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 H-1 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.