Publicaciones 2011-2020

@article{RN136,
title = {Large Directional Conductivity Change in Chemically Stable Layered Thin Films of Vanadium Oxide and a 1d Metal Complex},
author = { C. Glynn and D. Thompson and J. Paez and G. Collins and E. Benavente and V. Lavayen and N. Yutronic and J.D. Holmes and G. Gonz\'{a}lez and C. O'dwyer},
url = {/brokenurl#<Go to ISI>://WOS:000323578000011},
doi = {10.1039/c3tc31104j},
issn = {2050-7526},
year = {2013},
date = {2013-01-01},
journal = {Journal of Materials Chemistry C},
volume = {1},
number = {36},
pages = {5675-5684},
abstract = {Electroactive hybrid and layered oxides and related materials where the inorganic phase is the host, offering the conductivity characteristics of semiconductors, have been used in thin film transistors and related electronic devices where the host-guest interaction offered conductivity with improved processability. We describe the synthesis and characterization of a nanocomposite that shows large conductivity anisotropy when deposited as a thin film. We prepared the material by inserting quasi 1-dimensional potassium tetracyanoplatinate metal complexes with insulating electrical properties in between stacked nanosheets of vanadium oxide xerogels. Detailed structural and compositional analysis using transmission electron microscopy and X-ray photoelectron spectroscopy confirms that the hybrid material forms from a topotactic reaction and the framework of the layered host oxide structure is maintained. The hybrid film demonstrates a similar to 1000-fold conductivity change between transport parallel and perpendicular to the film at room temperature. Temperature dependent transport measurements confirm Ohmic conduction perpendicular to the stack and small polaron hopping conduction parallel to the layering direction of the film. The conductivity anisotropy and simple synthesis demonstrate that nanostructured layered hybrids can provide alternative materials for thin film complementary logic and resistive memory.},
keywords = {charge hybrid intercalation, low-temperature, materials, mechanism, nanocomposites, nanostructures, sol-gel, transport, v2o5},
pubstate = {published},
tppubtype = {article}
}

@article{RN87,
title = {Sol-Gel Incorporation of Organometallic Compounds into Silica: Useful Precursors to Metallic Nanostructured Materials},
author = { C. Diaz and M.L. Valenzuela and D. Garrido and P. Aguirre},
url = {/brokenurl#<Go to ISI>://WOS:000305169800021},
issn = {0717-9707},
year = {2012},
date = {2012-01-01},
journal = {Journal of the Chilean Chemical Society},
volume = {57},
number = {2},
pages = {1155-1162},
abstract = {Inclusion of the organometallic MLn = [HOC5H4N center dot Cp2TiCl][PF6] (I), HOC5H4N center dot W(CO)(5) (2), HOC5H4N center dot Mo(CO)(5) (3), [HOC6H4CH2CN center dot Cp2TiCl][PF6] (4), HOC6H4CH2CN center dot W(CO)(5) (5) and HOC6H4CH2CN center dot Mo(CO)(5) (6) into amorphous silica using the gelator precursor TEOS and N3P3N-H[CH2](3)Si[OEt](3)(6) afford the gels (MLn)(SiO2)(n). The inorganic-organic hybrid nanocomposites were pyrolyzed under air at 800 degrees C to give nanostructured metal oxides and/or metal pyrophosphates (phosphates) included in the silica matrices. The morphology of the monolithic nanocomposites exhibited a strong dependence on the gel precursor used being mainly laminar for those prepared using N2P3NH[CH2](3)Si[OEt](3) as gelator. TEm images show different shape and size such as circular nanoparticles, nanocables and agglomerates in some cases with sizes of 20 nm for the circular nanostructures, and diameter about 25 nm for the nanocables.},
keywords = {bridged magnetic-properties, materials, matrix, mesoporous molecular nanoclusters nanocomposites, nanoparticles, nanostructured, nanowires, organic-inorganic polysilsesquioxanes, precursors, pyrophosphates, silica, sol-gel, source thermolytic transformation},
pubstate = {published},
tppubtype = {article}
}