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Cao Z, Li C, Shu Y, Zhu M, Su B, Qin H, Peng X. Unraveling Mechanisms of Highly Efficient Yet Stable Electrochemiluminescence from Quantum Dots. J Am Chem Soc 2023; 145:26425-26434. [PMID: 37976033 DOI: 10.1021/jacs.3c10556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
With CdSe/CdS/ZnS core/shell/shell quantum dots (QDs) as the model system, time- and potential-resolved spectroelectrochemical measurements are successfully applied for studying the general mechanisms and kinetics of electrochemiluminescence (ECL) generation. The rate constant of electron injection from the cathode into a QD to form a negatively charged QD (QD-) increases monotonically from -0.88 V to -1.2 V (vs Ag/AgCl). Mainly due to the deep LUMO of the QDs, the resulting QD- as the key intermediate for ECL generation is structurally stable and possesses very slow spontaneous deionization channels. The latter (the main non-ECL channels) are usually 3-4 orders of magnitude slower than the rate constant of the successive hole injection from an active co-reactant into a QD-. The kinetic studies quantify the internal ECL quantum yield of ideal QD ECL emitters to be nearly identical to that of photoluminescence, which is near unity for the current system. Identification of the key intermediate, discovery of the related elementary steps, and determination of all rate constants not only establish a general framework for understanding ECL generation but also offer basic design rules for ECL emitters.
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Affiliation(s)
- Zhiyuan Cao
- Key Laboratory of Excited-State Materials of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Chuyue Li
- Key Laboratory of Excited-State Materials of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yufei Shu
- Key Laboratory of Excited-State Materials of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Meiyi Zhu
- Key Laboratory of Excited-State Materials of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Bin Su
- Key Laboratory of Excited-State Materials of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Haiyan Qin
- Key Laboratory of Excited-State Materials of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xiaogang Peng
- Key Laboratory of Excited-State Materials of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
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Sun H, Zhou P, Su B. Electrochemiluminescence of Semiconductor Quantum Dots and Its Biosensing Applications: A Comprehensive Review. BIOSENSORS 2023; 13:708. [PMID: 37504107 PMCID: PMC10377090 DOI: 10.3390/bios13070708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/26/2023] [Accepted: 07/03/2023] [Indexed: 07/29/2023]
Abstract
Electrochemiluminescence (ECL) is the chemiluminescence triggered by electrochemical reactions. Due to the unique excitation mode and inherent low background, ECL has been a powerful analytical technique to be widely used in biosensing and imaging. As an emerging ECL luminophore, semiconductor quantum dots (QDs) have apparent advantages over traditional molecular luminophores in terms of luminescence efficiency and signal modulation ability. Therefore, the development of an efficient ECL system with QDs as luminophores is of great significance to improve the sensitivity and detection flux of ECL biosensors. In this review, we give a comprehensive summary of recent advances in ECL using semiconductor QDs as luminophores. The luminescence process and ECL mechanism of semiconductor QDs with various coreactants are discussed first. Specifically, the influence of surface defects on ECL performance of semiconductor QDs is emphasized and several typical ECL enhancement strategies are summarized. Then, the applications of semiconductor QDs in ECL biosensing are overviewed, including immunoassay, nucleic acid analysis and the detection of small molecules. Finally, the challenges and prospects of semiconductor QDs as ECL luminophores in biosensing are featured.
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Affiliation(s)
- Hui Sun
- Key Laboratory of Excited-State Materials of Zhejiang Province, Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Ping Zhou
- Key Laboratory of Excited-State Materials of Zhejiang Province, Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Bin Su
- Key Laboratory of Excited-State Materials of Zhejiang Province, Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
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3
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Feng Y, Wang N, Ju H. Electrochemiluminescence biosensing and bioimaging with nanomaterials as emitters. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1329-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sanmartín-Matalobos J, Bermejo-Barrera P, Aboal-Somoza M, Fondo M, García-Deibe AM, Corredoira-Vázquez J, Alves-Iglesias Y. Semiconductor Quantum Dots as Target Analytes: Properties, Surface Chemistry and Detection. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2501. [PMID: 35889725 PMCID: PMC9318497 DOI: 10.3390/nano12142501] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 07/17/2022] [Accepted: 07/19/2022] [Indexed: 02/04/2023]
Abstract
Since the discovery of Quantum Dots (QDs) by Alexey I. Ekimov in 1981, the interest of researchers in that particular type of nanomaterials (NMs) with unique optical and electrical properties has been increasing year by year. Thus, since 2009, the number of scientific articles published on this topic has not been less than a thousand a year. The increasing use of QDs due to their biomedical, pharmaceutical, biological, photovoltaics or computing applications, as well as many other high-tech uses such as for displays and solid-state lighting (SSL), has given rise to a considerable number of studies about its potential toxicity. However, there are a really low number of reported studies on the detection and quantification of QDs, and these include ICP-MS and electrochemical analysis, which are the most common quantification techniques employed for this purpose. The knowledge of chemical phenomena occurring on the surface of QDs is crucial for understanding the interactions of QDs with species dissolved in the dispersion medium, while it paves the way for a widespread use of chemosensors to facilitate its detection. Keeping in mind both human health and environmental risks of QDs as well as the scarcity of analytical techniques and methodological approaches for their detection, the adaptation of existing techniques and methods used with other NMs appears necessary. In order to provide a multidisciplinary perspective on QD detection, this review focused on three interrelated key aspects of QDs: properties, surface chemistry and detection.
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Affiliation(s)
- Jesús Sanmartín-Matalobos
- Coordination and Supramolecular Chemistry Group (SupraMetal), Department of Inorganic Chemistry, Faculty of Chemistry, Institute of Materials (iMATUS), Universidade de Santiago de Compostela, Avenida das Ciencias s/n, 15782 Santiago de Compostela, Spain; (M.F.); (J.C.-V.); (Y.A.-I.)
| | - Pilar Bermejo-Barrera
- Trace Element, Speciation and Spectroscopy Group (GETEE), Department of Analytical Chemistry, Nutrition and Bromatology, Faculty of Chemistry, Institute of Materials (iMATUS), Universidade de Santiago de Compostela, Avenida das Ciencias s/n, 15782 Santiago de Compostela, Spain; (P.B.-B.); (M.A.-S.)
| | - Manuel Aboal-Somoza
- Trace Element, Speciation and Spectroscopy Group (GETEE), Department of Analytical Chemistry, Nutrition and Bromatology, Faculty of Chemistry, Institute of Materials (iMATUS), Universidade de Santiago de Compostela, Avenida das Ciencias s/n, 15782 Santiago de Compostela, Spain; (P.B.-B.); (M.A.-S.)
| | - Matilde Fondo
- Coordination and Supramolecular Chemistry Group (SupraMetal), Department of Inorganic Chemistry, Faculty of Chemistry, Institute of Materials (iMATUS), Universidade de Santiago de Compostela, Avenida das Ciencias s/n, 15782 Santiago de Compostela, Spain; (M.F.); (J.C.-V.); (Y.A.-I.)
| | - Ana M. García-Deibe
- Coordination and Supramolecular Chemistry Group (SupraMetal), Department of Inorganic Chemistry, Faculty of Chemistry, Institute of Materials (iMATUS), Universidade de Santiago de Compostela, Avenida das Ciencias s/n, 15782 Santiago de Compostela, Spain; (M.F.); (J.C.-V.); (Y.A.-I.)
| | - Julio Corredoira-Vázquez
- Coordination and Supramolecular Chemistry Group (SupraMetal), Department of Inorganic Chemistry, Faculty of Chemistry, Institute of Materials (iMATUS), Universidade de Santiago de Compostela, Avenida das Ciencias s/n, 15782 Santiago de Compostela, Spain; (M.F.); (J.C.-V.); (Y.A.-I.)
| | - Yeneva Alves-Iglesias
- Coordination and Supramolecular Chemistry Group (SupraMetal), Department of Inorganic Chemistry, Faculty of Chemistry, Institute of Materials (iMATUS), Universidade de Santiago de Compostela, Avenida das Ciencias s/n, 15782 Santiago de Compostela, Spain; (M.F.); (J.C.-V.); (Y.A.-I.)
- Trace Element, Speciation and Spectroscopy Group (GETEE), Department of Analytical Chemistry, Nutrition and Bromatology, Faculty of Chemistry, Institute of Materials (iMATUS), Universidade de Santiago de Compostela, Avenida das Ciencias s/n, 15782 Santiago de Compostela, Spain; (P.B.-B.); (M.A.-S.)
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Wang Z, Shen X, Tang C, Li X, Hu J, Zhu J, Yu WW, Song H, Bai X. Efficient and Stable CF 3PEAI-Passivated CsPbI 3 QDs toward Red LEDs. ACS APPLIED MATERIALS & INTERFACES 2022; 14:8235-8242. [PMID: 35119813 DOI: 10.1021/acsami.1c19685] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Oleylamine and oleic acid are common organic capping ligands used in the hot injection preparation of perovskite quantum dots (QDs). Their labile nature is responsible for the poor colloidal stability and conductivity that affect the performance of perovskite QD light-emitting diodes (LEDs). We introduced 4-trifluoro phenethylammonium iodide (CF3PEAI) directly in the synthesis and found that CF3PEAI efficiently modified the I- vacancy defects on the QD surface and partially substituted the surface capping ligand oleylamine. The strong electron pulling ability of F in CF3PEAI results in a more positive -NH3+ terminal compared to that of PEAI, which promotes tight bonding of CF3PEAI on the surface of CsPbI3 QDs. As a result, we achieved bright QDs with a photoluminescence quantum yield of 92% and efficient red LEDs. The maximal luminance was improved to 4550 cd m-2 for 685 nm red light, which was nearly 4.6-fold of the LEDs with plain CsPbI3 QDs. Additionally, the peak external quantum efficiency reached 12.5%.
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Affiliation(s)
- Zhenyu Wang
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Xinyu Shen
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Chengyuan Tang
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Xin Li
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Junhua Hu
- Key Laboratory of Materials Physics of Ministry of Education, Department of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China
| | - Jinyang Zhu
- Key Laboratory of Materials Physics of Ministry of Education, Department of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China
| | - William W Yu
- Department of Chemistry and Physics, Louisiana State University, Shreveport, Louisiana 71115, United States
| | - Hongwei Song
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Xue Bai
- State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
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Díez-Buitrago B, Saa L, Briz N, Pavlov V. Development of portable CdS QDs screen-printed carbon electrode platform for electrochemiluminescence measurements and bioanalytical applications. Talanta 2021; 225:122029. [PMID: 33592758 DOI: 10.1016/j.talanta.2020.122029] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/11/2020] [Accepted: 12/14/2020] [Indexed: 12/31/2022]
Abstract
In this work, a portable and disposable screen-printed electrode-based platform for CdS QDs electrochemiluminescence (ECL) detection is presented. CdS QDs were synthesized in aqueous media and placed on top of carbon electrodes by drop casting. The CdS QDs spherical assemblies consisted of nanoparticles about 4 nm diameters and served as ECL sensitizers to enzymatic assays. The nanoparticles were characterized by optical techniques, TEM and XPS. Besides, the electrode modification process was optimized and further studied by SEM and confocal microscopy. The ECL emission from CdS QDs was triggered with H2O2 as cofactor and enzymatic assays were employed to modulate the CdS QDs ECL signal by blocking the surface or generating H2O2 in situ. Thiol-bearing compounds such as thiocholine generated through the hydrolysis of acetylthiocholine by acetylcholinesterase (AChE) interacted with the surface of CdS QDs thus blocking the ECL. The biosensor showed a linear range up to 5 mU mL-1 and a detection limit of 0.73 mU mL-1 for AChE. Moreover, the inhibition mechanism of the enzyme was studied by using 1,5-bis-(4-allyldimethylammonium-phenyl)pentan-3-one dibromide with a detection limit of 79.22 nM. Furthermore, the natural production of H2O2 from the oxidation of methanol by the action of alcohol oxidase was utilized to carry out the ECL process. This enzymatic assay presented a linear range up to 0.5 mg L-1 and a detection limit of 61.46 μg L-1 for methanol. The reported methodology shows potential applications for the development of sensitive and easy to hand biosensors and was applied to the determination of AChE and methanol in real samples.
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Affiliation(s)
- Beatriz Díez-Buitrago
- Center for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182, 20014, Donostia San Sebastián, Spain; Tecnalia, Basque Research and Technology Alliance (BRTA), Paseo Mikeletegi 2, 20009, Donostia-San Sebastián, Spain
| | - Laura Saa
- Center for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182, 20014, Donostia San Sebastián, Spain
| | - Nerea Briz
- Tecnalia, Basque Research and Technology Alliance (BRTA), Paseo Mikeletegi 2, 20009, Donostia-San Sebastián, Spain
| | - Valeri Pavlov
- Center for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182, 20014, Donostia San Sebastián, Spain.
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7
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Cui L, Yu S, Gao W, Zhang X, Deng S, Zhang CY. Tetraphenylenthene-Based Conjugated Microporous Polymer for Aggregation-Induced Electrochemiluminescence. ACS APPLIED MATERIALS & INTERFACES 2020; 12:7966-7973. [PMID: 31984727 DOI: 10.1021/acsami.9b21943] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We demonstrate the aggregation-induced electrochemiluminescence (AIECL) generated by 1,1,2,2-tetrakis(4-bromophenyl)ethane (TBPE)-based conjugated microporous polymers (TBPE-CMPs) and its biosensing application. We synthesized three TBPE-CMPs (i.e., TBPE-CMP-1, -2, -3) using three different molecules including tris(4-ethynylphenyl)amine (TEPA), 4,4'-diethynylbiphenyl (DEP), and 2,4,6-tris(4-ethynylphenyl)-1,3,5-triazine (TEPT). The TBPE-CMPs can act as electrochemiluminescence (ECL) emitters to generate AIECL. Among them, TBPE-CMP-1 exhibits the highest ECL efficiency (1.72%) due to the improved electron-hole recombination efficiency and efficient suppression of nonradiative transition. Moreover, the ECL properties of TBPE-CMPs can be tuned by the introduction of different conjugated molecules that can decrease the energy gap to facilitate the injection of an electron into the conjugated polymer backbone. Importantly, TBPE-CMP-1 can be used to construct an ECL sensor for the detection of dopamine, whose electro-oxidation products (e.g., leucodopaminechrome (LDC), dopaminechrome (DC), 5,6-dihydroxyindole (DHI), and 5,6-indolequinone (IDQ)) may function as energy acceptors to quench the ECL emission of TBPE-CMP-1. This ECL sensor exhibits high sensitivity and good anti-interference capability against ascorbic acid and uric acid.
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Affiliation(s)
- Lin Cui
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , China
| | - Shilong Yu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , China
| | - Wenqiang Gao
- School of Chemistry and Chemical Engineering , Shandong University , Jinan , Shandong 250100 , China
| | - Xiaomei Zhang
- School of Chemistry and Chemical Engineering , Shandong University , Jinan , Shandong 250100 , China
| | - Shengyuan Deng
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Chun-Yang Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals , Shandong Normal University , Jinan 250014 , China
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Rath T, Scheunemann D, Canteri R, Amenitsch H, Handl J, Wewerka K, Kothleitner G, Leimgruber S, Knall AC, Haque SA. Ligand-free preparation of polymer/CuInS 2 nanocrystal films and the influence of 1,3-benzenedithiol on their photovoltaic performance and charge recombination properties. JOURNAL OF MATERIALS CHEMISTRY. C 2019; 7:943-952. [PMID: 30774956 PMCID: PMC6350655 DOI: 10.1039/c8tc05103h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 12/17/2018] [Indexed: 06/09/2023]
Abstract
Bulk heterojunction solar cells based on conjugated polymer donors and fullerene-derivative acceptors have received much attention in the last decade. Alternative acceptors like organic non-fullerene acceptors or inorganic nanocrystals have been investigated to a lesser extent; however, they also show great potential. In this study, one focus is set on the investigation of the in situ growth of copper indium sulfide nanocrystals in a conjugated polymer matrix. This preparation method allows the fabrication of a hybrid active layer without long-chain ligands, which could hinder charge separation and transport. In contrast, surfactants for the passivation of the nanocrystal surface are missing. To tackle this problem, we modified the absorber layer with 1,3-benzenedithiol and investigated the influence on charge transfer and solar cell performance. Using ToF-SIMS measurements, we could show that 1,3-benzenedithiol is successfully incorporated and homogeneously distributed in the absorber layer, which significantly increases the power conversion efficiency of the corresponding solar cells. This can be correlated to an improved charge transfer between the nanocrystals and the conjugated polymer as revealed by transient absorption spectroscopy as well as prolonged carrier lifetimes as disclosed by transient photovoltage measurements.
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Affiliation(s)
- Thomas Rath
- Institute for Chemistry and Technology of Materials (ICTM) , NAWI Graz , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria .
| | - Dorothea Scheunemann
- Energy and Semiconductor Research Laboratory , Department of Physics , Carl von Ossietzky University of Oldenburg , Carl-von-Ossietzky-Strasse 9-11 , 26129 Oldenburg , Germany
| | - Roberto Canteri
- Fondazione Bruno Kessler - Center for Materials and Microsystems , Via Sommarive 18 , I-38123 Povo (Trento) , Italy
| | - Heinz Amenitsch
- Institute for Inorganic Chemistry , NAWI Graz , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria
| | - Jasmin Handl
- Institute for Chemistry and Technology of Materials (ICTM) , NAWI Graz , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria .
| | - Karin Wewerka
- Institute for Electron Microscopy and Nanoanalysis and Center for Electron Microscopy , Graz University of Technology , NAWI Graz , Steyrergasse 17 , 8010 Graz , Austria
| | - Gerald Kothleitner
- Institute for Electron Microscopy and Nanoanalysis and Center for Electron Microscopy , Graz University of Technology , NAWI Graz , Steyrergasse 17 , 8010 Graz , Austria
| | - Simon Leimgruber
- Institute for Chemistry and Technology of Materials (ICTM) , NAWI Graz , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria .
| | - Astrid-Caroline Knall
- Institute for Chemistry and Technology of Materials (ICTM) , NAWI Graz , Graz University of Technology , Stremayrgasse 9 , 8010 Graz , Austria .
| | - Saif A Haque
- Department of Chemistry and Centre for Plastic Electronics , Imperial College London , Imperial College Road , London , SW7 2AZ , UK
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Huo XL, Yang H, Li MX, Zhao W, Xu JJ, Wang Y, Luo XL, Chen HY. Multi-segmented CdS-Au nanorods for electrochemiluminescence bioanalysis. NANOSCALE 2018; 10:19224-19230. [PMID: 30303203 DOI: 10.1039/c8nr06956e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, we have developed a programmable electrochemiluminescence (ECL) system based on multi-segmented CdS-Au nanorod arrays with a sequential and highly tunable structure. The nanorod arrays were synthesized by an electrodeposition method using anodic aluminum oxide (AAO) as the template in which the Au and CdS segments were alternately electrodeposited. Compared to pure CdS nanorod arrays, multi-segmented CdS-Au nanorod arrays have showed a better ECL performance, which can be attributed to two factors: the favorable electron transfer and the surface plasma resonance (SPR) effect of the Au segment. On the one hand, we demonstrated that the Au segment can increase the charge transfer rate of CdS, which is beneficial for the ECL process because the generation of the radical state needs to accept electrons and then generate the radical state. On the other hand, the SPR of Au plasmon-induced local electromagnetic field enhancement can increase the radiative decay rate of CdS which makes the ECL process more efficient and lead to a higher ECL intensity. And also, an ECL sensor with multi-segmented CdS-Au nanorod arrays was constructed to detect prostate protein antigen (PSA). This study provides some basis for designing high-performance ECL emission materials and the construction of biosensors.
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Affiliation(s)
- Xiao-Lei Huo
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
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Ai Y, Li X, Zhang L, Zhong W, Wang J. Highly sensitive electrochemiluminescent immunoassay for neuron-specific enolase amplified by single-walled carbon nanohorns and enzymatic biocatalytic precipitation. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.04.049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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11
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Mao G, Liu C, Du M, Zhang Y, Ji X, He Z. One-pot synthesis of the stable CdZnTeS quantum dots for the rapid and sensitive detection of copper-activated enzyme. Talanta 2018; 185:123-131. [PMID: 29759178 DOI: 10.1016/j.talanta.2018.03.054] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 03/15/2018] [Accepted: 03/16/2018] [Indexed: 10/17/2022]
Abstract
Galactose oxidase is a copper-activated enzyme and have a vital role in metabolism of galactose. Much of the work is focused on determining the amount of galactose in the blood rather than measuring the amount of galactose oxidase to urge the galactosemia patients to restrict milk intake. Here, a simple and effective method was developed for Cu2+ and copper-activated enzyme detection based on homogenous alloyed CdZnTeS quantum dots (QDs). Meso- 2,3-dimercaptosuccinic acid (DMSA) was used as the reducing agent for preparing QDs and the highest quantum yield of CdZnTeS QDs was 69.4%. In addition, the as-prepared CdZnTeS QDs show superior fluorescence properties, such as good photo-/chemical stability. The DMSA was the surface ligand of the QDs, containing abundant -SH and -COOH, thus the surface ligands have a high affinity with Cu2+. Therefore, this developed probe can be applied for Cu2+ and galactose oxidase detection and shows a good sensitivity in the buffer. Then, this probe was successfully used for Cu2+ and galactose oxidase detection in real samples with the satisfactory results. The proposed fluorescence quenching strategy gives a new and simple insight for enzyme assay without the enzyme-catalyzed reaction.
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Affiliation(s)
- Guobin Mao
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Chen Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Mingyuan Du
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Yuwei Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Xinghu Ji
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Zhike He
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China.
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Sahoo D, Mandal A, Mitra T, Chakraborty K, Bardhan M, Dasgupta AK. Nanosensing of Pesticides by Zinc Oxide Quantum Dot: An Optical and Electrochemical Approach for the Detection of Pesticides in Water. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:414-423. [PMID: 29239610 DOI: 10.1021/acs.jafc.7b04188] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Present study reveals the low concentrations (∼4 ppm) of pesticide sensing vis-à-vis degradation of pesticides with the help of nontoxic zinc oxide quantum dots (QD). In our study, we have taken four different pesticides viz., aldrin, tetradifon, glyphosate, and atrazine, which are widely used in agriculture and have structural dissimilarities/diversity. By using optical sensing techniques such as steady state and time-resolved fluorescence, we have analyzed the detailed exciton dynamics of QD in the presence of different pesticides. It has been found that the pesticide containing good leaving groups (-Cl) can interact with QD promptly and has high binding affinity (∼107 M-1). The different binding signatures of QD with different pesticides enable us to differentiate between the pesticides. Time resolved fluorescence spectroscopy provides significant variance (∼150-300 ns) for different pesticides. Furthermore, a large variation (105 Ω to 7 × 104 Ω) in the resistance of QD in the presence of different pesticides was revealed by electrochemical sensing technique. Moreover, during the interaction with pesticides, QD can also act as a photocatalyst to degrade pesticides. Present investigation explored the fact that the rate of degradation is positively affected by the binding affinity, i.e., the greater the binding, the greater is the degradation. What is more, both optical and electrochemical measurements of QD, in tandem, as described in our study could be utilized as the pattern recognition sensor for detection of several pesticides.
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Affiliation(s)
- Dibakar Sahoo
- Department of Biochemistry, University of Calcutta , Kolkata 700019, India
| | - Abhishek Mandal
- ICAR-Indian Agricultural Research Institute , New Delhi 110012, India
| | - Tapas Mitra
- Department of Biochemistry, University of Calcutta , Kolkata 700019, India
| | - Kaushik Chakraborty
- Center for Research in NanoScience and NanoTechnology, University of Calcutta , Kolkata 700098, India
| | - Munmun Bardhan
- Chemical Sciences Division, Saha Institute of Nuclear Physics , Kolkata 700064, India
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13
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Zhang R, Shao M, Han X, Wang C, Li Y, Hu B, Pang D, Xie Z. ATP synthesis in the energy metabolism pathway: a new perspective for manipulating CdSe quantum dots biosynthesized in Saccharomyces cerevisiae. Int J Nanomedicine 2017; 12:3865-3879. [PMID: 28579774 PMCID: PMC5446969 DOI: 10.2147/ijn.s132719] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Due to a growing trend in their biomedical application, biosynthesized nanomaterials are of great interest to researchers nowadays with their biocompatible, low-energy consumption, economic, and tunable characteristics. It is important to understand the mechanism of biosynthesis in order to achieve more efficient applications. Since there are only rare studies on the influences of cellular energy levels on biosynthesis, the influence of energy is often overlooked. Through determination of the intracellular ATP concentrations during the biosynthesis process, significant changes were observed. In addition, ATP synthesis deficiency caused great decreases in quantum dots (QDs) biosynthesis in the Δatp1, Δatp2, Δatp14, and Δatp17 strains. With inductively coupled plasma-atomic emission spectrometry and atomic absorption spectroscopy analyses, it was found that ATP affected the accumulation of the seleno-precursor and helped with the uptake of Cd and the formation of QDs. We successfully enhanced the fluorescence intensity 1.5 or 2 times through genetic modification to increase ATP or SeAM (the seleno analog of S-adenosylmethionine, the product that would accumulate when ATP is accrued). This work explains the mechanism for the correlation of the cellular energy level and QDs biosynthesis in living cells, demonstrates control of the biosynthesis using this mechanism, and thus provides a new manipulation strategy for the biosynthesis of other nanomaterials to widen their applications.
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Affiliation(s)
- Rong Zhang
- Hubei Key Laboratory of Cell Homeostasis
- College of Life Sciences, Wuhan University
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
| | - Ming Shao
- Hubei Key Laboratory of Cell Homeostasis
- College of Life Sciences, Wuhan University
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
| | - Xu Han
- Hubei Key Laboratory of Cell Homeostasis
- College of Life Sciences, Wuhan University
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
| | - Chuan Wang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Science, Wuhan University, Wuhan, People’s Republic of China
| | - Yong Li
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Science, Wuhan University, Wuhan, People’s Republic of China
| | - Bin Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Science, Wuhan University, Wuhan, People’s Republic of China
| | - Daiwen Pang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Science, Wuhan University, Wuhan, People’s Republic of China
| | - Zhixiong Xie
- Hubei Key Laboratory of Cell Homeostasis
- College of Life Sciences, Wuhan University
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
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14
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Cui M, Yu R, Wang X, Zhou H, Liu J, Zhang S. Novel graphene/Au-CdS:Eu composite-based electrochemiluminescence immunosensor for cancer biomarker detection by coupling resonance energy transfer and enzyme catalytic reaction. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.06.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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15
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Bibi A, Ju H. Quantum dots assisted laser desorption/ionization mass spectrometric detection of carbohydrates: qualitative and quantitative analysis. JOURNAL OF MASS SPECTROMETRY : JMS 2016; 51:291-297. [PMID: 27041659 DOI: 10.1002/jms.3753] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 01/25/2016] [Accepted: 01/29/2016] [Indexed: 06/05/2023]
Abstract
A quantum dots (QDs) assisted laser desorption/ionization mass spectrometric (QDA-LDI-MS) strategy was proposed for qualitative and quantitative analysis of a series of carbohydrates. The adsorption of carbohydrates on the modified surface of different QDs as the matrices depended mainly on the formation of hydrogen bonding, which led to higher MS intensity than those with conventional organic matrix. The effects of QDs concentration and sample preparation method were explored for improving the selective ionization process and the detection sensitivity. The proposed approach offered a new dimension to the application of QDs as matrices for MALDI-MS research of carbohydrates. It could be used for quantitative measurement of glucose concentration in human serum with good performance. The QDs served as a matrix showed the advantages of low background, higher sensitivity, convenient sample preparation and excellent stability under vacuum. The QDs assisted LDI-MS approach has promising application to the analysis of carbohydrates in complex biological samples.
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Affiliation(s)
- Aisha Bibi
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
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16
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Liu X, Jiang H, Fang Y, Zhao W, Wang N, Zang G. Quantum Dots Based Potential-Resolution Dual-Targets Electrochemiluminescent Immunosensor for Subtype of Tumor Marker and Its Serological Evaluation. Anal Chem 2015; 87:9163-9. [PMID: 26291342 DOI: 10.1021/acs.analchem.5b02660] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xuan Liu
- Department
of Clinical Laboratory, Second Affiliated Hospital of Southeast University, Nanjing 210003, People’s Republic of China
| | - Hui Jiang
- State
Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, People’s Republic of China
| | - Yuan Fang
- Department
of Clinical Laboratory, Second Affiliated Hospital of Southeast University, Nanjing 210003, People’s Republic of China
| | - Wei Zhao
- Department
of Clinical Laboratory, Second Affiliated Hospital of Southeast University, Nanjing 210003, People’s Republic of China
| | - Nianyue Wang
- Department
of Clinical Laboratory, Second Affiliated Hospital of Southeast University, Nanjing 210003, People’s Republic of China
| | - Guizhen Zang
- Department
of Clinical Laboratory, Second Affiliated Hospital of Southeast University, Nanjing 210003, People’s Republic of China
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17
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Kirschbaum SEK, Baeumner AJ. A review of electrochemiluminescence (ECL) in and for microfluidic analytical devices. Anal Bioanal Chem 2015; 407:3911-26. [DOI: 10.1007/s00216-015-8557-x] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 01/12/2015] [Accepted: 02/10/2015] [Indexed: 12/31/2022]
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18
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Biosensing strategy based on photocurrent quenching of quantum dots via energy resonance absorption. Sci China Chem 2015. [DOI: 10.1007/s11426-014-5315-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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19
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Ultrasensitive photoelectrochemical immunoassay through tag induced exciton trapping. Talanta 2015; 134:496-500. [DOI: 10.1016/j.talanta.2014.11.041] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 11/17/2014] [Accepted: 11/19/2014] [Indexed: 01/25/2023]
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20
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Wu P, Hou X, Xu JJ, Chen HY. Electrochemically Generated versus Photoexcited Luminescence from Semiconductor Nanomaterials: Bridging the Valley between Two Worlds. Chem Rev 2014; 114:11027-59. [DOI: 10.1021/cr400710z] [Citation(s) in RCA: 216] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Peng Wu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
- Analytical & Testing Center, Sichuan University, Chengdu 610064, China
| | - Xiandeng Hou
- Analytical & Testing Center, Sichuan University, Chengdu 610064, China
| | - Jing-Juan Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P.R. China
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21
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Lu Q, Hu H, Wu Y, Chen S, Yuan D, Yuan R. An electrogenerated chemiluminescence sensor based on gold nanoparticles@C60 hybrid for the determination of phenolic compounds. Biosens Bioelectron 2014; 60:325-31. [DOI: 10.1016/j.bios.2014.04.044] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 04/22/2014] [Indexed: 10/25/2022]
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22
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Zhang YY, Zhou H, Wu P, Zhang HR, Xu JJ, Chen HY. In situ activation of CdS electrochemiluminescence film and its application in H₂S detection. Anal Chem 2014; 86:8657-64. [PMID: 25096242 DOI: 10.1021/ac501532y] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Nanocrystals (NCs) usually suffer from weak electrogenerated chemiluminescence (ECL) emissions compared with conventional luminescent reagents like Ru(bpy)3(2+). In this work, we proposed a simple in situ activation approach by dipping CdS NCs film on glass carbon electrode (CdS NCs/GCE) in an activation solution containing H2O2 and citric acid, resulting in a ~58-fold enhancement of ECL intensity in the presence of coreactant H2O2. During activation, CdS NCs were oxidized by H2O2 to smaller ones which resulted in more surface S vacancies; meanwhile, citric acid played an important role in stabilizing NCs. The ECL enhancing mechanism was investigated in detail, and the coordination of H2O2 to surface excess Cd(2+) ions (S vacancies) on the CdS NCs surface formed in activation was the main factor which could stabilize the electrogenerated radicals, resulting in an enhanced ECL. ECL from the activated CdS NCs/GCE could be quenched in Na2S solution due to the bonding of S(II) to excess Cd(2+) ions on the surface of CdS NCs. On the basis of this, we then used the activated CdS NCs/GCE as an ECL probe for the detection of Na2S which showed good performance including a wide linear range of 5 nM to 20 μM and good anti-interference ability. Moreover, this ECL probe was successfully applied for hydrogen sulfide (H2S) detection in a biological system.
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Affiliation(s)
- Yan-Yan Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
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23
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Liu X, Wang N, Zhao W, Jiang H. Electrochemiluminescent pH sensor measured by the emission potential of TiO
2
nanocrystals and its biosensing application. LUMINESCENCE 2014; 30:98-101. [PMID: 24802560 DOI: 10.1002/bio.2697] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 03/25/2014] [Accepted: 04/02/2014] [Indexed: 01/06/2023]
Affiliation(s)
- Xuan Liu
- Department of Clinical LaboratorySecond Affiliated Hospital of Southeast University Nanjing People's Republic of China
| | - Nianyue Wang
- Department of Clinical LaboratorySecond Affiliated Hospital of Southeast University Nanjing People's Republic of China
| | - Wei Zhao
- Department of Clinical LaboratorySecond Affiliated Hospital of Southeast University Nanjing People's Republic of China
| | - Hui Jiang
- State Key Laboratory of BioelectronicsSoutheast University Nanjing People's Republic of China
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24
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Deng S, Zhang T, Zhang Y, Shan D, Zhang X. Chronopotentiometric synthesis of quantum dots with efficient surface-derived near-infrared electrochemiluminescence for ultrasensitive microchip-based ion-selective sensing. RSC Adv 2014. [DOI: 10.1039/c4ra03211j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Metalantidote-stabilized QDs were synthesized via hydrodynamic chronopotentiometry with efficient NIR-ECL derived from the unique surface states for ultrasensitive microchip-based ion-selective sensing.
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Affiliation(s)
- Shengyuan Deng
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094, P.R. China
- State Key of Analytical Chemistry for Life Science
- School of Chemistry and Chemical Engineering
| | - Tingting Zhang
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094, P.R. China
| | - Yuan Zhang
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094, P.R. China
| | - Dan Shan
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094, P.R. China
| | - Xueji Zhang
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094, P.R. China
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25
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Yao X, Yan P, Tang Q, Deng A, Li J. Quantum dots based electrochemiluminescent immunosensor by coupling enzymatic amplification for ultrasensitive detection of clenbuterol. Anal Chim Acta 2013; 798:82-8. [DOI: 10.1016/j.aca.2013.08.029] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 07/15/2013] [Accepted: 08/15/2013] [Indexed: 11/27/2022]
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26
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Wang P, Lei J, Su M, Liu Y, Hao Q, Ju H. Highly Efficient Visual Detection of Trace Copper(II) and Protein by the Quantum Photoelectric Effect. Anal Chem 2013; 85:8735-40. [DOI: 10.1021/ac401749u] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Peng Wang
- State Key Laboratory of Analytical
Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing 210093, China
| | - Jianping Lei
- State Key Laboratory of Analytical
Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing 210093, China
| | - Mengqi Su
- State Key Laboratory of Analytical
Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing 210093, China
| | - Yueting Liu
- State Key Laboratory of Analytical
Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing 210093, China
| | - Qing Hao
- State Key Laboratory of Analytical
Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing 210093, China
| | - Huangxian Ju
- State Key Laboratory of Analytical
Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing 210093, China
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27
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Deng S, Ju H. Electrogenerated chemiluminescence of nanomaterials for bioanalysis. Analyst 2013; 138:43-61. [DOI: 10.1039/c2an36122a] [Citation(s) in RCA: 172] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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28
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Deng S, Lei J, Liu Y, Huang Y, Ju H. A ferrocenyl-terminated dendrimer as an efficient quencher via electron and energy transfer for cathodic electrochemiluminescent bioanalysis. Chem Commun (Camb) 2013; 49:2106-8. [DOI: 10.1039/c3cc39208b] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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29
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Jia J, Zhang P, Gao D, Sheng Z, Hu D, Gong P, Wu C, Chen J, Cai L. One-step synthesis of peptide-programmed QDs as ready-to-use nanoprobes. Chem Commun (Camb) 2013; 49:4492-4. [DOI: 10.1039/c3cc40524a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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30
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31
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Ai X, Niu L, Li Y, Yang F, Su X. A novel β-Cyclodextrin-QDs optical biosensor for the determination of amantadine and its application in cell imaging. Talanta 2012; 99:409-14. [DOI: 10.1016/j.talanta.2012.05.072] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Revised: 05/31/2012] [Accepted: 05/31/2012] [Indexed: 12/20/2022]
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32
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Wang P, Ma X, Su M, Hao Q, Lei J, Ju H. Cathode photoelectrochemical sensing of copper(ii) based on analyte-induced formation of exciton trapping. Chem Commun (Camb) 2012; 48:10216-8. [DOI: 10.1039/c2cc35643k] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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33
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Li J, Guo S, Wang E. Recent advances in new luminescent nanomaterials for electrochemiluminescence sensors. RSC Adv 2012. [DOI: 10.1039/c2ra01070d] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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34
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Deng S, Lei J, Huang Y, Yao X, Ding L, Ju H. Electrocatalytic reduction of coreactant by highly loaded dendrimer-encapsulated palladium nanoparticles for sensitive electrochemiluminescent immunoassay. Chem Commun (Camb) 2012; 48:9159-61. [DOI: 10.1039/c2cc34221a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Cheng L, Deng S, Lei J, Ju H. Disposable electrochemiluminescent biosensor using bidentate-chelated CdTe quantum dots as emitters for sensitive detection of glucose. Analyst 2011; 137:140-4. [PMID: 22034620 DOI: 10.1039/c1an15639j] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel disposable solid-state electrochemiluminescent (ECL) biosensor was fabricated by immobilizing glucose oxidase and surface-unpassivated CdTe quantum dots (QDs) on a screen-printed carbon electrode (SPCE). The surface morphology of the biosensor was characterized with scanning electron microscopy and atomic force microscopy. With dissolved O(2) as an endogenous coreactant, QDs/SPCE showed strong ECL emission in pH 9.0 HCl-Tris buffer solution with low ECL peak potential at -0.89 V. The ECL intensity was twice that with hydrogen peroxide as coreactant at the same concentration. This phenomenon meant the ECL decreased upon consumption of dissolved O(2) and thus could be applied to the construction of oxidase-based ECL biosensors. With glucose oxidase as a model enzyme, the biosensor showed rapid response to glucose with a linear range of 0.8 to 100 μM and a detection limit of 0.3 μM. Further detection of glucose contained in human serum samples showed acceptable sensitivity and selectivity. This work provided a promising application of QDs in ECL-based disposable biosensors.
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Affiliation(s)
- Lingxiao Cheng
- State Key Laboratory of Analytical Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing, 210093, PR China
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36
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Liu X, Hou Z, Lei J, Ju H, Cai J, Shen J. High Electron Transfer Efficiency of Titania Dioxide Nanotube for Low Potential Electrochemiluminescent Biosensing. ELECTROANAL 2011. [DOI: 10.1002/elan.201100379] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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37
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Lei J, Ju H. Fundamentals and bioanalytical applications of functional quantum dots as electrogenerated emitters of chemiluminescence. Trends Analyt Chem 2011. [DOI: 10.1016/j.trac.2011.04.010] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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38
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Liang G, Shen L, Zou G, Zhang X. Efficient near-infrared electrochemiluminescence from CdTe nanocrystals with low triggering potential and ultrasensitive sensing ability. Chemistry 2011; 17:10213-5. [PMID: 21837690 DOI: 10.1002/chem.201101154] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Indexed: 11/08/2022]
Affiliation(s)
- Guodong Liang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China
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39
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Peng J, Feng LN, Zhang K, Li JJ, Jiang LP, Zhu JJ. Multifunctional Manganese Carbonate Microspheres with Superparamagnetic and Fluorescent Properties: Synthesis and Biological Application. Chemistry 2011; 17:10916-23. [DOI: 10.1002/chem.201100899] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 06/27/2011] [Indexed: 12/13/2022]
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40
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Amplified electrochemiluminescence of quantum dots by electrochemically reduced graphene oxide for nanobiosensing of acetylcholine. Biosens Bioelectron 2011; 26:4552-8. [DOI: 10.1016/j.bios.2011.05.023] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 05/08/2011] [Accepted: 05/12/2011] [Indexed: 11/17/2022]
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41
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Shan Y, Xu JJ, Chen HY. Enhanced electrochemiluminescence quenching of CdS:Mn nanocrystals by CdTe QDs-doped silica nanoparticles for ultrasensitive detection of thrombin. NANOSCALE 2011; 3:2916-2923. [PMID: 21633752 DOI: 10.1039/c1nr10175g] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This work reports an aptasensor for ultrasensitive detection of thrombin based on remarkably efficient energy-transfer induced electrochemiluminescence (ECL) quenching from CdS:Mn nanocrystals (NCs) film to CdTe QDs-doped silica nanoparticles (CdTe/SiO(2) NPs). CdTe/SiO(2) NPs were synthesized via the Stöber method and showed black bodies' strong absorption in a wide spectral range without excitonic emission, which made them excellent ECL quenchers. Within the effective distance of energy scavenging, the ECL quenching efficiency was dependent on the number of CdTe QDs doped into the silica NPs. Using ca. 200 CdTe QDs doped silica NPs on average of 40 nm in diameter as ECL quenching labels, attomolar detection of thrombin was successfully realized. The protein detection involves a competition binding event, based on thrombin replacing CdTe/SiO(2) NPs labeled probing DNA which is hybridized with capturing aptamer immobilized on a CdS:Mn NCs film modified glassy carbon electrode surface by specific aptamer-protein affinity interactions. It results in the displacement of ECL quenching labels from CdS:Mn NCs film and concomitant ECL signal recovery. Owing to the high-content CdTe QDs in silica NP, the increment of ECL intensity (ΔI(ECL)) and the concentration of thrombin showed a double logarithmic linear correlation in the range of 5.0 aM∼5.0 fM with a detection limit of 1aM. And, the aptasensor hardly responded to antibody, bovine serum albumin (BSA), haemoglobin (Hb) and lysozyme, showing good detection selectivity for thrombin. This long-distance energy scavenging could have a promising application perspective in the detection of biological recognition events on a molecular level.
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Affiliation(s)
- Yun Shan
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
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Jiang H, Wang X. Blocking Effect on Adsorption-Controlled Electrochemiluminescence of CdSe Nanoparticles for Detection of the Neurotransmitter Serotonin. Chem Asian J 2011; 6:1533-8. [DOI: 10.1002/asia.201000851] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2010] [Indexed: 11/10/2022]
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Zhang L, Fang YM, Wang RY, You LX, Fu NY, Chen GN, Sun JJ. Electrogenerated chemiluminescence of bis[4-(dimethylamino)phenyl]squaraine. Chem Commun (Camb) 2011; 47:3855-7. [DOI: 10.1039/c0cc05818a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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