Collective weakness makes strength: A case of multiple π-π stacking interactions stabilizing a porous supramolecular framework.

Dual-atom catalysts (DACs) have emerged as efficient electrocatalysts for CO2 reduction owing to the synergistic effect between binary metal sites. However, rationally modulating electronic structure of DACs optimize catalytic performance remains a great challenge. Herein, we report modulation three Ni2 (namely, -N7 , -N5 C2 and -N3 C4 ) by regulation coordination environments around dual-atom centres. As result, exhibits significantly improved electrocatalytic activity reduction, not only...

Abstract Hydrogen‐bonded organic frameworks (HOFs) are outstanding candidates for photocatalytic hydrogen evolution. However, most of reported HOFs suffer from poor stability and activity in the absence Pt cocatalyst. Herein, a series metal (Co 2 ‐HOF‐X, X=COOMe, Br, tBu OMe) have been rationally constructed based on dinuclear cobalt complexes, which exhibit exceptional presence strong acid (12 M HCl) base (5 NaOH) at least 10 days. More impressively, by varying ‐X groups microenvironment Co...

Covalent organic frameworks (COFs) have been widely studied in photocatalytic CO

Significance The photosensitizer is one of the important components in photocatalytic system. Molecular photosensitizers have well-defined structures, which beneficial revealing catalysis mechanism and helpful for further structural design performance optimization. However, separation recycling molecular a great problem. Loading them into/on two/three-dimensional supports through covalent bonds, electrostatic interactions, supramolecular interactions method that enhances their capability....

Porous supramolecular crystalline materials (PSCMs), usually including hydrogen‐bonded organic frameworks (HOFs), π frameworks, and so on, can be defined as a type of porous assemblies stabilized by hydrogen‐bonding, π‐π stacking other non‐covalent interactions. Given the unique features mild synthetic conditions, well‐defined tailorable structures, easy healing regeneration, PSCMs have captured widespread interest in molecular recognition, sensor, gas storage separation, on. Moreover, they...

The development of efficient photocatalysts to convert low‐concentration CO2 into the value‐added chemicals and fuels is particularly interesting yet remains highly challenging. Herein, we designed synthesized three metal‐covalent organic frameworks (MCOFs) through Schiff‐base condensation reactions between trinuclear copper complex different BDP‐based chromophores (BDP = 4,4‐difluoro‐4‐bora‐3a,4a‐diaza‐s‐indacene) for visible‐light‐driven reduction (15%) HCOO‐. As a result, MCOF‐ANT...

The development of efficient photocatalysts to convert low‐concentration CO2 into the value‐added chemicals and fuels is particularly interesting yet remains highly challenging. Herein, we designed synthesized three metal‐covalent organic frameworks (MCOFs) through Schiff‐base condensation reactions between trinuclear copper complex different BDP‐based chromophores (BDP = 4,4‐difluoro‐4‐bora‐3a,4a‐diaza‐s‐indacene) for visible‐light‐driven reduction (15%) HCOO‐. As a result, MCOF‐ANT...

Photocatalysis provides a promising approach to produce green energy, by which the intermittent solar energy can be converted into storable chemical energy. Well‐known that electron transfer rate has great influence on photocatalytic efficiency. Revealing of efficiency from molecular level is significance but challenge. Herein, we give solid evidence show π–π stacking serve as an channel boost photocatalysis. Specifically, two hydrogen‐bonded organic frameworks (HOFs) with similar structures...

Photocatalysis provides a promising approach to produce green energy, by which the intermittent solar energy can be converted into storable chemical energy. Well‐known that electron transfer rate has great influence on photocatalytic efficiency. Revealing of efficiency from molecular level is significance but challenge. Herein, we give solid evidence show π–π stacking serve as an channel boost photocatalysis. Specifically, two hydrogen‐bonded organic frameworks (HOFs) with similar structures...

The exploitation of highly stable and active catalysts for the conversion CO2 into valuable fuels is desirable but a great challenge. Herein, we report that incorporation chromophores metal–organic frameworks (MOFs) could afford robust efficient conversion. Specifically, porous Nd(III) MOF (Nd-TTCA; TTCA3– = triphenylene-2,6,10-tricarboxylate) was constructed by incorporating one-dimensional Nd(CO2)n chains ligands, which exhibits very high stability, retaining its framework not only in air...

Abstract Undoped Cu nanoparticles (NPs) generally show poor selectivity and activity for electroreduction of CO 2 to formate due hard desorption HCOO* intermediate on site. Here we report a Cu/pyrenyl-graphdiyne (Pyr-GDY) composite catalyst, in which O CuO NPs were in-situ formed embedded the matrix two-dimensional (2D) Pyr-GDY, during synthesis 2D Pyr-GDY using monolayer graphene covered foil as template, copper acetate coupling catalyst. Cu/Pyr-GDY can be electrochemically reduced cubic...

The development of low-cost and efficient photocatalysts to achieve water splitting hydrogen (H

The development of hierarchically porous metal-organic frameworks (MOFs) with high stability is desirable to expand their applications but remains challenging. Herein, an anionic sodalite-type microporous MOF (Yb-TTCA; TTCA3- = triphenylene-2,6,10-tricarboxylate) was synthesized, which shows outstanding catalytic activities for the cycloaddition CO2 into cyclic carbonates. Moreover, Yb-TTCA can be transformed a hierarchical micro- and mesoporous by water treatment mesopore sizes 2 12 nm....

Two new copper complexes, [Cu2(BDOA)(4,4′-bpy)2] ⋅ 2H2O (1) and [Cu(BDOA)(phen)] (2) (H2BDOA = benzene-1,4-dioxydiacetic acid; 4,4′-bpy 4,4′-bipyridine; phen 1,10-phenanthroline), were synthesized characterized by IR, elemental analysis, single-crystal X-ray diffraction. Complex 1 exhibits a 2-D three-connected network structure with 63 topology. 2 displays 1-D chain structure. Furthermore, the 3-D supramolecular networks of are constructed via rich hydrogen bonds. Thermal stability is...

Abstract Dual‐atom catalysts (DACs) have emerged as efficient electrocatalysts for CO 2 reduction owing to the synergistic effect between binary metal sites. However, rationally modulating electronic structure of DACs optimize catalytic performance remains a great challenge. Herein, we report modulation three Ni (namely, −N 7 , 5 C and 3 4 ) by regulation coordination environments around dual‐atom centres. As result, exhibits significantly improved electrocatalytic activity reduction, not...