title: Multi-responsive supramolecular organogel with a crystalline-like structure.
abstract: A multi-responsive cyclodextrin-based organogel with a crystalline-like structure is first reported. An amount of β-cyclodextrin (β-CD) and lithium chloride (LiCl) was added into N,N-dimethylformamide (DMF), and the system obtained could transform instantly from a transparent solution into a gel state by introducing ethylene diamine (EDA), and then the gel could turn into another precipitate-like gel by undergoing a heating-cooling process. Among a series of aliphatic amines, only EDA was found to be able to induce the gel formation. Both the gels possess crystalline-like structures in their morphology with sheet-like layers, in a highly-ordered channel-type packing mode, which were proved by OM, SEM, XRD, and FT-IR measurements. Furthermore, the gel could respond to H(+) and Cu(2+) by transforming into an amorphous precipitate. This research may pave the way for the design of novel smart materials.
authors.affiliation: School of Chemistry and Chemical Engineering and Key Laboratory of Colloid and Interface Chemistry of Ministry of Education, Shandong University, Jinan 250100, PR China.
authors.forename: Pengyao
authors.initials: P
authors.lastname: Xing
authors.forename: Shangyang
authors.initials: S
authors.lastname: Li
authors.forename: Feifei
authors.initials: F
authors.lastname: Xin
authors.forename: Yuehui
authors.initials: Y
authors.lastname: Hou
authors.forename: Aiyou
authors.initials: A
authors.lastname: Hao
authors.forename: Tao
authors.initials: T
authors.lastname: Sun
authors.forename: Jie
authors.initials: J
authors.lastname: Su
mesh_terms: D000588:Amines / Q000737:chemistry; D005782:Gels / Q000737:chemistry*; D047392:beta-Cyclodextrins / Q000737:chemistry*
chemical_list: D000588:Amines; D005782:Gels; D047392:beta-Cyclodextrins