Gold nanoparticle based surface enhanced fluorescence for detection of organophosphorus agents

被引：55

作者：

Dasary, Samuel S. R. ^{[1
]}

Rai, Uma S. ^{[1
]}

Yu, Hongtao ^{[1
]}

Anjaneyulu, Yerramilli ^{[1
]}

Dubey, Madan ^{[1
]}

Ray, Paresh Chandra ^{[1
]}

机构：

[1] Jackson State Univ, Dept Chem, Jackson, MS 39217 USA

来源：

CHEMICAL PHYSICS LETTERS | 2008年 / 460卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2008.05.082

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Organophosphorus agents (OPA) represent a serious concern to public safety as nerve agents and pesticides. Here we report the development of gold nanoparticle based surface enhanced fluorescence (NSEF) spectroscopy for rapid and sensitive screening of organophosphorus agents. Fluorescent from Eu3+ ions that are bound within the electromagnetic field of gold nanoparticles exhibit a strong enhancement. In the presence of OPA, Eu3+ ions are released from the gold nanoparticle surface and thus a very distinct fluorescence signal change was observed. We discussed the mechanism of fluorescence enhancement and the role of OPA for fluorescence intensity change in the presence of gold nanoparticles. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：187 / 190

页数：4

共 35 条

[1] Fabrication of stable bimetallic nanostructures on Nafion membranes for optical applications
Alvarez-Puebla, Ramon A.
Nazri, G. -Abbas
Aroca, Ricardo F.
[J]. JOURNAL OF MATERIALS CHEMISTRY, 2006, 16 (28) : 2921 - 2924
[2] Metal-enhanced fluorescence-based RNA sensing
Aslan, K
Huang, J
Wilson, GM
Geddes, CD
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (13) : 4206 - 4207
[3] Fluorescence enhancement in hot spots of AFM-designed gold nanoparticle sandwiches
Bek, Alpan
Jansen, Reiner
Ringler, Moritz
Mayilo, Sergiy
Klar, Thomas A.
Feldmann, Jochen
[J]. NANO LETTERS, 2008, 8 (02) : 485 - 490
[4] Microbead chemical switches: An approach to detection of reactive organophosphate chemical warfare agent vapors
Bencic-Nagale, S
Sternfeld, T
Walt, DR
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (15) : 5041 - 5048
[5] Detection of sequence-specific protein-DNA interactions via surface enhanced resonance Raman scattering
Bonham, Andrew J.
Braun, Gary
Pavel, Ioana
Moskovits, Martin
Reich, Norbert O.
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (47) : 14572 - +
[6] Carsten S. N., 2005, NAT BIOTECHNOL, V23, P741
[7] Fluorescent sensors for organophosphorus nerve agent mimics
Dale, TJ
Rebek, J
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (14) : 4500 - 4501
[8] DARBHA GK, 2008, J AM CHEM S IN PRESS
[9] Gold-nanorod-based sensing of sequence specific HIV-1 virus DNA by using hyper-Rayleigh scattering spectroscopy
Darbha, Gopala Krishna
Rai, Uma Shanker
Singh, Anant Kumar
Ray, Paresh Chandra
[J]. CHEMISTRY-A EUROPEAN JOURNAL, 2008, 14 (13) : 3896 - 3903
[10] Gold nanoparticle-based miniaturized nanomaterial surface energy transfer probe for rapid and ultrasensitive detection of mercury in soil, water, and fish
Darbha, Gopala Krishna
Ray, Anandhi
Ray, Paresh Chandra
[J]. ACS NANO, 2007, 1 (03) : 208 - 214

← 1 2 3 4 →