A superior bifunctional luminescent sensor for Al³⁺ and UO₂²⁺ was built based on a Co(ii) MOF with exposed Lewis basic pyrimidyl sites.

Photocatalytic reduction of CO₂ is a promising approach to achieve solar-to-chemical energy conversion. However, traditional catalysts usually suffer from low efficiency, poor stability, and selectivity. Here we demonstrate that a large porous and stable metal-organic framework featuring dinuclear Eu(III)₂ clusters as connecting nodes and Ru(phen)₃-derived ligands as linkers is constructed to catalyze visible-light-driven CO₂ reduction. Photo-excitation of the metalloligands initiates electron injection into the nodes to generate dinuclear {Eu(II)}₂ active sites, which can selectively reduce CO₂ to formate in a two-electron process with a remarkable rate of 321.9 μmol h⁻¹ mmol_MOF⁻¹. The electron transfer from Ru metalloligands to Eu(III)₂ catalytic centers are studied via transient absorption and theoretical calculations, shedding light on the photocatalytic mechanism. This work highlights opportunities in photo-generation of highly active lanthanide clusters stabilized in MOFs, which not only enables efficient photocatalysis but also facilitates mechanistic investigation of photo-driven charge separation processes.

The electron transfer from TiO ₂ -V _O to Pd NPs plays a crucial role in promoting ORR performance of Pd-based electrocatalysts.

In the literature, organic materials with both aggregation-induced emission (AIE) and aggregation-caused quenching (ACQ) effects that can emit with multiple bands both in the solution and aggregated state are rarely reported. Herein we report a novel chiral dual-emissive bismacrocycle with tunable aggregation-induced emission colors. A facile four-step synthesis strategy is developed to construct this rigid bismacrocycle, (1,4)[8]cycloparaphenylenophane (SCPP[8]), which possesses a 1,2,4,5-tetraphenylbenzene core locked by two intersecting polyphenylene-based macrocycles. The luminescent behavior of SCPP[8] shows the unique characteristics of both ACQ effect and AIE effect, inducing remarkable redshift emission with near white-light emission. SCPP[8] is configurationally stable and possesses a novel shape-persistent bismacrocycle scaffold with a high strain energy. In addition, SCPP[8] displays enhanced circularly polarized luminescence properties due to AIE effect.