Optical and structural properties of Carbon nanodots and Metal-Organic Frameworks
Date | Do, 26.02.2015 | |
Time | 11.15 | |
Speaker | Dr. Fabrizio Messina, Laboratory of Advanced Materials Physics (LAMP), Dipartimento di Fisica e Chimica, Università degli Studi di Palermo (Italy) | |
Location | Universität Bern, Institut für Angewandte Physik, Gebäude exakte Wissenschaften, Hörsaal B116, Sidlerstrasse 5, 3012 Bern | |
Program | This seminar will focus on two separate scientific subjects we recently began investigating at the Laboratory of Advanced Materials Physics (LAMP). 1: Carbon nanodots (CDs) are a novel and rapidly emerging family of carbon-based nanomaterials. They are tiny (< 10 nm) and optically-active carbonaceous nanoparticles, which combine the capability of yielding intense fluorescence with water solubility, bio-compatibility and ease of synthesis. In our labs, we synthesize nitrogen-doped CDs and study them via a combination of optical and non-optical techniques. Our experiments eventually aim at elucidating the optical properties of these frontier nanomaterials, poorly understood so far. 2: Metal Organic Frameworks (MOFs) are porous crystalline materials built from a network of metal ions coordinated by organic ligands. Their large porosities, due to the presence of voids in the three-dimensional structure, combined with an extraordinary compositional variety, are extremely promising for a wide panel of applications such as storage and separation of gases, sensing, catalysis and drug-delivery. Our undergoing studies on MOFs mostly aim to learn how their structures are influenced by the dsorption of small molecules, and to investigate their stability, typically hindered by substantial aging processes occurring even in standard ambient conditions. |
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Link | www.iap.unibe.ch |