Manipulation the properties of supramolecular hydrogels of α-cyclodextrin/Tyloxapol/carbon-based nanomaterials

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• 作者：Jinglin Shen^a ; Xia Xin^a ; ^b ; ^{xinx@sdu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Teng Liu^c ; Lu Tong^a ; Guiying Xu^a ; Shiling Yuan^a ; ^{shilingyuan@sdu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Supermolecular hydrogels ; α-cyclodeatrin ; Carbon materials ; Dispersion ; Fluorescence quenching
• 刊名：Journal of Colloid and Interface Science
• 出版年：2016
• 出版时间：15 April 2016
• 年：2016
• 卷：468
• 期：Complete
• 页码：78-85
• 全文大小：2247 K

文摘

Supermolecular hydrogels were prepared by α-cyclodeatrin (α-CD) and Tyloxapol, which can be considered as an oligomer of the nonionic surfactant polyoxyethylene tert-octylphenyl ether (TX-100) with a polymerization degree below 7. Two carbon materials, graphene oxide (GO) and graphene, were mixed into the α-CD/Tyloxapol hydrogel to adjust the physicochemical properties of hydrogel. In order to get stable graphene dispersion and then mix it with α-CD/Tyloxapol hydrogel, both TX-100 and Tyloxapol were used to disperse graphene for comparison. Interestingly, it can be found that TX-100 could disperse graphene better than Tyloxapol owing to smaller molecular size of TX-100 compared with Tyloxapol. Then, both the α-CD/Tyloxapol/GO and α-CD/Tyloxapol/graphene hydrogels were characterized by transmission electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared (FT-IR) spectroscopy, small angle X-ray scattering (SAXS), X-ray diffraction (XRD) and rheological measurements. The results revealed that the addition of carbon materials into α-CD/Tyloxapol hydrogel can change their microstructures and the rheological properties. Furthermore, it can be confirmed that a little amount of carbon materials could induce fluorescence quenching sharply which could be a promising candidate for optical sensor.