Electrogenerated Chemiluminescence from PbS Quantum Dots

Sun, Lixing; Hyun, Byung‐Ryool; Bartnik, Adam; Zhong, Yu‐Wu; Reed, Jason; Pang, Dai‐Wen; Abruña, Héctor D.; Malliaras, George G.; Wise, Frank W.

doi:10.1021/nl803459b

Cited by 134 publications

(143 citation statements)

References 23 publications

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“…[6][7][8] With the advances of the synthetic strategies of NIR-emitting NCs, these NCs have emerged as good candidates to complement visible-light-emitting ECL emitters. [9][10][11] However, higher ECL-trigging energies for NIR-emitting NCs [9][10][11] are often accompanied by undesirable electrochemical interference, and the limited efficiency [9] also hinders possible applications.…”

mentioning

confidence: 99%

Efficient Near‐Infrared Electrochemiluminescence from CdTe Nanocrystals with Low Triggering Potential and Ultrasensitive Sensing Ability

Liang

Shen

Zou

et al. 2011

Chemistry A European J

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mentioning

confidence: 99%

Efficient Near‐Infrared Electrochemiluminescence from CdTe Nanocrystals with Low Triggering Potential and Ultrasensitive Sensing Ability

Liang

Shen

Zou

et al. 2011

Chemistry A European J

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“…Other new biocompatible luminol ECL biosensor based on enzyme/titanate NTs/chitosan composite film (Fig. 7.3) [94,95] and polymeric luminol as the luminophore instead of luminol in solution [96] with excellent stability and high sensitivity was developed for the determination of choline. In the fabrication of former ECL biosensor, biocompatible titanate nanotubes (TNTs) were immobilized on a chitosan-modified GCE via electrostatic adsorption.…”

Section: Life Sciences/biomedical Analysismentioning

confidence: 99%

Applications of Electrochemiluminescence

Parveen

Aslam

et al. 2013

SpringerBriefs in Molecular Science

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The development of electrochemiluminescence (ECL) applications is a growing field, having the potential advantages of ECL over conventional chemiluminescence. ECL has found various applications in immunoassays, DNA probe assays, and aptasensors by employing ECL-active species as labels on biological molecules. The recent use of ECL to detect many chemically, biochemically, clinically, and environmentally important analytes is reviewed.

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“…Semiconductor nanocrystals, also known as quantum dots (QDs), have also been widely studied. Few years back, ECL from CdSe [92], CdS [93], CdTe [53], and ZnS [94], PbS and ZnSe QDs [95,96] was observed which displayed applications in the field of biosensors.…”

Section: Nanoparticle Systemsmentioning

confidence: 99%

ECL Luminophores

Parveen¹,

Aslam²,

Hu³

et al. 2013

SpringerBriefs in Molecular Science

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Finding new luminophores with higher ECL efficiencies and modifying a moiety of the emitter to use it for the labeling of biomolecules are the two driving forces that lead to the synthesis of a number of new ECL-emitting species in the past several years. Three categories of luminophores are discussed in this chapter, including (a) inorganic systems, which mainly contain organometallic complexes; (b) organic systems, which cover polycyclic aromatic hydrocarbons (PAHs); and (c) semiconductor nanoparticle systems.Keywords Luminophores Á Organic systems Á Inorganic systems Á Dendrimers Á Nanoparticle systems Á Nanoclusters Á Carbon nanoparticles Á Semiconductor nanocrystals Á Quantum dots Since the discovery of ECL process, there has been considerable advancement in ECL system. Different types of ECL systems have been introduced, such as organic, inorganic, and nanoparticle systems. Organic SystemsThe first exhaustive study on ECL involved organic systems [1][2][3]. In the early ages of ECL, PAHs, rubrene, and DPA have been studied extensively owing to their high fluorescence quantum yields and stable radical cations and anions in aprotic media. Some other organic systems, such as luminol [4], acridinium esters [5], polymers [6][7][8], and siloles [9], have also been widely explored. The reader is referred to the tremendous reviews [10][11][12] and ECL monograph [13] for more thorough study about organic systems. Acridinium esters, taking example of lucigenin (N,N'-dimethyl-9,9-bisacridinium) is reported ECL active [14] in the presence of hydrogen peroxide [15] and has been applied for the detection of riboflavin [16], human chorionic gonadotropin [17], and hemin [18]. The ECL reaction of methyl-9-(p-formylphenyl)acridinium carboxylate fluorosulfonate (MFPA) gives intense ECL signal and is employed as a label in bioassays [17]. Lucigenin ECL has also been extended to surfaces [19]. Self-assembled monolayers (SAMs) modified electrodes and solutions containing Triton X-100 surfactant molecules caused the enhancement in ECL of lucigenin.Fluorene-substituted PAHs have been investigated with enhanced ECL efficiency and stability [20]. Derivatives of DPA, pyrene, and anthracene were produced by using fluorene as a capping agent. These molecules have high PL quantum yields and can generate stable radical ions. On introducing the fluorene groups, steric hindrance is imparted, preventing interchromophore interactions and blocking the active position of PAH cores subject to electrochemical decomposition. Due to the electrochemical instability of its cationic radical, pyrene molecule displays poor ECL properties. Hence, a strategy for ECL enhancement and radical stability by peripheral multidonors on pyrene derivatives has been adopted in which the ECL efficiencies of pyrene derivatives increase in proportion to the number of peripheral N, N-dimethyl aniline donors [21].An ECL laser offers numerous advantages over traditional techniques, including tunability, lack of additional source and range of available wavelength...

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Electrogenerated Chemiluminescence from PbS Quantum Dots

Cited by 134 publications

References 23 publications

Efficient Near‐Infrared Electrochemiluminescence from CdTe Nanocrystals with Low Triggering Potential and Ultrasensitive Sensing Ability

Efficient Near‐Infrared Electrochemiluminescence from CdTe Nanocrystals with Low Triggering Potential and Ultrasensitive Sensing Ability

Applications of Electrochemiluminescence

ECL Luminophores

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