A novel pyridine-functionalized naphthoxazine: thermal stability, proton and metal ion-responsive optical sensing, and biological activity with DFT validation
A novel pyridine-functionalized naphthoxazine monomer synthesized via a one-pot Mannich condensation and fully characterized by 1D/2D NMR, FTIR, and HRMS is reported, establishing a versatile platform for naphthoxazine-based multifunctional materials with potential applications in flame-retardant coatings, optical sens...