AI Article Synopsis
- Each crystal in a conglomerate consists of only one enantiomeric form: either dextrorotatory (right-handed) or levorotatory (left-handed).
- Analyzing a single crystal using liquid chromatography on chiral support with chiroptical detection is an effective way to identify the presence of a conglomerate.
- This method is quicker and simpler than traditional techniques, and two examples are given to illustrate its effectiveness.
Article Abstract
In conglomerates, each single crystal contains only one of the two possible enantiomeric forms--either dextrorotatory or levorotatory. The analysis of a single crystal by liquid chromatography on chiral support associated with chiroptical detection is a very efficient tool to reveal the occurrence of a conglomerate. In terms of rapidity and easiness, this method compares favorably with the classical methods used to show this occurrence. Two examples are provided.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/chir.20405 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Discovery of potent antiosteoporotic cyclic depsipeptides with an unusual nitrile hydroxy acid from Microascus croci.
Bioorg Chem
January 2025
National Center for Screening New Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China. Electronic address:
Two cyclic octadepsipeptides, microascusins A and B (1 and 2), were identified from the marine sponge-associated Microascus croci IMB19-064 co-cultivated with Escherichia coli. Their structures and conformations in solution were determined by comprehensive spectroscopic data analysis. The absolute configurations of amino and hydroxy acids were determined by the advanced Marfey's and O-Marfey's methods, respectively, as well as chiral-phase HPLC analysis.
View Article and Find Full Text PDFPrebiotic RNA self-assembling and the origin of life: Mechanistic and molecular modeling rationale for explaining the prebiotic origin and replication of RNA.
Acta Histochem
January 2025
School of Chemistry, University of Glasgow, Glasgow G12 8QQ, UK.
In recent years, a great interest has been focused on the prebiotic origin of nucleic acids and life on Earth. An attractive idea is that life was initially based on an autocatalytic and autoreplicative RNA (the RNA-world). RNA duplexes are right-handed helical chains with antiparallel orientation, but the rationale for these features is not yet known.
View Article and Find Full Text PDFHafnium-Based Chiral 2D Organic-Inorganic Hybrid Metal Halides: Engineering Polarity and Nonlinear Optical Properties via -Substituent Effects.
J Am Chem Soc
January 2025
Department of Chemistry, Sogang University, Seoul 04107, Republic of Korea.
Two-dimensional (2D) organic-inorganic hybrid metal halides (OIMHs), characterized by noncentrosymmetric structures arising from the incorporation of chiral organic molecules that break inversion symmetry, have attracted significant attention. Particularly, chiral-polar 2D OIMHs offer a unique platform for multifunctional applications, as the coexistence of chirality and polarity enables the simultaneous manifestation of distinct properties such as nonlinear optical (NLO) effects, circular dichroism (CD), and ferroelectricity. In this study, we report the first synthesis of hafnium (Hf)-based chiral 2D OIMHs, achieved through the strategic incorporation of -substituents on the benzene ring of chiral organic components.
View Article and Find Full Text PDFMany-Body Systems with Spurious Modular Commutators.
Phys Rev Lett
December 2024
Kadanoff Center for Theoretical Physics, University of Chicago, Chicago, Illinois 60637, USA.
Article Synopsis
- A proposed relationship exists between the chiral central charge of gapped, two-dimensional quantum systems and a bulk entanglement measure called the modular commutator.
- Evidence supports this relation, but it is shown in this study that it is not universal across all systems.
- The authors present examples of lattice systems with a zero chiral central charge that still produce nonzero "spurious" modular commutator values, demonstrating this discrepancy in both one- and two-dimensional setups.
On-Chip Elastic Wave Manipulations Based on Synthetic Dimension.
Phys Rev Lett
December 2024
Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Zhengzhou 450001, China.
Article Synopsis
- Researchers are focusing on manipulating elastic waves in lower-dimensional mechanical metamaterials to design miniaturized elastic devices, but controlling these waves in higher dimensions is challenging.
- This study introduces a structural parameter to explore on-chip Weyl physics in a silicon-on-insulator system, creating an in-plane pseudomagnetic field that facilitates robust energy transport through chiral Landau levels.
- Unique boundary states are observed near the corners, differing from traditional topological states, and the use of synthetic dimensions allows for advanced multidimensional elastic wave manipulation and exploration of higher-dimensional physics on integrated platforms.
Want 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!