High-Yield Synthesis of Monodisperse Dumbbell-Shaped Polymer Nanoparticles

被引：193
作者：
Park, Jin-Gyu [1 ]
Forster, Jason D. [1 ]
Dufresne, Eric R. [1 ,2 ,3 ,4 ]
机构：
[1] Yale Univ, Dept Mech Engn, New Haven, CT 06511 USA
[2] Yale Univ, Dept Chem Engn, New Haven, CT 06511 USA
[3] Yale Univ, Dept Phys, New Haven, CT 06511 USA
[4] Yale Univ, Sch Med, Dept Cell Biol, New Haven, CT 06511 USA
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 17期
关键词：
PHOTONIC CRYSTALS; EMULSION POLYMERIZATION; COLLOIDAL PARTICLES; SILICA; SYSTEM;
D O I：
10.1021/ja101760q
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We describe a method for producing highly monodisperse dumbbell-shaped polymer nanoparticles with dimensions on the order of a few hundred nanometers in extremely high yields. Our technique is based on seeded polymerization, where suspended core-shell particles (linear polystyrene core with polystyrene-co-trimethoxysilylpropylacrylate shell) are used as seeds. When an aqueous suspension of seed particles is mixed with monomer solution, the core-shell particles display dramatic changes in their morphology. Subsequent heating drives the polymerization of monomer, resulting in the formation of dumbbell-shaped particles. The relative sizes of the two Lobes can be controlled by varying the relative volume of the monomer with respect to the seed particle. These particles are well-suited for future studies of the assembly of photonic crystals of anisotropic particles.
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页码：5960 / +
页数：4
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