Laura Asturias studied Chemistry and defended her PhD at the University of Burgos. She has joined our group to work on the development of heavy metal sensors for marine environment. Laura will work hand in hand with Pengfei and will be supervised by Marti Gich.
Chiral habit selection on nanostructured epitaxial quartz films
Adrián Carretero-Genevrier,* Martí Gich,* Laura Picas, Clément Sanchez, Juan Rodriguez-Carvajal,*
Faraday Discussions, DOI: 10.1039/C4FD00266K
Understanding the crystallization of enantiomorphically pure systems can be relevant to diverse fields such as the study of the origins of life or the purification of racemates. Here, we report on polycrystalline epitaxial thin films of quartz on Si substrates displaying two distinct types of chiral habits that never coexist in the same film. We combine Atomic Force Microscopy (AFM) analysis and computer-assisted crystallographic calculations to make a detailed study of these habits of quartz. By estimating the surface energies of the observed crystallites we argue that the films are enantiomorphically pure and we briefly outline a possible mechanism to explain the habit and chiral selection in this system.
Crystallization of hollow mesoporous silica nanoparticles
Glenna L. Drisko, Adrian Carretero-Genevrier, Alexandre Perrot, Martí Gich, Jaume Gàzquez, Juan Rodriguez-Carvajal, Luc Favre, David Grosso, Cédric Boissière, Clément Sanchez
ChemComm, DOI: 10.1039/x0xx00000x
Complex 3D nacrostructured nanoparticles are transformed from amorphous silica into pure polycrystalline α-quartz using catalytic quantities of alkaline earths as devitrificants. Walls as thin as 10 nm could be crystallized without losing the architecture of the particles. The roles of cation size and the mol% of incorporated devitrificant on crystallization behavior are studied, with Mg2+, Ca2+, Sr2+ and Ba2+ allproducing pure α-quartz under certain conditions.
Anna and Muling showed the bacterial cellulose paper developed in our group during the last episode of QUÈQUICOM, a science popularization program of the Catalan TV (TV3 and Canal 33).
Anna presented the work “Engineering Iron Oxide Nanoparticles for Angiogenic Therapies” at the THIRD WORKSHOP ON NANOMEDICINE, UABCEI, Laura González presented the poster “EVALUATION OF THE INTERACTION BETWEEN SUPERPARAMAGNETIC IRON OXIDE NANOPARTICLES AND THE MODEL ORGANISM Caenorhabditis elegans” and Simining Yu presented the poster “BOVINE SERUM ALBUMIN MODIFIES THE INTERACTION OF SPIONS WITH BREAST CANCER CELLS”
Nerea Murillo-Cremaes will defend her PhD thesis entitled:
MULTIFUNCTIONAL SILICA-BASED NANOPARTICLES FOR BIOMEDICAL APPLICATIONS
The thesis has been supervised by Dr. Concha Domingo and Dr. Anna Roig.
The thesis jury will be formed by Prof Daniel Ruiz-Molina, Institut Català de Nanociencia i Nanotecnologia, Nanosfun Group, Bellaterra, Catalonia, Prof Vadim Kessler, Swedish University of Agricultural Sciences, Department of Chemistry and Biotechnology, Sweden and Prof Julio San Román, Biomaterials Group, Instituto de Ciencia y Tecnologia de Polimeros (CSIC), Madrid, Spain
This thesis aimed to fabricate hybrid (organic-inorganic) complex materials as drug carriers using supercritical fluids. For that purpose, two main objectives have been addressed: first, evaluation of the potentiality of porous silica-based materials synthesized without using porogenic agents as drug delivery systems; and second, exploiting the utility of SCFs in the synthesis and functionalization of those materials. During the realization of this work, silica-based nanostructured materials have been synthesized, loaded with a model drug, physical and chemically modified on their surface, and their interaction with relevant biological entities and media were investigated.