Results 31 to 40 of about 2,071,992 (274)

A Theoretical Analysis of the Differential Chemical Reaction Results Caused by Chirality Induction

open access: yesMolecules, 2023
The theory of electron spin has been proposed for a century, but the study of quantum effects in biological molecules is still in its infancy. Chirality-induced spin selectivity (CISS) is a very modern theory that can explain many biochemical phenomena ...
Feng-Yu Zhang   +5 more
doaj   +1 more source

Fully Automated Quantum‐Chemistry‐Based Computation of Spin–Spin‐Coupled Nuclear Magnetic Resonance Spectra

open access: yesAngewandte Chemie, 2017
We present a composite procedure for the quantum‐chemical computation of spin–spin‐coupled 1H NMR spectra for general, flexible molecules in solution that is based on four main steps, namely conformer/rotamer ensemble (CRE) generation by the fast tight ...
S. Grimme   +7 more
semanticscholar   +1 more source

Simultaneous Voltammetric Determination of Ascorbic Acid, Dopamine and Uric Acid by the Poly(alizarin yellow R)/GCE

open access: yesInternational Journal of Electrochemical Science, 2019
A glassy carbon electrode (GCE) modified with the poly(alizarin yellow R) (PAYR) film was prepared by an electropolymerization method. Ascorbic acid (AA), dopamine (DA) and uric acid (UA) were determined by this electrode, and its electrocatalytic ...
Li Zhang   +6 more
doaj   +1 more source

A Sensing Interface Based on 3D CS-Au NPs/hPPy for Electrochemical Detection of Carcinoembryonic Antigen

open access: yesInternational Journal of Electrochemical Science, 2021
Carcinoembryonic antigen (CEA), a major tumor marker, has been applied to clinical screening and early diagnosis. Herein, an electrochemical detection platform using three-dimensional horn-like PPy (hPPy) and CS-Au nanoparticles micro/nanostructure as ...
Shangshang Ma   +6 more
doaj   +1 more source

From Free Radicals and Spin-Chemistry Over Spin-Dynamics and Hyperpolarization to Biology and Materials Science [PDF]

open access: yes, 2017
This special issue of ZPC is dedicated to the 80th anniversary of Kev Salikhov, a prominent scientist who has made seminal contributions to spin chemistry, chemical kinetics, spin hyperpolarization and magnetic resonance.
Buntkowsky, Gerd   +2 more
core   +1 more source

Open shells in reduced-density-matrix-functional theory

open access: yes, 2005
Reduced-density-matrix-functional theory is applied to open-shell systems. We introduce a spin-restricted formulation by appropriately expressing approximate correlation-energy functionals in terms of spin-dependent occupation numbers and spin ...
A. M. K. Müller   +3 more
core   +1 more source

Accelerating an integrative view of quantum biology

open access: yesFrontiers in Physiology
Quantum biology studies span multiple disciplines including physics, engineering, and biology with the goal of understanding the quantum underpinnings of living systems. Recent findings have brought wide attention to the role of quantum mechanisms in the
Luke J. Kinsey   +2 more
doaj   +1 more source

Spin Photochemistry: Electron Spin Multiplicity as a Tool for Reactivity and Selectivity Control

open access: yesCHIMIA, 2021
Spin chemistry involving small organic molecules without heavy atoms is highly sensitive to spin-orbit-coupling (SOC) modulating biradical conformation as well as hyperfine coupling (HFC) modulating magnetic isotope interactions. Several easily available
Axel G. Griesbeck, Seyma Bozkus
doaj   +1 more source

Zeeman spin-orbit coupling in antiferromagnetic conductors

open access: yes, 2018
This article is a brief review of Zeeman spin-orbit coupling, arising in a low-carrier commensurate N\'eel antiferromagnet subject to magnetic field. The field tends to lift the degeneracy of the electron spectrum.
Ramazashvili, Revaz
core   +3 more sources

Effect of poly(ethylene glycol)-based cross-linker length on the physicochemical and rheological properties of hyaluronic acid hydrogels potentially applicable in the biomedical field

open access: yesCarbohydrate Polymer Technologies and Applications
The development of safe and effective hyaluronic acid-based materials is one of the main research focuses for biomedical applications. However, so far, an investigation of the influence of the cross-linker chain length on the physicochemical, mechanical,
Fabiana Cordella   +11 more
doaj   +1 more source

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