The disruption of the internal atomic electronic orbital symmetry in molecules alters their spatial configuration, consequently leading to changes in stacking. It has also been previously reported that the phenomenon can result in stable luminescent phenomenon [89] . Yang proposed the rehybridization-induced emission enhancement (RHIEE) mechanism based on the conformational transition of the central N atom of the triphenylamine group in the TBPMCN crystal under high pressur (Figure )e. As the pressure increases, the distance between adjacent TBPMCN molecules decreases due to compression. Under a certain external pressure (approximately 2 GPa in this study), the repulsion force generated by the weak C -H -N hydrogen bond drives the rehybridization process of the N atom, and the N atom transitions from a sp 3 metastable triangular-cone (TC) to a three-blade-propeller (TBP) configuration (Figure ), manifesting macroscopically rehybridization-induced emission enhancement.