Preparation of Polymeric Janus Particles by Directional UV-Induced Reactions
Preparation of Polymeric Janus Particles by Directional UV-Induced Reactions
复制标题
定向紫外诱导反应制备聚合物 Janus 颗粒
DOI：
10.1021/la901364a
复制
发表时间：
2009-09-15
期刊：
影响因子：
3.9
通讯作者：
Yang, Wantai
中科院分区：
文献类型：
--
作者：
Liu, Lianying;Ren, Mingwei;Yang, Wantai
聚合物Janus粒子是通过紫外光诱导的选择性表面接枝聚合和偶联反应得到的，这是利用光反应材料（如固定化光引发剂和扩散光引发剂溶液）在暴露于紫外光下的表面上吸收光，以及密集排列的不可移动粒子对光的屏蔽。改变用于光接枝聚合或偶联反应的单体或大分子，选择不同尺寸的聚合物颗粒，双色和两亲性的Janus颗粒可以成功地实现。通过荧光显微镜、扫描电镜和透射电镜的观察，证实了所得Janus粒子的不对称形态。
Polymeric Janus particles are obtained by UV-induced selective surface grafting polymerizations and coupling reactions, in virtue of the light-absorption of photoreactive materials such as the immobilized photoinitiator and spread photoinitiator Solution on the surfaces exposed to UV light and the sheltering of densely arrayed immovable particles from light. Varying the monomers or macromolecules applied in photografting polymerization or Coupling reaction, and choosing diverse polymeric particles of various size, bicolor and amphiphilic Janus particles could be successfully achieved. Observations by fluorescence microscope, scanning electron microscope and transmission electron microscope confirmed the asymmetrical morphology of the resultant Janus particles.