摘要
以苯乙烯(St)为主要单体,对苯乙烯磺酸钠(NaSS)和可聚合稀土荧光配合物(Eu(AA)(BA)_2Phen)为功能性单体,通过微波辐射无皂乳液聚合制备了Poly(St-NaSS-Eu(AA)(BA)_2Phen)共聚物荧光乳液纳米粒子.利用红外光谱对共聚物的结构进行了证实;通过透射电子显微镜和扫描电子显微镜观察了粒子的形态、结构及大小;利用激光光散射粒度仪测试了粒子的大小及分布;结果发现所制备的共聚物荧光乳液纳米粒子呈大小均一的球形形状,粒径大小约为35 nm;采用荧光分光光度计测试,发现共聚物纳米粒子在595 nm和619 nm处出现Eu^(3+)的特征发射光谱,具有良好的荧光效果.
A polymerizable fluorescent monomer（ Eu（ AA）（ BA）2Phen） was synthesized with Eu^3 ＋,acrylic acid（ AA）,benzoic acid（ BA）,and 1,10-phenanthroline（ Phen）,and the chemical structure was characterized by elemental analysis and Fourier-transform infrared spectroscopy（ FTIR）. The results indicted that the polymerizable fluorescent monomer was successfully prepared. The fluorescent nanoparticles were prepared with styrene（ St）,sodium p-styrenesulfonate（ NaSS）,and polymerizable fluorescent monomer using microwave-assisted soap-free emulsion polymerization technique. The chemical structure of poly（ St-Na SS-Eu-（ AA）（ BA）_2Phen） was characterized by FTIR. The result revealed that copolymerization occurred among St,Na SS,and Eu（ AA）（ BA）_2Phen,and the poly（ St-Na SS-Eu（ AA）（ BA）_2Phen） compolymer was prepared successfully. Moreover,it was found that the poly（ St-NaSS-Eu（ AA）（ BA）_2Phen） had good thermal stability shown by thermo-gravimetric analysis（ TGA）. The morphologies and particle sizes of latexes nanoparticles were observed using transmission electron microscope（ TEM） and scanning electron microscope（ SEM）,and the images showed that the particles had sphere-shapes,whose size was 35 nm. Compared with conventional heating,poly（ St-NaSS-Eu（ AA）（ BA）_2Phen） latexes nanoparticles obtained by microwave irradiation were much smaller. The average particle size and its distribution were measured by photon correlation spectroscopy（ PCS）,and the result showed that the hydrodynamic diameters and distribution of particles both increased gradually with the contents of Eu（ AA）（ BA）2Phen. In addition,fluorescent spectrum test indicated that the nanoparticles had obvious emission at 595 nm and 619 nm with excitation at 277 nm.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2016年第1期85-90,共6页
Acta Polymerica Sinica
基金
国家自然科学基金(基金号51273058)资助项目
关键词
微波辐射
荧光
稀土
乳液纳米粒子
Microwave radiation
Fluorescent
Rare earth
Emulsion nanoparticles
