Ou Jiemei, Tan Huijun, Chen Xudong, Chen Zhong
Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Engineering Technology Research Center for High-Performance Organic and Polymer Photoelectric Functional Films, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China.
National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, Guangzhou 510500, China.
Nanomaterials (Basel). 2018 Dec 1;8(12):994. doi: 10.3390/nano8120994.
Gold nanocrystals have attracted considerable attention due to their excellent physical and chemical properties and their extensive applications in plasmonics, spectroscopy, biological detection, and nanoelectronics. Gold nanoparticles are able to be readily modified and arranged with DNA materials and protein molecules, as well as viruses. Particularly DNA materials with the advantages endowed by programmability, stability, specificity, and the capability to adapt to functionalization, have become the most promising candidates that are widely utilized for building plenty of discrete gold nanoarchitectures. This review highlights recent advances on the DNA-based assembly of gold nanostructures and especially emphasizes their resulted superior optical properties and principles, including plasmonic extinction, plasmonic chirality, surface enhanced fluorescence (SEF), and surface-enhanced Raman scattering (SERS).
金纳米晶体因其优异的物理和化学性质以及在等离子体学、光谱学、生物检测和纳米电子学中的广泛应用而备受关注。金纳米颗粒能够很容易地与DNA材料、蛋白质分子以及病毒进行修饰和组装。特别是具有可编程性、稳定性、特异性以及功能化能力等优势的DNA材料，已成为构建大量离散金纳米结构最有前景的候选材料，并被广泛应用。本综述重点介绍了基于DNA的金纳米结构组装的最新进展，尤其强调了其产生的优异光学性质和原理，包括等离子体消光、等离子体手性、表面增强荧光（SEF）和表面增强拉曼散射（SERS）。
