title: A linear chain of water molecules accommodated in a macrocyclic nanotube channel.
abstract: A macrocyclic tetramer of 2-phenyl-1,3,4-oxadiazole was synthesized, and its self-assembly was investigated. The macrocycle was stacked to form a one-dimensional (1D) columnar structure containing water molecules. The nanotube self-assembled into a bundle, which grew into a molecular wire. The association of the water molecules in the tubular cavity resulted in shielding of the 1D chain of water molecules by the nanotube; these macrocyclic nanotube channels are promising candidates for nanotechnological applications.
authors.affiliation: Department of Materials Science and Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan. ono.katsuhiko@nitech.ac.jp
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Ono
authors.forename: Kenichi
authors.initials: K
authors.lastname: Tsukamoto
authors.forename: Ryohei
authors.initials: R
authors.lastname: Hosokawa
authors.forename: Masaki
authors.initials: M
authors.lastname: Kato
authors.forename: Motohiro
authors.initials: M
authors.lastname: Suganuma
authors.forename: Masaaki
authors.initials: M
authors.lastname: Tomura
authors.forename: Katsuya
authors.initials: K
authors.lastname: Sako
authors.forename: Keijiro
authors.initials: K
authors.lastname: Taga
authors.forename: Katsuhiro
authors.initials: K
authors.lastname: Saito
mesh_terms: D003460:Crystallization / Q000379:methods*; D047028:Macrocyclic Compounds / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D016062:Porosity; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
chemical_list: D047028:Macrocyclic Compounds; D046911:Macromolecular Substances; D014867:Water