Results 11 to 20 of about 1,231 (123)

A Molecular Hybrid 2D/3D Carbon Allotrope: Synthesis of Adamanphene

ChemistryEurope
A new molecular nanographene, adamanphene, has been designed and synthesized by integrating an adamantane core with four peripheral hexa‐peri‐hexabenzocoronene (HBC) units, thus combining structural motifs reminiscent of two carbon allotropes, diamond ...
Marina Iglesias‐Rabadán, Josefina Perles, Jesús Manuel Fernández‐García, Nazario Martín   +3 more
doaj   +2 more sources

Electronic Control of the Scholl Reaction: Selective Synthesis of Spiro vs Helical Nanographenes. [PDF]

Angew Chem Int Ed Engl, 2023
The electronic nature of the starting substrate decides the fate of the reaction: Anthracene‐based polyphenylenes lead to less‐known spiro (R=H) or helical (R=F) nanographenes under mild Scholl conditions, depending upon the substitution pattern on the anthracene core.
Izquierdo-García P, Fernández-García JM, Perles J, Fernández I, Martín N.   +4 more
europepmc   +3 more sources

Nanographene-Based van der Waals Organic Framework With Permanent Porosity. [PDF]

Angew Chem Int Ed Engl
Unlocking record‐breaking porosity in a supramolecular organic framework (SOF). Through the strategic design of a C3‐symmetric nanographene, a robust supramolecular framework is achieved via exclusively weak van der Waals forces. This metal‐free scaffold reaches a benchmark BET surface area of 1108 m2 g−1 –the highest to date for this class–combining ...
Oró A, Turo-Cortés R, Perles J, Costa JS, Fernández-García JM, Martín N.   +5 more
europepmc   +3 more sources

Torsion Effects Beyond the δ Bond and the Role of π Metal-Ligand Interactions. [PDF]

Adv Sci (Weinh)
Recent research challenges established notions in bimetallic paddlewheel compounds. Contrary to prior findings, higher torsion results in shorter metal–metal distances, not longer. This anomaly, attributed to overlooked π metal‐ligand interactions, highlights the importance of the π conjugated nature of the equatorial ligands in the electronic ...
Inchausti A, Mollfulleda R, Swart M, Perles J, Herrero S, Baonza VG, Taravillo M, Lobato Á.   +7 more
europepmc   +2 more sources

Tetrahedraphene: A Csp3‐centered 3D Molecular Nanographene Showing Aggregation‐Induced Emission

Angewandte Chemie, Volume 135, Issue 49, December 4, 2023., 2023
Supramolecular interactions in the solid state (X‐ray) and solution (mixtures of THF/H2O) control the photophysical properties! A singular 3D nanographene (Tetrahedraphene) shows a remarkable aggregation‐induced emission upon water addition changing from blue in solution to vivid yellow colour in the precipitated solid.
Arturo Oró, Fernando Romeo‐Gella, Josefina Perles, Jesús M. Fernández‐García, Inés Corral, Nazario Martín   +5 more
wiley   +2 more sources

Reconstructing formation processes at the Canary Islands indigenous site of Belmaco Cave (La Palma, Spain) through a multiproxy geoarchaeological approach

Geoarchaeology, Volume 38, Issue 6, Page 713-739, November/December 2023., 2023
Abstract The indigenous populations of La Palma (Canary Islands), who arrived on the island from Northwest Africa ca. 2000 years B.P., were predominantly pastoralists. Yet, many aspects of their subsistence economy such as the procurement, management, and use of wild plant resources remain largely unknown.
Enrique Fernández‐Palacios, Margarita Jambrina‐Enríquez, Susan M. Mentzer, Caterina Rodríguez de Vera, Ada Dinckal, Natalia Égüez, Antonio V. Herrera‐Herrera, Juan Francisco Navarro Mederos, Efraín Marrero Salas, Christopher E. Miller, Carolina Mallol   +10 more
wiley   +1 more source

Estudio de la evolución estructural y μestructural del cuasicristal i-Al64Cu23Fe13 sometido a procesos de molienda mecánica

Revista de Investigación de Física, 2012
En el presente trabajo se realiza un estudio sistemático, mediante difracción de rayos X y espectroscopia Mössbauer, de la variación de los parámetros estructurales e hiperfinos durante el proceso de molienda mecánica del cuasicristal icosaédrico ...
M. Pillaca, C. V. Landauro
doaj   +1 more source

Estudio cinético in situ de la fase limonita por difracción de rayos X y espectroscopia u-Raman

Revista de Investigación de Física, 2010
Se realiza un estudio cinético de la fase limonita, FeO(OH)-nH2O, a través de la difracción de rayos X y la espectroscopia u-Raman. El oxido en polvo fue extraído en el distrito de Taraco, provincia de Huancané en la región de Puno de Perú. La difracción
P. R. Palacios, A. G. Bustamante, J. C. González   +2 more
doaj   +1 more source

Análisis microestructural de películas delgadas nano estructuradas de Zn O

Revista de Investigación de Física, 2020
Presentamos los resultados experimentales obtenidos del análisis microestructural de películas delgadas de ZnO con 20, 50 y 100 nm de espesor, crecidas sobre el sustrato de vidrio comercial por pulverización catódica reactiva.
M.A. Urbina-Yarupetán, Juan Gonzalez
doaj   +1 more source

Simulación mediante dinámica molecular de un nanocluster obtenido de la industria minera

Acta Universitaria, 2021
La simulación dinámica molecular es una herramienta de investigación sencilla y lógica que se rige por las ecuaciones de movimiento de Newton. En este caso, es parte de una nueva línea de investigación que explora las interacciones moleculares de un ...
Karen Isela Vargas Rubio, Hiram Medrano Roldán, Damián Reyes Jáquez   +2 more
doaj   +1 more source