Results 11 to 20 of about 4,122 (192)

Interfacial Enrichment and Demetallation of a Zinc Porphyrin in the Ionic Liquid [C₄C₁Im][PF₆]. [PDF]

Chemphyschem
Upon dissolution of zinc porphyrins with long dodecyl chains in the ionic liquid [C4C1Im][PF6], partial [PF6]‐ hydrolysis occurs along spontaneous porphyrin demetallation. Driven by their buoy‐like chains, the free‐base porphyrins extremely enrich at the outermost surface as proven by angle‐resolved X‐ray photoelectron spectroscopy, an interesting ...
Ceccatto A, Williams FJ, Maier F, Steinrück HP.   +3 more
europepmc   +2 more sources

Electron spectroscopy of carbon materials: Experiment and theory [PDF]

, 2006
We present a comparative spectroscopic study of carbon as graphite, diamond and C60 using C1s K-edge electron energy-loss spectroscopy (EELS), X-ray emission spectroscopy, and theoretical modelling.
A A El-Barbary, A V Okotrub, C J Fall, C P Ewels, Gloter A, L G Bulusheva, Lebedev B V, Li S-Y, M I Heggie, O Stephan, Pickard C J, S Trasobares, Yumatov V D   +12 more
core   +3 more sources

Temperature dependence of the magnetic properties in LaMnO_(3+δ) [PDF]

, 2006
Data are presented on the thermal dependence of the hysteretic properties of cationic vacancies including manganite samples of composition LaMnO_(3+δ)(δ=0.05 and 0.12). Our results evidence the presence in both samples of two magnetic phases having ferro-
Arroyo, A., Cortés Gil, R, Cuadrado, R., García, M. A., González Calbet, J. M., Hernando Grande, Antonio, Romero, J.J., Vallet Regí, V.   +7 more
core   +2 more sources

Estudio longitudinal sobre la construcción de conceptos Enlace, solubilidad y conductividad

Educación Química, 2018
La finalidad central de este estudio se orienta hacia la búsqueda de las concepciones previas de los estudiantes de licenciatura en Química de la Facultad de Química de la UNAM, acerca de conceptos cuya adquisición resulta indispensable para comprender ...
Ana E. Domínguez, Fernando Flores C., Leticia Gallegos Cázares, Marta Rodríguez   +3 more
doaj   +1 more source

Correlação entre o conteúdo inorgânico e a polimerização da matriz orgânica das resinas compostas para restaurações dentárias: uma revisão narrativa

RevSALUS, 2022
Introdução: Nos últimos anos, as resinas compostas têm sido melhoradas em termos tecnológicos, permitindo o alcance de melhores prognósticos na medicina dentária.
Rita Fidalgo-Pereira, Daniela M.E. Carpio, Óscar Carvalho, Susana Catarino, Orlanda Torres, Júlio C. M. Souza   +5 more
doaj   +1 more source

Thermally induced interconversions of metal-pyrimidine-4,6-dicarboxylate polymers: A structural, spectroscopic, and magnetic study [PDF]

, 2009
Continuing our work on the structural and magnetic aspects of the one-dimensional (1-D) coordination polymers of the [M(pmdc)(H2O)2]\ub7H2O kind (M Fe, Co, Ni, Cu, Zn; pmdc pyrimidine-4,6-dicarboxylate), we have combined ab initio X-ray powder ...
Barea, Elisa, Beobide, Garikoitz, Castillo, Oscar, Galli, Simona, Luque, Antonio, Masciocchi, Norberto, Navarro, Jorge A. R., Romero, M. Angustias, Sironi, Angelo, Tagliabue, Giulia, Wang, Wenguo   +10 more
core   +1 more source

Recursos per treballar a l’aula la formulació i nomenclatura de química inorgànica

Ciències, 2015
L’article presenta diversos recursos i activitats elaborats per l’autor que permeten treballar la formulació i nomenclatura de química inorgànica a les classes de química d’educació secundària i de batxillerat, seguint les darreres recomanacions ...
José Ángel Hernández Santadaríao
doaj   +1 more source

Synthesis, Characterization, Crystal Structure, and Biological Studies of a Cadmium(II) Complex with a Tridentate Ligand 4′-Chloro-2,2′:6′,2′′-Terpyridine

Bioinorganic Chemistry and Applications, 2011
A new Cd(II) complex with the ligand 4′-chloro-2,2′6′,2′′-terpyridine (Cltpy), [Cd(Cltpy)(I)2], has been synthesized and characterized by CHN elemental analysis, 1H-NMR, 13C-NMR, and IR spectroscopy and structurally analyzed by X-ray single-crystal ...
L. A. Saghatforoush, L. Valencia, F. Chalabian, Sh. Ghammamy   +3 more
doaj   +1 more source

A preliminary study on electrocatalytic reduction of CO2 using FAC-ReI(CO)3(4,4′-dimethyl-2,2′-bipyridyl)((E)-2-((3-amino-pyridin-4-ylimino)-methyl)-4,6-DI-tert-butylphenol))+ complex [PDF]

, 2017
Indexación: Scopus.Several research to explore the possible conversion of CO2 using rhenium(I) tricarbonyl complexes have been reported the last years.
Canales, J.C., Carreño, A., Chávez, I., Manríquez, J.M., Oyarzún, D.   +4 more
core  

2D Co‐Mo‐Hydroxide‐Based Multifunctional Material for the Development of H2‐Based Clean Energy Technologies

Advanced Materials, EarlyView.
2D α‐Co(OH)2 interleaved with Mo species displays an appealing dual functionality for the production and use of green hydrogen.Mo incorporation greatly benefits the electrochemical behaviour in Oxygen Evolution Reaction for H2 production, while the magnetocaloric response at liquid H2 temperature paves the way for alternative cryogenic refrigerants ...
Daniel Muñoz‐Gil, Celia Castillo‐Blas, Dawid Krystian Feler, Isabel Gómez‐Recio, Miguel Tinoco, Ana Querejeta‐Fernández, Rodrigo González‐Prieto, Felipe Gándara, Romualdo Santos Silva Jr, Pilar Ferrer, Carlos Prieto, Luc Lajaunie, José Luis Martinez‐Peña, María Luisa Ruiz‐González, José María González‐Calbet   +14 more
wiley   +1 more source