Single-Molecule Imaging of a Micro-Brownian Motion of a Chiral Helical-Conjugated Polymer as a Molecular Spring Driven by Thermal Fluctuations

We observed a micro-Brownian motion of single molecules of a chiral helical -conjugated polymer as a molecular spring on mica substrate under n-octylbenzene at room temperature using high-speed (rapid scan) AFM. The average velocity at the chain end of the polymer was 67 nm s 1 at the observation point. The analytical result shows that the mean square… (More)