Self‐Assembly and Host–Guest Chemistry of a 3.5‐nm Coordination Nanotube |
| |
| Authors: | Takumi Yamaguchi Shohei Tashiro Dr Masahide Tominaga Dr Masaki Kawano Dr Tomoji Ozeki Dr Makoto Fujita Prof Dr |
| |
| Institution: | 1. Department of Applied Chemistry, School of Engineering, The University of Tokyo;2. CREST, Japan Science and Technology Agency, 7‐3‐1 Hongo, Bunkyo‐ku, Tokyo 113‐8656, Japan, Fax: (+81)?3‐5841‐7257;3. Present address: Department of Chemistry, School of Science, The University of Tokyo, 7‐3‐1 Hongo, Bunkyo‐ku, Tokyo 113‐8656, Japan;4. Present address: Department of Pharmaceutical Technology, Faculty of Pharmaceutical Science at Kagawa Campus, Tokushima Bunri University, 1314‐1 Shido, Sanuki, Kagawa 769‐2193, Japan;5. Department of Chemistry and Materials Science, Tokyo Institute of Technology, 2‐12‐1 O‐okayama, Meguro‐ku, Tokyo 152‐8551, Japan |
| |
| Abstract: | Upon complexation with PdII 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. |
| |
| Keywords: | host– guest systems nanotubes palladium self‐assembly template synthesis |
|
|
