Photoresponsive permeation characteristics of a ternary composite membrane of polymer/artificial lipid/azobenzene derivative

Atsushi Kumano, Osamu Niwa, Tisato Kajiyama, Motowo Takayanagi, Toyoki Kunitake, Koji Kano

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

A ternary composite membrane composed of polymer/artificial lipid/azobenzene derivative was prepared by casting from a tetrahydrofuran solution of poly(vinyl chloride) (PVC), dioctadecyldimethylammonium bromide (DOAB) and p-ω-hydroxypropyloxy-p′-dodecyloxy azo-benzene (AZO). AZO dispersed almost molecularly within the multilayer liposome of artificial lipid (DOAB), and even in the ternary composite membrane, AZO exhibited trans-cis photoisomerization in a similar manner to that in solution. The water or ion permeations through the composite membrane apparently increased upon the irradiation of ultraviolet (UV) light when artificial lipids were in a liquid crystalline state. The water permeability coefficient, P depended on the trans-fraction of AZO. This suggests that the conformational change due to the trans-cis photoisomerization of AZO makes compact packing of artificial lipid molecules around AZO loosed, being followed by formation of permeation channel.

Original languageEnglish
Pages (from-to)461-470
Number of pages10
JournalPolymer Journal
Volume16
Issue number6
DOIs
Publication statusPublished - Jun 1984

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry

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