Effects of the αC-relaxation for PEO and POM: Impact on Crystallization Process, Morphology and Reorganization Behavior
Depending on the presence or absence of an αC-relaxation it is possible to distinguish between crystal-mobile and crystal-fixed semi-crystalline polymers. Only crystal-mobile polymers own a certain chain mobility in the crystalline phase. In contrast to the crystal-fixed polymer Polycaprolactone (PCL), we analyze the impact of the αC-relaxation for two representatives of αC-mobile polymers, Polyethylenoxide (PEO) and Polyoxymethylene (POM), using different methods like SAXS and Flash-/DSC.
Continue reading “Talk by M. Schulz at MLU (May 16, 2017)”
The second Soft Matter Day, organized by the Peter Debye Institute for Soft Matter Physics, will take place on 23 June 2017 at the Theoretical Lecture Hall of the Faculty of Physics and Earth Sciences, Linnéstr. 5, Leipzig. It aims at stimulating scientific exchange and interactions among the groups of the institute and the Leipzig groups that do related work in this field.
Title of thesis: Fluorophilicity in Biologically Relevant Systems Studied with Fluorinated Rhodamines
Date of defence: April 21, 2017
Amphiphilic block copolymers synthesis
- Atom Transfer Radical Polymerization (ATRP)
- Reversible Addition–Fragmentation Chain Transfer (RAFT)
- Gel Permeation Chromatography (GPC)
- Synthetic fluorophylic dyes
Competition between Electrostatic and Hydrophobic Forces in the Central Core Region of Amyloid β Fibrils
Amyloidogenic peptides aggregated to large molecular assemblies are a hallmark of several diseases including Parkinson’s, Huntington’s, and Alzheimer’s disease as well as type II diabetes. Although each of these diseases gives rise to a very distinctive clinical picture, amyloid fibrils share the cross-β structure as a common structural motif. Within this motif, the peptide strands are linked via lateral β-sheet-turn-β-sheet structures that result in fiber-like aggregates with diameters of a few nanometers and lengths up to several micrometers.
The central question that will be addressed is how electrostatic and hydrophobic interactions compete within the central core region of Aβ(1-40) fibrils. Continue reading “Talk by F. Hoffmann at MLU (April 4, 2017)”
Doctoral students seminars
April 4th at MLU (VDP3, SR 1.09):
Felix Hoffmann on “Competition between Electrostatic and Hydrophobic Forces in the Central Core Region of Amyloid β Fibrils” (abstract)
May 16th at MLU (VDP3, SR 1.09):
Martha Schulz on “Effects of molecular dynamics on morphology and properties of αc-relaxation” (abstract)
June 13th, at UL (Linnéstr. 5, SR 225):
Torsten John on “Amyloid peptide aggregation near gold interfaces and membranes” (abstract)
July 18th at MLU (VDP3, SR 1.09):
Mareen Schäfer on “NMR investigations of dynamics in the different phases of semicrystalline polymers” (abstract)
August 15th at UL (Linnéstr. 5, SR 225):
Tobias Thalheim on “Thermophoretic trapping of single molecules ” (abstract)
September 5th at MLU (VDP3, SR 1.09):
Chanita Sungkapreecha on “Phase behavior of polymer/mosquito repellent system PLA/DEET” (abstract)
Advanced Training Modules
Soft skill seminars
Scientists make a lot of mistakes as soon as they start to apply outside science. This workshop will help you to write a convincing application and to be successful in the job interview.
Continue reading “Career workshop: How to write a persuasive job application – how to convince it in the job interview (June 19-20, 2017)”
This module addresses doctoral students in chemistry, physics, biophysics, and related fields without much prior knowledge in NMR spectroscopy. It introduces the basic theoretical and technical concepts necessary for an understanding of data/spectrum acquisition in pulsed NMR and the information content, and focuses on a few specific experimental techniques to study dynamics in polymer and biopolymer systems.
Each day of the two-day program starts with a series of lectures in the morning, followed by hands-on experiments on low-field NMR spectrometers, and demonstrations on high-field spectrometers, during the afternoon. Continue reading “NMR spectroscopy for biomolecular and materials characterization (September 6/7, 2017)”
Research topic: Nanomechanical Investigations of Polymer Folding
Source: Doctoral candidates with supervisor at MLU
Jana represents our iRTG at page 29.