含C_(60)的苯乙烯和丙烯酰胺共聚物的合成与表征

Synthesis and Characterization of C_( 60) 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 ℃ and 80 ℃, respectively. The products are orange or brown powders and soluble in common solvents, such as CH 2Cl 2, CHCl 3, 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.