Results 11 to 20 of about 213,564 (167)

Experimental and Theoretical Insights into the Optical Properties and Intermolecular Interactions in Push‐Pull Bromide Salts

ChemistryOpen, 2019
Experimental and theoretical insights into the nature of intermolecular interactions and their effect on optical properties of 1‐allyl‐4‐(1‐cyano‐2‐(4‐dialkylaminophenyl)vinyl)pyridin‐1‐ium bromide salts (I and II) are reported.
Dr. Perumal Venkatesan, Dr. Margarita Cerón, Dr. Enrique Pérez‐Gutiérrez, Armando E. Castillo, Dr. Subbiah Thamotharan, Fernando Robles, Dr. Maxime A. Siegler, Prof. M. Judith Percino   +7 more
doaj   +2 more sources

Weak noncovalent interactions in 1,2,4-triazole-3-thione-linked adamantyl derivatives: experimental and computational insights into their potential as antiproliferative agents [PDF]

Frontiers in Chemistry
The synthesis, single-crystal X-ray structures, and antiproliferative activity of five adamantyl-linked 1,2,4-triazole-3-thione derivatives are presented.
Lamya H. Al-Wahaibi, Annesha Chakraborty, Hanan M. Hassan, Mohammed S. M. Abdelbaky, Santiago Garcia-Granda, Ali A. El-Emam, M. Judith Percino, Subbiah Thamotharan   +7 more
doaj   +2 more sources

Implementación de un laboratorio de química computacional para el apoyo del aprendizaje de la química

Educación Química
Entender el impacto del uso de laboratorios sobre el aprendizaje es fundamental al momento de planificar actividades experimentales que propicien el aprendizaje de nuestros estudiantes.
Rubén Ignacio Arancibia-Olivares, Germán Barriga-González, José Muñoz-Espinoza, Gabriela Cárdenas-Cerda   +3 more
doaj   +2 more sources

Los estrógenos también podrían ser una alternativa antioxidante

Educación Química
En este artículo de divulgación se presenta información sobre las especies reactivas de oxígeno, el estrés oxidativo y su relación con un gran número de enfermedades ampliamente distribuidas. Además, se muestra que los estrógenos son moléculas endógenas
Manuel Eusebio Medina López, María Fernanda Hernández Hernández   +1 more
doaj   +2 more sources

Photostability and Dynamic Helical Behavior in Chiral Poly(phenylacetylene)s with a Preferred Screw-Sense. [PDF]

Angew Chem Int Ed Engl, 2022
Photostability of poly(phenylacetylene) (PPA) derivatives is closely linked to the dynamic helical behavior of the polyene scaffold. Quasi‐static PPAs are stable under light exposure, while a photochemical electrocyclization is produced in dynamic PPAs. Abstract Helical polymers such as poly(phenylacetylene)s (PPAs) are interesting materials due to the
Rey-Tarrío F, Guisán-Ceinos S, Cuerva JM, Miguel D, Ribagorda M, Quiñoá E, Freire F.   +6 more
europepmc   +3 more sources

Editorial: Noncovalent interactions in N/O heterocycles [PDF]

Frontiers in Chemistry
Subbiah Thamotharan, M. Judith Percino, Diego Mauricio Gil   +2 more
doaj   +2 more sources

Consecutive Complex Aggregation Pathway in Covalent Helical Polymer-Metal Complexes: Nanospheres with Controlled P/M Macroscopic Chirality. [PDF]

Small
Helical polymer‐metal complex nanospheres following a consecutive aggregation pathway allow the creation of chiral polymeric particles capable of memorizing their macroscopic chirality and the properties associated with it, such as circularly polarized luminescence (CPL) emission. Abstract Kinetically trapped and thermodynamic nanospheres with opposite
Tarrío JJ, Hermida B, Rodríguez R, Crassous J, Quiñoá E, Freire F.   +5 more
europepmc   +2 more sources

Solution and Solid-State Photophysical Properties of Positional Isomeric Acrylonitrile Derivatives with Core Pyridine and Phenyl Moieties: Experimental and DFT Studies

Molecules, 2021
The compounds I (Z)-2-(phenyl)-3-(2,4,5-trimethoxyphenyl)acrylonitrile with one side (2,4,5-MeO-), one symmetrical (2Z,2′Z)-2,2′-(1,4-phenylene)bis(3-(2,4,5-trimethoxyphenyl)acrylonitrile), II (both sides with (2,4,5-MeO-), and three positional isomers ...
Armando Castillo, Paulina Ceballos, Pilar Santos, Margarita Cerón, Perumal Venkatesan, Enrique Pérez-Gutiérrez, Martha Sosa-Rivadeneyra, Subbiah Thamotharan, Maxime A. Siegler, María Judith Percino   +9 more
doaj   +1 more source

Los materiales ópticos como instrumento para determinar la materia orgánica presente en el agua

Brazilian Journal of Animal and Environmental Research, 2023
Este estudio reporta la síntesis y caracterización espectroscópica de vidrios PbO-BiO2- Ga2O3 con nanopartículas de plata e iones de Nd3, y la absorción característica del Ftalato de Potasio (sustancia patrón cuyo consumo de oxigeno se relaciona con la ...
Luz Patricia Naranjo, Alexander Cortés, J. Céspedes   +2 more
semanticscholar   +1 more source

Dissymmetric Chiral Poly(diphenylacetylene)s: Secondary Structure Elucidation and Dynamic Luminescence

Angewandte Chemie International Edition, Volume 61, Issue 9, February 21, 2022., 2022
The 3D helix adopted by a non‐symmetric substituted poly(diphenylacetylene) (PDPA) is elucidated, and its ability to self‐assemble into nanospheres or fiber‐like structures under the right conditions is also demonstrated. Moreover, by conformational changes in the pendant group it is possible to produce a helix inversion in the PDPA and create a ...
Juan José Tarrío, Rafael Rodríguez, Berta Fernández, Emilio Quiñoá, Félix Freire   +4 more
wiley   +1 more source