论文部分内容阅读
The N-isopropylacrylamide and acrylic acid copolymeric microgel was pr epared by dispersion polymerization. The complex of microgel containing terbium( Ⅲ) was prepared and characterized by dynamic laser scattering(DLS), UV spectrum , FT_IR and Fluorescence spectrum. The DLS results indicated that the particle r adium decreased from 120 nm to 90 nm after the terbium adding into microgel. In th e UV spectrum,the main absorption peak was red shifted from 204 nm to 210 nm,cor r espondingly,the peaks of carbonyl groups and the amino groups of the microgel al so underwe nt a red shift in FT-IR spectrum by adding terbium(Ⅲ) ions.The above measureme n ts indicated that the terbium ion could bind with the oxygen atom in carbonyl gr oups and the nitrigen atom in amino groups of microgel. The fluorescence spectru m showed that the Tb(Ⅲ)-microgel complex possesed a good fluorescence properti es showing the characteristic emissions of terbium(Ⅲ) ions and the complex exhi bited the strongest fluorescence emission at 0.6% ration.
The N-isopropylacrylamide and acrylic acid copolymeric microgel was pr epared by dispersion polymerization. The complex of microgel containing terbium (III) was prepared and characterized by dynamic laser scattering (DLS), UV spectrum, FT_IR and Fluorescence spectrum. The DLS results indicated that the particle r adium decreased from 120 nm to 90 nm after the terbium adding into microgel. In th e UV spectrum, the main absorption peak was red shifted from 204 nm to 210 nm, cornspondingly, the peaks of carbonyl groups and the amino groups of the microgel al so underwe nt a red shift in FT-IR spectrum by adding terbium (III) ions. The above measureme n ts indicates that the terbium ion could bind with the oxygen atom in carbonyl gr oups and the nitrigen atom in amino groups of microgel. The fluorescence spectru m showed that the Tb (Ⅲ) -microgel complex possesed a good fluorescence properti es showing the characteristic emissions of terbium (Ⅲ) ions and the complex exhi bited the stronges t fluorescence emission at 0.6% ration.