Block Copolymer Templated Fabrication and Functionalization of Nanoraod Arrays

A-B嵌段共聚物的嵌段长度在引起纳米相分离的范围内，在聚合物B的基体中形成聚合物A的圆柱形结构域，将在固体衬底上制备薄膜。溶剂退火将允许产生具有高度的长程位置和方向顺序的图案。所得到的圆柱形畴的规则阵列具有（可调的）直径和纳米范围内的分离距离，并垂直于衬底表面，将被用作制造纳米棒或纳米线阵列的模板，这些纳米棒或纳米线来自不同类型的材料，包括（贵金属）金属、氧化物、半导体或导电/氧化还原活性聚合物。将采用MOCVD和湿化学方法对纳米棒阵列的生长进行评估。在这些纳米阵列所具有的各种有趣的物理特性中，我们将重点关注它们的光学特性（线性、非线性和集成），重点是表面等离子体光学研究，以及使用衍射光学结构。此外，这些阵列的高表面积将用于通过硅烷- (SiO2)或硫醇- (Au, Ag, GaAs)衍生化生成生物亲和性研究共价偶联配体（肽或寡核苷酸）的结合基质。

A-B block copolymers with block lengths in the range that induces nanophase-separation with the formation of cylindrical domains of polymer A in the matrix of polymer B will be prepared as thin films on solid substrates. Solvent-annealing will allow for the generation of patterns with a high degree of long range positional and orientational order. The resulting regular arrays of cylindrical domains with (tunable) diameters and separation distances in the nanometer range, and oriented normal to the substrate surface, will be used as templates for the fabrication of arrays of nanorods or nanowires from different types of materials, including (noble) metals, oxides, semiconductors, or conducting/redox-active polymers. MOCVD and wet chemical protocols for this growth of nanorod arrays will be employed and evaluated. Of the wide range of interesting physical properties that these nano arrays have, we will focus on their optical (linear, nonlinear and integrated) properties with an emphasis on surface plasmon optical investigations, as well as on using the structures for the diffractive optics. Additionally, the high surface area of these arrays will be used to generate binding matrices for bioaffinity studies covalently coupling ligands (peptides or oligonucleotides) via silane- (for SiO2) or thiol- (for Au, Ag GaAs) derivatization.