Ethylenediamine Modified Graphene and Its Chemically Responsive Supramolecular Hydrogels

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• 作者：Shanshan Wang ; Jun Wang ; Wenfeng Zhang ; Junyi Ji ; Yang Li ; Guoliang Zhang ; Fengbao Zhang ; Xiaobin Fan
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：August 20, 2014
• 年：2014
• 卷：53
• 期：33
• 页码：13205-13209
• 全文大小：337K
• ISSN：1520-5045

文摘

In this study, reduced graphene oxide was functionalized with ethylenediamine (EDA) by a simple one-pot process, using a lithium ethylenediamine derivative as a nucleophilic reagent at 50 掳C for 10 h. The presence of EDA chains in graphene was identified by Fourier transform infrared spectroscopy (FTIR), electronic energy loss spectroscopy (EELS), X-ray photoelectron spectroscopy (XPS), and zeta potential. By using the simple amidation reaction of EDA modified graphene and subsequent host鈥揼uest interactions between 尾-cyclodextrins (尾-CDs) and polymers carrying guest moieties, we also synthesized a new type of graphene-based 尾-CD supramolecular hydrogels. The obtained hydrogels exhibited the gel-to-sol transition by adding a competitive guest sodium adamantine carboxylate (AdCNa) or competitive host 伪-CD.