Publicaciones 2011-2020

@article{RN298,
title = {Synthesis and Photocatalytic Activity of Hybrid Layered Zno(Myristic Acid)/Ag Nanoparticles},
author = { L. Diaz and S. Devis and C. Sotomayor and G. Gonz\'{a}lez and E. Benavente},
url = {/brokenurl#<Go to ISI>://WOS:000381540100003},
doi = {10.1016/j.matlet.2016.05.126},
issn = {0167-577x},
year = {2016},
date = {2016-01-01},
journal = {Materials Letters},
volume = {181},
pages = {8-11},
publisher = {2016 Elsevier B.V.},
abstract = {A new hybrid hetero nanocomposite, consisting of ZnO(myristic acid)/Ag-NPs, has been synthesized. The nanocomposite, made up of single ZnO nanosheets sandwiched between myristic acid self-assembled monolayers was synthesized and decorated with metal nanoparticles by chemical solution and tested in the photodegradation of methylene blue under UV light irradiation. The product displayed significant photocatalytic activity for degradation of the dye, and the activity was improved by a factor of three compared to bulk ZnO under similar conditions. The observed photodegradation efficiency is discussed in terms of the confinement of the semiconductor in the two dimensional structure, the adsorption ability of the organic component and the plasmonic absorption of Ag nanoparticles, which makes them act as electron wells, thus promoting charge separation and a reduced recombination rate.},
keywords = {equilibration, fermi-level irradiation, nanocomposites, nanoflakes, nanorods, nanowires, performance, photocatalysis, semiconductors, size uv, visible-light, zno},
pubstate = {published},
tppubtype = {article}
}

@article{RN267,
title = {Shell-Isolated Nanoparticle-Enhanced Fluorescence (Shinef) of Cdte Quantum Dots},
author = { M. Ramirez-Maureira and C.V. Vargas and A. Riveros and P.J.G. Goulet and I.O. Osorio-Roman},
url = {/brokenurl#<Go to ISI>://WOS:000348263600048},
doi = {10.1016/j.matchemphys.2014.12.003},
issn = {0254-0584},
year = {2015},
date = {2015-01-01},
journal = {Materials Chemistry and Physics},
volume = {151},
pages = {351-356},
publisher = {2014 Elsevier B.V.},
abstract = {We report shell-isolated nanoparticle-enhanced fluorescence (SHINEF) of CdTe quantum dots. Enhanced spectra are obtained after Ag SHINs were spread onto homogenous CdTe quantum dot/polyelectrolyte layer-by-layer (LbL) films on quartz. The thin silica shell of the SHINs effectively isolates the Ag cores, preventing short-range quenching to the metal and enabling plasmon enhancement of the quantum dot fluorescence (ca. 35 fold).},
keywords = {cdse chemical coatings, films, nanostructures, semiconductors, spectrum, surface, synthesis, thin},
pubstate = {published},
tppubtype = {article}
}

@article{RN206,
title = {Magnetic Properties and Crystal Structure of Solid-Solution Cu2mnxfe1-Xsns4 Chalcogenides with Stannite-Type Structure},
author = { F. Lopez-Vergara and A. Gald\'{a}mez and V. Manriquez and P. Barahona and O. Pena},
url = {/brokenurl#<Go to ISI>://WOS:000335983000008},
doi = {10.1002/pssb.201350038},
issn = {0370-1972},
year = {2014},
date = {2014-01-01},
journal = {Physica Status Solidi B-Basic Solid State Physics},
volume = {251},
number = {5},
pages = {958-964},
publisher = {2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.},
abstract = {New solid solutions Cu2MnxFe1-xSnS4 were prepared by direct combination of the corresponding elements at 850 degrees C. The crystal structure of Cu2Mn0.4Fe0.6SnS4 was determined by single-crystal X-ray diffraction. This phase is described in the space group I (4) over bar 2m where each cation is tetrahedrally coordinated to four sulfur anions in a sphalerite-like arrangement. The XRD patterns of the solid solutions Cu2MnxFe1-xSnS4 were fully indexed in the space group I (4) over bar 2m and the values of the cell parameter for all phases obey the usual linear Vegard behavior. A progressive evolution of the magnetic moment in the paramagnetic state is observed when increasing the content of manganese. The negative values of the Curie-Weiss constant, indicate an antiferromagnetic (AF) behavior with AF interactions, weaker by more than one order of magnitude compared to other diluted magnetic semiconductors (DMSs) with zinc-blende or wurzite crystal structure., [GRAPHICS],},
keywords = {chalcogenides, crystal cu2fesns4, kesterite, magnetic model properties, semiconductors, structure, tetrahedra volumes},
pubstate = {published},
tppubtype = {article}
}

@article{RN79,
title = {Hybrid Laminar Organic-Inorganic Semiconducting Nanocomposites},
author = { Z. Lopez-Cabana and D. Navas and E. Benavente and M.A. Santa-Ana and V. Lavayen and G. Gonz\'{a}lez},
url = {/brokenurl#<Go to ISI>://WOS:000302299300014},
doi = {10.1080/15421406.2011.633852},
issn = {1542-1406},
year = {2012},
date = {2012-01-01},
journal = {Molecular Crystals and Liquid Crystals},
volume = {554},
pages = {119-134},
abstract = {Hybrid two-dimensional nanocomposites of transition metal semiconductors based on molybdenum disulfide, zinc oxide, and vanadium pentoxide, in which ultra-thin sheets of the inorganic component are stabilized by insertion into a bilayer of organic amphiphiles, are described. The resulting solids are commensurate species with characteristic stoichiometries, extremely high aspect ratio, and large organic-inorganic interfaces. Synthesis procedures and changes in the properties of the nanocomposites with respect to those of their components, depend on the structural nature of the pristine semiconductor. Derivatives of the laminar semiconductor MoS2 are obtained by quasi-topotactic intercalation of amphiphiles into the layered inorganic matrix, being changes in the properties mainly associated to guest-host charge transfer without altering significantly the electronic structure of the sulfide. In the case of the structurally isotropic ZnO bottom-up sol-gel synthesis procedures, it is necessary to use amphiphiles as templates, producing the two dimensional confinement with significant changes in the band gap of the semiconductor. Vanadium oxide, because of bonding asymmetry, may be easily intercalated. However due to its low laying conduction band, this leads to mixed valence species. Beyond size and dimension induced bang-gap changes, the optical properties of the products, as appreciated in their absorption and emission spectra, are in general qualitatively similar to those of pristine semiconductors.},
keywords = {nanocomposites, semiconductors, v2o5, zno},
pubstate = {published},
tppubtype = {article}
}