Introducing Defects into Metal-Seamed Nanocapsules Using Mixed Macrocycles

Abstract

The synthesis and single-crystal X-ray diffraction structure of a dimeric zinc-seamed nanocapsule using a mixed pyrogallol/resorcinol[4]arene are presented. The use of "mixed" macrocycles results in an incomplete seam of coordination bonds around the nanocapsule's typically octa-metalated belt. The self-assembly of the nanocapsule occurs such that the single resorcinol moiety of each macrocycle aligns transversely. This yields a hepta-metalated capsule where the defect occurs in such a way as to provide minimal disruption to the overall structure of the nanocapsule.

Trinuclear Cage‐Like ZnII Macrocyclic Complexes: Enantiomeric Recognition and Gas Adsorption Properties

“…[8] In that respect, [Zn 3 1 2 ]r esembles larger metal-seamed nanocapsules based on two pyrogallol [4]arenes connected by Zn II ions. [12] Both complexes belong to ac lass of hollow moleculesc onstructed from metal ions and organic fragments, referred to as metal-organic containers, metallo-supramolecular capsules, or metallocavitands, [12,13] which are inorganic analogues of organic containers. [14] These compounds are attracting increasing attention as hosts for various guest molecules.…”

Site-Specific Metal Chelation Facilitates the Unveiling of Hidden Coordination Sites in an FeII/FeIII-Seamed Pyrogallol[4]arene Nanocapsule

“…Having upper-rim phenolic groups and an associated bowl conformation, coordination to appropriate metal ions can, under appropriate conditions, drive PgCns to form a diverse range of metal-PgCn assembly types. 10,[25][26][27][28][29][30][31][32] We are specifically interested in MONCs that typically exist in two general forms, termed hexamers ( Figure 1a) and dimers hereafter. 10,[25][26][27][28][29][30][31] These hexamers and dimers are nanoscale capsules containing either 6 or 2 PgCn units, and are formed through coordination to 24 or 8 divalent metal ions, respectively.…”

Stepwise Self‐Assembly and Dynamic Exchange of Supramolecular Nanocages Based on Terpridine Building Blocks

“…Synthetic supramolecular chemistry focused on the construction of specific and functionalized supramolecular architectures through self‐assembly during the past few decades. Coordination‐driven self‐assembly is one of the most useful methods for preparing multifarious supramolecular structures, such as 1D helicates, 2D macrocycles, knots, links, 3D cages, and capsules . 3D supramolecules with well‐defined cavities are attractive due to their ability of encapsulating guest molecules.…”