1
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Xu W, Hao X, Li T, Dai S, Fang Z. Dual-Mode Fluorescence and Visual Fluorescent Test Paper Detection of Copper Ions and EDTA. ACS OMEGA 2021; 6:29157-29165. [PMID: 34746604 PMCID: PMC8567358 DOI: 10.1021/acsomega.1c04406] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
In this study, blue-emission carbon dots were prepared from the legumes of the vegetable Pisum sativum Linn. by one-step carbonization. The fluorescence of a carbon dot (CDs) solution can be quenched by copper ions and recovered by ethylenediaminetetraacetic acid (EDTA). In addition, two kinds of visual fluorescent filter papers were prepared. Finally, a dual-mode fluorescence and visual fluorescent test paper was employed for the detection of copper ions and EDTA. The simple synthesis method and the high safety enable this material to have more application possibilities.
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Affiliation(s)
- Wanqing Xu
- School
of Chemical Engineering, University of Science
and Technology Liaoning, Anshan 114051, PR China
| | - Xiaoliang Hao
- School
of Chemical Engineering, University of Science
and Technology Liaoning, Anshan 114051, PR China
| | - Tongtong Li
- School
of Chemical Engineering, University of Science
and Technology Liaoning, Anshan 114051, PR China
| | - Shujuan Dai
- School
of Mining Engineering, University of Science
and Technology Liaoning, Anshan 114051, PR China
| | - Zhigang Fang
- School
of Chemical Engineering, University of Science
and Technology Liaoning, Anshan 114051, PR China
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2
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Ghazal B, Makhseed S. Impact of phthalocyanine structure as photosensitizer for ZnO nanophotocatalyst under natural solar irradiation. J PORPHYR PHTHALOCYA 2021. [DOI: 10.1142/s1088424621500140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Novel composites of zinc oxide (ZnO) and copper phthalocyanines (CuTriPc and CuPc) were synthesized as efficient natural solar light photocatalysts for the photodegradation of organic wastewater pollutants. Spectroscopic and analytical measurements confirmed that both bulky triazolo copper phthalocyanine (CuTriPc) and unsubstituted planer (CuPc) were successfully coupled with ZnO nanoparticles. The synthesized nanocomposites were investigated as natural solar radiation photocatalysts toward the photodegradation of methylene blue (MB) analogue dye. The prepared CuTriPc/ZnO nanocomposite was proven to be an efficient solar light photocatalyst compared to pure ZnO and the unsubstituted CuPc/ZnO.
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Affiliation(s)
- Basma Ghazal
- Department of Chemistry, Kuwait University, P. O. Box 5969, Safat, 13060, Kuwait
| | - Saad Makhseed
- Department of Chemistry, Kuwait University, P. O. Box 5969, Safat, 13060, Kuwait
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3
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Pure, Size Tunable ZnO Nanocrystals Assembled into Large Area PMMA Layer as Efficient Catalyst. Catalysts 2019. [DOI: 10.3390/catal9020162] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Here, we demonstrate for the first time a strategy to self-assemble ZnO nanoparticles (NP) on a large area by a facile one-step process. First, rough and random ZnO nanocrystals (NC), were produced by free-stabilizing aqueous synthesis. Therefore, a post thermal treatment at various temperatures ranging from 80 to 800 °C was necessary to obtain size-tunable and photoluminescent crystalline NP. The fabricated NP had both efficient UV photoluminescence and photocatalytic activity by photo-degradation of Methylene Blue (MB) dye. The annealed NP showed an absorption blue shift in the UV region with decreasing size. This shift was attributed to high quantum confinement effect since ZnO NP diameter reached values lower than the Bohr radius of ZnO (~2.7 nm). The photocatalytic activity displayed dependency on the particle’s size, number, and crystallinity. Subsequently, the NP were self-assembled inside poly(methyl methacrylate) (PMMA) nanoholes. Subsequently, large area substrate of homogenous properties ZnO NP was obtained. Moreover, the synthesis facility, photoemission and photocatalytic properties of ZnO NP could be a new insight into the realization of high performance and low cost UV laser devices.
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4
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Tang J, Liu X, Yang C, Zhang Z, Sun R, Li H, Li C, Wang F. A carbon-rich nanofiber framework based on a conjugated arylacetylene polymer for photocathodic enzymatic bioanalysis. RSC Adv 2019; 9:42533-42542. [PMID: 35542846 PMCID: PMC9076658 DOI: 10.1039/c9ra09157b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 12/06/2019] [Indexed: 01/11/2023] Open
Abstract
The metal-free photocathode fabricated by porous carbon-rich nanofiber framework of PTEB film realized “signal-off” photocathodic bioanalysis of glucose.
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Affiliation(s)
- Junyan Tang
- Key Laboratory of Biomedical Functional Materials
- School of Science
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Xiaoya Liu
- Key Laboratory of Biomedical Functional Materials
- School of Science
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Chengwei Yang
- Key Laboratory of Biomedical Functional Materials
- School of Science
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Zhening Zhang
- Key Laboratory of Biomedical Functional Materials
- School of Science
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Rui Sun
- Key Laboratory of Biomedical Functional Materials
- School of Science
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Hongmei Li
- Key Laboratory of Biomedical Functional Materials
- School of Science
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Caolong Li
- Key Laboratory of Biomedical Functional Materials
- School of Science
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Fei Wang
- Key Laboratory of Biomedical Functional Materials
- School of Science
- China Pharmaceutical University
- Nanjing
- P. R. China
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5
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Zhang T, Hou Y, Dzhagan V, Liao Z, Chai G, Löffler M, Olianas D, Milani A, Xu S, Tommasini M, Zahn DRT, Zheng Z, Zschech E, Jordan R, Feng X. Copper-surface-mediated synthesis of acetylenic carbon-rich nanofibers for active metal-free photocathodes. Nat Commun 2018; 9:1140. [PMID: 29555937 PMCID: PMC5859183 DOI: 10.1038/s41467-018-03444-0] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 02/14/2018] [Indexed: 11/21/2022] Open
Abstract
The engineering of acetylenic carbon-rich nanostructures has great potential in many applications, such as nanoelectronics, chemical sensors, energy storage, and conversion, etc. Here we show the synthesis of acetylenic carbon-rich nanofibers via copper-surface-mediated Glaser polycondensation of 1,3,5-triethynylbenzene on a variety of conducting (e.g., copper, graphite, fluorine-doped tin oxide, and titanium) and non-conducting (e.g., Kapton, glass, and silicon dioxide) substrates. The obtained nanofibers (with optical bandgap of 2.51 eV) exhibit photocatalytic activity in photoelectrochemical cells, yielding saturated cathodic photocurrent of ca. 10 µA cm-2 (0.3-0 V vs. reversible hydrogen electrode). By incorporating thieno[3,2-b]thiophene units into the nanofibers, a redshift (ca. 100 nm) of light absorption edge and twofold of the photocurrent are achieved, rivalling those of state-of-the-art metal-free photocathodes (e.g., graphitic carbon nitride of 0.1-1 µA cm-2). This work highlights the promise of utilizing acetylenic carbon-rich materials as efficient and sustainable photocathodes for water reduction.
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Affiliation(s)
- Tao Zhang
- Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstrasse 4, 01062, Dresden, Germany
| | - Yang Hou
- Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstrasse 4, 01062, Dresden, Germany
- Key Laboratory of Biological Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Volodymyr Dzhagan
- Semiconductor Physics, Chemnitz University of Technology, Reichnhainer Strasse 70, 09126, Chemnitz, Germany
| | - Zhongquan Liao
- Fraunhofer Institute for Ceramic Technologies and Systems (IKTS), Maria-Reiche-Strasse 2, 01109, Dresden, Germany
| | - Guoliang Chai
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (CAS), Fuzhou, 350002, China
| | - Markus Löffler
- Dresden Center for Nanoanalysis (DCN), Dresden University of Technology, Helmholtzstrasse 18, 01069, Dresden, Germany
| | - Davide Olianas
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica 'G. Natta', Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milano, Italy
| | - Alberto Milani
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica 'G. Natta', Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milano, Italy
| | - Shunqi Xu
- Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstrasse 4, 01062, Dresden, Germany
| | - Matteo Tommasini
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica 'G. Natta', Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milano, Italy
| | - Dietrich R T Zahn
- Semiconductor Physics, Chemnitz University of Technology, Reichnhainer Strasse 70, 09126, Chemnitz, Germany
| | - Zhikun Zheng
- Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstrasse 4, 01062, Dresden, Germany
| | - Ehrenfried Zschech
- Fraunhofer Institute for Ceramic Technologies and Systems (IKTS), Maria-Reiche-Strasse 2, 01109, Dresden, Germany
- Dresden Center for Nanoanalysis (DCN), Dresden University of Technology, Helmholtzstrasse 18, 01069, Dresden, Germany
| | - Rainer Jordan
- Chair of Macromolecular Chemistry, School of Science, Dresden University of Technology, Mommsenstrasse 4, 01069, Dresden, Germany
| | - Xinliang Feng
- Center for Advancing Electronics Dresden (cfaed) and Department of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstrasse 4, 01062, Dresden, Germany.
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6
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Bera S, Ghosh S, Basu RN. Fabrication of Bi2S3/ZnO heterostructures: an excellent photocatalyst for visible-light-driven hydrogen generation and photoelectrochemical properties. NEW J CHEM 2018. [DOI: 10.1039/c7nj03424e] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Bi2S3/ZnO heterostructures were synthesized, showing a high catalytic effect in photocatalytic hydrogen generation and organic dye degradation under visible light.
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Affiliation(s)
- Susmita Bera
- CSIR-Central Glass and Ceramic Research Institute
- Kolkata – 700032
- India
| | - Srabanti Ghosh
- CSIR-Central Glass and Ceramic Research Institute
- Kolkata – 700032
- India
| | - Rajendra N. Basu
- CSIR-Central Glass and Ceramic Research Institute
- Kolkata – 700032
- India
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7
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Kundu S, Maiti S, Ghosh D, Roy CN, Saha A. Aqueous Synthesis of Protein-Encapsulated ZnSe Quantum Dots and Physical Significance of Semiconductor-Induced Cu II Ion Sensing. Chemphyschem 2017; 18:2533-2540. [PMID: 28581632 DOI: 10.1002/cphc.201700361] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/22/2017] [Indexed: 02/03/2023]
Abstract
In view of their promising bio-applicability, we have synthesized water-soluble bovine serum albumin (BSA)-encapsulated ZnSe quantum dots (QDs) with visible emission with longer average luminescence lifetimes of approximately 125 ns at ambient conditions. BSA-ZnSe QDs are shown to be efficient selective copper ion probes in the presence of physiologically important metal ions through luminescence quenching with a high Stern-Volmer constant (3.3×105 m-1 ). The mechanism of sensing has been explained in terms of electron transfer processes and the apparent rate of electron transfer (Ket ) from ZnSe QDs to Cu2+ has been calculated to be 2.8×108 s-1 . It is demonstrated that the negative conduction band potential plays a major role in the feasibility of the electron transfer process, which is reflected in the higher efficacy of ZnSe QDs in sensing copper(II) ions over other group II-VI quantum dots, namely, CdSe, ZnS, or CdS. The results observed with cysteine-capped QDs are almost identical to those with BSA-encapsulated QDs and this presumably negates the possible reason of CuII ion induced quenching ascribed to its binding with surface groups or replacement of metal sites as proposed by several groups previously.
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Affiliation(s)
- Somashree Kundu
- UGC-DAE Consortium for Scientific Research, Kolkata Centre, III/LB-8 Bidhannagar, Kolkata, 700098, India
| | - Susmita Maiti
- UGC-DAE Consortium for Scientific Research, Kolkata Centre, III/LB-8 Bidhannagar, Kolkata, 700098, India
| | - Debasmita Ghosh
- UGC-DAE Consortium for Scientific Research, Kolkata Centre, III/LB-8 Bidhannagar, Kolkata, 700098, India
| | - Chandra Nath Roy
- UGC-DAE Consortium for Scientific Research, Kolkata Centre, III/LB-8 Bidhannagar, Kolkata, 700098, India
| | - Abhijit Saha
- UGC-DAE Consortium for Scientific Research, Kolkata Centre, III/LB-8 Bidhannagar, Kolkata, 700098, India
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8
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Sheng X, Liu Z, Zeng R, Chen L, Feng X, Jiang L. Enhanced Photocatalytic Reaction at Air–Liquid–Solid Joint Interfaces. J Am Chem Soc 2017; 139:12402-12405. [DOI: 10.1021/jacs.7b07187] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xia Sheng
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Zhen Liu
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Ruosha Zeng
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Liping Chen
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Xinjian Feng
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Lei Jiang
- School
of Chemistry and Environment, Beihang University, Beijing 100191, People’s Republic of China
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9
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Application of nanocrystalline CdTe quantum dots in chemical analysis: Implementation of chemo-sensing schemes based on analyte-triggered photoluminescence modulation. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.10.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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10
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Enhanced Charge Separation and FRET at Heterojunctions between Semiconductor Nanoparticles and Conducting Polymer Nanofibers for Efficient Solar Light Harvesting. Sci Rep 2015; 5:17313. [PMID: 26611253 PMCID: PMC4661426 DOI: 10.1038/srep17313] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 09/21/2015] [Indexed: 01/19/2023] Open
Abstract
Energy harvesting from solar light employing nanostructured materials offer an economic way to resolve energy and environmental issues. We have developed an efficient light harvesting heterostructure based on poly(diphenylbutadiyne) (PDPB) nanofibers and ZnO nanoparticles (NPs) via a solution phase synthetic route. ZnO NPs (~20 nm) were homogeneously loaded onto the PDPB nanofibers as evident from several analytical and spectroscopic techniques. The photoinduced electron transfer from PDPB nanofibers to ZnO NPs has been confirmed by steady state and picosecond-resolved photoluminescence studies. The co-sensitization for multiple photon harvesting (with different energies) at the heterojunction has been achieved via a systematic extension of conjugation from monomeric to polymeric diphenyl butadiyne moiety in the proximity of the ZnO NPs. On the other hand, energy transfer from the surface defects of ZnO NPs (~5 nm) to PDPB nanofibers through Förster Resonance Energy Transfer (FRET) confirms the close proximity with molecular resolution. The manifestation of efficient charge separation has been realized with ~5 fold increase in photocatalytic degradation of organic pollutants in comparison to polymer nanofibers counterpart under visible light irradiation. Our results provide a novel approach for the development of nanoheterojunctions for efficient light harvesting which will be helpful in designing future solar devices.
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11
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Dwiecki K, Neunert G, Nogala-Kałucka M, Polewski K. Fluorescence quenching studies on the interaction of catechin-quinone with CdTe quantum dots. Mechanism elucidation and feasibility studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 149:523-530. [PMID: 25978020 DOI: 10.1016/j.saa.2015.04.100] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 04/28/2015] [Indexed: 06/04/2023]
Abstract
Changes of the photoluminescent properties of QD in the presence of oxidized catechin (CQ) were investigated by absorption, steady-state fluorescence, fluorescence lifetime and dynamic light scattering measurements. Photoluminescence intensity and fluorescence lifetime was decreasing with increasing CQ concentration. Dynamic light scattering technique found the hydrodynamic diameter of QD suspension in water is in range of 45 nm, whereas in presence of CQ increased to mean values of 67 nm. Calculated from absorption peak position of excition band indicated on average QD size of 3.2 nm. Emission spectroscopy and time-resolved emission studies confirmed preservation of electronic band structure in QD-CQ aggregates. On basis of the presented results, the elucidated mechanism of QD fluorescence quenching is a result of the interaction between QD and CQ due to electron transfer and electrostatic attraction. The results of fluorescence quenching of water-soluble CdTe quantum dot (QD) capped with thiocarboxylic acid were used to implement a simple and fast method to determine the presence of native antioxidant quinones in aqueous solutions. Feasibility studies on this method carried out with oxidized catechin showed a linear relation between the QD emission and quencher concentration, in range from 1 up to 200 μM. The wide linear range of concentration dependence makes it possible to apply this method for the fast and sensitive detection of quinones in solutions.
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Affiliation(s)
- Krzysztof Dwiecki
- Poznan Life Sciences University, Department of Biotechnology and Food Analysis, 60-637 Poznan, ul. Mazowiecka 34, Poland
| | - Grażyna Neunert
- Poznan Life Sciences University, Department of Physics, 60-637 Poznan, ul. Wojska Polskiego 38/42, Poland
| | - Małgorzata Nogala-Kałucka
- Poznan Life Sciences University, Department of Biotechnology and Food Analysis, 60-637 Poznan, ul. Mazowiecka 34, Poland
| | - Krzysztof Polewski
- Poznan Life Sciences University, Department of Physics, 60-637 Poznan, ul. Wojska Polskiego 38/42, Poland.
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12
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Ghosh S, Kouamé NA, Ramos L, Remita S, Dazzi A, Deniset-Besseau A, Beaunier P, Goubard F, Aubert PH, Remita H. Conducting polymer nanostructures for photocatalysis under visible light. NATURE MATERIALS 2015; 14:505-511. [PMID: 25774954 DOI: 10.1038/nmat4220] [Citation(s) in RCA: 303] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 01/06/2015] [Indexed: 06/04/2023]
Abstract
Visible-light-responsive photocatalysts can directly harvest energy from solar light, offering a desirable way to solve energy and environment issues. Here, we show that one-dimensional poly(diphenylbutadiyne) nanostructures synthesized by photopolymerization using a soft templating approach have high photocatalytic activity under visible light without the assistance of sacrificial reagents or precious metal co-catalysts. These polymer nanostructures are very stable even after repeated cycling. Transmission electron microscopy and nanoscale infrared characterizations reveal that the morphology and structure of the polymer nanostructures remain unchanged after many photocatalytic cycles. These stable and cheap polymer nanofibres are easy to process and can be reused without appreciable loss of activity. Our findings may help the development of semiconducting-based polymers for applications in self-cleaning surfaces, hydrogen generation and photovoltaics.
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Affiliation(s)
- Srabanti Ghosh
- Laboratoire de Chimie Physique, UMR 8000-CNRS, Bât. 349, Université Paris-Sud, 91405 Orsay, France
| | - Natalie A Kouamé
- Laboratoire de Chimie Physique, UMR 8000-CNRS, Bât. 349, Université Paris-Sud, 91405 Orsay, France
| | - Laurence Ramos
- Laboratoire Charles Coulomb (L2C) UMR 5221 CNRS-Université de Montpellier, 34095 Montpellier, France
| | - Samy Remita
- 1] Laboratoire de Chimie Physique, UMR 8000-CNRS, Bât. 349, Université Paris-Sud, 91405 Orsay, France [2] Départment CASER, Ecole SITI, Conservatoire National des Arts et Métiers, CNAM, 292 rue Saint-Martin, 75141 Paris Cedex 03, France
| | - Alexandre Dazzi
- Laboratoire de Chimie Physique, UMR 8000-CNRS, Bât. 349, Université Paris-Sud, 91405 Orsay, France
| | - Ariane Deniset-Besseau
- Laboratoire de Chimie Physique, UMR 8000-CNRS, Bât. 349, Université Paris-Sud, 91405 Orsay, France
| | - Patricia Beaunier
- 1] Sorbonne Universités, UPMC Univ. Paris 06, UMR 7197-CNRS, Laboratoire de Réactivité de Surface, F-75005 Paris, France [2] CNRS, UMR 7197, Laboratoire de Réactivité de Surface, F-75005 Paris, France
| | - Fabrice Goubard
- Laboratoire de Physicochimie des Polymères et des Interfaces (LPPI), Université de Cergy-Pontoise, 95031 Cergy-Pontoise Cedex, France
| | - Pierre-Henri Aubert
- Laboratoire de Physicochimie des Polymères et des Interfaces (LPPI), Université de Cergy-Pontoise, 95031 Cergy-Pontoise Cedex, France
| | - Hynd Remita
- 1] Laboratoire de Chimie Physique, UMR 8000-CNRS, Bât. 349, Université Paris-Sud, 91405 Orsay, France [2] CNRS, Laboratoire de Chimie Physique, UMR 8000, 91405 Orsay, France
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13
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Akshya S, Hariharan PS, Kumar VV, Anthony SP. Surface functionalized fluorescent CdS QDs: selective fluorescence switching and quenching by Cu(2+) and Hg(2+) at wide pH range. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 135:335-341. [PMID: 25084239 DOI: 10.1016/j.saa.2014.06.161] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 06/18/2014] [Accepted: 06/25/2014] [Indexed: 06/03/2023]
Abstract
Fluorescent CdS QDs surface functionalized with organic functional unit, N-(2-hydroxybenzyl)-cysteine (L), has been synthesized using simple wet chemical approach in a single step. The as-prepared L-CdS QDs showed good fluorescence at 542 nm. Fluorescence sensor studies of L-CdS QDs showed selective fluorescence switching (542-600 nm) for Cu(2+) ions and quenching for Hg(2+) ions in aqueous solution. High selectivity of L-CdS QDs for Cu(2+) ions have been confirmed by interference studies. Interestingly, L-CdS QDs showed enhancement in the fluorescence intensity (4-fold) upon reducing pH from 2.0 to 10.0 without changing λmax. Importantly, selective fluorescent switching and quenching for Cu(2+) and Hg(2+) was observed from 2.0 to 10.0 pH range. The practical application of L-CdS QDs fluorescence sensing for Cu(2+) and Hg(2+) have also been demonstrated in real samples such as river, pond, tap and ground water.
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Affiliation(s)
- S Akshya
- School of Chemical & Biotechnology, SASTRA University, Thanjavur 613401, Tamil Nadu, India
| | - P S Hariharan
- School of Chemical & Biotechnology, SASTRA University, Thanjavur 613401, Tamil Nadu, India
| | - V Vinod Kumar
- School of Chemical & Biotechnology, SASTRA University, Thanjavur 613401, Tamil Nadu, India
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14
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Soršak E, Valh JV, Urek ŠK, Lobnik A. Application of PAMAM dendrimers in optical sensing. Analyst 2015; 140:976-89. [DOI: 10.1039/c4an00825a] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this review, recent advances have been reported in those PAMAM dendrimer-based optical sensors that are used for the detection of pH, cations, and other analyte.
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Affiliation(s)
- E. Soršak
- University of Maribor
- Faculty of Mechanical Engineering
- Laboratory for Chemistry and Environmental Protection
- 2000 Maribor
- Slovenia
| | - J. Volmajer Valh
- University of Maribor
- Faculty of Mechanical Engineering
- Laboratory for Chemistry and Environmental Protection
- 2000 Maribor
- Slovenia
| | - Š. Korent Urek
- Institute for Environmental Protection and Sensors
- 2000 Maribor
- Slovenia
| | - A. Lobnik
- University of Maribor
- Faculty of Mechanical Engineering
- Laboratory for Chemistry and Environmental Protection
- 2000 Maribor
- Slovenia
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15
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Sáez L, Molina J, Florea DI, Planells EM, Cabeza MC, Quintero B. Characterization of L-cysteine capped CdTe quantum dots and application to test Cu(II) deficiency in biological samples from critically ill patients. Anal Chim Acta 2013; 785:111-8. [PMID: 23764451 DOI: 10.1016/j.aca.2013.04.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 04/18/2013] [Accepted: 04/26/2013] [Indexed: 01/10/2023]
Abstract
The catalytic activity of copper ion gives, from the physiological point of view, a central role in many biological processes. Variations in the composition and location of cellular copper have been addressed given their physiological and pathological consequences. In this paper L-cysteine capped CdTe quantum dots is used for the fluorimetric determination of Cu(II) in biological samples from healthy individuals and patients admitted to the Intensive Care Units (ICU). An acceptable homogeneity in the CdTe QDs size has been obtained with an average value of 3 nm. No significant alterations in the spectral properties were observed for 2 months when stored in vacutainers at 6°C and a concentration of approximately 2 μM. Data from oxidative stress markers such superoxide dismutase, total antioxidant capacity and DNA damage can be correlated with a Cu(II) deficiency for the ICU patients as measured by flame-atomic absorption spectroscopy (FAAS) and inductively coupled plasma source mass spectrometry (ICP-MS). Aqueous solutions 0.3 μM of L-cysteine capped CdTe QDs in MOPS buffer (6 mM, pH 7.4) used at 21°C in the range 15-60 min after preparation of the sample for the measurements of fluorescence gives contents in Cu(II) for erythrocytes in good agreement with those obtained in FAAS and ICP-MS but the comparative ease of use makes the fluorimetric technique more suitable than the other two techniques for routine analysis.
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Affiliation(s)
- Laura Sáez
- Institute of Nutrition and Food Technology and Department of Physiology, Faculty of Pharmacy, Campus Cartuja, University of Granada, Granada, Spain
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Hao Y, Liu L, Long Y, Wang J, Liu YN, Zhou F. Sensitive photoluminescent detection of Cu2+ in real samples using CdS quantum dots in combination with a Cu2+-reducing reaction. Biosens Bioelectron 2013; 41:723-9. [DOI: 10.1016/j.bios.2012.09.064] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 09/14/2012] [Accepted: 09/27/2012] [Indexed: 11/25/2022]
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Zeng T, Hu Y, Wang N, Xia C, Li S, Zu Y, Liu L, Yao Z, Zhao Y, Wu HC. Effects of different metal ions on the fluorescence of CdSe/ZnS quantum dots capped with various thiolate ligands. Phys Chem Chem Phys 2013; 15:18710-5. [DOI: 10.1039/c3cp52666f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Booth M, Peel R, Partanen R, Hondow N, Vasilca V, Jeuken LJC, Critchley K. Amphipol-encapsulated CuInS2/ZnS quantum dots with excellent colloidal stability. RSC Adv 2013. [DOI: 10.1039/c3ra43846e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Wang Q, Tan C. Terbium hybrid particles with spherical shape as luminescent probe for detection of Cu2+ and Fe3+ in water. Anal Chim Acta 2011; 708:111-5. [PMID: 22093352 DOI: 10.1016/j.aca.2011.09.034] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 09/16/2011] [Accepted: 09/29/2011] [Indexed: 11/17/2022]
Abstract
A novel green emissive terbium inorganic-polymeric hybrid particle was designed and this material could detect cations in water. Polyvinyl alcohol as an amphiphilic surfactant rendered the powders dispersible in water with regular round shape (10-20 μm). Interestingly, we noticed that not only Cu(2+) (detection limit 10(-4)M) but also Fe(3+) (detection limit 10(-4) M) can give rise to emission quenching to this target material in comparison with K(+), Na(+), Fe(2+), Mn(2+), Pd(2+), Cd(2+) and Co(2+) (10(-3) mol L(-1)). We regarded that the coordination interactions between ligand and metal ions resulted in these quenching processes. Additionally, it was found that the sensing material can be repeatedly used at least 5 cycles. More importantly, this novel material demonstrated higher thermal-stability in aqueous media than pure silica hybrid material.
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Affiliation(s)
- Qianming Wang
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, PR China.
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Beaune G, Tamang S, Bernardin A, Bayle-Guillemaud P, Fenel D, Schoehn G, Vinet F, Reiss P, Texier I. Luminescence of polyethylene glycol coated CdSeTe/ZnS and InP/ZnS nanoparticles in the presence of copper cations. Chemphyschem 2011; 12:2247-54. [PMID: 21661091 DOI: 10.1002/cphc.201100266] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Indexed: 11/11/2022]
Abstract
The use of click chemistry for quantum dot (QD) functionalization could be very promising for the development of bioconjugates dedicated to in vivo applications. Alkyne-azide ligation usually requires copper(I) catalysis. The luminescence response of CdSeTe/ZnS nanoparticles coated with polyethylene glycol (PEG) is studied in the presence of copper cations, and compared to that of InP/ZnS QDs coated with mercaptoundecanoic acid (MUA). The quenching mechanisms appear different. Luminescence quenching occurs without any wavelength shift in the absorption and emission spectra for the CdSeTe/ZnS/PEG nanocrystals. In this case, the presence of copper in the ZnS shell is evidenced by energy-filtered transmission electron microscopy (EF-TEM). By contrast, in the case of InP/ZnS/MUA nanocrystals, a redshift of the excitation and emission spectra, accompanied by an increase in absorbance and a decrease in photoluminescence, is observed. For CdSeTe/ZnS/PEG nanocrystals, PL quenching is enhanced for QDs with 1) smaller inorganic-core diameter, 2) thinner PEG shell, and 3) hydroxyl terminal groups. Whereas copper-induced PL quenching can be interesting for the design of sensitive cation sensors, copper-free click reactions should be used for the efficient functionalization of nanocrystals dedicated to bioapplications, in order to achieve highly luminescent QD bioconjugates.
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Affiliation(s)
- Grégory Beaune
- LETI-DTBS-LFCM, Commissariat à l'Énergie Atomique, Grenoble, France
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Priyam A, Blumling DE, Knappenberger KL. Synthesis, characterization, and self-organization of dendrimer-encapsulated HgTe quantum dots. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:10636-10644. [PMID: 20481491 DOI: 10.1021/la100866z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Mercury telluride (HgTe) quantum dots (QDs) were synthesized in methanol at 5 degrees C using generation 5 (G5) and 7 (G7) polyamidoamine (PAMAM) dendrimers, which function both as nucleation sites and as nanoparticle stabilizers. Transmission electron microscopy (TEM) data indicate these particles were slightly oblate, with an average aspect ratio of 1.3 +/- 0.1 and a minor axis of 2.6 +/- 0.3 nm. The crystal phase was determined to be coloradoite (cubic system) by analysis of the electron diffraction pattern. Absorption maxima for HgTe QDs ranged from 950 to 970 nm, depending on the dendrimer generation and concentration. QD size distribution was optimized by careful variation of the Hg(2+):dendrimer surface group molar ratio for both G5 and G7 dendrimers. An increase in molar ratio from 1:0.5 to 1:4 resulted in a decrease in the half-width at half-maximum (HWHM) of the HgTe bandgap absorption from 68 +/- 3 to 52 +/- 2 nm, indicating a size distribution focusing of 23 +/- 4%. Second-derivative analysis of HgTe QD FTIR absorption spectra suggested that the quantum dots were fully encapsulated by a single G7 dendrimer, whereas multiple G5 dendrimers were necessary to stabilize a single nanoparticle. TEM and FTIR data revealed that the HgTe QDs form two-dimensional necklace-type arrays through a self-organization process, which proceeds through interpenetration of dendritic arms. TEM data further indicated that the average nanonecklace contained 10-15 QDs with an average inter-QD separation of 1.3 +/- 0.7 nm and a total chain length of 46 +/- 6 nm.
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Affiliation(s)
- Amiya Priyam
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, USA
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Probing of ascorbic acid by CdS/dendrimer nanocomposites: a spectroscopic investigation. Anal Bioanal Chem 2010; 397:1573-82. [DOI: 10.1007/s00216-010-3654-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2010] [Revised: 03/01/2010] [Accepted: 03/13/2010] [Indexed: 12/23/2022]
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Jańczewski D, Tomczak N, Liu S, Han MY, Vancso GJ. Covalent assembly of functional inorganic nanoparticles by “click” chemistry in water. Chem Commun (Camb) 2010; 46:3253-5. [DOI: 10.1039/b921848c] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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