Synthesis and characterization of C60-containing styrene and acrylamide copolymers

A series of styrene/acrylamide copolymers were synthesized, The PAm molar fraction in copolymers varies from 1.8% to 33%. Then the C-60-containing copolymers were obtained by the reaction of St/Am copolymer with C-60 in toluene at 30 degrees C and 80 degrees C, respectively, The products are orange or brown powders and soluble in common solvents, such as CH2Cl2, CHCl3, toluene, THF etc., The C-60 moiety in copolymers varies from 0. 49% to 1. 45% (weight percentage ratio), The results also show that with the increase of mole percentage of amide group in copolymers, the weight percentage of C-60 increases while the C-60/amide mole ratios in copolymers decline, In addition, raising the reaction temperature enhances the reactivity, The UV-Vis spectra show that C-60 containing copolymers have a stronger adsorption from 400 nm to 500 nm than pure C-60 and C-60 doped copolymers have. Increasing the C-60 content in those samples, the characteristic peak of C-60 at 330 nm was suppressed gradually by a strong wide adsorption band from 290 nm to 350 nm, which reveals that amide group can react with C-60 and the C-60 is chemically bonded to the copolymers.