Intern

THE LEHMANN GROUP: ORGANIC SOFT MATERIALS AND LIQUID CRYSTALS

Equipment

The Working Environment

Laboratory of the Working Group Lehmann - Laboratory of the Working Group Lehmann — Laboratory of the Working Group Lehmann

Fourier Transform Infrared Spectrophotometer

IR Affinitiy-1 and Infrered Microscopee - IR Affinitiy-1 and Infrered Microscope — IR Affinitiy-1 and Infrered Microscope

Infrared Microscope AIM-8800 - Infrared Microscope AIM-8800 — Infrared Microscope AIM-8800

Responsible group member: Nikolai Scheuring

Shimadzu IR Affinitiy-1 and Infrared Microscope AIM-8800

Further information: https://www.newport.com/n/introduction-to-ftir-spectroscopy

Recycling Gel Permeation Chromatography (Recycling GPC)

Responsible group members: Katja Noll, Nikolai Scheuring

Shimadzu Liquid chromatograph LC-20AD, equipped with

* column set PSS SDV 50 Å, 20 x 600 mm; PSS SDV 500 Å, 20 x 600 mm

* degassing unit DGU-20A

* system controller CBM-20A

* photodiode array detector SPD-M20A

* fraction collector FRC-10A

* switching valve FCV-20AH2

Further information: http://www.shimadzu.com/an/hplc/aplsys/gpc.html

Polarising Microscopy

Linkam Heating Stage / Cooling Stage, Nikon Optical Microscope and Fluorescence Spectrometer - Linkam Heating Stage / Cooling Stage, Nikon Optical Microscope and Fluorescence Spectrometer — Linkam Heating Stage / Cooling Stage, Nikon Optical Microscope and Fluorescence Spectrometer

Nikon Optical Microscope - Nikon Optical Microscope — Nikon Optical Microscope

Agilent Mixed Signal Oscilloscope 2022A and Arbitrary Waveform Generator, Tegam High-Voltage Amphifiergam - Agilent Mixed Signal Oscilloscope 2022A and Arbitrary Waveform Generator, Tegam High-Voltage Amphifier — Agilent Mixed Signal Oscilloscope 2022A and Arbitrary Waveform Generator, Tegam High-Voltage Amphifier

Responsible group member: Maximilian Baumann, Nikolai Scheuring

Agilent Oscilloscope and Waveform Generator

Linkam Heating/Cooling Stage

Nikon Microscope (Eclipse LV100 POL) and Spectrometer

Further information: https://www.nikoninstruments.com/en_DE/Products/Upright-Microscopes/Research/Eclipse-LV100-POL

Small Angle X-ray Scattering (SAXS)

Responsible group members: Lisa Gerbig

Radiation protection representative (Strahlenschutzbeauftragter): Prof. Dr. M. Lehmann, Lisa Gerbig

Bruker Nanostart Diffractometer

Further information: https://www.bruker.com/de/products/x-ray-diffraction-and-elemental-analysis/small-angle-x-ray-scattering.html

Solid Phase Peptide Synthesis (SPPS)

Responsible group member: Nikolai Scheuring

Heidolph Synthesis 1, Parallel Synthesis with wastebox

Homepage

This Homepage is maintained by Pascal Weinberger and Maximilian Baumann.

Modelling Materials Studio

Folie 1

To set up a reliable model for self-assembly of mesogens in soft materials, all experimental data (SAXS, WAXS, FT-IR, UV-Vis etc.) is taken into consideration. First, a unit cell is generated based on the X-ray scattering data. Second, a possible conformer is built with a suitable size, which guarantee the nanosegregation and molecular mobility in an LC phase. Eventually, the molecules are arranged to best fit the experimental data with efficient space-filling and nanosegregation. Subsequently, the structures are geometry optimised with the commercial program Materials Studio (Forcite, Force Field: COMPASS). From the final structure a powder (Materials Studio) and a fibre diffraction simulation (CLEARER) is generated to best fit the experimental SAXS or WAXS pattern.