Research Center for Biomimetic Functional Materials and Sensing Devices, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China.
Nanotechnology. 2013 Jun 14;24(23):235502. doi: 10.1088/0957-4484/24/23/235502. Epub 2013 May 13.
Regiospecific core-satellite assembly of gold nanoplates (AuNPs)/gold nanorods (AuNRs) can be fabricated via ss-DNA hybridization. SERS behavior of the DNA driven assembly has been explored from inducing transition between para-ATP and DMAB through plasmon-assisted catalysis, suggesting that the core-satellite assembly can be utilized as highly active optical substrate. Moreover, a Raman label tagged thymine-rich DNA functionalized AuNRs/AuNPs assembly can be employed as in situ SERS sensing of mercury ions at the ultrasensitive ppt level, which indicates that the core-satellite assembly is appropriate as a versatile SERS substrate for the application of optical chemical or biosensing.
通过 ss-DNA 杂交，可以制备金纳米板 (AuNPs)/金纳米棒 (AuNRs) 的区域特异性核-卫星组装体。通过等离子体辅助催化诱导 para-ATP 和 DMAB 之间的转变，研究了 DNA 驱动组装的 SERS 行为，表明核-卫星组装体可用作高活性光学基底。此外，拉曼标签标记的胸腺嘧啶丰富的 DNA 功能化 AuNRs/AuNPs 组装体可用作汞离子的原位 SERS 传感，在超灵敏的 ppt 水平下，表明核-卫星组装体适合作为一种通用的 SERS 基底，用于光学化学或生物传感的应用。
