title: Size effects in the alkali metal ion-templated formation of oligo(ethylene glycol)-containing [2]catenanes.
abstract: An investigation into the most suitable alkali metal ions for templating the assembly of [2]catenanes from di-, tri-, and tetra(ethylene glycol)-containing guest diamines and isophthalaldehyde has indicated that Na(+), K(+), and Rb(+) ions are optimal for preparing [2]catenanes containing at least one di(ethylene glycol) unit, two tri(ethylene glycol) units, and at least one tetra(ethylene glycol) unit [in the absence of a di(ethylene glycol) unit], respectively.
authors.affiliation: Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan 10617, ROC. shchiu@ntu.edu.tw.
authors.forename: Yong-Jay
authors.initials: YJ
authors.lastname: Lee
authors.forename: Tsung-Hsien
authors.initials: TH
authors.lastname: Ho
authors.forename: Chien-Chen
authors.initials: CC
authors.lastname: Lai
authors.forename: Sheng-Hsien
authors.initials: SH
authors.lastname: Chiu