High-efficiency interparticle DNA walker amplifier combined with N-Ti3C2 quantum dots as electrochemiluminescence emitters for sensitive protein assay

In this feature article, we provide an overview of the photocatalytic capabilities of copper-based nanoclusters for organic bond-forming reactions. 

Copper nanoclusters: emerging photoredox catalysts for organic bond formations

The merger of a metal-organic framework and an electron-proton transfer mediator for photocatalytic selective aerobic oxidation of amines

An Unusual Double-Chelated HATNA-Based Metal-Organic Framework as Highly Efficient Ornidazole Sensor

Global energy scarcity and environmental crises driven by fossil fuel dependence necessitate innovative carbon-negative technologies. Artificial photosynthetic systems (APS), particularly metal-organic frameworks (MOFs), have emerged as transformative platforms for photocatalytic CO2 reduction reactions (CO2RR), offering dual solutions for sustainable fuel production and CO2 utilization. MOFs' crystalline porous architectures enable molecular-level integration of band structure engineering, spatially ordered active sites, hierarchical CO2 adsorption, and optimized charge transport, surpassing conventional semiconductor catalysts in selectivity, efficiency, and stability. This Review examines recent strategies to enhance the photocatalytic performance of MOFs by engineering metal nodes, organic linkers, and pore microenvironments, with a focus on three pillars: photon harvesting, charge transfer dynamics, and selective multicarbon (C2+) product generation. As research pivots toward C2+ fuels, we analyze structural design principles governing C-C coupling, emphasizing synergistic metal-linker interactions, pore confinement effects, and catalytic site precision. Key advancements in light absorption via linker functionalization, charge separation through conductive pathways, and tailored active sites for kinetic control are critically evaluated. By establishing structure-property relationships, this work highlights the unique capacity of MOFs to bridge atomic-scale tunability with macroscopic catalytic efficacy, providing a roadmap for developing high-performance photocatalysts that convert CO2 into value-added hydrocarbons. The insights presented aim to accelerate the transition from incremental CO2 mitigation to scalable, solar-driven, carbon-negative energy systems.

Metal–Organic Frameworks for Photocatalytic CO 2 Reduction: Progress and Prospects

The self-assembly of mechanoluminochromic polynuclear gold(I) complexes has attracted more and more attention in the field of supramolecular gold(I) chemistry. In this work, we adopted a stepwise self-assembly strategy to precisely synthesize two polynuclear gold(I) supramolecular clusters. Through cooperative AuI···AuI and Au-N interactions, the gold(I) clusters 1+•BF4- and 24+•4BF4- with Au4 and Au16 cores, respectively, were successfully constructed. In these supramolecular clusters, (dppm)Au2Cl2 coordination motifs and trithiocyanuric linkers were stepwise assembled via sequential thiolate-chloride/phosphine coordination substitution and Au-S/Au-N coordination bond rearrangement. Two well-defined gold(I) supramolecular clusters displayed intense emission both in the solid state and in solution. Furthermore, the ladder-shaped cluster 24+•4BF4- exhibited reversible mechanochromic luminescence behavior in the solid state as well as aggregation-caused redshifted emission in solution. Upon mechanical grinding, the emission of the cluster 24+•4BF4- changed from yellow at 582 nm to red at 612 nm. The initial emission could be fully recovered by treatment with acetonitrile.

Self-Assembly of Mechanoluminochromic Ladder-Shaped Gold(I) Clusters Promoted Using Cooperative Aurophilicity.

Multi-component Self-assembled Heteroleptic Cu(I) Complex with Defective Coordination Site as a Fluorescent Probe to Detect Zn2+

Heterogeneous photocatalysts with high activity and reactive free radicals can be used to effectively remove water pollutants in harsh environments, which have attracted considerable attention in the environment chemistry. Here, we designed two conjugated organic porous polymers POPs 1-2 with high redox activity and potential π-electron delocalization. Upon combination with silver(I) nitride salt in solution, two metal-anchoring polymeric catalysts POPs 3-4 were successfully constructed, which possessed a strong electron donating ability as well as a high coplanarity and photoelectron properties. Through the loading of AgNO3, the carrier separation ability was effectively improved and the photocatalytic activity of POPs 3-4 was enhanced because of the surface plasmon resonance (SPR) effect of Ag localized at the polymer surface. The photocatalytic results demonstrated that POPs 3-4 could degrade RhB, MO and TC under visible light irradiation. The photodegradation efficiency reached 82.9% for RhB, 28.6% for Mo and 56.6% for TC with the presence of POP-3, and 76.3% for RhB, 51.1% for Mo and 37.7% for TC with the presence of POP-4, respectively. Furthermore, two porous polymer catalysts showed an excellent reusability in heterogenous conditions, the performance results show that the cycle degradation efficiency has been consistently maintained at over 90%. This demonstrates the robust and reliable performance of the material under repeated test conditions. A plausible photocatalytic mechanism triggered by ROS was proposed for the degradation of organic contaminant. This work on silver(I)-anchored porous organic polymers provided a possibility for development of the highly effective photocatalyst materials towards organic pollutants photodegradation under mild conditions. 

Visible-light-induced Photocatalytic Degradation of Organic Contaminants by Silver(I)-loaded N-rich Porous Organic Polymers

The Anion-Directed Self-Assembly of Tubular Helical Silver (I)-Based Coordination Polymers and the Adsorption Properties of Hazardous Substances

It is vital to create supramolecular dyes with excellent photo-luminescence properties based on host-gust interaction. In this study, we present three novel self-assembled cationic supramolecular dyes driven by host-guest electrostatic interaction and with ultrasmall cavities. These cationic dyes were developed and synthesized using pyridine-substituted phenanthrene, triphenylamine (TPA), and tetraphenyl ethylene (TPE) as chromophores through the pyridine quaternary ammonium salt reaction. These anion-trapped supramolecular dyes exhibit outstanding aggregation-induced emission (AIE) characteristics as well as reversible mechanochromism behavior and high solid-state fluorescence quantum yields (∼60.87 %). Furthermore, the cationic supramolecular dyes directly stain cotton fibers with 50 % dyeing rate in water-methanol solutions, in which the deprotonated glucose-O- guest possibly interacts with the cationic dye through host-guest encapsulation. Additionally, we characterized the dyeing process through IR spectroscopy, UV–vis spectroscopy, fluorescence spectroscopy, and energy-dispersive X-ray spectroscopy (EDS). Due to the reversible, tractable, and high-contrast mechanochromism of the dyes, they can make up a color-changing flower pattern. Thus, we anticipate that these dyes will have potential applications in information security storage and anti-counterfeiting. 

Anion-directed cationic supramolecular dyes with reversible mechanochromism and fabric staining

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