[Synthesis, characterization and fluorescent properties of o, m, p-(methacrylamido) benzoic acid].

o, m, p- (Methacrylamido) benzoic acid (o, m, p-MAABA) was synthesized from o, m, p-aminobenzoic acid (o, m, p-ABA), elemental analysis and 1H NMR were used to confirm these compounds. The fluorescent properties of the compounds were investigated. The result showed that o, p-MAABA has lambda(ex)max at 358 nm while m-MAABA has lambda(ex)max at 324 nm. Excited at lambda(ex)max, o-MAABA had the strongest fluorescence, while p-MAABA had the weakest, and all of them were round at 420 nm.