-sensitive polymers
source：期刊
specific source：Macromol. Chem. Phys. 2010, 211, 1940. http://onlinelibrary.wiley.com/doi/10.1002/macp.201000250/pdf
Issue time：2010年
A novel thermoresponsive polymer based on adamantyl-terminated
hyperbranched polyglycerol (HPG-AD) is reported. The hydroxy-terminated
hyperbranched polyglycerol (HPG) is functionalized by esterification of
HPG with 1-adamantanecarbonyl chloride. The resulting HPG-AD shows
interesting lower critical solution temperature (LCST) phase transitions
in aqueous solution, depending on polymer concentration and AD graft
ratio. In addition, the LCST transition can be controlled by adding
various amounts of β-cyclodextrin (β-CD) by a
host/guest interaction. The adjustable thermoresponsive behaviors are
studied by UV-vis spectroscopy and dynamic light scattering.