Inducing transient enantiomeric excess in a molecular quantum racemic mixture with microwave fields [PDF]
Nature Communications, 2023 There is growing interest in controlling and manipulating molecules using external field. Here the authors demonstrate microwave induced transient enantiomeric excess in a state-selective benzyl alcohol using microwave six-wave mixing.
Wenhao Sun +5 more
doaj +5 more sources
Prebiotic formation of enantiomeric excess D-amino acids on natural pyrite [PDF]
Nature CommunicationsD-amino acids, found in excess in a minority of organisms and crucial for marine invertebrates, contrast with the more common L-amino acids in most life forms.
Ruiqi Li +5 more
doaj +5 more sources
Amplification of enantiomeric excess by dynamic inversion of enantiomers in deracemization of Au38 clusters [PDF]
Nature Communications, 2020 Symmetry breaking and amplification processes play a fundamental role in nature and technology. Here, the authors show that the interplay between racemization and ligand exchange leads to amplification of enantiomeric excess of intrinsically chiral metal
Yanan Wang +2 more
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Determination of Enantiomeric Excess by Optofluidic Microlaser near Exceptional Point [PDF]
Advanced Science, 2023 Enantiomeric excess (ee) is an essential indicator of chiral drug purification in the pharmaceutical industry. However, to date the ee determination of unknown concentration enantiomers generally involves two separate techniques for chirality and ...
Zhiyang Xu +6 more
doaj +4 more sources
Assembly of mesoscale helices with near-unity enantiomeric excess and light-matter interactions for chiral semiconductors. [PDF]
Sci Adv, 2017 Mesoscale CdTe helices with near-unity enantiomeric excess offer insight into design rules for chiroptical semiconductor materials. Semiconductors with chiral geometries at the nanoscale and mesoscale provide a rich materials platform for polarization ...
Feng W +6 more
europepmc +4 more sources
Green Multi-Platform Solution for the Quantification of Levodopa Enantiomeric Excess in Solid-State Mixtures for Pharmacological Formulations [PDF]
Molecules, 2021 The aim of the present work was to develop a green multi-platform methodology for the quantification of l-DOPA in solid-state mixtures by means of MIR and NIR spectroscopy.
Alessandra Biancolillo +3 more
doaj +4 more sources
On the origins of life's homochirality: Inducing enantiomeric excess with spin-polarized electrons. [PDF]
Proc Natl Acad Sci U S A, 2022 Significance Essential biomolecules, like amino acids and sugars, are chiral; they exist in mirror symmetrical pairs named enantiomers. However, modern life selectively uses only one of the enantiomers. The origin of this chiral symmetry breaking remains
Ozturk SF, Sasselov DD.
europepmc +3 more sources
Bipolar Electrochemical Measurement of Enantiomeric Excess with Inherently Chiral Polymer Actuators. [PDF]
ACS Meas Sci Au, 2021 Straightforward enantioselective analytical methods are very important for drug safety, considering that in certain cases one of the two enantiomers of a chiral molecule might be harmful for humans. In this work, we propose a simple system for the direct
Arnaboldi S +5 more
europepmc +2 more sources
Helical springs as a color indicator for determining chirality and enantiomeric excess. [PDF]
Sci Adv, 2021 Helical polymer–based molecular systems allow naked-eye determination of chirality and enantiomeric excess of chiral amines. Chirality plays a key role in the physiological system, because molecular functionalities may drastically alter due to a change ...
Maeda K +10 more
europepmc +2 more sources
Data-Driven Prediction of Circular Dichroism-Based Calibration Curves for the Rapid Screening of Chiral Primary Amine Enantiomeric Excess Values. [PDF]
J Am Chem Soc, 2022 Here, we describe the prediction of the circular dichroism (CD) response of a three-component chiroptical sensor for enantiomeric excess (ee) determination of chiral amines using a multivariate fit to electronic and steric parameters.
Howard JR +4 more
europepmc +2 more sources