Two-Dimensional Ag Nanoparticle Tetramer Array for Surface-Enhanced   Raman Scattering Measurements

doi:10.1021/jp505160e

CORC > 北京大学 > 化学与分子工程学院

	Two-Dimensional Ag Nanoparticle Tetramer Array for Surface-Enhanced Raman Scattering Measurements
	Chen, Jing ; Gong, Yongji ; Shang, Jian ; Li, Jianlong ; Wang, Yu ; Wu, Kai
刊名	journal of physical chemistry c
	2014
关键词	SINGLE-MOLECULE DETECTION LARGE-SCALE HOT-SPOTS SPECTROSCOPY SILVER SERS TRIMERS HOTSPOT DIMERS PROOF
DOI	10.1021/jp505160e
英文摘要	A two-dimensional Ag nanoparticle tetramer array which served as a hotspot matrix for surface-enhanced Raman scattering detection of rhodamine 6G (R6G) molecules down to a concentration as low as 10(15) M was successfully fabricated by electrochemical deposition on an anodized aluminum substrate. The high detection sensitivity was attributed to both the electromagetic enhancement at the dense Ag nanoparticle tetramer hotspot matrix and chemical enhancement on the corrugated substrate. A single molecule dynamic adsorption behavior was experimentally sensed by the abrupt changes of the charateristic peak intensity and line shape in the spectroscopy when the R6G concentration was lowered to 10(15) M. Time-evolved spectroscopies revealed the adsorption behavior of either the single molecule in the nanogaps of 25 nm or multiple molecules in the nanogaps of 59 nm between the Ag nanoparticles.; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; SCI(E); EI; 0; ARTICLE; wangy@cqu.edu.cn; kaiwu@pku.edu.cn; 39; 22702-22710; 118
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/150381]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Chen, Jing,Gong, Yongji,Shang, Jian,et al. Two-Dimensional Ag Nanoparticle Tetramer Array for Surface-Enhanced Raman Scattering Measurements[J]. journal of physical chemistry c,2014.
APA	Chen, Jing,Gong, Yongji,Shang, Jian,Li, Jianlong,Wang, Yu,&Wu, Kai.(2014).Two-Dimensional Ag Nanoparticle Tetramer Array for Surface-Enhanced Raman Scattering Measurements.journal of physical chemistry c.
MLA	Chen, Jing,et al."Two-Dimensional Ag Nanoparticle Tetramer Array for Surface-Enhanced Raman Scattering Measurements".journal of physical chemistry c (2014).