Wykłady i seminaria
2025
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6 lutego 2025
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Single-Atom Catalysis for Greener Chemical Processes
- Prof. Gianvito Vile, Politecnico di Milano, Italy
- IChF Aula
Dream Chemistry Lectures- Zobacz więcej
Single-Atom Catalysis for Greener Chemical Processes
- Data: 6 lutego 2025
- Prelegent: Prof. Gianvito Vile, Politecnico di Milano, Italy
- Instytucja: IChF Aula
- Abstrakt:
Prof. Gianvito Vile, Politecnico di Milano, Italy. He has received several awards for his research, including the ETH Medal, the Dimistris N. Chorafas Award from the Weizmann Institute of Sciences, the Felder Award from the pharmaceutical company Bracco, and the ERC Starting Grant from the European Research Council. He is the coordinator or partner of several European grants (among those, SAC_2.0, GreenDigiPharma, SACforCO2, MERGE, and SusPharma), Italian grants (PRIN, PRIN PNRR), and other industrial projects. He is also expert evaluator or panel member for several national or international scientific foundations. Gianvito has been elected Fellow of the Young Academy of Europe, a pan-European academy of 200 top young scientists and scholars from every discipline, supported by Academia Europaea.
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31 stycznia 2025
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Scanning tunneling microscopy of monolayer organic films
- Prof. Alexandr Marchenko, Institute of Physics, National Academy of Sciences, Kyiv, Ukraine
- Seminar of the Team 7, Conference room
- Zobacz więcej
Scanning tunneling microscopy of monolayer organic films
- Data: 31 stycznia 2025, 11:00
- Prelegent: Prof. Alexandr Marchenko, Institute of Physics, National Academy of Sciences, Kyiv, Ukraine
- Instytucja: Seminar of the Team 7, Conference room
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23 stycznia 2025
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Imaging infections using label-free Raman spectroscopy
- Prof. Ute Neugebauer, Leibniz IPHT, Jena, Germany
- IChF Aula
Dream Chemistry Lectures- Zobacz więcej
Imaging infections using label-free Raman spectroscopy
- Data: 23 stycznia 2025, 13:00
- Prelegent: Prof. Ute Neugebauer, Leibniz IPHT, Jena, Germany
- Instytucja: IChF Aula
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22 stycznia 2025
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PhD Seminar
- IPC PAS Auditorium
- Zobacz więcej
PhD Seminar
- Data: 22 stycznia 2025, from 2:00 PM to approx. 3:30 PM.
- Instytucja: IPC PAS Auditorium
- Miejsce:
A weekly PhD seminar will be held in the IPC PAS Auditorium on Wednesday.
- Osoba kontaktowa:
Robert Kołos
Head
Doctoral Studies, IPC PAS
- Abstrakt:
In the programme:
Gunjan Tiwari, M. Sc.
‘Co-assembly of magnetic nanoparticles and amino acid architecture using
Langmuir-Blodgett trough experiment’
Klaudia Staśkiewicz, M. Sc.
‘Characterization of bacterial biofilm growth using microfluidic devices’
Wojciech Mazurkiewicz, M. Sc.
‘An antifouling study of surface-modified carbon fiber microelectrodes
against dopamine oxidation byproducts’
This session will be chaired jointly by the PhD students Habibollah
Atigheh, Abhishek Viswanath, and Julia Maciejewska-Komorowska.
Everybody is most welcome to attend (the Thesis Supervisors in particular!)
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21 stycznia 2025
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A molecular view at interfaces - emulsion and catalysis
- Prof. Ellen Backus, University of Vienna
- Excellent Chemistry Lecture - Cluster 2, IChF Aula
Excellent Chemistry Lectures- Zobacz więcej
A molecular view at interfaces - emulsion and catalysis
- Data: 21 stycznia 2025, 11:00
- Prelegent: Prof. Ellen Backus, University of Vienna
- Instytucja: Excellent Chemistry Lecture - Cluster 2, IChF Aula
- Osoba kontaktowa:
dr Sylwester Gawinkowski
- Abstrakt:
Interfaces are important areas where reactions are taking place or where interactions on the molecular level determine the energetics. However, often it is difficult to obtain molecular level information from an interface, as the surrounding bulk molecules overwhelms the signal from the few interfacial molecules. In this talk we will discuss how sum frequency generation spectroscopy (SFG) can be used to obtain molecular level information of interfaces. Sum-frequency generation (SFG) spectroscopy is a technique capable of retrieving vibrational information of selectively interfacial molecules even if bulk amounts of liquid are present. Here, we will discuss two recent highlights of our work.
In the first part of the talk we will aim to understand the molecular scale interactions of a switchable emulsifier comprising poly(methacrylic acid) (PMAA) and poly(ethylene glycol) methacrylate (PEGMA). This emulsifier forms stable oil/water emulsions at pH > 10, but the emulsion becomes unstable at pH < 3 due to droplet aggregation. Using SFG, we study the PMAA/PEGMA polymer deposited on an aqueous subphase. We find that at pH 2.5, both MAA-EG H-bonds and MAA = MAA cyclic dimers contribute to droplet aggregation in the emulsion. In contrast, at pH 11.5 deprotonation and solvation of the PMAA component lead to a polymer restructuring forming a negative shell around the droplets, electrostatically stabilising the emulsion in alkaline conditions.
In the second part of the talk will follow the dynamics of water molecules at the TiO2-water interface after photoexcitation with UV light. A critical step in photocatalytic water dissociation is the hole-mediated oxidation reaction. Using femtosecond time-resolved SFG spectroscopy we could obtain molecular-level insights into the mechanism of this complex reaction under realistic conditions. Following the generation of holes at the surface immediately after photoexcitation of the catalyst with UV light, water dissociation occurs on a sub-20 ps timescale. At both pH 3 and 11, we observe the conversion of H2O into Ti-OH groups and the deprotonation of pre-existing Ti-OH groups. This study provides unique experimental insights into the early steps of the photo-induced dissociation processes at the photocatalyst-water interface.
Ellen Backus obtained her PhD in 2005 at Leiden University in the Netherlands. After a PostDoc at the University of Zurich, she moved back to the Netherlands for an independent PostDoc position at AMOLF in Amsterdam. In 2012, she joined the Molecular Spectroscopy department at the Max Planck Institute for Polymer Research as a group leader. Since 2018 she is professor for physical chemistry at the University of Vienna and leading the Ultrafast and Nonlinear Spectroscopy group. The overall research goal of her group is understanding the structure, relaxation dynamics, and reactivity of soft matter at interfaces and in bulk on the molecular scale.
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13 stycznia 2025
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IChF Microsymposium
- 13-15.01.2025 (monday to wednesday), IChF
- Zobacz więcej
IChF Microsymposium
- Data: 13 stycznia 2025
- Instytucja: 13-15.01.2025 (monday to wednesday), IChF
- Miejsce:
Zoom link (lectures only)
Meeting ID: 923 0508 2437
Passcode: 492219