Results 1 to 10 of about 869,565 (352)
A study of the morphology, dynamics, and folding pathways of ring polymers with supramolecular topological constraints using molecular simulation and nonlinear manifold learning [PDF]
, 2017 Ring polymers are prevalent in natural and engineered systems, including circular bacterial DNA, crown ethers for cation chelation, and mechanical nanoswitches. The morphology and dynamics of ring polymers are governed by the chemistry and degree of polymerization of the ring, and intramolecular and supramolecular topological constraints such as knots ...
Ferguson, Andrew, Wang, Jiang
arxiv +3 more sources
Detecting Majorana modes through Josephson junction ring-quantum dot hybrid architectures [PDF]
, 2017 Unequivocal signatures of Majorana zero energy modes in condensed matter systems and manipulation of the associated electron parity states are highly sought after for fundamental reasons as well as for the prospect of topological quantum computing.
Pereg-Barnea, T. +2 more
arxiv +3 more sources
Imaging the Photochemical Ring-Opening of 1,3-Cyclohexadiene by Ultrafast Electron Diffraction [PDF]
, 2018 The ultrafast photoinduced ring-opening of 1,3-cyclohexadiene constitutes a textbook example of electrocyclic reactions in organic chemistry and a model for photobiological reactions in vitamin D synthesis. Here, we present direct and unambiguous observation of the ring-opening reaction path on the femtosecond timescale and sub-{\AA}ngstr\"om length ...
Centurion, M. +22 more
arxiv +5 more sources
Supersymmetry and the Hartmann Potential of Theoretical Chemistry [PDF]
Theoretica Chimica Acta, volume 94, July, 1996, page 53, 1996 The ring-shaped Hartmann potential $ V = \eta \sigma^{2} \epsilon_{0} \left( \frac{2 a_{0}}{r} - \frac{\eta a_{0}^{2}}{r^{2} sin^{2} \theta} \right) $ was introduced in quantum chemistry to describe ring-shaped molecules like benzene. In this article, the supersymmetric features of the Hartmann potential are discussed.
Blado, Gardo Garnet
arxiv +4 more sources
Mesomerism, Ring & Substituent Effects, A Computational Chemistry Experiments [PDF]
, 2016 International audienceThe introduction of computational chemistry experiments for undergraduate students in sciences can really facilitate knowledge acquisition. It can make consistent various concepts in chemistry without a lengthy experimental protocol
Carissan, Yannick +4 more
core +6 more sources
Silabenzene Incorporated Covalent Organic Frameworks [PDF]
Nature Chemistry 15 (2023) 136, 2021 Covalent organic frameworks (COFs) are a promising material for various applications such as gas storage/separation, catalysis, and energy storage, besides offering a confined space for chemical reaction. The introduction of unconventional elements into their frame structures and expanding their structural scope remains a major challenge in COF ...
arxiv +1 more source
Inorganics, 2023 We combine operando diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) with on-line mass spectrometry (MS) to study the correlation between the oxidation state of titania-supported IrO2 catalysts (IrO2@TiO2) and their catalytic activity
Phillip Timmer +3 more
doaj +1 more source
Catalytic Cascade Reactions Inspired by Polyketide Biosynthesis
CHIMIA, 2020 Aldol reactions belong to the most important methods for carbon–carbon bond formation and are also involved in one of the most astonishing biosynthetic processes: the biosynthesis of polyketides governed by an extraordinarily sophisticated enzymatic ...
Daniel Moser +6 more
doaj +1 more source