Abstract
Formations of monolayer or bilayer membranes by an amphiphilic functional molecule as a single component are discussed. From mid-90s, functional molecules such as polypeptides, resorcinarenes, cyclodextrins, porphyrins, and block copolymers having amphiphilic groups were studied in order to construct monolayer or bilayer membranes. Polyethylene glycol (PEG) attached hydrophobic rods reduce the interaction between the rods and assist in aggregation in high ordered and stable structure on the air-water interface above specific surface pressure. Vesicle made of bisimidazolylporphyrin having two carboalkoxyphenyl-substitutents may stabilize by hydrogen bond networks by imidazolyl substituents and π-π interactions of porphyrins assembled in the central belt part of the membrane.
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