Pyrene-Functionalized Ruthenium Nanoparticles as Effective Chemosensors for Nitroaromatic Derivatives

被引：88

作者：

Chen, Wei ^{[1
]}

Zuckerman, Nathaniel B. ^{[1
]}

Konopelski, Joseph P. ^{[1
]}

Chen, Shaowei ^{[1
]}

机构：

[1] Univ Calif Santa Cruz, Dept Chem & Biochem, Santa Cruz, CA 95064 USA

来源：

ANALYTICAL CHEMISTRY | 2010年 / 82卷 / 02期

基金：

美国国家科学基金会;

关键词：

EXPLOSIVES; TNT; SURFACE; POLYMERS; SENSORS;

D O I：

10.1021/ac902394s

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学];

摘要：

Pyrene-functionalized Ru nanoparticles were synthesized by olefin metathesis reactions of carbene-stabilized Ru nanoparticles with 1-vinylpyrene and 1-allylpyrene (the resulting particles were denoted as Ru=VPy and Ru=APy, respectively) and examined as sensitive chemosensors for the detection of nitroaromatic compounds, such as 2,4,6-trinitrotoluene (TNT), 2,4-dinitrotoluene (2,4-DNT), 2,6-dinitrotoluene (2,6-DNT), 1-chloro-nitrobenzene (CNB), and nitrobenzene (NB), by their effective quenching of the nanoparticle fluorescence. It was found that the detection sensitivity increased with increasing nitration of the molecules. Additionally, in comparison to monomeric pyrene derivatives, both Ru=VPy and Ru=APy nanoparticles exhibited markedly enhanced performance in the detection of nitroaromatic explosives, most probably as a result of the enhanced collision frequency between the fluorophores and the quencher molecules. Furthermore, Ru=VPy nanoparticles displayed much higher sensitivity (down to the nanomolar regime for TNT) than Ru=APy in the detection of these nitroaromatic explosives, which was ascribed to the extended intraparticle conjugation that provided efficient pathways for energy/electron transfer and consequently amplified the analyte binding events.

引用

页码：461 / 465

页数：5

共 31 条

[1]

Badley R., 1983, FLUORESCENCE SPECTRO

[2]

Pyrene-Functionalised, Alternating Copolyimide for Sensing Nitroaromatic Compounds [J].

Burattini, Stefano ;

Colquhoun, Howard M. ;

Greenland, Barnaby W. ;

Hayes, Wayne ;

Wade, Mathew .

MACROMOLECULAR RAPID COMMUNICATIONS, 2009, 30 (06) :459-463

[3]

Nanoparticle-mediated intervalence transfer [J].

Chen, Wei ;

Chen, Shaowei ;

Ding, Feizhi ;

Wang, Haobin ;

Brown, Lauren E. ;

Konopelski, Joseph P. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (36) :12156-12162

[4]

Chen W, 2006, CHEM MATER, V18, P5253, DOI [10.1021/cm061595l, 10.1021/cm0615951]

[5]

Pyrene-Functionalized Ruthenium Nanoparticles: Novel Fluorescence Characteristics from Intraparticle Extended Conjugation [J].

Chen, Wei ;

Zuckerman, Nathaniel B. ;

Lewis, James W. ;

Konopelski, Joseph P. ;

Chen, Shaowei .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (39) :16988-16995

[6]

Intervalence transfer of ferrocene moieties adsorbed on electrode surfaces by a conjugated linkage [J].

Chen, Wei ;

Brown, Lauren E. ;

Konopelski, Joseph P. ;

Chen, Shaowei .

CHEMICAL PHYSICS LETTERS, 2009, 471 (4-6) :283-285

[7]

A novel metallic complex as photoreagent for the DNA guanine bases: Osmium(II) tris(tetraazaphenanthrene) [J].

Content, S ;

KirschDeMesmaeker, A .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (06) :1089-1094

[8]

EXPLOSIVES DETECTION FOR AVIATION SECURITY [J].

FAINBERG, A .

SCIENCE, 1992, 255 (5051) :1531-1537

[9]

Potential analytical applications of differential fluorescence quenching: pyrene monomer and excimer emissions as sensors for electron deficient molecules [J].

Focsaneanu, KS ;

Scaiano, JC .

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, 2005, 4 (10) :817-821

[10]

Fluorescence quenching as an indirect detection method for nitrated explosives [J].

Goodpaster, JV ;

McGuffin, VL .

ANALYTICAL CHEMISTRY, 2001, 73 (09) :2004-2011

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