Self-Assembly of Gels through Molecular Recognition of Cyclodextrins: Shape Selectivity for Linear and Cyclic Guest Molecules

被引:64
|
作者
Yamaguchi, Hiroyasu [1 ]
Kobayashi, Ryosuke [1 ]
Takashima, Yoshinori [1 ]
Hashidzume, Akihito [1 ]
Harada, Akira [1 ,2 ]
机构
[1] Osaka Univ, Grad Sch Sci, Dept Macromol Sci, Osaka 5600043, Japan
[2] Japan Sci & Technol Agcy JST, Core Res Evolut Sci & Technol CREST, Chiyoda Ku, Tokyo 1020075, Japan
基金
日本科学技术振兴机构;
关键词
SUPRAMOLECULAR CHEMISTRY; COMPLEX MATTER; ORGANIZATION; MULTIVALENCY; HYDROGELS; POLYMERS; ROTAXANE; WATER;
D O I
10.1021/ma200398y
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The molecular recognition of cyclodextrin (CD) for linear and cyclic guest moieties attached to the gels, which led to the specific assembly of gels were investigated. The α-CD-gel bound a gel containing linear alkyl groups to give an association, although β-CD-gel did not bind a cyclic alkyl-gel at all. The mechanical strength of the assembled gel could be regulated by the mole content of guest moiety in the guest gels. The water-soluble guest polymers bearing guest moieties were prepared by copolymerization of acrylamide and alkyl acrylate or alkyl-acrylamide by a radical polymerization using 2,2'-azobis(isobutyronitrile) (AIBN) in dimethyl sulfoxide (DMSO) at 60°C. The mechanical properties of gel-assemblies were measured by the mechanical tension testing system. The interaction between β-CD-gel and cyclohexyl(ester)-gel was found to be controllable by the addition of a soluble competitive host (β-CD) or guest.
引用
收藏
页码:2395 / 2399
页数:5
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