Publicaciones 2011-2020

@article{RN367,
title = {Sers Spectrum of Red Dyes in the Mapuche Belts from the Beginning of the Xxth Century},
author = { M. Campos-Vallette and M.J. Rodriguez and M.A. Chapanoff and E. Clavijo and J.S. Gomez-Jeria and A.E. Aliaga and G.P. Jara and F. Celis and C. Paipa and P. Leyton},
url = {/brokenurl#<Go to ISI>://WOS:000405111500008},
doi = {10.1002/jrs.5147},
issn = {0377-0486},
year = {2017},
date = {2017-01-01},
journal = {Journal of Raman Spectroscopy},
volume = {48},
number = {7},
pages = {958-965},
publisher = {2017 John Wiley & Sons, Ltd.},
abstract = {Red dyes in seven belts (trariwe) belonging to the Mapuche culture,
dated as beginning of the XXth century and stored in Museo Regional de la Araucania, Chile, were studied by using ultraviolet-visible, liquid chromatography coupled to mass spectrometry, Raman and Surface Enhanced Raman Scattering spectroscopies. Red dyes were extracted and analysed; the spectral analysis allowed identifying that the principal red dye in five samples is highly consistent with a commercial synthetic aniline, the azopigment PR57. Another monoazopigment, an orange benzimidazolone, was identified in two samples. A molecular model for the PR57/Ag surface interaction supports the idea that the dye mainly exposes to the metal the carboxylate and sulphonate groups; the red azopigment is oriented rather tilted with the two aromatic rings being almost coplanar to the surface. The electrostatic interactions are the main factor of the PR57/Ag layer interaction.},
keywords = {colloids, dyes dyes, electrospray-ionization, enhanced fibers, ionization mapuche mass-spectrometry, nanoparticles, natural nylon organic pigments, raman-scattering, red sers, silver spectroscopy synthetic trariwe, works-of-art},
pubstate = {published},
tppubtype = {article}
}

@article{RN263,
title = {Vibrational Spectroscopy for the Study of Chilean Cultural Heritage},
author = { M. Campos-Vallette and T. Aguayo},
url = {/brokenurl#<Go to ISI>://WOS:000356922100001},
doi = {10.1186/s40494-015-0047-0},
issn = {2050-7445},
year = {2015},
date = {2015-01-01},
journal = {Heritage Science},
volume = {3},
abstract = {Background: Natural and synthetic colouring products along with its associated supporting materials have been studied in several expressions of the Chilean cultural heritage using vibrational spectroscopy. These expressions include archaeological remains as well as works of art., Results: Among the materials studied so far we can count pigments found in archaeological sites from the north of Chile, in plaster (wall paintings) and in polychrome (beams), and dyes mainly related to added components on historic silk textiles. Identification of materials resulted to be relevant to know about Chilean culture through history., Conclusions: The vibrational knowledge obtained contributes to give solid data as a complement to the different information aspects collected by conservation professionals involved in the characterization and conservation procedures of cultural heritage and also it gives us the opportunity to share knowledge and to give value to objects that not always are of the public domain.},
keywords = {art, enhanced ft-raman, identification, iron-oxides, micro-raman, microspectroscopy paintings, pigments, raman-scattering, spectra},
pubstate = {published},
tppubtype = {article}
}

@article{RN212,
title = {A Vibrational Approach for the Study of Historical Weighted and Dyed Silks},
author = { T. Aguayo and M.C. Araya and T.M. Icaza and M. Campos-Vallette},
url = {/brokenurl#<Go to ISI>://WOS:000342254500056},
doi = {10.1016/j.molstruc.2014.07.016},
issn = {0022-2860},
year = {2014},
date = {2014-01-01},
journal = {Journal of Molecular Structure},
volume = {1075},
pages = {471-478},
publisher = {2014 Elsevier B.V.},
abstract = {Samples from six different historic silk objects were studied with the Raman and ATR-IR vibrational techniques. A set of degummed and weighted silks was prepared in order to recognize the vibrational signature associated with the processes used. The spectral information allowed the identification of the weighting process and the dyes used in some of the cases. The different spectra also allowed infer about the deterioration observed in the samples. The silk fibroin displays slight conformational modifications by the weighting process. The degumming process seems to have no chemical effect on the fibroin stability.},
keywords = {atr, bombyx bombyx-mori, conformation, conservation, degradation, deterioration, enhanced infrared-spectroscopy, inks, mori, proteins, raman, raman-scattering, silk, textiles weighted},
pubstate = {published},
tppubtype = {article}
}

@article{RN133,
title = {Fabrication of Copper Nanoparticles: Advances in Synthesis, Morphology Control, and Chemical Stability},
author = { E. Benavente and H. Lozano and G. Gonz\'{a}lez},
url = {/brokenurl#<Go to ISI>://WOS:000327780100002},
doi = {10.2174/1872210511307020002},
issn = {1872-2105},
year = {2013},
date = {2013-01-01},
journal = {Recent Patents on Nanotechnology},
volume = {7},
number = {2},
pages = {108-132},
abstract = {Metal nanoparticles have attracted great interest particularly because of the size dependence of physical and chemical properties and its enormous technological potential. Although most pioneering advancements refers to gold and silver, more recently there is growing interest in nanoparticles of copper, mostly due to its relatively low cost, which could allow the use of these small metal objects in large-scale nanotechnology applications, for example, antiseptics materials and metallic inks. However, the manufacture of copper nanoparticles stable in air with controlled size and shape has been a major challenge because of the relatively high reactivity of this element. Great efforts in getting the basic knowledge and synthesis know-how has gone into finding better ways to produce particles protected against oxidation and self-aggregation under normal conditions. In this review article, we briefly discuss a number of selected papers and recent patents on procedures and other issues related to the fabrication of copper nanoparticles.},
keywords = {assemblies, colloidal copper copper, cu enhanced fabrication irradiation, laser metal micelles, nanocopper, nanoparticle nanoparticles, nanosized particles, polyol process, raman-scattering, reduction, reverse size synthesis, thermal},
pubstate = {published},
tppubtype = {article}
}