writer：Nan Yan, Xuejie Liu, Jintao Zhu, Yutian Zhu, Wei Jiang
keywords：无机纳米粒子阵列, 嵌段共聚物, 自组装, 扁平乳液液滴, 软受限
source：期刊
specific source：ACS Nano, 2019, 13(6), 6638-6646
Issue time：2019年

摘要：大规模精确控制无机纳米粒子的空间排列对于功能纳米材料、传感以及光学/电子器件的设计具有重要意义。尽管近年来在控制纳米粒子组织方面取得了很大进展，但在多个长度尺度上实现高度有序的纳米粒子阵列仍是一项重大挑战。本文利用塌缩乳液液滴内自组装的嵌段共聚物纳米片六角排列圆柱图案作为支架，实现了无机纳米粒子在长达数十微米范围内的长程有序阵列排列。该技术可生成多种纳米粒子排列的阵列结构，包括六角蜂窝结构、周期纳米环结构及其组合。该发现为制备多样化纳米粒子阵列结构、设计功能材料和器件提供了有效途径。

Abstract：Precise control over the spatial arrangement of inorganic nanoparticles on a large scale is desirable for the design of functional nanomaterials, sensing, and optical/electronic devices. Although great progress has been recently made in controlling the organization of nanoparticles, there still remains a grand challenge to arrange nanoparticles into highly-ordered arrays over multiple length scales. Here, we report the directed arrangement of inorganic nanoparticles into arrayed structures with long-range order, up to tens of microns, by using hexagonally-packed cylindrical patterns of block copolymer nanosheets self-assembled within collapsed emulsion droplets as scaffolds. This technique can be used to generate nanoparticle arrays with various nanoparticle arrangements, including hexagonal honeycomb structures, periodic nanoring structures, and their combinations. This finding provides an effective route to fabricate diverse nanoparticle arrayed structures for the design of functional materials and devices.

论文链接：https://doi.org/10.1021/acsnano.9b00940