title: Self-assembly and host-guest chemistry of a 3.5-nm coordination nanotube.
abstract: Upon complexation with Pd(II) ions, precisely designed strandlike ligands with two tris(3,5-pyridine) units at both terminals were assembled, with the aid of a linear template molecule, into a discrete tubular complex with a length of 3.5 nm. The high stability and the well-defined structure of the coordination nanotube were revealed by NMR spectroscopy, cold-spray ionization MS, and single-crystal X-ray analysis. Guest lengths were discriminated by the tube: When the association of strandlike guest molecules, in which two biphenylene units are linked with an (OCH2CH2)n linker, were compared, the tube selectively recognized an appropriate guest whose length was comparable to that of the tube. Tetrathiafulvalene (TTF)-terminated linear guests were directly oxidized to TTF2+ in the tube, but reduced stepwise via TTF+ outside the tube.
authors: Department of Applied Chemistry, School of Engineering, The University of Tokyo, Japan.
authors: Takumi
authors: T
authors: Yamaguchi
authors: Shohei
authors: S
authors: Tashiro
authors: Masahide
authors: M
authors: Tominaga
authors: Masaki
authors: M
authors: Kawano
authors: Tomoji
authors: T
authors: Ozeki
authors: Makoto
authors: M
authors: Fujita
mesh_terms: D000478:Alkylation; D001713:Biphenyl Compounds / Q000737:chemistry*; D018360:Crystallography, X-Ray / Q000379:methods; D019281:Dimerization; D004146:Dioxanes / Q000737:chemistry; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008958:Models, Molecular; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D009930:Organic Chemicals / Q000138:chemical synthesis*; D010165:Palladium; D011725:Pyridines / Q000737:chemistry*
chemical_list: D001713:Biphenyl Compounds; D004146:Dioxanes; D008024:Ligands; D009930:Organic Chemicals; D011725:Pyridines; D010165:Palladium; C025223:1,4-dioxane; C023666:pyridine; C027439:4,4'-dihydroxybiphenyl