30 August 2021 to 3 September 2021
University of Innsbruck
Europe/Zurich timezone

【640】Single Molecule Force Spectroscopy of Polyethylene Glycol Using Acid Chloride Anchors

31 Aug 2021, 19:00
1h 30m
Hall

Hall

Poster Applied Physics and Plasma Physics Poster Session

Speaker

Manuel Rainer (uni_innsbruck)

Description

In force spectroscopy of chemical bonds, single molecule chains are being stretched using an atomic force microscope (AFM). Strong surface anchors are required to address covalent bonds. Here acid chloride anchors are tested, featuring a very reactive functional group. Rupture force and rupture length of stretched polyethylene glycol was measured. The slope of the force curves is used to derive the elasticity of the molecule, which in turn yields the length and thus the molecular weight distribution for the stretched molecules. A comparison with the molecular weight distribution provided by the manufacturer shows that indeed polyethylene glycol molecules are stretched.

Primary author

Manuel Rainer (uni_innsbruck)

Presentation materials

There are no materials yet.