title: An artificial muscle model unit based on inorganic nanosheet sliding by photochemical reaction.
abstract: From the viewpoint of developing photoresponsive supramolecular systems in microenvironments to exhibit more sophisticated photo-functions even at the macroscopic level, inorganic/organic hybrid compounds based on clay or niobate nanosheets as the microenvironments were prepared, characterized, and examined for their photoreactions. We show here a novel type of artificial muscle model unit having much similarity with that in natural muscle fibrils. Upon photoirradiation, the organic/inorganic hybrid nanosheets reversibly slide horizontally on a giant scale, and the interlayer spaces in the layered hybrid structure shrink and expand vertically. In particular, our layered hybrid molecular system exhibits a macroscopic morphological change on a giant scale (~1500 nm) compared with the molecular size of ~1 nm, based on a reversible sliding mechanism.
authors.affiliation: Department of Applied Chemistry, Tokyo Metropolitan University, 1-1, Minami-ohsawa, Hachioji, Tokyo 192-0397, Japan. nabetani@tmu.ac.jp
authors.forename: Yu
authors.initials: Y
authors.lastname: Nabetani
authors.forename: Hazuki
authors.initials: H
authors.lastname: Takamura
authors.forename: Yuika
authors.initials: Y
authors.lastname: Hayasaka
authors.forename: Shin
authors.initials: S
authors.lastname: Sasamoto
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Tanamura
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Shimada
authors.forename: Dai
authors.initials: D
authors.lastname: Masui
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Takagi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Tachibana
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Tong
authors.forename: Haruo
authors.initials: H
authors.lastname: Inoue
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry; D001391:Azo Compounds / Q000737:chemistry; D002384:Catalysis; D000077215:Clay; D005459:Fluorides / Q000737:chemistry; D006801:Humans; D008903:Minerals / Q000737:chemistry; D008953:Models, Anatomic; D008954:Models, Biological; D009132:Muscles; D049329:Nanostructures / Q000737:chemistry*; D055668:Photochemical Processes; D058105:Polymerization / Q000528:radiation effects; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry; D013237:Stereoisomerism
chemical_list: D000538:Aluminum Silicates; D001391:Azo Compounds; D008903:Minerals; D011108:Polymers; C009850:azobenzene; D005459:Fluorides; D000077215:Clay