双子型缬氨酸二肽超分子凝胶的制备及其性能研究

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• 英文论文题名：Preparation and Characterization of Gemini-dipeptide Supramolecular Gel Based on Valine
• 论文作者：张肖阳 ; 肖婷婷 ; 杨勇
• 英文论文作者：Xiao-Yang Zhang ; Ting-Ting Xiao ; Yong Yang ; Key Laboratory for Soft Chemistry and Functional Materials of Ministry Education ; Nanjing University of Science and Technology
• 年：2016
• 作者机构：软化学与功能材料教育部重点实验室,南京理工大学;
• 论文关键词：超分子凝胶 ; 自组装 ; 缬氨酸 ; 相变
• 英文论文关键词：Supramolecular Gel ; self-assembly ; valine ; phase transition
• 会议召开时间：2016-07-01
• 会议录名称：中国化学会第30届学术年会摘要集-第二十四分会：超分子组装与软物质材料
• 语种：中文
• 分类号：O648.17
• 学会代码：ZGHY
• 会议名称：中国化学会第30届学术年会-第二十四分会 ; 超分子组装与软物质材料
• 会议地点：中国辽宁大连
• 主办单位：中国化学会
• 学会名称：中国化学会
• 页数：1
• 文件大小：176k
• 原文格式：D
• 会议级别：全国

摘要

通过十二亚甲基-1,12-双(N-L-缬氨酸)的制备及其与L-缬氨酸吡啶的缩合偶联,制备了基于缬氨酸的双子型二肽超分子凝胶因子。采用FT-IR和~1H NMR对凝胶因子的结构进行了表征,并通过SEM、TEM、XRD和流变仪等手段系统研究了凝胶因子在乙醇/水、二甲基亚砜/水、甲醇/水等混合溶剂中的自组装行为。同时,探索了乙酸锌、乙酸铜、乙酸镉、硝酸铁对凝胶性能及其自组装体系的影响,凝胶因子能够迅速在乙酸锌存在下形成凝胶(t<2s),乙酸铜存在下的凝胶体系能够在室温下发生凝胶-凝胶相转变。系统研究了金属离子触发的快速响应性,金属凝胶相转变的动力学特性、组装机理等。
Gemini valine derived supramolecular gelator based on 1,12-bis(N-(6-pyridiumhexanoyl)-L-valine)dibromide and N-(4-Pyridylmethyl)-L-valine was prepared via the condensation coupling process. The gelator was characterized by FT-IR and ~1H NMR for the confirmation of structure, and FE-SEM, TEM, XRD and rheological measurements were conducted for the investigation of the different self-assemblies of the gelator in mixed solvents including ethanol/water, DMSO/water and methanol/water. Moreover, the influences on these self-assemblies with the addition of zinc acetate, copper acetate, cadmium acetate and ferric nitrate were studied. The gel was constructed rapidly(t<2s)with the addition of zinc acetate, and the gel with the presence of copper acetate exhibited remarkable gel to gel phase transition at room temperature. The fast responses, dynamic properties and mechanisms for self-assembly of the gelator along with metallic ions were systematically discussed.

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