Amplification of weak chiral inductions for excellent control over the helical orientation of discrete topologically chiral (M₃L₂)_npolyhedra

Abstract

Superb control over the helical chirality of discrete (M3L2)n polyhedra (n = 2,4,8, M = CuI or AgI) created from the self-assembly of propeller-shaped ligands (L) equipped with chiral side...

A 5.3 nm giant metal–organic cage and its supramolecular gel for the formation of dye molecular ionic pairs

“…With chemists' unremitting efforts, a wide variety of cage-like supramolecules have been constructed by coordination interaction. [15][16][17][18][19][20][21][22] Among these coordination-driven supramolecular cages, those constructed from pyridyl ligands with metal ions were the most common, including polyhedral [M n L 2n ] from the Fujita group, 15 cages assembled from pyridine ligands and end-capped with Pt or Pd from Stang and coworkers, 17,20,23 polyhedra formed from pyridyl-imine based ligands with metal ions from the Nitschke group, 21,24,25 lanthanide coordination cages using pyridinecarboxamide-containing tridentate ligands by Sun et al 18,26 and so on. 27 In addition, the oxygen atom-containing ligands were also ideal building blocks to coordinate and construct cage-like supramolecules.…”

Mechanically Interlocked Aerogels with Densely Rotaxanated Backbones

“…Unlike their covalent and/or noncovalent counterparts, synthetic mechanically interlocked molecules (MIMs) are composed of two or more entangled molecular elements in space via mechanical bonds that are unable to be separated without breaking the involved covalent bonds . There are high degrees of conformational freedom in MIMs derived from intramolecular motions of the interlocked components (i.e., elongation, rotation, sliding, and twisting) while preserving structural integrity, thereby playing a crucial part in developing artificial molecular machines . Furthermore, the individual intramolecular motion of a single MIM could be amplified to a macroscopic scale by a polymerization approach, as exemplified by robust mechanically interlocked polymers and adaptive metal–organic rotaxane or catenane frameworks .…”

A Double-Walled Tetrahedron with AgI4 Vertices Binds Different Guests in Distinct Sites

“…The potential utility of Ag I as a structural metal ion in such complex cages is highlighted by the work of Fujita and co-workers, who have reported an elegant series of topologically entangled cages bound with silver(I). [34][35][36][37] The flexible coordination environment of Ag I has also been used to synthesize a range of Ag Idipyridylpeptide coordination complexes, achieving even greater topological complexity. [38][39][40][41][42] Self-assembled metal-organic structures that incorporate polymetallic clusters as vertices, 43,44 as opposed to single metal ions, are beginning to be developed.…”