Organoselenium compounds are highly versatile and have been extensively used in pharmaceutical industry, synthetic intermediates and catalysts. Accordingly, the development of efficient and straightforward strategies for constructing these compounds is highly desirable. Lewis base catalyzed and Brønsted acid controlled chemodivergent electrophilic selenofunctionalizations of alkynes were developed for the first time. More details are discussed in the article by Chen et al. on page 1623—1629.

A synergistic stereoselective α-glycosylation with GlcN₃ donors has been developed, which has been successfully applied to collective syntheses of Acinetobacter baumannii capsular polysaccharides K43, K47 and K88 repeating units. More details are discussed in the article by Xiao et al. on page 1593—1598.

In this paper, two novel organic photothermal cocrystals (MTC and MFC) were rapidly prepared by coprecipitation method. Compared with MTC, the introduction of highly electronegative fluorine in MFC results in a stronger charge transfer interaction and a tighter crystal packing structure between MeCz and F₄TCNQ. Consequently, the absorption range of MFC is extended to the NIR-II region and has a high photothermal conversion efficiency of 54.6%. At the same time, we chose MFC and flexible substrate HPDMS to combine and prepare a flexible wearable heater, which exhibited potential application value in the field of light-driven local thermotherapy.

Bifunctional rare earth complexes have been developed for the cycloaddition reactions of epoxides and CO₂, under atmospheric pressure, without co-catalyst to produce value-added cyclic carbonates. Comparative and kinetic experiments confirm the existence of intramolecular synergies between the central metal and the nucleophilic reagent within the catalytic molecule.

This study unfolds through a systematic investigation conducted in sequential steps given below. Initially, the properties of the biomolecules were scrutinized, followed by an examination of the interactions between biomolecules and ZnO NPs. Subsequently, the bonding interactions between acceptor molecules and terminal functional groups were observed. Moving forward, vertical phase separation was investigated by analyzing the connection between modified ZnO NPs and the active layer. Finally, the photovoltaic performance and stability under various stress conditions were thoroughly examined.

A synergistic α-glycosylation method with GlcN₃ as donors has been developed, which enjoys mild reaction conditions, good to high yields, and high stereoselectivities. Furthermore, collective syntheses of A. baumannii CPS K43, K47 and K88 repeating units 1—3 have been achieved for the first time via applications of this α-glycosylation method.

It is worth noting that this is the first example of alkoxycarbonyl radical addition to ynones, providing a series of novel functional derivatives. An IrIII-catalyzed cascade radical addition reaction of biaryl ynones to access two classes of carbon rings has been developed. Key to the desired transformations is the regioselective radical addition to different substituted alkyne.

Reversible addition-fragmentation chain transfer (RAFT)-mediated polymerization-induced self-assembly (PISA) mediated by a binary mixture of a star-like macro-RAFT agent and a linear macro-RAFT agent is developed, allowing for the synthesis of a diverse set of self-assembled star/linear block copolymer blends.

Herein, we report on the chemical synthesis of a tetrasaccharide precursor of the Treponema medium ATCC 700293. When the [2+2] glycosylation strategy could not be carried out due to the mismatch of donor-acceptor reactivities, we successfully completed the synthesis of the target tetrasaccharide precursor using a [3+1] glycosylation strategy.

Lewis base catalyzed and Brønsted acid controlled chemodivergent electrophilic selenofunctionalizations of alkynes were developed for the first time. Various selenium-containing tetrasubstituted alkenes were readily obtained in moderate to excellent yields with complete E/Z selectivities.

The terpolymer of CO₂, 1,3-butadiene and epoxides is synthesized by cationic ring-opening copolymerization of α-ethylidene-δ-vinyl-δ-valerolactone (EVL), an intermediate derived from CO₂ and 1,3-butadiene, with epoxides. The resulted poly(ester-ether) with moderate molecular weight bears all the C=C double bonds derived from 1,3-butadiene, enabling post-polymerization modification and functionalization. Photoinitiated crosslinking through these preserved C=C double bonds produces network with fluorescence and degradation properties.

Herein, we report an efficient annulation cascade reaction between cyclosulfonium salts and alkenes for the synthesis of sulfur-containing N-heterocycles by visible light/copper catalysis under mild conditions. Moreover, the tolerance of various functional groups and scaled-up experiments showed the practicability and potential applications of this methodology.

The earth abundant and easily accessible vanadyl sulfate (VOSO₄) has been demonstrated to be excellent hole transport layer (HTL) for efficient and stable organic solar cells (OSCs). A high power conversion efficiency (PCE) of 18.72% and much improved durability can be simultaneously achieved for PM8:L8-BO based OSCs with the VOSO₄-based HTL.

This work proposes a photochemical modulation-based dynamic fluorescence encryption system, using fluorescent composite materials comprised of a ¹O₂-sensitive fluorophore (F2) and non-emissive polymers. Varied durations of UV irradiation applied to non-emissive polymers yield varying concentrations of ¹O₂ which effciently reacts with F2, thereby enabling distinct fluorescence colors in a time-gated manner.

The issue of molecular diffusion in chemical reactions is of growing interest across multiple fields. Forming or breaking chemical bonds is on fs to ps scales, while diffusion occurs on μs to ms scales. However, recent research challenges the view that these processes are independent. Here, we reviewed this emerging topic and discussed several different measurement methods.

The organic cocrystal strategy has provided a convenient and efficient platform for preparing organic photothermal materials. Charge transfer interactions play an important role in broadening the absorption range and improving the photothermal properties. Consequently, enhancing charge transfer interaction is an effective way to prepare NIR-II organic photothermal cocrystals with low phototoxicity and limited light scattering, and it is conducive to the application in the wearable field. More details are discussed in the article by Zhang et al. on page 1563—1570.

Recent results observed enhanced diffusion in enzymatic and small molecular reactions, challenging the classic paradigm. The breakdown of chemical bonds and molecular diffusion may be related, which were often considered orthogonal for their different time scales. We summarize experimental studies and seek to reconcile the controversial interpretations with an understanding of the limits of measurement tools and the chemical nature of reaction systems. More details are discussed in the article by Wang et al. on page 1659—1664.