Figure 2

Solid-state 13C NMR spectra of pristine SWN (blue) and the obtained P-SWN (red).
The two new resonance peaks at around 157 ppm and 38 ppm are signed to C =N and C−H bonds, respectively.
Solid-state 13C NMR spectra of pristine SWN (blue) and the obtained P-SWN (red).
The two new resonance peaks at around 157 ppm and 38 ppm are signed to C =N and C−H bonds, respectively.