title: Synthesizing [2]Rotaxanes and [2]Catenanes through Na(+)-Templated Clipping of Macrocycles around Oligo(ethylene glycol) Units.
abstract: Di-, tri-, and tetra(ethylene glycol) units in both dumbbell-shaped and macrocyclic molecules can be used as primary recognition units for the clipping of macrocycles in the presence of templating Na(+) ions to form corresponding [2]rotaxanes and [2]catenanes. One such tri(ethylene glycol)-containing [2]catenane behaves as a Na(+) ion-controllable molecular switch.
authors.affiliation: †Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan 10617, R.O.C.
authors.forename: Yi-Wei
authors.initials: YW
authors.lastname: Wu
authors.affiliation: †Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan 10617, R.O.C.
authors.forename: Pei-Nung
authors.initials: PN
authors.lastname: Chen
authors.affiliation: †Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan 10617, R.O.C.
authors.forename: Chia-Fong
authors.initials: CF
authors.lastname: Chang
authors.affiliation: ‡Institute of Molecular Biology, National Chung Hsing University and Department of Medical Genetics, China Medical University Hospital, Taichung, Taiwan, R.O.C.
authors.forename: Chien-Chen
authors.initials: CC
authors.lastname: Lai
authors.affiliation: †Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan 10617, R.O.C.
authors.forename: Sheng-Hsien
authors.initials: SH
authors.lastname: Chiu
mesh_terms: D043863:Catenanes / Q000138:chemical synthesis* / Q000737:chemistry; D019855:Ethylene Glycol / Q000737:chemistry; D007477:Ions; D047028:Macrocyclic Compounds / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D043862:Rotaxanes / Q000138:chemical synthesis / Q000737:chemistry; D012964:Sodium / Q000737:chemistry*
chemical_list: D043863:Catenanes; D007477:Ions; D047028:Macrocyclic Compounds; D043862:Rotaxanes; D012964:Sodium; D019855:Ethylene Glycol