Atsushi Kumano
Kyushu University
11 Papers
145 Citations
Atsushi Kumano is an academic researcher from Kyushu University. The author has contributed to research in topics: Lyotropic & Thermotropic crystal. The author has an hindex of 7, co-authored 11 publications.
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Papers
Photoinduced ion permeation through ternary composite membrane composed of polymer/liquid crystal/azobenzene-bridged crown ether.
TL;DR: Azobenzene-bridged crown ether in the ternary composite membrane exhibits trans–cis photoisomerization by irradiation of ultraviolet and visible lights and the cation permeation is remarkably influenced by the magnitude of solubility of counter-anion to the composite membrane.
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Crystal-liquid crystal phase transformation and water permeability of artificial amphiphiles as biomembrane model
TL;DR: The diffusive permeability of the polymer/artificial amphiphiles composite membrane to water exhibits a distinct jump in the vicinity of the crystal-mesomorphic phase transition temperature.
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Photoresponsive permeation characteristics of a ternary composite membrane of polymer/artificial lipid/azobenzene derivative.
TL;DR: 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) as discussed by the authors.
Phase Transition Behavior and Permeation Properties of Cationic and Anionic Artificial Lipids with Two Alkyl Chains
Atsushi Kumano,Tisato Kajiyama,Motowo Takayanagi,Toyoki Kunitake,Yoshio Okahata +4 more
- 01 Dec 1984
TL;DR: In this article, the phase transition temperature from gel to liquid crystalline lamellae decreased steadily to a limiting temperature with an increase in water concentration up to the lipid fraction of 0.80 − 0.85.
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Single crystals of totally synthetic amphiphiles, dialkyldimethylammonium bromides
Kenji Okuyama,Yoshie Soboi,Kiyoshi Hirabayashi,Akira Harada,Atsushi Kumano,Tisato Kaziyama,Motowo Takayanagi,Toyoki Kunitake +7 more
TL;DR: In this article, it was shown by optical microscopy and X-Ray diffraction method that dimethylammonium bromides having two long alkyl chains (n=16, 18) form single crystals.
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