Results 131 to 140 of about 1,860,621 (344)

When Dihedral Angles Mask Denticity in Molecular Conductance

open access: yesChemPhysChem, EarlyView.
This study tests whether higher molecule–electrode denticity increases conductance in single‐molecule junctions. Using nonequilibrium Green's function technique in conjunction with density functional theory simulations and mechanically controlled break‐junction experiments on a tetradentate N‐heterohexacene, it is found that conductance depends mainly ...
Kevin Batzinger   +8 more
wiley   +1 more source

Ligand Field Tuning of Photoreactivity: Contrasting Low‐Spin and High‐Spin Fe(III)‐Azido Complexes

open access: yesChemPhotoChem, EarlyView.
Why do near‐identical Fe(III)‐azido complexes exhibit different photoreactivity profiles? Linking spin states and key normal modes to wavelength‐dependent photoreductive and photooxidative reaction paths shows how supposedly minor structural changes influence the spin ground state, in turn dictating the photoreactivity profile of the complexes.
Frederik Scherz, Vera Krewald
wiley   +1 more source

Free Energies of Reaction for Aqueous Glycine Condensation Chemistry at Extreme Temperatures

open access: yesGeophysical Monograph Series, Page 271-283., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Matthew Kroonblawd, Nir Goldman
wiley  

+1 more source

Hamiltonian paths on 3-polytopes

open access: yesJournal of Combinatorial Theory, Series B, 1972
AbstractThe smallest number of vertices, edges, or faces of any 3-polytope with no Hamiltonian path is determined. Similar results are found for simplicial polytopes with no Hamiltonian path.
openaire   +2 more sources

Spin‐Crossover Modulated Luminescence in Materials and Molecular Complexes

open access: yesHelvetica Chimica Acta, EarlyView.
The synergistic coupling of spin‐crossover and luminescent properties holds great promise for the development of multifunctional and stimuli‐responsive molecular materials. This contribution provides a comprehensive overview of the field, surveying the possible coupling mechanisms, the various synthetic strategies and their potential applicability, as ...
Charlotte Egger, Claude Piguet
wiley   +1 more source

Matching Lagrangian and Hamiltonian simulations in (2+1)-dimensional U(1) gauge theory

open access: yesEuropean Physical Journal C: Particles and Fields
At finite lattice spacing, Lagrangian and Hamiltonian predictions differ due to discretization effects. In the Hamiltonian limit, i.e. at vanishing temporal lattice spacing $$a_t$$ a t , the path integral approach in the Lagrangian formalism reproduces ...
C. F. Groß   +6 more
doaj   +1 more source

Antidirected Hamiltonian paths in tournaments

open access: yesJournal of Combinatorial Theory, Series B, 1972
AbstractIn this paper we present a short proof of Grünbaum's theorem concerning the existence of antidirected Hamiltonian (ADH) paths in tournaments. We also prove that, in every tournament Tn with n ≥ 12, there is an ADH path starting at any vertex.
openaire   +1 more source

Engineering Topological Phases with a Traveling‐Wave Spacetime Modulation

open access: yesLaser &Photonics Reviews, EarlyView.
Time‐varying systems have garnered considerable attention due to their unique potential in manipulating electromagnetic waves. Here, a novel class of topological spacetime crystals with a traveling‐wave modulation is introduced. By manipulating material anisotropy, one can engineer light angular momentum and non‐trivial topological phases characterized
João C. Serra, Mário G. Silveirinha
wiley   +1 more source

Antidirected Hamiltonian paths in tournaments

open access: yesJournal of Combinatorial Theory, Series B, 1971
AbstractIt is well known that every tournament has a directed Hamiltonian path. A similar result is established concerning the existence of antidirected Hamiltonian paths in tournaments.
openaire   +2 more sources

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