title: A highly active SERS sensing substrate: core-satellite assembly of gold nanorods/nanoplates.
abstract: 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.
authors.affiliation: 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.
authors.forename: D D
authors.initials: DD
authors.lastname: Li
authors.forename: J
authors.initials: J
authors.lastname: Wang
authors.forename: G C
authors.initials: GC
authors.lastname: Zheng
authors.forename: J H
authors.initials: JH
authors.lastname: Liu
authors.forename: W H
authors.initials: WH
authors.lastname: Xu
mesh_terms: D004247:DNA / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D013059:Spectrum Analysis, Raman / Q000379:methods*
chemical_list: D006046:Gold; D004247:DNA