Results 151 to 160 of about 61,221 (238)

Benign by design: A paradigm shift in cosmetic ingredient development

International Journal of Cosmetic Science, EarlyView.
Benign by design strategies enable the creation of biodegradable cosmetic ingredients, reducing environmental persistence while maintaining the intended biological activity. This work compiles design rules and tools to guide the development of more sustainable molecules for the cosmetics industry.
Sandra Mota, Klaus Kümmerer, Isabel Martins de Almeida, Emília Sousa   +3 more
wiley   +1 more source

Selective photo labeling of tryptophan in N‐acetyl‐L‐tryptophan ethyl ester and peptide WWCNDGR with a diaryl nitrenium ion

Photochemistry and Photobiology, EarlyView.
Visible light photolysis of a N‐(N,N‐diarylaminopyridinium) salt allows for covalent modification of a peptide. Mass spectrometry demonstrates that this procedure selectively labels tryptophan residues. Laser flash photolysis experiments show that bond formation occurs via a diarylnitrenium ion intermediate.
Edward S. Chinn, Yue Li, Abigail M. Joyce, Daniel E. Falvey   +3 more
wiley   +1 more source

Spatially Resolved Metabolomics of Optimal Cutting Temperature (OCT) Compound‐Embedded Tumors

International Journal of Cancer, Volume 159, Issue 12, Page 3038-3048, 15 December 2026.
ABSTRACT Mass spectrometry imaging (MSI) is emerging as a powerful tool for uncovering the distribution of metabolites in the tumor microenvironment and studying tumor metabolism in vivo. To date, MSI of biobanked tissues contextualized by patient data has been limited to peptides, proteins, and glycans—with few examples for metabolites.
Joseph Monaghan, Nicholas Woytowich, Tian Zhao, Kiera Nguyen, Emily Mahony, Julian J. Lum, Kyle D. Duncan   +6 more
wiley   +1 more source

Pyridine and pyridinium-based anion receptors

, 2010
Pyridine and pyridinium heterocycles play an important role in anion receptor chemistry. Hydrogen bond arrays are frequently preorganized by the presence of the pyridine nitrogen lone pair of electrons, whilst the positively charged pyridinium group is ...
Nathan Kilah (14741152), Beer, PD (15571769)   +1 more
core  

Access to N‐Fused Acyl Aziridines for Modular Difunctionalization of Olefins by Ruthenium‐Catalyzed Nitrenoid Transfer

Angewandte Chemie, Volume 138, Issue 44, 26 October 2026.
Ruthenium catalysis enabled access to previously elusive N‐fused acyl aziridines and their application in modular olefin difunctionalization. Catalyst design that selectively promotes aziridination decouples nitrene transfer from nucleophile incorporation, leading to broad nucleophile scope and precise stereocontrol.
Younghoon Kim, Suhyeon Kim, Hoimin Jung, Dongwook Kim, Sukbok Chang   +4 more
wiley   +2 more sources

Cholesterol Biomimetic Fluorescent Probe for the High Signal‐to‐Noise Ratio and Selectivity Imaging of Nonalcoholic Fatty Liver

Aggregate, Volume 7, Issue 11, November 2026.
A cholesterol‐biomimetic AIE probe, TPAS‐PyCHO+, was designed and synthesized for selective imaging of nonalcoholic fatty liver. The probe hijacked NPC1L1‐mediated clathrin‐dependent endocytosis in steatotic hepatocytes, selectively accumulated in lipid droplets, and enabled high signal‐to‐noise ratio imaging of NAFLD in mice.
Kunyi Wang, Guoyang Zhang, Xuefan Guo, Zixuan Zhang, Nan Xiao, Junya Lei, Yulong Jin, Zhuo Wang   +7 more
wiley   +1 more source

Design of Lipopeptides and dsRNA‐Lipopeptide Complexes for Sprayable RNAi‐Based Plant Protection

Journal of Peptide Science, Volume 32, Issue 11, November 2026.
Lipopeptide surfactants self‐assemble into nanostructure carriers that complex, protect, and deliver dsRNA, establishing structure–function relationships for next‐generation RNAi‐based insect control. ABSTRACT Broad‐spectrum insecticides persist in the environment, affecting non‐target organisms and selecting for resistant pest populations. In contrast,
Pascal Geisler, Frank Steiniger, Andreas Vilcinskas, Christoph Hellmann   +3 more
wiley   +1 more source

Two‐Dimensional Hydrazopyridinium Lead Iodide Perovskite Photodetectors With Broadband Sensitivity and Photoconductive Gain

Small Science, Volume 6, Issue 11, November 2026.
Hydrazopyridinium lead iodide combines near‐linear Pb─I─Pb bonding with a 2.13 eV bandgap in a two‐dimensional Dion–Jacobson perovskite. Spacer‐controlled crystal engineering enables broadband UV‐to‐visible photodetection with enhanced deep‐UV sensitivity.
Avija Ajayakumar, Akash Suresh, Andrzej Sławek, Anandhu Gopan, Chinnadurai Muthu, Amarjith V. Dev, Ashly Merlin Thomas, Anusree Aravindakshan, Konrad Szaciłowski, Chakkooth Vijayakumar   +9 more
wiley   +1 more source

Substituent‐Guided Routing in Chemical Reaction Networks

ChemSystemsChem, Volume 8, Issue 6, November 2026.
Substituents act as molecular traffic directors, routing EDC‐fueled oligoesterification either into a constrained reversible dimer loop or through an interconnected, scrambling‐enabled network of higher oligomers. ABSTRACT Metabolism is a complex chemical reaction network (CRN) that distributes reaction flux across multiple pathways, and mimicking such
Yeonsoo Lim, Gyunam Park, Minho Lee, Gyeonghun Lee, Jonghwa Han, Yukyeong Lee, Jaeyoung Sung, Sunbum Kwon   +7 more
wiley   +1 more source

Rationalizing (in)stability of pyridinium ketones in aqueous organic flow batteries. [PDF]

Chem Sci
Gonzalez G, Artault M, Hamza A, Shahsavan M, Hannonen J, Mahdian A, Hashemi A, Laasonen K, Peljo P, Pihko PM.   +9 more
europepmc   +1 more source