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Here, we present a versatile modular strategy for crafting novel covalent organic cages (-cage[]arenes and -cage[]arenes, = 3,4) and bimacrocycles (-bimacrocyclic-arenes) with stable backbones and modifiable rims. These structures can be synthesized from commercially available aromatic multialdehydes in a three-step process: quantitative bromination, Suzuki-Miyaura reaction (yielding over 60%), and a rapid one-pot Friedel-Crafts reaction with paraformaldehyde. Notably, the cage[]arenes exhibit a well-defined prismatic shape, and the bimacrocyclic-arenes display both dimeric and monomeric configurations.
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http://dx.doi.org/10.1021/acs.orglett.4c00033 | DOI Listing |
Nat Chem
September 2025
Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow, India.
[2,1]-Azaboranaphthalenes represent unique boron-nitrogen (BN) isosteres of naphthalenes, attracting interest for the development of molecules with enhanced therapeutic potency. The existing synthetic strategies are generally two-component reactions with harsh conditions. Here we report an organocatalysed three-component modular synthesis of ring-fused BN isosteres and BN-2,1-azaboranaphthalenes following ring expansion of unstrained cyclic ketones (n = 4-8) via Wolff-type rearrangement.
View Article and Find Full Text PDFAnal Chem
September 2025
Jiaxing Key Laboratory of Molecular Recognition and Sensing, College of Biological and Chemical Engineering, Jiaxing University, Jiaxing 314001, China.
Despite the promise of electrochemical biosensors in amplified nucleic acid diagnostics, existing high-sensitivity platforms often rely on a multilayer surface assembly and cascade amplification confined to the electrode interface. These stepwise strategies suffer from inefficient enzyme activity, poor mass transport, and inconsistent probe orientation, which compromise the amplification efficiency, reproducibility, and practical applicability. To address these limitations, we report a programmable dual-phase electrochemical biosensing system that decouples amplification from signal transduction.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States.
Slippery liquid-infused porous surfaces (or "SLIPS") can prevent bacterial surface fouling, but they do not inherently possess the means to kill bacteria or reduce cell loads in surrounding media. Past reports show that the infused liquids in these materials can be leveraged to load and release antimicrobial agents, but these approaches are generally limited to the use of hydrophobic agents that are soluble in the infused oily phases. Here, we report the design of so-called "proto-SLIPS" that address this limitation and permit the release of highly water-soluble (or oil-insoluble) agents.
View Article and Find Full Text PDFAdv Mater
September 2025
College of Smart Materials and Future Energy, and State Key Laboratory of Photovoltaic Science and Technology, Fudan University, Shanghai, 200438, China.
Nonfullerene acceptor-based organic solar cells have recently taken a milestone leap with power conversion efficiencies approaching 20%. A key to further boost the efficiencies up to the Shockley-Queisser limit rests upon attaining a delicate balance between exciton dissociation and charge transport. This perspective presents two seminal and reciprocal strategies developed by our group and others to reconcile the intricacy of charge carrier dynamics, spanning from intrinsic molecular structure design to extrinsic dopant exploitation.
View Article and Find Full Text PDFChemMedChem
September 2025
Faculty of Pharmacy, PHENIKAA University, Hanoi, 12116, Vietnam.
Antimicrobial peptides (AMPs) have emerged as promising candidates for combating drug-resistant pathogens and certain cancer types. However, their therapeutic applications are often limited by undesired hemolytic activity, while many AMPs exhibit only moderate potency. Herein, the "helical wheel rotation" strategy as a simple, cost-effective, and modular approach to optimize the pharmacological properties of amphipathic α-helical AMPs without altering their amino acid composition is explored.
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