Fig. 2: HS-AFM observations of UC13 in DMSO.
From: Molecular-level insights into the supramolecular gelation mechanism of urea derivative
a Structure of UC13. b Photograph of the supramolecular gel formed by 30 mM UC13 in DMSO. Scale bar: 5 mm. c Clipped topographic HS-AFM images of 30 mM UC13 in DMSO immobilized on a HOPG surface. The time indicated in each image shows the time elapsed since the addition of the UC13 to the DMSO solution. Scale bar: 50 nm. Imaging rate: 0.5 s/frame. The latter stage fibril showing fast elongation, supported by already existing fibrils, is marked by a white arrow on the image at 337 s. See also Supplementary Movie 1. Representative time-lapse snapshots showing similar results from more than five independent experiments are shown. d X-ray crystallographic analysis of UCCy, the cyclohexyl analog of UC13. e Photograph acquired after measurements indicating that the supramolecular gel covers the substrate and cantilever. Scale bar: 10 mm.
