Results 41 to 50 of about 252,292 (239)

Mass spectrometry detection of basic drugs in fast chiral analyses with vancomycin stationary phases

open access: yesJournal of Pharmaceutical Analysis, 2018
Current trends in chiral analysis of pharmaceutical drugs are focused on faster separations and higher separation efficiencies. Core-shell or superficially porous particles (SPP) based chiral stationary phases (CSPs) provide reduced analysis times while ...
Hongyue Guo   +3 more
doaj   +1 more source

The Separation of Cannabinoids on Sub-2 µm Immobilized Polysaccharide Chiral Stationary Phases

open access: yesPharmaceuticals, 2021
The increased use and applicability of Cannabis and Cannabis-derived products has skyrocketed over the last 5 years. With more and more governing bodies moving toward medical and recreational legalization, the need for robust and reliable analytical ...
Takafumi Onishi, Weston J. Umstead
doaj   +1 more source

Acknowledgment to Reviewers of Separations in 2020

open access: yes, 2021
Peer review is the driving force of journal development, and reviewers are gatekeepers who ensure that Separations maintains its standards for the high quality of its published papers [...
Separations Editorial Office Separations Editorial Office
core   +1 more source

Nanoconfinement‐Induced Second‐Harmonic Circular Dichroism via Chirality–Ferroelectric Coupling

open access: yesAdvanced Functional Materials, EarlyView.
Nanoconfinement of a ferroelectric nematic liquid crystal within a chiral nanoporous sponge yields an enhanced second‐harmonic generation circular dichroism (|gSHG–CD| ≈ 1.1). Polarization‐resolved analysis suggests an additional magnetic‐dipole‐associated nonlinear contribution under nanoconfinement, highlighting chirality–ferroelectric coupling as a ...
Jae‐Jin Lee   +5 more
wiley   +1 more source

Modal Analysis of Light Propagation, Polarization and Diffraction by Cholesteric Liquid Crystal Layers

open access: yesAdvanced Functional Materials, EarlyView.
The analysis of optical eigenmodes in chiral liquid crystal with perpendicular or tilted helical axis, and their correspondence with the external medium, leads to an intuitive understanding of the angle and wavelength dependency of transmissive and reflective diffraction.
Ke Xu   +5 more
wiley   +1 more source

Constructions of chiral polytopes of small rank [PDF]

open access: yes, 2011
An abstract polytope of rank n is said to be chiral if its automorphism group has precisely two orbits on the flags, such that adjacent flags belong to distinct orbits. The present paper describes a general method for deriving new finite chiral polytopes
Egon Schulte   +5 more
core   +1 more source

Thermoresponsive Liquid Crystalline Polymer Coatings Programmed by Field‐Induced Topological Defects for Tunable Optical and Topographical Responses

open access: yesAdvanced Functional Materials, EarlyView.
Resonant standing waves generate large‐area lattices of liquid‐crystal topological defects that are permanently encoded into polymer coatings by photopolymerization. The preserved director architecture produces thermally reconfigurable surface topographies while maintaining programmable optical functionality, demonstrating a scalable strategy for ...
Jacques A. Peixoto   +6 more
wiley   +1 more source

Anisotropic Phonon Dynamics and Directional Transport in Actinide Van der Waals Semiconductor Uranium Triselenide

open access: yesAdvanced Functional Materials, EarlyView.
USe3 is introduced as an actinide van der Waals semiconductor that mirrors the quasi‐one‐dimensional physics of transition‐metal trichalcogenides. Polarization‐resolved Raman spectroscopy on exfoliated flakes maps strong in‐plane phonon anisotropy and strain‐tunable mode shifts.
Aljoscha Söll   +17 more
wiley   +1 more source

Self‐Assembled Hybrid Cell‐Enzyme Materials for Gas‐Powered Biocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
Integrating living cells with programmable enzyme networks enables hybrid materials that convert gaseous feedstocks into chemical reducing power. These gas‐powered catalytic beads operate as modular, recyclable platforms for adaptive biocatalysis and sustainable synthesis.
Marius Stoeckle   +2 more
wiley   +1 more source

Separations 2019 Best Paper Award

open access: yes, 2020
The Editors of Separations have established the Best Paper Award to acknowledge the authors’ support and recognize the most outstanding articles published in the journal [...
Separations Editorial Office Separations Editorial Office
core   +1 more source

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