Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742-2115, USA.
Nanotechnology. 2013 Feb 1;24(4):045305. doi: 10.1088/0957-4484/24/4/045305. Epub 2013 Jan 8.
We present a novel and simple method for forming hexagonal gold nanoparticle arrays that uses Coulombic interactions between negatively charged gold nanoparticles on positively charged vertically oriented poly(4-vinylpyridine) cylinders formed in a spin cast polystyrene-b-poly(4-vinylpyridine) block copolymer film. Exposure of the block copolymer film to dibromobutane vapor quaternizes and crosslinks the poly(4-vinylpyridine) domains which allows for the templated deposition of gold nanoparticles into a self-assembled hexagonal array through electrostatic interactions. These systems can form the basis for sensors or next generation nanoparticle based electronics.
我们提出了一种新颖而简单的方法来形成六方金纳米粒子阵列，该方法利用了在通过旋转涂布聚苯乙烯-b-聚（4-乙烯基吡啶）嵌段共聚物膜中形成的带正电荷的垂直取向的聚（4-乙烯基吡啶）圆柱上的带负电荷的金纳米粒子之间的库仑相互作用。将嵌段共聚物膜暴露于二溴丁烷蒸气中，使聚（4-乙烯基吡啶）基团季铵化和交联，从而允许金纳米粒子通过静电相互作用模板沉积到自组装的六方阵列中。这些系统可以为传感器或下一代基于纳米粒子的电子设备提供基础。
