2017 - 2018

Organizers: José Miguel Mancheño y Esther Rebollar

On May 16th we will have a seminar by Abderrazzak Douhal, from the Department of Physical Chemsitry, Faculty of Environmental Sciences and Biochemistry, and INAMOL, University of Castilla-La Mancha, Toledo.

Exploring the photobehavior of nanomaterials and related composites is of great importance for developing science and technology. During the last 3 decades, we are witnessing the discovery and development of several types of materials for a wide range of applications. Metal-Organic Frameworks (MOFs) are a class of crystalline porous materials composed by metal-clusters interlinked by organic ligands. Their excellent physicochemical properties (large surface areas and accessible cavities), as well as their relatively easy and tunable synthesis, make them ideal candidates for a wide range of uses and applications. Recently, the synthesis of new kind of luminescent MOFs (LMOFs) have boosted their use in fields hitherto not explored as LED fabrication and sensing of different chemical compounds. However, to deeply understand their photobehaviour and to further improve their efficiency in related fields, it is paramount to carry out a high-level spectroscopic and ultrafast photodynamics characterization of these LMOFs. Armed with advanced laser spectroscopy, we have unveiled the luminescence and photodynamics properties of a Zr-NDC (NDC= naphthalene dicarboxylate) LMOF and its composite with several fluorescent dyes. On the other hand, we have also explored the photodynamics of two new Zr-based LMOFs (Zr-NDC/Tz and Zr-NDC/CN), and showed how the presence of different nitroaromatic explosive molecules affect their photobehavior. In this sense, we have demonstrated that both LMOFs are able to selectively detect trinitrophenol (highly explosive molecule) in presence of other nitroaromatics owing to specific interactions (H-bonds). Remarkably, these materials can be reutilized for several sensing cycles. All these results reveal the importance of a high-level photodynamics characterization of LMOF in order to boost the development of smarter materials for more efficient nanophotonic applications. If I have time, I will show results on the first report using MOF in a real OLED.

SEMINAR’S DATE, TIME AND PLACE: May 16th 2018, 12:00h, Assembly Hall of IQFR-CSIC, C/ Serrano 119, Madrid

SPEAKER: Abderrazzak Douhal