Spontaneous conversion of pyridine N -oxide ylide covalent organic framework (COF) into biradical COF as an efficient catalyst in catalytic dehydrogenation of nitrogen heterocycles

C cross-polarization magic angle spinning nuclear magnetic resonance spectroscopies, confirm the coexistence of ylides and biradical species within the COF material. Additionally, the COF exhibits promising catalytic activity, serving as an efficient catalyst in the dehydrogenation of nitrogen heterocycles. This work bridges the gap between ylide COFs and biradical COFs, expanding our understanding of porous materials and their potential applications in advanced chemistry.