Due to the unique advantages of light weight, flexibility, stretchability and biocompatibility, organic solar cells have great commercial application prospects in the fields of wearable and portable electronics. Based on miscibility and crystallinity considerations, Long Ye and co-workers proposed an effective strategy to simultaneously improve device efficiency, mechanical robustness, and stability of all-polymer organic solar cells by refining the aggregation and crystallization behaviors of polymerized Y-series acceptors. This work heralds a bright future of all-polymer systems for flexible wearable energy-harvesting applications. More details are discussed in the article by Ye et al. on page 159—166.

This cover picture describes a novel palladium-catalyzed three-component tandem cyclization reaction between two molecular haloalkynes and one molecular N-alkylaniline for the efficient assembly of 3-halopyrroles. This protocol involves the sequential conversions of two carbon-carbon triple bonds and one carbon-halogen bond in two molecular haloalkynes and features convenient operation, high chemo- and regioselectivites, and good functional group tolerance. In addition, different derivatizations of the newly formed bromopyrroles afford diverse functionalized pyrrole derivatives, demonstrating the practicability of this method. More details are discussed in the article by Wu et al. on page 181—187.

A machine learning model for TEMPO-catalyzed alcohol oxidation was developed, superior prediction accuracy was achieved and unprecedented attention on multi-label prediction of organic chemistry reactions was attracted.

A highly efficient synthesis of an octasaccharide derivative related to Group B carbohydrate from Group B Streptococcus was accomplished via a convergent [3 + 5] glycosylation strategy.

We proposed an effective strategy to simultaneously improve device performance, mechanical robustness, and stability of all-polymer solar cells by properly suppressing the aggregation and crystallization behaviors of polymerized Y-series acceptors. The blends based on mixed polymer acceptors exhibited better photovoltaic efficiency than those with a single polymer acceptor and offered better film flexibility and mechanical stretchability.

An efficient synthesis of heterocyclic nucleosides is developed by a catalyst-free regioselective and diastereoselective [3+2] annulation in the green solvent.

PCN/Cu₃P 2D/2D heterojunction photocatalyst was prepared by an in-situ transformation of g-C₃N₄/CuS 2D/2D heterojunction in a phosphorization treatment and achieved a remarkably enhanced photocatalytic H₂ evolution from water splitting.

An unprecedented palladium-catalyzed three-component tandem cyclization reaction of haloalkynes and N-alkylaniline has been established for the efficient assembly of 3-halo-1,2,5-triarylpyrroles. This protocol involves the sequential conversions of two carbon-carbon triple bonds and one carbon-halogen bond in two molecular haloalkynes and features convenient operation, high chemo- and regioselectivities, good functional group tolerance and various late-stage modifications.

A general and straightforward strategy for the synthesis of thioester-substituted oxindoles via a palladium-catalyzed thiocarbonylative cyclization process has been developed. With both aryl and alkyl sulfonyl chlorides as promising sulfur source, a wide range of thioester-substituted oxindoles were obtained in moderate to high yields.

A visible-light-induced C-5 selective C—H borylation of imidazo[1,2-a]pyridines with NHC-BH₃ via Minisci-type radical borylation reaction has been developed for the first time.

The analytical performance of H⁺-selective solid-contact ion-selective electrodes (SCISEs) based on solid contact polyaniline doped with chloride (PANI(Cl)) and poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT(PSS)) was characterized by a developed coulometric signal transduction method. The exceptional behavior of PANI(Cl) H⁺-SCISEs from coulometric response and impedance spectrum shows that the capacitance estimated from impedance spectrum at low frequency 10 mHz and coulometric signal of PANI(Cl) based SCISEs is influenced by the applied potentials, whereas PEDOT(PSS) solid contact is independent from the chosen applied potentials.

In this review, we introduce the recent advances in electrochemical mass spectrometry (EC-MS) techniques and their applications in real-time analysis and mechanism studies of reactions in electrochemical sensors, organic electrochemistry, and electrocatalysis. We hope this summary will attract the interest of scientists in related areas, who can cooperate and jointly promote the development of this interdisciplinary area.

The preparation strategies, structure-property-function relationships and interesting applications of polyelectrolyte porous membrane (PPMs), particularly the advancements in how to tailor structures and properties of PPMs by rational structure design of poly(ionic liquid)s, have been reviewed. The outlook for the future of PPMs is presented.

In this review, we summarize the different strategies for designing BCP particles with various morphologies by tuning the interfacial interactions of the BCPs and the surrounding water phase. We hope this summary article can stimulate new ideas and inspire continued endeavors in this promising research area.

Modulating charge transfer by constructing high-quality interfacial contacts and charge transfer channel is crucial for an efficient photocatalyst. In this work, a novel PCN/Cu₃P nanosheet with intimate 2D/2D heterojunction was prepared via in-situ phosphorization. Boosted photocatalytic H₂ evolution was achieved due to the smooth charge transfer in the 2D/2D heterojunction. More details are discussed in the article by Liu et al. on page 173—180.

A hollow polydopamine/Zn (HPDA/Zn) ultrasound contrast agent is exploited. In addition to having a good contrast-enhancement capability in ultrasound imaging, HPDA/Zn can also stabilize plaque by inhibiting CREB and reducing plaque-vulnerable markers and inflammatory factors, achieving the treatment of atherosclerosis. More details are discussed in the article by Wu et al. on page 199—206.