Synthesis of ultrathin silver shell on gold core for reducing substrate effect of LSPR sensor

被引：33

作者：

Deng, Jiajia ^{[1
]}

Du, Jian ^{[1
]}

Wang, Ye ^{[1
]}

Tu, Yifeng ^{[1
]}

Di, Junwei ^{[1
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Jiangsu, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2011年 / 13卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Au@Ag core-shell nanostructrue; Electrochemical deposition; Ultrathin shell; Plasmonic sensor; SURFACE-PLASMON RESONANCE; OPTICAL-PROPERTIES; REFRACTIVE-INDEX; TIN OXIDE; NANOPARTICLES; ELECTRODEPOSITION; NANORODS; GLASS; SHAPE; SIZE;

D O I：

10.1016/j.elecom.2011.10.010

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The refractive index sensitivity of gold@silver core-shell nanoparticles on indium tin oxide glass was investigated. The thin silver shell was electrodeposited on gold surface by controlling the applied potential and electrodeposition cycles. The refractive index sensitivity at gold@silver core-shell nanoparticles with ultrathin silver shell (similar to 0.7 nm) to bulk refractive index was enhanced 76% than that of the Au nanoparticles (Au core) deposited on ITO substrate. This core-shell platform was also applied to detection of biomolecular interactions using the streptavidin-biotin assay. The strategy would reduce greatly the substrate effect of plasmonic sensors. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1517 / 1520

页数：4

共 25 条

[1] Preparation of AucoreAgshell nanorods and characterization of their surface plasmon resonances [J].

Ah, CS ;

Do Hong, S ;

Jang, DJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (33) :7871-7873

[2] Synthesis and Optical Properties of Hybrid and Alloy Plasmonic Nanoparticles [J].

Cortie, Michael B. ;

McDonagh, Andrew M. .

CHEMICAL REVIEWS, 2011, 111 (06) :3713-3735

[3] Label-free optical biosensor based on localized surface plasmon resonance of twin-linked gold nanoparticles electrodeposited on ITO glass [J].

Deng, Jiajia ;

Song, Yan ;

Wang, Yuan ;

Di, Junwei .

BIOSENSORS & BIOELECTRONICS, 2010, 26 (02) :615-619

[4] Enhanced Nanoplasmonic Optical Sensors with Reduced Substrate Effect [J].

Dmitriev, Alexandre ;

Hagglund, Carl ;

Chen, Si ;

Fredriksson, Hans ;

Pakizeh, Tavakol ;

Kall, Mikael ;

Sutherland, Duncan S. .

NANO LETTERS, 2008, 8 (11) :3893-3898

[5] Label-free Biosensing Based on Single Gold Nanostars as Plasmonic Transducers [J].

Dondapati, Srujan K. ;

Sau, Tapan K. ;

Hrelescu, Calin ;

Klar, Thomas A. ;

Stefani, Fernando D. ;

Feldmann, Jochen .

ACS NANO, 2010, 4 (11) :6318-6322

[6] Label-free detection of peptide nucleic acid-DNA hybridization using localized surface plasmon resonance based optical biosensor [J].

Endo, T ;

Kerman, K ;

Nagatani, N ;

Takamura, Y ;

Tamiya, E .

ANALYTICAL CHEMISTRY, 2005, 77 (21) :6976-6984

[7] Silver Nanoparticles on a Plastic Platform for Localized Surface Plasmon Resonance Biosensing [J].

Fan, Meikun ;

Thompson, Matthew ;

Andrade, Maria Luiza ;

Brolo, Alexandre G. .

ANALYTICAL CHEMISTRY, 2010, 82 (15) :6350-6352

[8] Electrochemical synthesis of gold nanoparticles onto indium tin oxide glass and application in biosensors [J].

Hu, Yanling ;

Song, Yan ;

Wang, Yuan ;

Di, Junwei .

THIN SOLID FILMS, 2011, 519 (19) :6605-6609

[9] The optical properties of metal nanoparticles: The influence of size, shape, and dielectric environment [J].

Kelly, KL ;

Coronado, E ;

Zhao, LL ;

Schatz, GC .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (03) :668-677

[10] Sensing characteristics of NIR localized surface plasmon resonances in gold nanorings for application as ultrasensitive biosensors [J].

Larsson, Elin M. ;

Alegret, Joan ;

Kall, Mikael ;

Sutherland, Duncan S. .

NANO LETTERS, 2007, 7 (05) :1256-1263

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