Synthesis and Mechanochromic Properties of Salicylaldimine Gelators

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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).

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	Articles by authors
	Yang Jun
	Feng Rongxiu
	Guan Xidong
	Liu Rui
	Wu Hao
	Song Jian

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

Received 2016-01-19;

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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,V34(5): 43-48

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