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Nonionic Cyclodextrin Based Binary System with Upper and Lower Critical Solution Temperature Transitions via Supramolecular Inclusion Interaction
来源:范晓东教授个人网站 发布日期:2014-08-29
作者:Zhen Yang, Xiaodong Fan,*Wei Tian,*Dan Wang, Haitao Zhang, and Yang Bai
关键字:nonionic, thermoresponsive
论文来源:期刊
具体来源:Langmuir, 2014, 30 (25), pp 7319–7326
发表时间: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.

全文链接:http://pubs.acs.org/doi/abs/10.1021/la501278n

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