Department of Chemistry, University of Toronto, 80 Saint George street, Toronto, Ontario M5S 3H6, Canada.
Small. 2012 Mar 12;8(5):731-7. doi: 10.1002/smll.201101297. Epub 2012 Jan 9.
Nanomaterials with vectoral electromagnetic properties have potential applications in solar cells, plasmonic cavity resonators, light polarizers, and biosensing. Here a new, simple, solution-based method for producing nanomaterials comprising vertically aligned standing arrays of gold nanorods (NRs) end-functionalized with polymer ligands is reported. The method utilizes the side-by-side assembly of the NRs into large 2D superlattices, followed by the precipitation of the lattices on a solid substrate. The critical design rules for the self-assembly of superlattices are demonstrated, and they show the generality of the method by forming standing arrays from the NRs end-tethered with poly(N-vinylcarbazole) or with polystyrene molecules.
具有向量电磁特性的纳米材料在太阳能电池、等离激元腔共振器、光偏振器和生物传感等领域具有潜在的应用。在这里，我们报道了一种新的、简单的基于溶液的方法，用于制备纳米材料，这些纳米材料由垂直排列的金纳米棒（NRs）组成，其末端官能化有聚合物配体。该方法利用 NRs 的并排组装成大的二维超晶格，然后将超晶格沉淀在固体基底上。展示了超晶格自组装的关键设计规则，并通过将末端用聚（N-乙烯基咔唑）或聚苯乙烯分子键合的 NRs 形成直立阵列，证明了该方法的通用性。
