Chemical reactions and processes often involve chiral, yet racemic, cationic reagents, intermediates, or products. To afford instead nonracemic or enantiopure compounds, an asymmetric ion pairing of the cations with enantiopure anions can be considered--the counter ions behaving as asymmetric auxiliaries, ligands, or reagents. Detailed herein is a short review of our approach toward gaining reliable and predictable control over stereoselective ion pairing phenomena through the synthesis and use of novel configurationally stable hexacoordinated phosphate anions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/tcr.20124 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Buccal Absorption of Biopharmaceutics Classification System III Drugs: Formulation Approaches and Mechanistic Insights.
Pharmaceutics
December 2024
Aston Pharmacy School, Aston University, Birmingham B4 7ET, UK.
Buccal drug delivery emerges as a promising strategy to enhance the absorption of drugs classified under the Biopharmaceutics Classification System (BCS) Class III, characterized by high solubility and low permeability. However, addressing the absorption challenges of BCS Class III drugs necessitates innovative formulation strategies. This review delves into optimizing buccal drug delivery for BCS III drugs, focusing on various formulation approaches to improve absorption.
View Article and Find Full Text PDFSynthesis and Complex Dielectric Properties of BaSrSnO Ceramics with Thorn-like Microstructure.
Materials (Basel)
December 2024
School of Physics and Electronic Information, Yantai University, Yantai 264005, China.
In this study, we synthesized perovskite BaSrSnO ceramics with a unique thorn-like microstructure using the solid-state reaction method. The structural and complex dielectric properties were investigated in detail. X-ray diffraction was employed to characterize the phase purity, while X-ray photoelectron spectroscopy was used to analyze the chemical state of the components.
View Article and Find Full Text PDFOptical, Mechanical, and Chemical Impact of Brushing with Activated Charcoal Toothpowder and Toothpaste on Dental Enamel: An In Vitro Evaluation.
Materials (Basel)
December 2024
Department of Dentistry, Federal University of Maranhão (UFMA), São Luís 65080-805, MA, Brazil.
This in vitro study evaluated the effects of brushing with activated charcoal powder or toothpaste on enamel surface properties, including color change (ΔE), Knoop microhardness (HK), roughness (Ra), and the characteristics of the resulting brushing slurry [pH, fluoride (F), and calcium (Ca) concentration]. A total of 48 enamel samples were stained and divided into 4 groups ( = 12): activated charcoal toothpaste (AC-T), activated charcoal powder (AC-P), hydrogen peroxide-based whitening toothpaste (HP-T), and conventional toothpaste (C-T, positive control). The samples were subjected to a brushing cycling model, and ΔE, HK, Ra and enamel morphology were analyzed at baseline (T0) and after brushing cycle (T1).
View Article and Find Full Text PDFUsing High-Entropy Configuration Strategy to Design Spinel Lithium Manganate Cathodes with Remarkable Electrochemical Performance.
Small
January 2025
National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology, Key Laboratory of Advanced Battery Materials of Yunnan Province, Faculty of Metallurgical and Energy Engineering, Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, China.
Owing to its abundant manganese source, high operating voltage, and good ionic diffusivity attributed to its 3D Li-ion diffusion channels. Spinel LiMnO is considered a promising low-cost positive electrode material in the context of reducing scarce elements such as cobalt and nickel from advanced lithium-ion batteries. However, the rapid capacity degradation and inadequate rate capabilities induced by the Jahn-Teller distortion and the manganese dissolution have limited the large-scale adoption of spinel LiMnO for decades.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!