Results 11 to 20 of about 3,035 (135)

Impacts of Quinone Structure on Trade-Offs Between Redox Potential and CO<sub>2</sub> Binding Strength. [PDF]

open access: yesChemphyschem
Quinones are well‐studied and promising candidates for redox‐active sorbents in electrochemical CO2 capture and storage (ECCS). Unfortunately, reactivity with O2 is a persisting issue in the use of quinones. While attempts have been made to tune the redox‐potentials of quinones to avoid this, quinones which are more tolerant to the presence of O2, are ...
Taylor JS, Forse AC, Thom AJW.
europepmc   +2 more sources

Zhang–Zhang Polynomials of Multiple Zigzag Chains Revisited: A Connection with the John–Sachs Theorem

open access: yesMolecules, 2021
Multiple zigzag chains Zm,n of length n and width m constitute an important class of regular graphene flakes of rectangular shape. The physical and chemical properties of these basic pericondensed benzenoids can be related to their various topological ...
Henryk A. Witek
doaj   +1 more source

A wave-mechanical treatment of the Mills-Nixon effect [PDF]

open access: yes, 1935
The Mills-Nixon effect has been examined by a very simple wave-mechanical treatment. This has led to the conclusion that the effect of saturated side rings upon the ratio of the coefficients of the wave-functions of the two Kekulé structures is ...
Pauling, L., Sutton, L. E.
core   +1 more source

The electronic structure of benzene from a tiling of the correlated 126-dimensional wavefunction

open access: yesNature Communications, 2020
The electronic structure of benzene has been a test bed for competing theories along the years. Here the authors show via quantum chemistry calculations that the wavefunction of benzene can be partitioned into tiles which show that the two electron spins
Yu Liu   +3 more
doaj   +1 more source

Observation of nonlinear disclination states

open access: yesLight: Science & Applications, 2023
Introduction of controllable deformations into periodic materials that lead to disclinations in their structure opens novel routes for construction of higher-order topological insulators hosting topological states at disclinations.
Boquan Ren   +12 more
doaj   +1 more source

The effect of atomic-scale defects and dopants on graphene electronic structure [PDF]

open access: yes, 2011
Graphene, being one-atom thick, is extremely sensitive to the presence of adsorbed atoms and molecules and, more generally, to defects such as vacancies, holes and/or substitutional dopants.
Casolo, Simone   +2 more
core   +3 more sources

Uniaxial Strain Induced Topological Phase Transition in Bismuth-Tellurohalide-Graphene Heterostructures [PDF]

open access: yes, 2019
We explore the electronic structure and topological phase diagram of heterostructures formed of graphene and ternary bismuth tellurohalide layers. We show that mechanical strain inherently present in fabricated samples could induce a topological phase ...
Koltai, János   +3 more
core   +2 more sources

Explaining Creativity [PDF]

open access: yes, 2018
Creativity has often been declared, especially by philosophers, as the last frontier of science. The assumption is that it will defy explanation forever.
Kronfeldner, Maria
core   +2 more sources

Perimeter ring currents in benzenoids from Pauling bond orders [PDF]

open access: yes, 2016
It is shown that the ring currents in perimeter hexagonal rings of Kekulean benzenoids, as estimated within the Randić conjugated-circuit model, can be calculated directly without tedious pairwise comparison of Kekulé structures or Kekulé counting for ...
Bird, W.H.   +3 more
core   +1 more source

A simple mathematical model for the effect of benzoannelation on cyclic conjugation [PDF]

open access: yes, 2011
In a series of earlier studies, it was established that benzoannelation in the angular (resp. linear) position relative to a ring R of a polycyclic conjugated π-electron system, increases (resp.
Balaban Aexanru T., Gutman Ivan
core   +1 more source

Home - About - Disclaimer - Privacy