Advances in 2D coordination networks for single‐crystal‐to‐single‐crystal applications beyond confined pores

Abstract

Research issue on 2D coordination networks is moving toward practical applications. Recent developments in such 2D networks include exciting advances in efficient single-crystal-to-single-crystal (SCSC) functionality. This account highlights advances in various 2D coordination networks as SCSC porous platforms for dye inclusion as an energy transfer system, template for x-ray crystal structure determination of various liquids, polymorphism materials, efficient heterogeneous catalysts, separation of o-, m-, and m-xylene, sensing via interlayer-tuning, recognition and reservoir of unstable diiodomethane, chiral recognition in SCSC mode.The key point of their utility is not only the construction of recyclable tolerant 2D networks but also channel-tuning for inclusion of targeting guest molecules. The targeting guest molecules, which are appropriate with the polarity, shape, and size of 2D pores, can, instead of simple organic solvates, be incorporated into the porous crystals in SCSC mode, thus giving rise to recyclable tolerant host-guest systems in the crystalline state.

Hierarchical packing of racemic metallosupramolecular cages with Ni(II)-based triple-stranded helicate building blocks

“…Discrete metallosupramolecular cages (metallocages) with well defined cavities have been extensively studied over the past decades owing to their structural aesthetics (Yoshizawa et al, 2009;McConnell, 2022;Yong et al, 2022;Kim et al, 2022) and intriguing applications in host-guest chemistry (Browne et al, 2013;Jia et al, 2020;Rizzuto et al, 2019;Huang et al, 2022), modification of the chemical reactivity of guests (Fang et al, 2019;Whitehead et al, 2013) [activating guests for reactions (Hastings et al, 2010) or stabilizing reactive guests (Mal et al, 2009;Galan & Ballester, 2016)], or gas storage (Duriska et al, 2009). Most of these cages are built directly from MBBs, with a low degree of hierarchy and complexity (Pullen et al, 2021;Lee et al, 2023).…”

Water-reservoir properties dependent on packing modes of [Ni(ii)3L6] cages

“…Research on coordination-molecular systems with guestaccessible spaces has been one of the hot topics ever since well-ordered confined spaces were first employed as substantial molecular materials for the adsorption of target molecules via predictable interactions between them and large substrates. [1][2][3][4][5][6] Both the size and the functional site of spaces are, needless to say, key factors for the selective encapsulation of specific target molecules. [7][8][9][10][11] Such confined spaces with desirable functional environments have been applied as key platforms for reversible adsorption/desorption processes in various fields including purification, separation, recognition, decontamination, guest binding, intra-porous dynamics, delivery, storage, transport, extraction, catalysis, and proton conductivity.…”

Two‐dimensional Zn(II) coordination polymer and hydrogen bond‐mediated two‐dimensional Cu(II) network based on trans‐2‐aminocyclopentanecarboxylate

“…Coordination polymers (CPs), built from the coordination of metal cations and multivalent organic ligands, have been of considerable interest in synthetic chemistry and material science for several decades. [1][2][3][4] Combinations of different metal ions and organic linkers have resulted in a variety of CPs displaying diverse topologies, including one-, two-and three-dimensional networks [5][6][7] and intriguing functions such as single-crystal-to-single-crystal transformation, 8 conductive, 9,10 luminescent, [11][12][13] and catalytic properties. 14 Among the vast subclasses of CPs, porous CPs (or metal-organic frameworks) would be the most well-known and fascinating inorganic-organic hybrids for the use of gas separation, 15 sensing, 16 and catalyst, 17 owing to their voids of tunable sizes and chemical properties.…”