FLUORESCENCES AND FORMS OF WATER-SOLUBLE COPOLYMERS OF STYRENE AND ACRYLIC-ACID

The relationship between the fluorescences and structure of the copoly mer of styrene and acrylic acid (ST-AA) was investigated in aqueous so lution, When the concentration of ST-AA increased, there exist monomer fluorescence (lambda(ex) = 258 nm, lambda(em) = 270 nm) and excimer f luorescence (lambda(em) = 375 nm), The excimer fluorescence intensitie s increased with increasing the concentration of ST-AA and with decrea sing pH values, When trace amount of molybdenum compound [Mo3O2(O2CCH3 )(6)(H2O)(3)]. Br-2 . 2H(2)O, was added into the aqueous solution of S T-AA, the excimer fluorescence intensities were increased.