Over one century after discovery: pyrylium salt chemistry emerging as a powerful approach for the construction of complex macrocycles and metallo-supramolecules

Abstract

Over one century, pyrylium salts chemistry has been extensively applied in preparing light emitter, photocatalyst, and sensitizer. In most of these studies, pyrylium salts acted as versatile precursors for the...

Terpyridine‐Based 3D Discrete Metallosupramolecular Architectures

“…[29,[55][56][57][58][59][60][61][62][63][64][65][66][67][68][69] The syntheses, characterizations, properties, and applications of such constructs have been summarized in several reviews, which have provided profound insights into further syntheses and applications of the 2D metallosupramolecular family. [11,13,[29][30][31]70,71] Inspired by the aesthetic structures of various viral capsids and fascinating polyhedra in biological and mineral worlds, construction of 3D molecular mimics using the tpy-M(II)-tpy connectivity has also drawn significant attention. However, assembly of such 3D metallosupramolecular architectures remains a formidable synthetic challenge.…”

“…Despite the challenges, supramolecular chemists have endeavored to push the limit of coordination-driven selfassembly by advancing the ligand synthesis and selfassembly strategies, [30,47,61,62,66,[72][73][74] producing diverse 3D metallosupramolecular architectures, such as Platonic solids, Archimedean solids, prims as well as Johnson solids. Therefore, in this review, we would like to summarize the recent progress on tpy-based discrete 3D metallosupramolecular architectures constructed by different self-assembly strategies, with the focus on the control over the size and shape of 3D metallosupramolecules by tuning the geometry and angle of the multitopic tpy-based ligands.…”

“…Due to the directional, predictable and reversible nature of metalligand interactions, coordination-driven self-assembly has been intensely applied in the construction of a myriad of metallosupramolecules with well-defined structures and desired functions over the past few decades. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] A series of N-heteroaromatic ligands, such as pyridine, [15][16][17] 2,2ʹ-bipyridine, [9,[18][19][20] 1,10phenanthroline, [21][22][23][24] salen, [25,26] tetrazole, [27,28] and 2,2ʹ:6ʹ,2ʹʹterpyridine (tpy), [11,13,[29][30][31] have been widely employed to assemble metallo-supramolecules via coordination with metal ions.…”

Precise Synthesis of Concentric Ring, Helicoid, and Ladder Metallo-Polymers with Chevron-Shaped Monomers

“…In artificial systems, various bottom-up synthetic strategies have been developed for building up a myriad of synthetic macromolecules. To emulate the complexity and functionality of natural substances, increasing attention has been concentrated on precise synthesis of macrocycles, − helical polymers or foldamers, nanoribbons or ladder polymers, , and so forth., with a rigid backbone for facilitating the design and control of desired configurations. For example, many foldamers with aromatic skeletons are designed with monomers having a “V” convergent shape (Figure S1).…”

Adaptive coordination assemblies based on a flexible tetraazacyclododecane ligand for promoting carbon dioxide fixation

“…7,8 Inspired by this, many unusual metal complexes which can be used to fix CO 2 through binding with carbonate have been reported. 9–13 Coordination-directed self-assembly has been proven to be an effective approach toward the predictable construction of multicomponent artificial hosts, 14–77 where enhanced guest reactivity, 73,74,78–87 stabilization of metastable species, 88–90 and unusual reaction pathways 78,91–94 have been realized. While atmospheric CO 2 sequestration by selective binding of carbonate with coordination hosts has already been reported, 95–102 adaptive coordination hosts that contain multiple active metal sites and can reversibly encapsulate and release the carbonate are still rare.…”