Fig. 4
From: Bifurcation of self-assembly pathways to sheet or cage controlled by kinetic template effect
Characterization of the sheet structure. The sheet was produced in the self-assembly from 1 and [PdPy*4](OTf)2 with n-Bu4NOTf in CD3NO2 at 298 K. a–e STEM on a TEM microgrid and f–i AFM on a graphene substrate (dried sample of the reaction mixture). a An empty TEM microgrid. The scale bar indicates 20 μm. b Whole image on a TEM microgrid. The white area corresponds to the background grid and the dark area corresponds to the very thin sheet-type structure. The scale bar indicates 40 μm. c The sheet structure in b is shown in red, while white areas indicate bare TEM microgrid. The scale bar indicates 40 μm. d, e Magnified images of the very thin sheet-type structure. The scale bars in d and e indicate 5 and 10 μm, respectively. f A 20 × 20 μm2 AFM image. The scale bar indicates 5 μm. A 5 × 5 μm2 white square indicates the scanning area for g. g Magnified 5 × 5 μm2 image of f. The scale bar indicates 1 μm. The white lines in g indicate the extracted profile to measure the height. h and i Height profiles. h Crosses over the difference in levels (4.44 nm) where a sheet is on top of another sheet. i Crosses over five lumps
