title: Formation of a Dicopper Platform Based Polyrotaxane Whose "String" and "Bead" Are Constructed from the Same Components.
abstract: The combination of the dicopper platform [Cu2(L)2(THF)2] (1·2THF), where H2L is 1,1'-(1,3-phenylene)-bis-4,4-dimethylpentane-1,3-dione, and 1,4-bis(4-pyridyl)piperazine (bpp), afforded the first example of a one-dimensional polyrotaxane {[(1)(μ2-bpp)][(1)2(bpp)2]}n whose "string" and "bead" are constructed from the same components. The bead of stoichiometry [(1)2(bpp)2] has a large rectangular cavity of dimensions 7.40 × 15.64 Å and is threaded onto a stair-like string of composition [(1)(μ2-bpp)]n. The formation of the polyrotaxane is driven by π-π stacking between the string and the beads with precise electronic and steric complementarity between these components. A pathway for the formation of the polyrotaxane is proposed.
authors.affiliation: †Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Jinju 660-701, S. Korea.
authors.forename: Huiyeong
authors.initials: H
authors.lastname: Ju
authors.affiliation: ‡School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia.
authors.forename: Jack K
authors.initials: JK
authors.lastname: Clegg
authors.affiliation: †Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Jinju 660-701, S. Korea.
authors.forename: Ki-Min
authors.initials: KM
authors.lastname: Park
authors.affiliation: †Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Jinju 660-701, S. Korea.|§School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.
authors.forename: Leonard F
authors.initials: LF
authors.lastname: Lindoy
authors.affiliation: †Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Jinju 660-701, S. Korea.
authors.forename: Shim Sung
authors.initials: SS
authors.lastname: Lee