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Nanozymes with Modulable Inhibition Transfer Pathways for Thiol and Cell Identification.
Anal Chem
January 2025
Institute of Molecular Metrology, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, P. R. China.
The elementary mechanism and site studies of nanozyme-based inhibition reactions are ambiguous and urgently require advanced nanozymes as mediators to elucidate the inhibition effect. To this end, we develop a class of nanozymes featuring single Cu-N catalytic configurations and B-O sites as binding configurations on a porous nitrogen-doped carbon substrate (B/Cu) for inducing modulable inhibition transfer at the atomic level. The full redistribution of electrons across the Cu-N sites, induced by B-O sites incorporation, yields B/Cu with enhanced peroxidase-like activity versus Cu.
View Article and Find Full Text PDFEffects of Doping on Elastic Strain in Crystalline Ge-Sb-Te.
Materials (Basel)
December 2024
School of Materials Science and Engineering, Kumoh National Institute of Technology, Gumi 39177, Republic of Korea.
Phase-change random access memory (PcRAM) faces significant challenges due to the inherent instability of amorphous GeSbTe (GST). While doping has emerged as an effective method for amorphous stabilization, understanding the precise mechanisms of structural modification and their impact on material stability remains a critical challenge. This study provides a comprehensive investigation of elastic strain and stress in crystalline lattices induced by various dopants (C, N, and Al) through systematic measurements of film thickness changes during crystallization.
View Article and Find Full Text PDFN-Doped Carbon Nanodots as Temperature Sensors and Fluorescent Probes for the Detection of Tinidazole in Milk.
J Fluoresc
January 2025
School of Science, Jiangnan University, Wuxi, 214122, China.
In this study, nitrogen-doped carbon nanodots (N-CDs) with temperature and fluorescence sensing were prepared via hydrothermal method using L-lysine and ethylenediamine as precursors. The synthesized N-CDs exhibited spherical morphology with sizes ranging from 2.8 to 5.
View Article and Find Full Text PDFUltrasensitive turn-off fluorescent sensor for estimation of the new influenza antiviral prodrug baloxavir marboxil in its pharmaceutical formulation.
R Soc Open Sci
January 2025
Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt.
Carbon quantum dots (CQDs) are a recently developed class of fluorescent nanoparticles made from carbon. Co-doping with heteroatoms such as nitrogen and sulfur improved the properties and generated a high quantum yield. In the proposed study, we utilized a simple, cost-effective, single-stage hydrothermal approach to produce extreme photoluminescence co-doped, nitrogen and sulfur, CQDs (N,S-CODs).
View Article and Find Full Text PDFHuman Growth Hormone (GH) use by Athletes with Short Stature without GH Deficiency: Therapeutic Use Exemptions.
J Clin Endocrinol Metab
January 2025
Division of Diabetes and Endocrinology, Department of Pediatrics, University of Virginia, Charlottesville, VA.
Organized sports are governed by specific rules which aim to create or preserve fair play. An unfair advantage can be obtained by the use of specific substances or methods, also referred to as doping. The World Anti-Doping Agency (WADA) leads the international doping-free sport movement and annually publishes the List of Prohibited Substances and Methods (List), that is used by most sport federations and organizations around the world.
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