Fig. 5: Monitoring the growth process of t-TpAzo-R-AMB.
From: Radial growth of twist-stacked covalent organic framework nanofibers

a Schematic illustration, b TEM image, and c AFM height image of the product obtained at 1 h. d Schematic illustration of the product obtained at 72 h. TEM images of samples obtained at reaction time intervals of 3 h (e), 5 h (f), 15 h (g), 24 h (h), and 48 h (i). j Absorption and k ECD spectra of products prepared at different time intervals. l The correlation chart between the diameter of nanofibers and |gabs|max. The scale bars are 200 nm in (b, e–i) and 300 nm in (c).