Advanced fabrication techniques for polymer-metal nanocomposite films: state-of-the-art innovations in energy and electronic applications.

Polymer-metal nanocomposites are a fascinating class of materials that synergize the distinct properties of polymers and metals. Incorporating metal nanofillers into polymer matrices significantly enhances electrical conductivity, mechanical strength, and thermal stability through intricate chemical interactions. This review provides an in-depth understanding of current and emerging fabrication techniques for polymer-metal nanocomposite films, with a particular focus on advanced chemical mechanisms and the resulting material properties.

Sodium chloride-assisted CVD enables controlled synthesis of large single-layered MoS.

Thin-layer MoS has attracted much interest because of its potential in diverse technologies, including electronics, optoelectronics and catalysis these few years. In particular, finding a simple and effective solution for large-scale growth of thin-layer semiconductor nanosheets is a prerequisite for achieving their excellent performance. In this paper, we investigated four different substrates under identical conditions for MoS film growth and observed a strong correlation between substrate surface conditions and MoS growth.

Kinetic-thermodynamic correlation of conformational changes in ammonium complexes of a flexible naphthocage.

Conformational changes in non-covalent complexes are of fundamental importance to many chemical and biological processes. Yet, these low-energy structural changes are usually fast and difficult to monitor, which poses challenges in their detailed kinetic understanding. The correlation between kinetics and thermodynamics of the conformational change of a model supramolecular system featuring a flexible naphthocage and quaternary ammonium guests is described in this work.

Late-stage peptide modification and macrocyclization enabled by tertiary amine catalyzed tryptophan allylation.

Late-stage modification of peptides could potentially endow peptides with significant bioactivity and physicochemical properties, and thereby provide novel opportunities for peptide pharmaceutical studies. Since tryptophan (Trp) bears a unique indole ring residue and plays various critical functional roles in peptides, the modification methods for tryptophan were preliminarily developed with considerable progress transition-metal mediated C-H activation. Herein, we report an unprecedented tertiary amine catalyzed peptide allylation the S2'-S2' pathway between the N1 position of the indole ring of Trp and Morita-Baylis-Hillman (MBH) carbonates.

Cross-linked KMnO nanoflower composites for high rate and low overpotential Li-CO batteries.

Rechargeable Li-CO batteries are deemed to be attractive energy storage systems, as they can effectively inhale and fix carbon dioxide and possess an extremely high energy density. Unfortunately, the irreversible decomposition of the insoluble and insulating LiCO results in awful electrochemical performance and inferior energy efficiency of Li-CO batteries. Furthermore, the low energy efficiency will exacerbate the extra waste of resources.

Simultaneously enhancing the planarity and electron-donating capability of donors for through-space charge transfer TADF towards deep-red emission.

Through-space charge transfer (TSCT) has been proven effective for designing thermally activated delayed fluorescence (TADF) emitters due to the separation of the frontier molecular orbitals. Although tuning of the interaction between the donor and acceptor by controlling the conformation is known to be crucial for the photophysical properties of TSCT excited states, it remains a challenge to realize efficient red and deep-red emissions. Herein, we designed two TSCT molecules, namely TPXZ-QX and TPXZ-2QX, by using oxygen-bridged triphenylamine (TPXZ) as the electron donor with enhanced planarity and electron-donating capability.

Bismuth nanoparticles embedded in a carbon skeleton as an anode for high power density potassium-ion batteries.

Bismuth is a promising anode for potassium-ion batteries (PIBs) due to its suitable redox potential, large theoretical capacity, and superior electronic conductivity. Herein, we report a Bi@C (Bi nanoparticles uniformly embedded in a carbon skeleton) composite anode which delivers a superior rate performance of 244.3 mA h g at 10.

Correction: Reactions of [60]fullerene with alkynes promoted by OH.

[This corrects the article DOI: 10.1039/D2RA01300B.].

Reactions of [60]fullerene with alkynes promoted by OH.

In the current work, the reactions of [60]fullerene with alkynes promoted by OH (base) are addressed. The treatment of C with alkynes in the presence of TBAOH produces alkynylation products (R-C-H) with high selectivity in -DCB at 100 °C. Plausible reaction mechanisms were proposed.

Over one century after discovery: pyrylium salt chemistry emerging as a powerful approach for the construction of complex macrocycles and metallo-supramolecules.

Over one century after its discovery, pyrylium salt chemistry has been extensively applied in preparing light emitters, photocatalysts, and sensitizers. In most of these studies, pyrylium salts acted as versatile precursors for the preparation of small molecules (such as furan, pyridines, phosphines, pyridinium salts, thiopyryliums and betaine dyes) and poly(pyridinium salt)s. In recent decades, pyrylium salt chemistry has emerged as a powerful approach for constructing complex macrocycles and metallo-supramolecules.

Computational elucidation of the binding mechanisms of curcumin analogues as bacterial RecA inhibitors.

Antimicrobial resistance (AMR) presents as a serious threat to global public health, which urgently demands action to develop alternative antimicrobial strategies with minimized selective pressure. The bacterial SOS response regulator RecA has emerged as a promising target in the exploration of new classes of antibiotic adjuvants, as RecA has been implicated in bacterial mutagenesis and thus AMR development through its critical roles in error-prone DNA repair. The natural product curcumin has been reported to be an effective RecA inhibitor in several Gram-negative bacteria, but details on the underlying mechanisms are wanting.