Self-assembly of metal-polymer analogues of amphiphilic triblock copolymers
Self-assembly of metal-polymer analogues of amphiphilic triblock copolymers
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DOI：
10.1038/nmat1954
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发表时间：
2007-08-01
期刊：
影响因子：
41.2
通讯作者：
Rubinstein, Michael
中科院分区：
文献类型：
--
作者：
Nie, Zhihong;Fava, Daniele;Rubinstein, Michael
各向异性纳米颗粒的有序阵列显示出源自单个纳米棒的形状依赖性质的耦合的电子和光学性质。以可控和可预测的方式组织纳米棒为制造新材料和功能器件提供了一条途径。到目前为止，在纳米棒阵列的自组装方面已经取得了重大进展，但实现一系列不同的结构需要改变纳米颗粒的表面化学。我们组织金属纳米棒的结构与不同的几何形状，通过使用一个惊人的类比之间的两亲性阿坝三嵌段共聚物和亲水性纳米棒拴在两端的疏水聚合物链。自组装是可调的和可逆的，并且它仅通过改变组成块的溶剂质量来实现。这种方法提供了一种新的途径，各向异性纳米粒子的组织，通过使用的策略，建立了嵌段共聚物的自组装。
Organized arrays of anisotropic nanoparticles show electronic and optical properties that originate from the coupling of shape-dependent properties of the individual nanorods. The organization of nanorods in a controllable and predictable way provides a route to the fabrication of new materials and functional devices. So far, significant progress has been achieved in the self-assembly of nanorod arrays, yet the realization of a range of different structures requires changing the surface chemistry of the nanoparticles. We organized metal nanorods in structures with varying geometries by using a striking analogy between amphiphilic ABA triblock copolymers and the hydrophilic nanorods tethered-with hydrophobic polymer chains at both ends. The self-assembly was tunable and reversible and it was achieved solely by changing the solvent quality for the constituent blocks. This approach provides a new route to the organization of anisotropic nanoparticles by using the strategies that are established for the self-assembly of block copolymers.