Coordination directed metal covalent organic frameworks

Abstract

Metal covalent organic frameworks (MCOFs) as a bridge between covalent organic frameworks (COFs) and metal organic frameworks (MOFs) have recently attracted much attention. Though the COFs with metal ions in...

Metallosalen covalent organic frameworks for heterogeneous catalysis

“…Third, similar with other categories of COFs, π-conjugated characteristics and a well-defined long-range structural order endow the separation of photoexcited electrons and holes, while also enhancing charge carrier mobility. [96] Previous work has demonstrated various M(salen) complexes process photocatalytic H 2 production activity. [97][98][99] The homogeneous cobalt-salen catalyst achieved a TON value of ~64 700 when combining CdS nanorods.…”

Engineering a molecular ruthenium catalyst into three-dimensional metal covalent organic frameworks for efficient water oxidation

“…In this regard, metal covalent organic frameworks (MCOFs) with a tailorable structure, permanent porosity and modular functionality are attractive candidates, which have recently emerged as a new class of crystalline functional materials for a variety of applications. [27][28][29] Conceivably, upon engineering molecular WOCs, such as Ru-based polypyridine complexes, as the building units for MCOFs, the active WOC modules can be integrated into crystalline frameworks for combining the following advantages (Scheme 1b): (i) structural controllability: the active modules can be predictably arranged into the architecture; (ii) increased stability: the catalytic units are stabilized in the covalent rigid skeleton, and prevent disadvantageous aggregation; (iii) abundant porosity: the interconnected channels contribute to the exposure of active sites as well as for better diffusion of substrates; (iv) effective recyclability: the heterogeneous nature allows for catalyst separation and recycling. To realize this appealing strategy, the functionality, stability, geometry and connectivity of the engineered building unit have to be considered together, which is still fraught with challenges and never been realized in MCOFs.…”

Three dimensional cyclic trinuclear units based metal–covalent organic frameworks for electrochemical CO2RR

“…7 metal–covalent-organic frameworks (MCOFs), which combine coordination chemistry and dynamic covalent chemistry, have generated interest in constructing novel porous materials. 8 In particular, it is important to incorporate functional building blocks into their frameworks; however, constructing functionalized frameworks often requires complex ligand synthesis. Cyclic trinuclear units (CTUs) have received much attention in developing functional coordination complexes due to their potential in various applications.…”