A temperature-responsive supramolecular hydrogel: preparation, gel-gel transition and molecular aggregation
文献类型：期刊论文
| 作者 | Wang, Lin1,2; Shi, Xuefeng1; Wang, Jinben1 |
| 刊名 | SOFT MATTER
 |
| 出版日期 | 2018-04-28 |
| 卷号 | 14期号:16页码:3090-3095 |
| ISSN号 | 1744-683X |
| DOI | 10.1039/c8sm00220g |
| 英文摘要 | In this study, a novel supramolecular hydrogel, abbreviated as AGC(16)/NTS, was designed and constructed by the molecular self-assembly of a cationic gemini surfactant, 1,3-bis(N,N-dimethyl-N-cetylammonium)-2-propylacrylatedibromide (AGC(16)), and an anionic aromatic gelator, trisodium 1,3,6-naphthalenetrisulfonate (NTS). The AGC(16)/NTS hydrogel was able to form in a mass ratio range of AGC(16) and NTS from 20:1 to 10:1. It was interestingly found that AGC(16)/NTS exhibited two phase transitions (gel-to-gel and gel-to-sol) observed by visual and rheological measurements during the heating process, which is rarely reported in the previous literature reports of hydrogels prepared using low molecular weight gelators. Cryogenic scanning electron microscopy (cryo-SEM), fluorescence emission spectroscopy and X-ray diffraction (XRD) were used to investigate the temperature-responsive properties and molecular self-assembly mechanism of the hydrogel AGC(16)/NTS. During the gel-to-gel transition process, the temperature-responsive changes in the visual appearance of AGC(16)/NTS (turbid to transparent) were clearly observed. Compared with the transparent gel, the turbid gel possesses higher mechanical strength and a much more compact network mophology due to stronger intermolecular hydrophobic association beetween gelators. The molecular self-assembly modes for the two different hydrogel states (turbid and transparent gel) were proposed, helping to further understand the hydrogel transition mechanisms at a molecular level. |
| 语种 | 英语 |
| WOS记录号 | WOS:000431005800014 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/43247]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Shi, Xuefeng; Wang, Jinben |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Colloid Interface & Chem Thermodynam, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Lin,Shi, Xuefeng,Wang, Jinben. A temperature-responsive supramolecular hydrogel: preparation, gel-gel transition and molecular aggregation[J]. SOFT MATTER,2018,14(16):3090-3095. |
| APA | Wang, Lin,Shi, Xuefeng,&Wang, Jinben.(2018).A temperature-responsive supramolecular hydrogel: preparation, gel-gel transition and molecular aggregation.SOFT MATTER,14(16),3090-3095. |
| MLA | Wang, Lin,et al."A temperature-responsive supramolecular hydrogel: preparation, gel-gel transition and molecular aggregation".SOFT MATTER 14.16(2018):3090-3095. |
入库方式： OAI收割
来源：化学研究所
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