title: Self-assembly of [3]catenanes and a [4]molecular necklace based on a cryptand/paraquat recognition motif.
abstract: Hierarchical self-assembly centered on metallacyclic scaffolds greatly facilitates the construction of mechanically interlocked structures. The formation of two [3]catenanes and one [4]molecular necklace is presented by utilizing the orthogonality of coordination-driven self-assembly and crown ether-based cryptand/paraquat derivative complexation. The threaded [3]catenanes and [4]molecular necklace were fabricated by using ten and nine total molecular components, respectively, from four and three unique species in solution, respectively. In all cases single supramolecular ensembles were obtained, attesting to the high degree of structural complexity made possible via self-assembly approaches.
authors.affiliation: †College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, P. R. China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Ye
authors.affiliation: †College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, P. R. China.
authors.forename: Shu-Ping
authors.initials: SP
authors.lastname: Wang
authors.affiliation: †College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, P. R. China.
authors.forename: Bin
authors.initials: B
authors.lastname: Zhu
authors.affiliation: §Department of Chemistry, University at Buffalo, The State University of New York, 856 Natural Sciences Complex, Buffalo, New York 14260, United States.
authors.forename: Timothy R
authors.initials: TR
authors.lastname: Cook
authors.affiliation: †College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, P. R. China.
authors.forename: Jing
authors.initials: J
authors.lastname: Wu
authors.affiliation: †College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, P. R. China.
authors.forename: Shijun
authors.initials: S
authors.lastname: Li
authors.affiliation: ‡Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States.
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Stang
mesh_terms: D043863:Catenanes / Q000737:chemistry*; D043844:Crown Ethers / Q000737:chemistry*; D004988:Ethers, Cyclic / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D010269:Paraquat / Q000737:chemistry*; D043862:Rotaxanes / Q000737:chemistry*; D012545:Schiff Bases / Q000737:chemistry*
chemical_list: D043863:Catenanes; D043844:Crown Ethers; D004988:Ethers, Cyclic; D043862:Rotaxanes; D012545:Schiff Bases; C444241:cryptand; D010269:Paraquat