Energy-Level-Related Response of Cathodic Electrogenerated-Chemiluminescence of Self-Assembled CdSe/ZnS Quantum Dot Films

被引：45

作者：

Bao, Lei ^{[1
,2
,3
]}

Sun, Liangfeng ^{[4
,5
]}

Zhang, Zhi-Ling ^{[2
,3
]}

Jiang, Peng ^{[2
,3
]}

Wise, Frank W. ^{[4
]}

Abruna, Hector D. ^{[1
]}

Pang, Dai-Wen ^{[2
,3
]}

机构：

[1] Cornell Univ, Dept Chem & Chem Biol, Ithaca, NY 14853 USA

[2] Wuhan Univ, Coll Chem & Mol Sci,Minist Educ, Res Ctr Nanobiol & Nanomed MOE Innovat Platform 9, State Key Lab Virol,Key Lab Analyt Chem Biol & Me, Wuhan 430072, Peoples R China

[3] Wuhan Univ, Wuhan Inst Biotechnol, Wuhan 430072, Peoples R China

[4] Cornell Univ, Sch Appl & Engn Phys, Ctr Nanoscale Syst, Ithaca, NY 14853 USA

[5] Bowling Green State Univ, Dept Phys & Astron, Bowling Green, OH 43403 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 38期

基金：

中国国家自然科学基金;

关键词：

AQUEOUS-SOLUTION; ANODIC ELECTROCHEMILUMINESCENCE; SEMICONDUCTOR NANOCRYSTALS; COVALENT MODIFICATION; SENSING APPLICATION; CARBON ELECTRODES; CDS NANOPARTICLES; ELECTROCHEMISTRY; DNA; COREACTANT;

D O I：

10.1021/jp205419z

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：

A strategy for construction of a solid-state electrogenerated chemiluminescence (ECL) sensor based on a self-assembled film of core/shell structural CdSe/ZnS quantum dots (QDs) is presented in this work for the first time. The surface coverage of CdSe/ZnS QDs is about 2.2 x 10(12) NPs/cm(2), which is on the level of a submonolayer. This self-assembled CdSe/ZnS QD film has shown a strong and efficient cathodic ECL with peroxydisulfate and hydroperoxide as coreactants in aqueous solution. The quenching effect with hydroperoxide as the coreactant reveals an energy-level-related mechanism for the QD ECL processes. The energy levels of QDs and coreactants determine ECL responses. This insight provides a universal guide to select proper coreactants for the QD ECL sensors. In addition, the self-assembled CdSe/ZnS QD ECL sensor has the potential to detect energy-level-related analytes, such as dopamine.

引用

页码：18822 / 18828

页数：7

共 52 条

[1] Electrochemistry and electrogenerated chemiluminescence of films of silicon nanoparticles in aqueous solution [J].

Bae, Yoonjung ;

Lee, Doh C. ;

Rhogojina, Elena V. ;

Jurbergs, David C. ;

Korgel, Brian A. ;

Bard, Allen J. .

NANOTECHNOLOGY, 2006, 17 (15) :3791-3797

[2] ELECTROCHEMICAL BONDING OF AMINES TO CARBON-FIBER SURFACES TOWARD IMPROVED CARBON-EPOXY COMPOSITES [J].

BARBIER, B ;

PINSON, J ;

DESARMOT, G ;

SANCHEZ, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1990, 137 (06) :1757-1764

[3] Electrochemistry and electrogenerated chemiluminescence of semiconductor nanocrystals in solutions and in films [J].

Bard, AJ ;

Ding, ZF ;

Myung, N .

SEMICONDUCTOR NANOCRYSTALS AND SILICATE NAOPARTICLES, 2005, 118 :1-57

[4] Semiconductor nanocrystals as fluorescent biological labels [J].

Bruchez, M ;

Moronne, M ;

Gin, P ;

Weiss, S ;

Alivisatos, AP .

SCIENCE, 1998, 281 (5385) :2013-2016

[5] Silica coated quantum dots:: a new tool for electrochemical and optical glucose detection [J].

Cavaliere-Jaricot, Sara ;

Darbandi, Masih ;

Kucur, Erol ;

Nann, Thomas .

MICROCHIMICA ACTA, 2008, 160 (03) :375-383

[6] Quantum dot bioconjugates for ultrasensitive nonisotopic detection [J].

Chan, WCW ;

Nie, SM .

SCIENCE, 1998, 281 (5385) :2016-2018

[7] Low-Potential Electrochemiluminescent Sensing Based on Surface Unpassivation of CdTe Quantum Dots and Competition of Analyte Cation to Stabilizer [J].

Cheng, Lingxiao ;

Liu, Xuan ;

Lei, Jianping ;

Ju, Huangxian .

ANALYTICAL CHEMISTRY, 2010, 82 (08) :3359-3364

[8] Photophysics of dopamine-modified quantumdots and effects on biological systems [J].

Clarke, SJ ;

Hollmann, CA ;

Zhang, ZJ ;

Suffern, D ;

Bradforth, SE ;

Dimitrijevic, NM ;

Minarik, WG ;

Nadeau, JL .

NATURE MATERIALS, 2006, 5 (05) :409-417

[9] Electroluminescence from single monolayers of nanocrystals in molecular organic devices [J].

Coe, S ;

Woo, WK ;

Bawendi, M ;

Bulovic, V .

NATURE, 2002, 420 (6917) :800-803

[10] Photoenhancement of lifetimes in CdSe/ZnS and CdTe quantum dot-dopamine conjugates [J].

Cooper, Daniel R. ;

Suffern, Diana ;

Carlini, Lina ;

Clarke, Samuel J. ;

Parbhoo, Rupesh ;

Bradforth, Stephen E. ;

Nadeau, Jay L. .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2009, 11 (21) :4298-4310

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