Revisiting phosphorus analogues of phthalimides and naphthalimides: syntheses and comparative studies.

A series of phosphorus analogues of aromatic-fused monoimides (phthalimides and naphthalimides) bearing a mesityl group on the P center have been synthesized. In a comparison of their photophysical, electrochemical, and thermal properties with those of the corresponding imides, the impact of P incorporation was revealed. Furthermore, theoretical studies using DFT methods were conducted to understand their properties.