4-(2-Hydroxyethyl)piperazin-1-ium iodide (PZOI) is a functional ammonium salt that can simultaneously reduce shallow/deep-level defect densities by passivation effect and form 2D component, respectively. These advances reduce the energy loss of single-junction devices and significantly enhance the efficiency and stability of perovskite/organic tandems. More details are discussed in the article by Li et al. on page 1819—1827.

Copper-based catalysts are frequently employed for carbon dioxide reduction reactions (CO₂RR), yet the regulation of pore structure and surface state of electrocatalysts remains a prominent challenge in previous research endeavors. In this study, we introduce a novel technique to produce mesoporous Cu₂O nanocrystals, with finely tuned pore size and surface amine functionality leveraging the incorporation of various amine compounds during the oxidative process of copper nanocrystals. The synergistic effect of pore structure confinement and surface amine functionalization culminates in an impressive Faradaic efficiency (FE) of 51.9% for the selective production of C₂H₄. More details are discussed in the article by Huang et al. on page 1846—1852.

PZOI, consisting of a piperazine iodide and terminated hydroxyl, was used to post-treat the defect-rich wide-bandgap (WBG) perovskite film surface. This treatment can effectively reduce the shallow and deep-level defect densities by forming Pb—O coordination and 2D perovskite, respectively. These advances reduce the energy loss of WBG perovskite film surface by 40 meV, and significantly promote the power conversion efficiency of perovskite/organic TSCs to 24.05%.

Herein, an asymmetric isomerization/intramolecular coupling reaction of allylic alcohols to synthesize chiral dihydrocoumarins was successfully accomplished through ruthenium catalysis. This method demonstrates a wide substrate applicability, excellent tolerance for various functional groups, and good enantioselectivities (up to 90% ee). It provides a convenient pathway to produce a diverse range of structurally distinct chiral dihydrocoumarins in good efficiency.

An efficient electrochemical approach has been developed for the construction of 3-sulfanylquinoline derivatives by treating phenylethynylbenzoxazinanones with disulfides in an undivided cell. The protocol provides a convenient route to functionalizing quinolines with good functional group tolerance. Moreover, and it does not require any metal catalysts or additives, furnishing a series of biological quinolines in moderate to good yields.

Herein, we developed a universal strategy for haloazidation of alkenes through controlling the reactivity of IBA-N₃ by switching halogen salts, allowing for the synthesis of a diversity of halogen azide products. Mechanistic studies have shown that by tuning the reactivity of IBA-N₃ via switching halogen salts, different intermediates can be controllably produced to achieve regioselectivity and chemoselectivity in the haloazidation of alkenes.

Mesoporous Cu₂O nanocrystals with tunable pore structures and surface functional groups of amine derivatives are successfully prepared, showing the promising use for selective electrochemical CO₂ reduction into ethylene at a high Faraday efficiency.

An alkyl radical initiated cyclization/tandem reaction of alkyl bromides and K₂S₂O₅ with alkyl electrophiles is developed for the synthesis of various lactam-substituted alkyl sulfones in a metal-free catalytic system.

A relay bicatalysis system involving (PyBox)Co catalyzed Markovnikov hydrosilylation of terminal alkynes and subsequent alkene isomerization enabled by (PPI)Fe was developed. This Co/Fe dual catalysis offers an atom-economical and efficient approach to trisubstituted (E)-alkenyl silanes from widely accessible terminal alkynes with high regio- and stereoselectivities under mild conditions.

Surface charge and synergy of electrostatic and hydrophobic interactions modulate the aggregation pathway of α-Synuclein.

The anisotropic plasmon resonance nature of Au nanorods is utilized to simultaneously achieve photothermal and photochemical functionalities towards synergistic photocatalysis in an Au@SiO₂-Pd nanocomposite.

A series of novel Salen-type luminescent porous organic polymers (POPs) with different topologies were designed and facilely synthesized by the catalyst-free and one-pot polycondensation reactions between polyfunctional aggregation-induced emission luminogen-containing salicylaldehyde derivatives and chiral diamines. With the Salen units in polymer backbones as tetradentate ligands, a series of POP-metal complexes were further prepared. The obtained POPs possess remarkable chiroptical properties, multistimuli-responsive fluorescence and acid-induced degradation capabilities, and the degradation process can be directly visualized and dynamically monitored via fluorescence variation.

A novel macrocycle based on conformation-adaptive and electron-rich dihydrophenazine was designed and synthesized, and its host-guest properties and radical cation species were investigated. The resultant macrocycle could bind electron-deficient guest TCNQ to form a host-guest complex, and the oxidation of the macrocycle generated a stable diradical cation and induced the release of the guest molecule.

Artemdubones A—F (1—6) were isolated from Artemisia dubia var. subdigitata. Compounds 1, 2 and 3a/3b possessed a unique 6/6/6-tricyclic system comprising an unusual 1-(2-methylcyclohexyl) propan-1-one moiety fused with isocoumarin core skeleton. Compounds 4a/4b were characterized as an unexpected 2,5-dimethylcyclohexan-1-one scaffold, and compounds 5a/5b and 6a/6b were rare 1,2-seco-isocoumarin

The latest advancements in the electrochemical defluorinative transformations of C—F bonds have been summarized and mainly concentrate on the reaction design, mechanistic insights, and developmental prospects of these methods.

Anisotropic localized surface plasmon resonance in gold nanorods achieves spatiotemporal control over the photochemical and photothermal functional modules towards wavelength-dependent, site-selective plasmonic photocatalytic hydrogen production through water splitting. More details are discussed in the article by He et al. on page 1877—1885.

This paper presents a novel macrocycle based on conformation-adaptive and electron-rich dihydrophenazine. The macrocycle exhibits host-guest interaction with tetracyanoquinodimethane (TCNQ) driving by charge transfer interaction between them. The host-guest complex forms stable radical cation species upon oxidation, resulting in the release of TCNQ from the macrocyclic cavity, thereby successfully achieving the reversible binding of guest molecules. More details are discussed in the article by Yang et al. on page 1895—1900.