TEM and SEM observations of super-structures constructed in organogel systems from a combination of boronic-acid-appended bola-amphiphiles with chiral diols

Kazuya Koumoto, Tadahiro Yamashita, Taro Kimura, Roman Luboradzki, Seiji Shinkai

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Two 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.

Original languageEnglish
Pages (from-to)25-31
Number of pages7
JournalNanotechnology
Volume12
Issue number1
DOIs
Publication statusPublished - Mar 1 2001

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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