Kazuya Koumoto et al 2001 Nanotechnology 12 25 doi:10.1088/0957-4484/12/1/306
Kazuya Koumoto, Tadahiro Yamashita, Taro Kimura, Roman Luboradzki1 and Seiji Shinkai
Show affiliationsTwo bola-amphiphilic α,ω-diboronic acids separated by a (CH2)11 or (CH2)12 group were synthesized. Complexation with chiral diols readily gave new amphiphiles end-capped with the chiral substituents. Some of these acted as good gelators of organic solvents. Transmission electron microscope and scanning electron microscope observations established that a variety of super-structures are created in the organogels, depending on the solvents and the structure of the chiral end-cap groups. In most cases, the fibrous aggregates, the network structure which is the driving-force for gelation, showed a helical higher-order structure reflecting the chirality of the end-cap groups. The results indicate that the combinatorial approach utilizing boronic acid functions and diol compounds is useful in creating a variety of new super-structures in the gel phase.
68.37.Hk Scanning electron microscopy (SEM) (including EBIC)
Issue 1 (March 2001)
Received 28 October 2000
Kazuya Koumoto et al 2001 Nanotechnology 12 25
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