Results 1 to 10 of about 267,449 (298)

Chiral sensors

open access: yesTrAC - Trends in Analytical Chemistry, 2019
Chirality has a crucial effect on clinical, chemical and biological research since most bioactive substances possess chirality in the natural world. Thus, new effective methods and/or (nano)materials are required to explain chiral recognition of chiral substances, which always become a hot topic in pharmaceutical and chemo/biological study.
Erhan Zor   +2 more
exaly   +3 more sources

3-Nitroindoles Serving as N-Centered Nucleophiles for Aza-1,6-Michael Addition to para-Quinone Methides

open access: yesMolecules, 2023
An unprecedented N-alkylation of 3-nitroindoles with para-quinone methides was developed for the first time. Using potassium carbonate as the base, a wide range of structurally diverse N-diarylmethylindole derivatives were obtained with moderated to good
Jian-Qiang Zhao   +8 more
doaj   +1 more source

Active nematic multipoles: Flow responses and the dynamics of defects and colloids

open access: yesFrontiers in Physics, 2023
We introduce a general description of localised distortions in active nematics using the framework of active nematic multipoles. We give the Stokesian flows for arbitrary multipoles in terms of differentiation of a fundamental flow response and describe ...
Alexander J. H. Houston   +3 more
doaj   +1 more source

Molecular chirality and chiral parameters [PDF]

open access: yesReviews of Modern Physics, 1999
The fundamental issues of symmetry related to chirality are discussed and applied to simple situations relevant to liquid crystals. We show that any chiral measure of a geometric object is a pseudoscalar (invariant under proper rotations but changing sign under improper rotations) and must involve three-point correlations which only come into play when
Harris, A. Brooks   +2 more
openaire   +3 more sources

CALCULATED VIBRATION FREQUENCIES AND IR ABSORPTION INTENSITIES OF [6] CYCLACENE (CHIRAL) MOLECULE [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2011
.:Density Functional Theory (DFT) of the type (B3LYP) and a Gaussian basis (6-311G) was applied for calculating the vibration frequencies and IR absorption intensities for normal coordinates of the ([6] Cyclacene (Chiral), with (D3d) symmetry) molecule ...
REHAB M. KUBBA
doaj   +1 more source

From Micro to Macro: A Relativistic Treatment of the Chiral Energy Shifts Caused by Static Electromagnetic Effects on Free Electrons

open access: yesEntropy, 2022
Free electron systems are ubiquitous in nature and have demonstrated intriguing effects in their collective interactions with weak electric and magnetic fields, especially in aqueous environments. Starting from the Dirac Hamiltonian, a fully relativistic
Philip Kurian
doaj   +1 more source

Chiral superconductors [PDF]

open access: yesReports on Progress in Physics, 2016
40 pages, 8 figures, short review; added multiple references and minor edits in introductory ...
Kallin, Catherine, Berlinsky, John
openaire   +3 more sources

Directional Plasmonic Excitation by Helical Nanotips

open access: yesNanomaterials, 2021
The phenomenon of coupling between light and surface plasmon polaritons requires specific momentum matching conditions. In the case of a single scattering object on a metallic surface, such as a nanoparticle or a nanohole, the coupling between a ...
Leeju Singh   +3 more
doaj   +1 more source

Chirality ordering of chiral spin liquids [PDF]

open access: yesPhysical Review B, 1992
11 ...
Gaitonde, D. M.   +2 more
openaire   +3 more sources

Amplification of Chirality in Photopatterned 3D Nanostructures of Chiral/Achiral Mixtures

open access: yesApplied Sciences, 2022
The dispersion of a chiral polymer in a polymerizable matrix can amplify the chirality of the material, and a helical conformation of the chiral material within the polymerized SU-8 excessively increased the circular dichroism.
Hongsub Jee   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy