2:00 pm – 3:00 pm
Lecture Hall 55.02
We are very happy to welcome within the CRC 1333 Colloquium Series:
Darmstadt University of Technology
Thursday, June 02, 2022, 2:00 – 3:00 pm
Topic: “Controlled polymer functionalization, charge regulation, and ion transport in confinement of mesopores”
Her research interest focuses on nanopore design to program bioinspired and adaptive transport. (Polymer) functionalization of spatially confined nanopores, nanopore wetting and charge control, innovative nanoporous material architecture design as well as automated design procedures are the key elements for this research. Based on this expertise She develop model systems, and solve challenges in the context of water management, energy conversion and monitoring. Her long term vision is to close the performance gap of transport control abilities between natural and technological nanopores / membranes allowing gated, selective, directed and active transport in three dimensional complex hierarchical systems.
The CRC cordially invites all who are interested to the lecture.
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, fast, and gated. A key factor to this performance is their nanoscale structure and local control on charge regulation and polarity. 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, e.g. by pushing the limits of polymer functionalization in nanopores.[1,2]
This talk will highlight our recent advances related to improving polymer functionalization control in mesoporous thin films. This includes gradual variation of polymer amount and grafting-from of block co-oligomers in silica mesopores mainly focusing on iniferter-initiated RAFT polymerizations. In addition to grafting from functionalization, in-situ functionalization strategies based on specifically designed block-copolymers as functional template will be presented. Selected examples demonstrating the resulting ionic mesopore accessibility, determined by polymer chain architecture, polymer amount, monomer charge, and spatial confinement will be given. Thereby, especially charge-regulation in spatial confinement of mesopores and its influence on ionic transport will be discussed.
 Pardehkhorram, A. Andrieu-Brunsen, Chem. Commun., Pushing the limits of nanopore transport performance by polymer functionalization, 2022, DOI: 10.1039/D2CC01164F
 Brilmayer, C. Förster, L. Zhao, A. Andrieu-Brunsen, Recent trends in nanopore polymer functionalization, Current Opinion in Biotech, 2020, 63, 200-209.