Results 41 to 50 of about 89,778 (250)

On construction of upper and lower bounds for the HOMO-LUMO spectral gap

open access: yesNumerical Algebra, Control & Optimization, 2019
In this paper we study spectral properties of graphs which are constructed from two given invertible graphs by bridging them over a bipartite graph. We analyze the so-called HOMO-LUMO spectral gap which is the difference between the smallest positive and largest negative eigenvalue of the adjacency matrix of a graph.
Pavlíková, Soña, Ševčovič, Daniel
openaire   +3 more sources

HOMO and LUMO structures of quinolone derivatives in gas and solvent (water) phase.

open access: yes, 2022
HOMO and LUMO structures of quinolone derivatives in gas and solvent (water) phase.
Syeda Abida Ejaz (4816971)   +9 more
core   +1 more source

Investigate the electrical and thermoelectric properties of M@C60 where (M=Co, Ni): A DFT study [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة
Density functional theory combined with nonequivalent greens function was carried out to study the M@C60 single-molecule junctions between two gold electrodes, where M=Co and Ni.
Anhar alfahdawi, Alaa Al-Jobory
doaj   +1 more source

Facile Synthesis of 5-Aryl-N-(pyrazin-2-yl)thiophene-2-carboxamides via Suzuki Cross-Coupling Reactions, Their Electronic and Nonlinear Optical Properties through DFT Calculations

open access: yesMolecules, 2021
Synthesis of 5-aryl-N-(pyrazin-2-yl)thiophene-2-carboxamides (4a–4n) by a Suzuki cross-coupling reaction of 5-bromo-N-(pyrazin-2-yl)thiophene-2-carboxamide (3) with various aryl/heteroaryl boronic acids/pinacol esters was observed in this article.
Gulraiz Ahmad   +9 more
doaj   +1 more source

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian   +6 more
wiley   +1 more source

Theoretical Study on the Use Cyano Acid Derivation as Electron Acceptors in Pelargonidin as Dye Compounds of Sensitized Solar Cells (DSSC)

open access: yesJurnal Kimia Sains dan Aplikasi, 2019
The theoretical study of the use of cyano acid derivatives as electron acceptor groups in pelargonidin as a dye compound in sensitized solar cells (DSSC) was successfully carried out.
Muhamad Imam Muslim, Sudarlin Sudarlin
doaj   +1 more source

A DFT Study on Electronic and Structural Properties of Graphene Nanoribbons [PDF]

open access: yesЖурнал нано- та електронної фізики, 2016
We carry out quantum chemistry calculations on armchair graphene nanoribbons (AGNRs) using density-functional theory. PVE/SVP results for the dependence of energies of the highest occupied (HOMO) and lowest unoccupied molecular orbitals (LUMO) as well as
I.K. Petrushenko
doaj   +1 more source

Electro-physical properties of GaAs nanoscopic clusters

open access: yesChemical Physics Impact, 2022
The electric current through the Cu-GaAs-Cu nanoclusters and their quasi-bandgap widths (HOMO-LUMO differences) are calculated. The ab initio electron propagator theory (Green-Keldysh functions formalism) is implemented for the calculations (that has ...
Aleksey A. Kletsov   +3 more
doaj   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

open access: yesAdvanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng   +7 more
wiley   +1 more source

Some quantum chemical study on the structural properties of three unsymmetrical Schiff base ligands

open access: yesBulletin of the Chemical Society of Ethiopia, 2014
In this studythree Schiff base ligands derived of 2-hydroxybenzaldehyde: H2L1, H2L2 and H2L3 have been subjected to theoretical studies by using density functional theory (DFT) calculations.
I. Sheikhshoaie, V. Saheb, P. Iranmanesh
doaj   +1 more source

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