Results 71 to 80 of about 4,429,443 (158)

Investigation of peptoid chiral stationary phases varied in absolute configuration

open access: yes, 2013
Based on chiral N-(1-phenylethyl) glycines, a series of peptoid chiral stationary phases (CSPs) terminated with achiral alkyl group (diisopropyl, t-butyl or n-butyl) and varied in absolute configuration of selector were investigated with nine axially ...
Yu, Hui   +6 more
core   +1 more source

Organocatalytic Enantioselective Addition of Malonates to Cyclic Imines: A Short Total Synthesis of Tetraponerine T‐1

open access: yesAngewandte Chemie, Volume 138, Issue 38, 14 September 2026.
A stereoselective functionalization method of cyclic imines under mild organocatalytic conditions was developed. Bifunctional cinchona alkaloid catalysts combined with carefully optimized reaction conditions to suppress background reactivity enabled highly enantio‐ and diastereoselective addition reactions of malonates to cyclic imines.
Frederic Kölblin, Helma Wennemers
wiley   +2 more sources

Chiral Bifacial Indacenodithiophene‐Based Hole‐Transport Materials With Chirality‐Induced Spin Selectivity: Chirality‐Spin Polarity Correspondence and Perovskite Passivation

open access: yesSmall, EarlyView.
Homochiral bifacial indacenodithiophene (IDT)‐based hole‐transport materials form amorphous spin‐coated films showing pronounced chirality‐induced spin selectivity (CISS) with spin polarization ≈ 60%, and reveal a robust chirality–spin‐polarity correspondence.
Shuang Li   +3 more
wiley   +1 more source

Interactions Of Chiral Molecules With An (r)‐n‐(3,5‐dinitrobenzoyl) Phenylglycine HPLC Stationary Phase

open access: yes, 1990
Forty different chiral molecules were studied by liquid chromatography with a Pirkle‐type, (R)‐N‐(3,5‐dinitrobenzoyl) phenylglycine (DNBPG), chiral stationary phase column.
Jin, Heng Liang   +3 more
core   +1 more source

Enantioselective Mechanism of the Whelk-O1 Chiral Stationary Phase: A Molecular Dynamics Study [PDF]

open access: yes, 2008
Thesis (Ph.D, Chemistry) -- Queen's University, 2008-10-08 11:54:20.249The Whelk-O1 chiral stationary phase is widely used in liquid and supercritical chromatography for the separation of enantiomers.
Zhao, Chunfeng
core  

The role of absorption in 3D electron diffraction dynamical structure refinement

open access: yesActa Crystallographica Section A, EarlyView.
This work establishes the role of absorption in 3D electron diffraction dynamical refinement, where its inclusion is shown to significantly affect refinement outcomes only in high‐Z materials at thicknesses approaching ξg.The role of absorption in 3D electron diffraction is established through analytical theory, simulation and dynamical refinement.
Benjamin Colmey   +3 more
wiley   +1 more source

Overlooked components of lipid metabolism: Odd‐chain polyunsaturated fatty acids in photosynthetic microorganisms

open access: yesJournal of Phycology, EarlyView.
Abstract This mini‐review examines odd‐carbon polyunsaturated fatty acids (odd‐PUFAs), a rare but biologically significant group of fatty acids in photosynthetic microorganisms. Odd‐PUFAs are straight‐chain fatty acids containing an odd number of carbon atoms and two or more methylene‐interrupted double bonds. They typically account for less than 1% of
Linda Nedbalová   +2 more
wiley   +1 more source

Textile Metamaterials: Design, Fabrication, and Emerging Applications

open access: yesApplied Research, Volume 5, Issue 5, October 2026.
Textile metamaterials combine sub‐wavelength electromagnetic structures with textile architectures, enabling flexible and wearable platforms for wave manipulation. This review highlights their evolution, fabrication strategies, electromagnetic characteristics, and emerging applications, while identifying key challenges and opportunities for next ...
Samanta M. de Holanda   +8 more
wiley   +1 more source

Simultaneous chiral separation using a combinatorial molecular imprinting phase

open access: yes, 2000
Molecular imprinting chiral stationary phase against Cbz-L-Serine (Cbz-L-Ser) and Cbz-L-Alaine (Cbz-L-Ala) were prepared utilizing acrylamide + 2-vinylpyridine as combined basic functional monomers.
Wang, JF   +4 more
core  

Enantioseparation of Cinacalcet, and its Two Related Compounds by HPLC with Self-Made Chiral Stationary Phases and Chiral Mobile Phase Additives

open access: yes, 2019
Background:Cinacalcet is one of the second-generation calcimimetics which consists of a chiral center. The pharmacological effect of R-cinacalcet is 1000 times greater than that of the Scinacalcet.
Chen Qing   +4 more
core   +1 more source

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