MateriAlZ Seminar: Annette Andrieu-Brunsen
Friday, November 12, 2021, 11:00 am MST
Annette Andrieu-Brunsen
Professor of Macromolecular Chemistry – Smart Membranes
Technische Universität Darmstadt, Germany
"Wettability and charge regulated nanopores"
Zoom link | Passcode: 430637
MateriAlZ Seminar website | YouTube | Twitter
Abstract
Nanopores are a key component in various technologies from oil production, separation and sensing to drug delivery or catalysis and energy conversion. In contrast to technological pores, biological pores and channels demonstrate highly precise transport being directed, highly selective, and gated. A key factor to this performance is their nanoscale structure and local control on charge and wettability. Inspired by this performance and nanoscale precision we are interested in designing precisely functionalized nanoscale porous materials to understand and advance transport performance of technological pores. This talk will especially focus on the role of nanopore wettability and nanopore charge regarding ionic transport regulation nanoscale pores. Mesoporous silica films and inverse colloidal monolayers serve as porous structure. Wettability and charge are regulated using molecular or polymer-based functionalization. In this context, the influence of polymer type on ionic transport, the influence of spatial confinement on apparent pKa, as well as precise placement of different functional
polymers into each nanopore are discussed. Strategies to adjust nanopore wettability of mesoporous silica films and with this ionic transport will be presented, for example, using gas phase deposition of fluorinated silanes, or simply the exchange of counterions in polyelectrolyte functionalized silica mesopores.
Bio
Annette Andrieu-Brunsen studied Chemistry at the Philipps- Universität Marburg (Germany). She got her Ph.D. in 2010 from the Johannes-Gutenberg Universität and the Max-Planck-Institute for Polymer Research in Mainz (Germany) in the research group of Professor Knoll funded by the Studienstiftung des Deutschen Volkes and has been working together with Professor Soler-Illia and Professor Azzaroni at the CNEA in Buenos Aires (Argentina) before becoming appointed as assistant professor and now full professor at the TU-Darmstadt, Germany. She received several awards within the last years such as the ERC Starting Grant or the recognition as outstanding reviewer by Nanoscale Horizons and Materials Horizons in 2017 and 2018.