Extended Data Fig. 10: Structure of COF-366.

a, b, TEM image (a) and selected area electron diffraction (b) of the COF-366 obtained at the air-water interface using C16-L-tLeuA on the first day. c–g, TEM images of COF-366 synthesized at the air-water interface using C16-L-tLeuA on the seventh day (c). Selected area electron diffraction at different areas (1 (d), 2 (e), 3 (f), 4(g)) indicated the single crystallinity of the crystal. h, Left, Near-atomic structure observation of COF-366 by aberration-corrected high-resolution TEM. Right, corresponding Fast Fourier transform (FFT) pattern.