Seminars

of the department of physical and macromolecular chemistry

Departmental Seminars

The Seminars of the Department of Physical and Macromolecular Chemistry are back, and in the upcoming semester they will be organized in the following way: There are going to be guest speakers and PhD students presenting during the semester.

If there will be no covid restrictions, the lectures will take place on Wednesdays in building of Chemical departments (Hlavova 8, Praha 2) at 14:00 in lecture room CH3

There are no upcoming seminars scheduled yet

Short presentations of 1st year internal PhD students

Speakers:

in alphabetical order of surnames

  • Deborah Anima Brako-Amoafo (supervisor: Prof. RNDr. Petr Nachtigall, Ph.D.)
  • Katarzyna Maria Byś (supervisor: Ing. Mariusz Marcin Uchman, Ph.D.)
  • Seyedsaber Hosseini (supervisor: Mgr. Michal Mazur, Ph.D.)
  • Jan Kožíšek (supervisor: RNDr. Ivana Šloufová, Ph.D.)
  • Niccoló Lusiani (supervisor: RNDr. Ondřej Sedláček, Ph.D.)
  • Patricia Montes Rubio (supervisor: Doc. RNDr. Miroslav Štěpánek, Ph.D.)
  • Olena Payuk (supervisor: RNDr. Ondřej Sedláček, Ph.D.)
  • Fateme Poorsharbaf Ghavi (supervisor: Prof. Ing. Jiří Čejka, Ph.D.)
  • Vyshakh Manayath Panakkal (supervisor: RNDr. Ondřej Sedláček, Ph.D.)

Each student will give a brief 7-8 min talk, which will include

  1. University, topic of her/his master Thesis and main conclusions of the Master thesis (1 slide only)
  2. Brief introduction of her/his Ph.D. topic including motivation, ideas and plans (main part of the presentation)
  3. Preliminary experimental results are welcome but not obligatory

After the talk, there will be space for few brief comments/questions (2 min)
The talk must not be longer than 8 min.
Seminar will be available via Zoom: https://cuni-cz.zoom.us/j/94758328674

Self-assemblies based on hydrophilic polymers in aqueous media

Anastasiia Fanova as a finishing Ph.D. student, supervisor: Prof. RNDr. Miroslav Štěpánek, Ph.D.

Our study was devoted to experimental investigation (light scattering, SAXS/SANS, NMR and fluorescence spectroscopy) of self-assemblies based on hydrophilic polymers in aqueous media. Specifically, we focused
on two classes of systems: (i) hydrophilic polymers whose self-assembly is driven by association of terminal hydrophobic groups and (ii) double hydrophilic block polyelectrolytes whose self-assembly occurs via electrostatic complexation of polyelectrolyte blocks.

Seminar will be available via Zoom: https://cuni-cz.zoom.us/j/94758328674

Theoretical investigation of novel catalysts

by M.Sc., Mingxiu Liu

Finishing Ph.D. student, supervisor: Prof. RNDr. Petr Nachtigall, Ph.D.

Zeolites are playing an important role in petrochemistry (as a catalyst for fluid catalytic cracking) and recently also in sustainable processes, such as biomass conversion. My doctoral work focuses on the structural determination of new zeolites, the mechanism of the desilication under hydrothermal conditions, and on the identification of the catalytic sites in acid zeolites with Lewis and Brønsted acid sites by the first-principle calculations.

Seminar will be available via Zoom: https://cuni-cz.zoom.us/j/94758328674

Theoretical study of branched polyelectrolytes

Varvara Prokacheva is finishing Ph.D. student under supervision of doc. RNDr. Filip Uhlík, Ph.D. Department of Physical and Macromolecular Chemistry, Faculty of Science

Branched polyelectrolytes are being extensively studied due to the wide range of their possible applications and interesting properties of
their natural analogs.

This work is focused on the theoretical study of conformational transitions occurring in pH-responsive polyelectrolytes upon variation in pH, salt concentration or solvent quality. That can provide guidelines for the design of smart devices, for example, nanocarriers for drug delivery or desalination agents for water treatment applications.

Seminar will be available via Zoom: https://cuni-cz.zoom.us/j/94758328674

Theoretical investigation of soft matter: Representations and methods

Aleksandr Kazakov is finishing Ph.D. student under supervision of doc. RNDr. Filip Uhlík, Ph.D. Department of Physical and Macromolecular Chemistry, Faculty of Science

It is desirable to have a deeper understanding of matter. There are very many representations and theoretical models in soft matter research.

Each representation brings its own benefits and drawbacks, thus it is essential to distinguish them and to use them appropriately. In this presentation I give an introduction to some of the methods and the insights I gained after their application to problems in soft matter research.

Seminar will be available via Zoom: https://cuni-cz.zoom.us/j/94758328674

NMR Simulation of Zeolites: An Approach combining ab initio Simulations and Machine Learning

by M.Sc., Chen Lei

Chen Lei is finishing Ph.D. student under supervision of Prof. RNDr. Petr Nachtigall, Ph.D. Department of Physical and Macromolecular Chemistry, Faculty of Science

Solid state 27Al NMR (ssNMR) is an important technique to characterize the structure of catalytic sites in zeolites. To improve the interpretation of spectra, we developed a model based on DFT calculations to clarify the role of experimental conditions, lattice dynamic and local structure. We described the behaviour of a few zeolites accurately with the support of machine learning (ML), which can potentially simplify NMR calculation of  zeolites.

Seminar will be available via Zoom: https://cuni-cz.zoom.us/j/94758328674

Mechanochemistry for sustainable synthesis of framework materials

by M.Sc., Daniel Rainer

Mechanochemical methods in synthesis chemistry help to alleviate concerns regarding sustainability, ecological considerations, and resource efficiency. Their success in the field of MOFs (metal-organic frameworks) has inspired us to investigate possibilities for production of sodium coordination polymers as well as zeolites with improved synthesis conditions compared to traditional routes.

Seminar will be available via Zoom: https://cuni-cz.zoom.us/j/94758328674

Prions, prion strains and expanding universe of prion diseases.

by doc., Ing., Ph.D., Karel Holada

Prions are unorthodox protein infectious particles devoid of coding nucleic acids and phospholipid membrane. The information needed for their propagation is enciphered in the shape of pathogenic PrPSc prion protein  molecule. PrPSc has high ratio of β-sheet structures, is partially resistant to proteases and has tendency to aggregate and form amyloid fibrils. Prions propagate by physical contact of PrPSc with normal cellular prion  protein (PrPC) which adopts its pathological conformation. The process is called template directed misfolding.

The significance of prion pathogenesis was boosted by increasingly accepted notion that many other neurodegenerative disorders, like Alzheimer and Parkinson disease, also utilize the mechanism of template directed misfolding to facilitate the spread of pathologic conformation of disease specific proteins within the body. Our laboratory is dealing with development and implementation of new prion diagnostic and inactivation methods.

 

At the beginning of the seminar a new post-doc researcher Daniel Rainer, Ph.D. from the group of heterogenous catalysis and advanced materials will be introduced to the members of the department.

Hybrid Nanostructures Containing Boron Compounds

by M.Sc., Jianwei Li

Jianwei Li is finishing Ph.D. student under supervision of doc. RNDr. Matějíček Pavel, Ph.D. Department of Physical and Macromolecular Chemistry, Faculty of Science

Boron cluster compounds (BCCs) are inorganic polyhedral structures. Incorporation of BCCs into polymers is extensively investigated in the field of energy storage, biomedicine and luminochromic materials.

Jianwei’s Ph.D. works mainly focus on preparing novel BCC-containing polymeric materials via covalent bonding or noncovalent interactions. The tunable nanostructures can serve as drug cargo in Boron neutron capture  therapy or polyelectrolytes in Solid-state batteries.

The talk will be accessible also via Zoom: https://cuni-cz.zoom.us/j/94758328674