Results 11 to 20 of about 81 (67)

Evaluación teórica de las propiedades electrónicas y estructurales que afectan a la conductividad eléctrica en copolímeros de furano-tiofeno

open access: yesRevista Colombiana de Química, 2019
Desde el punto de vista científico y tecnológico ha habido un gran interés en el uso de monosustituyentes de furano y tiofeno como polímeros conductores, debido a sus múltiples aplicaciones como OLED, amplificadores ópticos, nanotecnología, entre otros ...
Jorge Luis Anaya Gil   +4 more
doaj   +1 more source

Understanding the Polar Character Trend in a Series of Diels‐Alder Reactions Using Molecular Quantum Similarity and Chemical Reactivity Descriptors

open access: yesJournal of Quantum Chemistry, Volume 2014, Issue 1, 2014., 2014
In molecular similarity there is a premise “similar molecules tend to behave similarly”; however in the actual quantum similarity field there is no clear methodology to describe the similarity in chemical reactivity, and with this end an analysis of charge‐transfer (CT) processes in a series of Diels‐Alder (DA) reactions between cyclopentadiene (Cp ...
Alejandro Morales-Bayuelo   +2 more
wiley   +1 more source

Theoretical Calculations and Modeling for the Molecular Polarization of Furan and Thiophene under the Action of an Electric Field Using Quantum Similarity

open access: yesJournal of Quantum Chemistry, Volume 2014, Issue 1, 2014., 2014
A theoretical study on the molecular polarization of thiophene and furan under the action of an electric field using Local Quantum Similarity Indexes (LQSI) was performed. This model is based on Hirshfeld partitioning of electron density within the framework of Density Functional Theory (DFT).
Alejandro Morales-Bayuelo   +2 more
wiley   +1 more source

Temas de química cuántica: análisis de su presentación en libros de texto de química general

open access: yesEducación Química, 2018
Los estudiantes universitarios muestran serias dificultades en el aprendizaje de la química. Desde la investigación en enseñanza de las ciencias, se considera que esta problemática es multicausal.
Silvia Ramírez   +2 more
doaj   +1 more source

Mathematical Analysis of a Series of 4‐Acetylamino‐2‐(3,5‐dimethylpyrazol‐1‐yl)‐6‐pyridylpyrimidines: A Simple Way to Relate Quantum Similarity to Local Chemical Reactivity Using the Gaussian Orbitals Localized Theory

open access: yesJournal of Theoretical Chemistry, Volume 2014, Issue 1, 2014., 2014
Molecular Quantum Similarity (MQS) descriptors and Density Functional Theory (DFT) based reactivity descriptors were studied for a series of 4‐Acetylamino‐2‐(3,5‐dimethylpyrazol‐1‐yl)‐6‐pyridylpyrimidines compounds used for Parkinson’s disease (PD) treatment.
Alejandro Morales-Bayuelo   +3 more
wiley   +1 more source

Cuántica por Cuántica: química cuántica con computadoras cuánticas

open access: yesEducación Química, 2011
La superposición de estados y el intrincamiento son características de la naturaleza cuántica que invitan a especular acerca de la construcción, la programación y el funcionamiento de computadoras cuánticas.
Carlos Amador Bedolla   +1 more
doaj   +1 more source

Fundamentos y analogías para entender mejor la espectroscopía de RMN

open access: yesEducación Química, 2022
La Resonancia Magnética Nuclear (RMN) es una técnica espectroscópica utilizada en diversas áreas de las ciencias químicas, biológicas y de la salud.
Mariel Anahí García González   +3 more
doaj   +1 more source

Topological Model on the Inductive Effect in Alkyl Halides Using Local Quantum Similarity and Reactivity Descriptors in the Density Functional Theory

open access: yesJournal of Quantum Chemistry, Volume 2014, Issue 1, 2014., 2014
We present a topological analysis to the inductive effect through steric and electrostatic scales of quantitative convergence. Using the molecular similarity field based in the local guantum similarity (LQS) with the Topo‐Geometrical Superposition Algorithm (TGSA) alignment method and the chemical reactivity in the density function theory (DFT) context,
Alejandro Morales-Bayuelo   +2 more
wiley   +1 more source

Historia de la química cuántica

open access: yesEducación Química, 2015
Se recorren algunos aspectos históricos relevantes de la teoría cuántica (se inicia con algo de MaxPlanck, el modelo atómico de Niels Bohr y el descubrimiento del espín). Se continúa con la aportaciónde la mecánica cuántica de Werner Heisenberg (Mecánica
Andoni Garritz
doaj   +1 more source

Scale Alpha and Beta of Quantitative Convergence and Chemical Reactivity Analysis in Dual Cholinesterase/Monoamine Oxidase Inhibitors for the Alzheimer Disease Treatment Using Density Functional Theory (DFT)

open access: yesJournal of Theoretical Chemistry, Volume 2013, Issue 1, 2013., 2013
Molecular quantum similarity descriptors and Density Functional Theory (DFT) based reactivity descriptors were studied for a series of cholinesterase/monoamine oxidase inhibitors used for the Alzheimer′s disease treatment (AD). This theoretical study is expected to shed some light onto some molecular aspects that could contribute to the knowledge of ...
Alejandro Morales-Bayuelo   +8 more
wiley   +1 more source

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