希夫碱凝胶因子的合成及压致变色性能研究

摘要

智能凝胶作为一种新型软材料对外界刺激具有独特的响应性，近年来受到人们的极大关注。以易于结构衍生化的2，4-（3，4-二氯苯亚甲基）-D-葡萄糖酸甲酯为平台分子，设计合成了新型智能希夫碱类凝胶因子化合物3a和3b。研究了凝胶因子在不同溶剂中的凝胶性能，并探索了机械力对于智能凝胶因子的影响。结果表明，凝胶因子的凝胶能力依赖于溶剂的种类和凝胶因子碳链的长度；通过原子力显微镜及场发射透射电镜可以观察到凝胶呈三维纤维网状结构。有趣的是，碳链较短的化合物3b具有压致变色性能，场发射扫描电镜和X-射线衍射表明压致变色是由于结晶态和无定型态聚集体结构的转变。

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	杨俊
	冯荣秀
	管西栋
	刘睿
	吴昊
	宋健

关键词：凝胶希夫碱自组装压致变色

Abstract：

As a new class of soft materials, smart gels have attracted much attention in recent years due to their unique stimuli responsive properties. Derived from a platform molecule 2,4-(3,4-dichloro)benzylidene methy-d-gluconate, two more compounds 3a and 3b were synthesized as novel Schiff-based gelators. The gelation behaviors of these compounds were studied in different solvents and the effects of mechanical force on these smart gelators were also investigated. It was shown that the gelation abilities of these compounds depended on the type of the solvents and the length of the alkyl chains of the gelators. The morphology of these gels were observed with atomic force microscope (AFM) and transmission electron microscope (TEM) and showed three-dimensional fibrous network structure. More importantly, compound 3b, with a shorter alky chain, exhibited unique mechanochromic behaviors. This interesting phenomenon may due to the transformation of compound 3b between crystalline state and amorphous state, as indicated by the results of scanning electron microscope (SEM) and X-ray diffraction (XRD).

Keywords： gels； Schiff base； self-assemble； mechanochromic

Received 2016-01-19;

Fund:

国家自然科学基金资助项目（21476164）。

Corresponding Authors: 宋健,E-mail:songjian@tju.edu.cn. Email: songjian@tju.edu.cn

About author: 杨俊(1990-),女,硕士研究生,现从事凝胶因子方面的研究.

引用本文:

杨俊, 冯荣秀, 管西栋, 刘睿, 吴昊, 宋健.希夫碱凝胶因子的合成及压致变色性能研究[J]. 化学工业与工程, 2017,34(5): 43-48

Yang Jun, Feng Rongxiu, Guan Xidong, Liu Rui, Wu Hao, Song Jian.Synthesis and Mechanochromic Properties of Salicylaldimine Gelators[J]. Chemcial Industry and Engineering, 2017,34(5): 43-48

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