Publicaciones 2011-2020

@article{RN248,
title = {Cyclodextrin Inclusion Compound Crystals for Growth of Cu-Au Core-Shell Nanoparticles},
author = { N. Silva and E. Arellano and C. Castro and N. Yutronic and E. Lang and B. Chornik and P. Jara},
url = {/brokenurl#<Go to ISI>://WOS:000357572400020},
doi = {10.1007/s10847-015-0531-x},
issn = {1388-3127},
year = {2015},
date = {2015-01-01},
journal = {Journal of Inclusion Phenomena and Macrocyclic Chemistry},
volume = {82},
number = {3-4},
pages = {497-504},
abstract = {The preparation and structural elucidation of the 2 alpha-cyclodextrin/decylamine inclusion compound (IC) by proton nuclear magnetic resonance, rotating frame overhauser effect spectroscopy and powder X-ray diffraction have been achieved. The IC microcrystals were used as a support for the preparation of Au-Cu core-shell nanoparticles by the sputtering method. The coating of copper nanoparticles with gold was verified through anodic stripping voltammetry. The presence of metallic copper and the absence of copper oxides were determined by X-ray photoelectron spectroscopy. These results show that the formation of core-shell Cu-Au by sputtering is an effective approach to prevent the oxidation of Cu particles, leading to potential applications in nanoelectronics.},
keywords = {alpha-cyclodextrin, complexes compound, copper core-shell decylamine, fabrication, gold inclusion nanoparticles, optical-properties, oxide, particles, phase-transfer, scattering},
pubstate = {published},
tppubtype = {article}
}

@article{RN137,
title = {Adhesion of Gold and Silver Nanoparticles onto Urea-Alkylamine Inclusion Compounds},
author = { C. Campos and M. Munoz and L. Barrientos-Poblete and E. Lang and P. Jara and I. Sobrados and N. Yutronic},
url = {/brokenurl#<Go to ISI>://WOS:000314898300018},
doi = {10.1007/s10847-012-0157-1},
issn = {1388-3127},
year = {2013},
date = {2013-01-01},
journal = {Journal of Inclusion Phenomena and Macrocyclic Chemistry},
volume = {75},
number = {1-2},
pages = {165-173},
abstract = {We report the synthesis and characterization of a new series of urea inclusion compounds containing primary alkylamine (octyl, decyl and dodecyl) as guests, as well as the deposition of gold and silver nanoparticles onto the crystalline surface of these complexes. X-ray diffraction confirms the inclusion process of the amine in the urea cavities. The structures determined for the three complexes correspond to a hexagonal channel structure with space group P6(1)22. Alkylamine-urea stoichiometric ratios in all cases satisfy the relationship 1:3n (n = 2 for octylamine and 3 for decylamine and dodecylamine), determined by elemental analysis. The deposition of gold and silver nanoparticles by the magnetron sputtering technique onto microcrystals of the complexes was analyzed by Diffuse Reflectance Spectroscopy, showing characteristic surface plasmon resonance for metal nanoparticles. Transmission electron microscopy demonstrates the presence of metal nanoparticles (MNPs) in a size range between 5 and 60 nm for gold and between 5 and 20 nm for silver, and furthermore, in some cases it shows vestiges of a hexagonal arrangement of the MNPs. X-ray diffraction and IR measurements demonstrate that the basic structure of the matrix remains unchanged after the MNPs adhesion. IR also shows increased broadening and intensity of the characteristic NH2 bending frequencies (1,597 cm(-1)) when the MNPs interact with the inclusion compounds. We conclude that the interactions between the inclusion compounds and metal nanoparticles occurs mainly through the amino groups of the guest molecules that can emerge from the entrance of the inclusion compound cavities attracted by the metallic nanoparticles, in opposition to the restoring van der Waals interactions present inside channels, which increase with increasing chain length of the guest molecules., Schematic representation of urea inclusion compounds containing primary alkylamine (octyl, decyl and dodecyl) as guests and the deposition of gold and silver nanoparticles onto the crystalline surface of these complexes.},
keywords = {alpha-cyclodextrin, amine aspects, compounds, dynamics gold guests, inclusion molecules, nanoparticle, nanoparticles, reduction, silver structural temperature, thiourea, urea x-ray-diffraction},
pubstate = {published},
tppubtype = {article}
}

@article{RN138,
title = {Selective Nanodecoration of Modified Cyclodextrin Crystals with Gold Nanorods},
author = { B. Herrera and C. Adura and N. Yutronic and M.J. Kogan and P. Jara},
url = {/brokenurl#<Go to ISI>://WOS:000310763900006},
doi = {10.1016/j.jcis.2012.08.027},
issn = {0021-9797},
year = {2013},
date = {2013-01-01},
journal = {Journal of Colloid and Interface Science},
volume = {389},
pages = {42-45},
publisher = {2012 Elsevier Inc.},
abstract = {Gold nanorods (AuNRs) stabilized by cetyltrimethylammonium bromide (CTAB) were deposited onto crystals of alpha-cyclodextrin (alpha-CD) inclusion compounds (ICs) that contained octanethiol (OT) as guest molecules. The nanodecoration was produced specifically at the 001 crystal planes through interaction between the -SH groups of the ICs and the AuNRs.},
keywords = {alpha-cyclodextrin, cationic complex compound, compounds, cyclodextrin, deposition, gold inclusion nanodecoration, nanoparticles, nanorods, surfactants},
pubstate = {published},
tppubtype = {article}
}