Surface plasmon resonance of colloidal Au-modified gold films

被引：161

作者：

Lyon, LA ^{[1
]}

Musick, MD ^{[1
]}

Smith, PC ^{[1
]}

Reiss, BD ^{[1
]}

Peña, DJ ^{[1
]}

Natan, MJ ^{[1
]}

机构：

[1] Penn State Univ, Dept Chem, University Pk, PA 16802 USA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1999年 / 54卷 / 1-2期

基金：

美国国家卫生研究院; 美国国家科学基金会;

关键词：

colloidal Au; plasmon; biocytin;

D O I：

10.1016/S0925-4005(98)00329-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The effect of colloidal Au nanoparticle immobilization on surface plasmon resonance (SPR) reflectivity is reported. Immobilization of 25 nm diameter colloidal Au on to an evaporated Au film results in a large shift in plasmon angle, a broadened plasmon resonance and an increase in minimum reflectance. This results in increased SPR sensitivity, demonstrated in several ways, including a sandwich immunoassay for human IgG, enlargement of a 1.4 nm diameter Au cluster, and detection of displacement of surface-bound biotinylated colloidal Au by free biocytin in solution. Similarly large changes in reflectivity are realized upon binding of colloidal Au to electrolessly deposited Au films prepared entirely by wet-chemical methods. These results represent potentially significant advances in the generality and sensitivity of SPR. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：118 / 124

页数：7

共 31 条

[1] Real-time measurement of nucleic-acid hybridization using evanescent-wave sensors: steps towards the genosensor [J].

Bier, FF ;

Kleinjung, F ;

Scheller, FW .

SENSORS AND ACTUATORS B-CHEMICAL, 1997, 38 (1-3) :78-82

[2] Morphology-dependent electrochemistry of cytochrome c at Au colloid-modified SnO2 electrodes [J].

Brown, KR ;

Fox, AP ;

Natan, MJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (05) :1154-1157

[3] Hydroxylamine seeding of colloidal Au nanoparticles in solution and on surfaces [J].

Brown, KR ;

Natan, MJ .

LANGMUIR, 1998, 14 (04) :726-728

[4]

BROWN KR, IN PRESS CHEM MAT

[5] DNA binding and hybridization on gold and derivatized surfaces [J].

Caruso, F ;

Rodda, E ;

Furlong, DN ;

Haring, V .

SENSORS AND ACTUATORS B-CHEMICAL, 1997, 41 (1-3) :189-197

[6] Experimental data from a trace metal sensor combining surface plasmon resonance with anodic stripping voltammetry [J].

Chinowsky, TM ;

Saban, SB ;

Yee, SS .

SENSORS AND ACTUATORS B-CHEMICAL, 1996, 35 (1-3) :37-43

[7] Ag-clad Au nanoparticles: Novel aggregation, optical, and surface-enhanced Raman scattering properties [J].

Freeman, RG ;

Hommer, MB ;

Grabar, KC ;

Jackson, MA ;

Natan, MJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (02) :718-724

[8] SELF-ASSEMBLED METAL COLLOID MONOLAYERS - AN APPROACH TO SERS SUBSTRATES [J].

FREEMAN, RG ;

GRABAR, KC ;

ALLISON, KJ ;

BRIGHT, RM ;

DAVIS, JA ;

GUTHRIE, AP ;

HOMMER, MB ;

JACKSON, MA ;

SMITH, PC ;

WALTER, DG ;

NATAN, MJ .

SCIENCE, 1995, 267 (5204) :1629-1632

[9] CONTROLLED NUCLEATION FOR REGULATION OF PARTICLE-SIZE IN MONODISPERSE GOLD SUSPENSIONS [J].

FRENS, G .

NATURE-PHYSICAL SCIENCE, 1973, 241 (105) :20-22

[10] Optical evanescent wave methods for the study of biomolecular interactions [J].

Garland, PB .

QUARTERLY REVIEWS OF BIOPHYSICS, 1996, 29 (01) :91-117

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