98%
921
2 minutes
20
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/j.scib.2020.08.004 | DOI Listing |
Beilstein J Org Chem
August 2025
Department of Natural Sciences and Sustainable Resources, Institute of Organic Chemistry, BOKU University, 1190 Vienna, Austria.
Nonreducing disaccharides are prevalent in non-mammalian glycans and glycolipids, serving as pivotal structural components in mycobacterial glycans, microbial oligosaccharide and nucleoside antibiotics, as well as biologically active mimetics of bacterial pathogen-associated molecular patterns (PAMPs). As integral components of PAMPs, 1,1'-linked disaccharide-containing biomolecules play important roles in host-pathogen interactions, cellular signaling, and pathogenesis. Accessing complex biomolecules containing nonreducing disaccharides is often hindered by difficulties in isolating them from natural sources, which can result in impure or degraded products, particularly when sensitive functional groups are involved.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
September 2025
State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
Electrochemical synthesis of ammonia (NH) is a promising green alternative to the conventional Haber-Bosch process. Here, we report the synthesis of a heteroatomic metal-metal bonded dual atomic (DA) Mn-Cu catalytic site embedded within nitrogen-doped carbon (NC) matrix for high-performance electrochemical reduction of N to NH. The asymmetric electronic distribution localized at the dual atomic sites synergistically enhances the adsorption and activation of N, facilitating the complex proton-coupled electron transfer process.
View Article and Find Full Text PDFMater Horiz
September 2025
Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China.
NIR-II probes show great potential for fluorescence imaging (FLI) and therapeutics, where the molar extinction coefficient (MEC), a pivotal optical parameter, governs their imaging quality and therapeutic efficacy. Nevertheless, engineering NIR-II probes with ultrahigh MEC remains a formidable challenge, limiting their biomedical applications. In this work, we designed a superior NIR-II D-π-A-π-D probe, SCU-SX-T, which features an S-xanthene core as the conjugate acceptor, a diphenylamine (DPA) rotor, and π-bridge that induces bathochromic shifts in absorption/emission spectra while enhancing molecular rigidity and planarity.
View Article and Find Full Text PDFChem Sci
August 2025
Department of Applied Chemistry, National Yang Ming Chiao Tung University 1001 University Road Hsinchu 30010 Taiwan
The dielectric constant ( ) of non-fullerene acceptors is a key parameter in organic solar cells, significantly influencing exciton dissociation efficiency and charge recombination dynamics. Substituting bromine, characterized by moderate electronegativity and high polarizability, at the -benzodipyrrole core of acceptors effectively modulates their optical properties, molecular packing, and dielectric constants. The asymmetric monobrominated CBrB-Cl acceptor exhibits a more red-shifted absorption spectrum, enhanced crystallinity, and a higher of 3.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
August 2025
Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK.
Aqueous zinc-ion batteries (ZIBs) offer a safe, cost-effective alternative for large-scale energy storage but are hindered by zinc dendrite growth, hydrogen evolution reactions (HER), and unstable electrode-electrolyte interfaces. These challenges largely stem from strong dipole interactions between symmetric water molecules and Zn, which destabilize the electric double layer (EDL) and trigger parasitic reactions. Drawing inspiration from biological systems that use asymmetric molecular interactions to regulate aqueous environments, we introduce isobutyramide (IAM) as a multifunctional electrolyte additive.
View Article and Find Full Text PDF