Mittwoch, 22. November 2017, 15:00 - 16:30 iCal
Dr. Maria Ibáñez Sabaté /
ETH Zürich, ab 2018 IST Austria
„Functional Nanomaterials from the Bottom-up Assembly of Solution-Processed Nanoparticles”
Seminarraum 2 der Fakultät für Chemie
Währinger Straße 42, 1090 Wien
Vortrag
Functional Nanomaterials from the Bottom-up Assembly of Solution-Processed Nanoparticles
Nanocrystals can be envisioned as artificial atoms to build-up materials from. Colloidal synthetic routes are capable to yield nanocrystals with precise control of size, shape, crystalline phase and composition, thus allowing to accurately engineer such artificial atoms. Therefore, a new generation of complex materials with nanoscale control can be created in which components and functionalities can be defined in a predictable manner. Beyond nanocrystal design, another key player on the building-up process is the nanocrystal surface. Most synthetic strategies developed render nanocrystal with organic molecules coordinated at their surfaces (ligands). By locally controlling surface energy and charge is possi-ble to exchange native ligands by other organic or inorganic molecules that may incorporate foreign atom/ions at each surface site. The possibility to modify nanocrystal surface chemistry opens a new degree of freedom to tune final nano-material properties, defining the surface ligand as a building block on its own. Last but not least, the functional proper-ties are as well determined by the nanocrystals organization, interconnection, packing density and relative crystal orien-tation in the final nanomaterial. Herein, we will focus on the synthesis of nanoparticles with precisely engineered com-position and surface chemistry, and their combination and consolidation into nanostructured materials to target the needs of thermoelectricity.
Veranstalter
Kontakt
Brigitte Schwarz
Fakultät für Chemie der Universität Wien
Dekanat
01/4277-52006
brigitte_schwarz@univie.ac.at
Erstellt am Dienstag, 07. November 2017, 12:45
Letzte Änderung am Mittwoch, 08. November 2017, 11:13