基于 3D 胶体晶体制备二维有序金纳米碗阵列的新颖简单途径。

Novel and simple route to fabricate 2D ordered gold nanobowl arrays based on 3D colloidal crystals.

机构信息

State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, PR China.

出版信息

Langmuir. 2011 Nov 1;27(21):13308-13. doi: 10.1021/la203158q. Epub 2011 Oct 6.

DOI:10.1021/la203158q

PMID:21932785

Abstract

In this study, we present a new method to fabricate large-area two-dimensionally (2D) ordered gold nanobowl arrays based on 3D colloidal crystals by wet chemosynthesis, which combines the advantages of a very simple preparation and an applicability to "real" nanomaterials. By combination of in situ growth of gold nanoshell (GNSs) arrays based on three-dimensional (3D) colloidal silica crystals, a monolayer ordered reversed GNS array (2D ordered GNS array) was conveniently manufactured by an acrylic ester modified biaxial oriented polypropylene (BOPP). 2D ordered gold nanobowl array with adjustable periodic holes, good stability, reproducibility, and repeatability could be obtained when the silica core was etched by HF solution. The surface-enhanced Raman scattering (SERS) enhancement factor (EF) of this 2D ordered gold nanobowl array could reach 1.27 × 10(7), which shows high SERS enhancing activity and can be used as a universal SERS substrate.

摘要

在这项研究中，我们提出了一种新的方法，通过湿化学合成，基于 3D 胶体晶体制造大面积二维（2D）有序金纳米碗阵列，该方法结合了非常简单的制备和适用于“真实”纳米材料的优点。通过在三维（3D）胶体硅晶体上原位生长金纳米壳（GNSs）阵列，通过丙烯酸酯改性双轴取向聚丙烯（BOPP）方便地制造了单层有序反向 GNS 阵列（2D 有序 GNS 阵列）。当用 HF 溶液刻蚀硅核时，可获得具有可调周期性孔、良好稳定性、重现性和可重复性的 2D 有序金纳米碗阵列。该 2D 有序金纳米碗阵列的表面增强拉曼散射（SERS）增强因子（EF）可达 1.27×10（7），表现出高 SERS 增强活性，可作为通用 SERS 基底。