Nonionic Cyclodextrin Based Binary System with Upper and Lower Critical Solution Temperature Transitions via Supramolecular Inclusion Interaction
作者：Zhen Yang, Xiaodong Fan,*Wei Tian,*Dan Wang, Haitao Zhang, and Yang Bai
關(guān)鍵字：nonionic, thermoresponsive
論文來源：期刊
具體來源：Langmuir, 2014, 30 (25), pp 7319–7326
發(fā)表時間：2014年
A nonionic binary aqueous interaction system consisting ofβ-cyclodextrin trimer (β-CD
3) and naphthaleneterminated poly(ethylene glycol) (PEG-NP2), which has tunable upper critical solution temperature (UCST) behavior around room temperature and lower critical solution temperature (LCST) behavior at high temperature, was investigated. In the UCST transition, gel-like aggregates form because of supramolecular inclusion complexation between β-CD3 and PEG-NP2. During LCST transition, PEG-NP2 becomes insoluble in water, which results in its precipitation. The effects of concentration, stoichiometry of the two components, and electrolyte on UCST behavior are discussed. This study
provides a new nonionic thermoresponsive material.
全文鏈接：http://pubs.acs.org/doi/abs/10.1021/la501278n