Chiral ion transfer and detection at a liquid-liquid interface using chiral stationary phases such as cyclodextrins; could lead to alternative methods of chiral detection and separation.
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http://dx.doi.org/10.1039/b822685g | DOI Listing |
Adv Mater
January 2025
MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
2D Dion-Jacobson (DJ) chiral perovskite materials exhibit significant promise for developing high-performance circularly polarized light (CPL) photodetectors. However, the inherently thick nature of DJ-phase 2D perovskite single crystal limits their ability to differentiate CPL photons with the two opposite polarization states. In addition, the growth of DJ-phase perovskite single crystal thin films (SCTFs) has proven challenging due to the strong interlayer electronic coupling.
View Article and Find Full Text PDFSmall
January 2025
CNR NANOTEC Institute of Nanotechnology, Via Monteroni, 73100, Lecce, Italy.
Photonics bound states in the continuum (BICs) are peculiar localized states in the continuum of free-space waves, unaffected by far-field radiation loss. Although plasmonic nano-antennas squeeze the optical field to nanoscale volumes, engineering the emergence of quasi-BICs with plasmonic hotspots remains challenging. Here, the origin of symmetry-protected (SP) quasi-BICs in a 2D system of silver-filled dimers, quasi-embedded in a high-index dielectric waveguide, is investigated through the strong coupling between photonic and plasmonic modes.
View Article and Find Full Text PDFNanoscale
January 2025
Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares and Departamento de Química Orgánica Universidade de Santiago de Compostela Santiago de Compostela, Spain.
Poly(phenylacetylene)s (PPAs) bearing -substituted anilide pendant groups are sensitive to the presence of oxidizing metal ions such as Cu, Hg, Fe, Au or Ce due to a redox reaction between the anilide-PPA and the metal ion. Using a library of six different PPAs containing diverse chiral pendant groups connected to the PPA backbone through the N (anilide) or C (benzamide) atoms of an amide group used as a linker, it was found that anilide-PPAs are sensitive to oxidizing metal ions. In these polymers, and through a redox reaction, a radical species is delocalized along the polyene backbone, resulting in a color change of the solution from yellow to blue.
View Article and Find Full Text PDFChirality
February 2025
Daicel Chiral Technologies, West Chester, Pennsylvania, USA.
The influence of additives and modifiers on the chiral HPLC separation of the nicotine enantiomers using UV/Vis detection is discussed. Selected alcohols as modifiers and selected amines as additives were found to have a significant effect on the resolution and retention times of nicotine enantiomers even to the point of eliminating component elution. Systematic variations in the concentration of ethanol, methanol, and isopropanol, as modifiers, along with variations in the concentration of diethylamine, triethylamine, tributylamine, ethylenediamine, isopropylamine, as additives, revealed that the average resolution (R) of the nicotine enantiomers ranged from 2.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Nanjing University, School of Chemistry and Chemical Engineering, 163 Xianlin Avenu, 210023, Nanjing, CHINA.
Glycans, unlike uniformly charged DNA and compositionally diverse peptides, are typically uncharged and exhibit rich stereoisomeric diversity in the glycosidic bonds between two monosaccharide units. This heterogeneity of charge and the structural complexity present significant challenges for accurate analysis. Herein, we developed a novel single-molecule oligosaccharide sensor, OmpF nanopore.
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