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

doi:10.1021/jp505160e

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	Two-Dimensional Ag Nanoparticle Tetramer Array for Surface-Enhanced Raman Scattering Measurements
	Chen, Jing 1; Gong, Yongji 1; Shang, Jian 1; Li, Jianlong 1; Wang, Yu ; Wu, Kai 1,3
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2014-10-02
卷号	118 期号:39 页码:22702-22710
ISSN号	1932-7447
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.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000342652000034
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/52591]
专题	中国科学院化学研究所
通讯作者	Wang, Yu
作者单位	1.Peking Univ, Coll Chem & Mol Engn, BNLMS, SKLSCUSS, Beijing 100871, Peoples R China 2.Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China 3.SPURc, Singapore 138602, Singapore
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,2014,118(39):22702-22710.
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,118(39),22702-22710.
MLA	Chen, Jing,et al."Two-Dimensional Ag Nanoparticle Tetramer Array for Surface-Enhanced Raman Scattering Measurements".JOURNAL OF PHYSICAL CHEMISTRY C 118.39(2014):22702-22710.