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La Rosa M, Payne EH, Credi A. Semiconductor Quantum Dots as Components of Photoactive Supramolecular Architectures. ChemistryOpen 2020; 9:200-213. [PMID: 32055433 PMCID: PMC7008307 DOI: 10.1002/open.201900336] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/08/2020] [Indexed: 11/10/2022] Open
Abstract
Luminescent quantum dots (QDs) are colloidal semiconductor nanocrystals consisting of an inorganic core covered by a molecular layer of organic surfactants. Although QDs have been known for more than thirty years, they are still attracting the interest of researchers because of their unique size-tunable optical and electrical properties arising from quantum confinement. Moreover, the controlled decoration of the QD surface with suitable molecular species enables the rational design of inorganic-organic multicomponent architectures that can show a vast array of functionalities. This minireview highlights the recent progress in the use of surface-modified QDs - in particular, those based on cadmium chalcogenides - as supramolecular platforms for light-related applications such as optical sensing, triplet photosensitization, photocatalysis and phototherapy.
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Affiliation(s)
- Marcello La Rosa
- CLAN-Center for Light Activated Nanostructures Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, ViaGobetti 10140129BolognaItaly
- Dipartimento di Scienze e Tecnologie Agro-alimentariUniversità di BolognaViale Fanin 5040127BolognaItaly
| | - Emily H. Payne
- CLAN-Center for Light Activated Nanostructures Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, ViaGobetti 10140129BolognaItaly
- EaStChem School of ChemistryThe University of EdinburghDavid Brewster RoadEdinburghEH9 3FJUK
| | - Alberto Credi
- CLAN-Center for Light Activated Nanostructures Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, ViaGobetti 10140129BolognaItaly
- Dipartimento di Chimica Industriale “Toso Montanari”Università di BolognaViale Risorgimento 440136BolognaItaly
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Premkumar S, Nataraj D, Bharathi G, Ramya S, Thangadurai TD. Highly Responsive Ultraviolet Sensor Based on ZnS Quantum Dot Solid with Enhanced Photocurrent. Sci Rep 2019; 9:18704. [PMID: 31822730 PMCID: PMC6904578 DOI: 10.1038/s41598-019-55097-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 11/19/2019] [Indexed: 11/11/2022] Open
Abstract
Detection of visible blind UV radiation is not only interesting but also of technologically important. Herein, we demonstrate the efficient detection of UV radiation by using cluster like ZnS quantum dot solid nanostructures prepared by simple reflux condensation technique. The short-chain ligand 3-mercaptopropionic acid (MPA) involved in the synthesis lead to the cluster like formation of ZnS quantum dots into solids upon prolonged synthesis conditions. The ZnS QD solid formation resulted in the strong delocalization of electronic wave function between the neighboring quantum dots. It increases the photocurrent value, which can be further confirmed by the decrease in the average lifetime values from 64 to 4.6 ns upon ZnS cluster like QD solid formation from ZnS QDs. The ZnS quantum dot solid based UV sensor shows good photocurrent response and a maximum responsivity of 0.31 (A/W) at a wavelength of 390 nm, is not only competitive when compared with previous reports but also better than ZnS and metal oxide-based photodetectors. The device exhibits a high current value under low-intensity UV light source and an on/off ratio of IUV/Idark = 413 at zero biasing voltage with a fast response. Further, photocurrent device has been constructed using ZnS quantum dot solid nanostructures with graphene hybrids as an active layer to improve the enhancement of photoresponsivity.
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Affiliation(s)
- Sellan Premkumar
- Quantum Materials and Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India.
- School of Chemistry and Chemical Engineering, Tianjin Polytechnic University, Tianjin, 300387, China.
- Tianjin Key Laboratory of Green Chemistry and Process Engineering, and School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China.
| | - Devaraj Nataraj
- Quantum Materials and Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India.
- UGC-CPEPA Centre for Advanced Studies in Physics for the development of Solar Energy Materials and Devices, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India.
| | - Ganapathi Bharathi
- Quantum Materials and Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India
| | - Subramaniam Ramya
- Quantum Materials and Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India
| | - T Daniel Thangadurai
- Department of Nanoscience and Technology, Sri Ramakrishna Engineering College, Coimbatore, Tamil Nadu, 641022, India
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3
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Badreddine K, Korek M. Electronic Structure with Dipole Moment and Rovibrational Calculation of Cadmium Chalcogenide Molecules CdX (X = Se, Te). ACS OMEGA 2019; 4:920-931. [PMID: 31459368 PMCID: PMC6648156 DOI: 10.1021/acsomega.8b01306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 10/31/2018] [Indexed: 06/10/2023]
Abstract
Ab initio calculations of 51 electronic states in the representation 2s+1Λ(±) of CdX (X = Se, Te) molecules have been carried out by using the complete active space self-consistent field and multireference configuration interaction (single and double excitations with the Davidson correction). The potential energy along with the static and transition dipole moment curves for the investigated electronic states of the CdX molecules has been mapped. Consequently, the spectroscopic constants R e, ωe, B e, and T e have been computed for the bound states. The spectroscopic dissociation energy D e, the zero-point energy, and the ionicity are also calculated for the bound electronic states X3Π, (1)1Σ+, (1)1Π, and (1)3Σ+. Rovibrational calculation is performed for the X3Π, (1)1Σ+, (1)1Π, and (1)3Σ+ states of CdSe together with the X3Π, (1)1Σ+, and (1)1Π states of a CdTe molecule. The Einstein coefficients of spontaneous and induced emissions, A 21 and B 21, are computed for the transition between the electronic states (1)3Σ+ and X3Π. In the present work, the values are well-consistent with those available in the literature.
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Affiliation(s)
- Khalil Badreddine
- Faculty of Science, Beirut
Arab University, P.O. Box 11-5020
Riad El Solh, Beirut 1107 2809, Lebanon
| | - Mahmoud Korek
- Faculty of Science, Beirut
Arab University, P.O. Box 11-5020
Riad El Solh, Beirut 1107 2809, Lebanon
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4
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Chern M, Kays JC, Bhuckory S, Dennis AM. Sensing with photoluminescent semiconductor quantum dots. Methods Appl Fluoresc 2019; 7:012005. [PMID: 30530939 PMCID: PMC7233465 DOI: 10.1088/2050-6120/aaf6f8] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Fluorescent sensors benefit from high signal-to-noise and multiple measurement modalities, enabling a multitude of applications and flexibility of design. Semiconductor nanocrystal quantum dots (QDs) are excellent fluorophores for sensors because of their extraordinary optical properties. They have high thermal and photochemical stability compared to organic dyes or fluorescent proteins and are extremely bright due to their large molar cross-sections. In contrast to organic dyes, QD emission profiles are symmetric, with relatively narrow bandwidths. In addition, the size tunability of their emission color, which is a result of quantum confinement, make QDs exceptional emitters with high color purity from the ultra-violet to near infrared wavelength range. The role of QDs in sensors ranges from simple fluorescent tags, as used in immunoassays, to intrinsic sensors that utilize the inherent photophysical response of QDs to fluctuations in temperature, electric field, or ion concentration. In more complex configurations, QDs and biomolecular recognition moieties like antibodies are combined with a third component to modulate the optical signal via energy transfer. QDs can act as donors, acceptors, or both in energy transfer-based sensors using Förster resonance energy transfer (FRET), nanometal surface energy transfer (NSET), or charge or electron transfer. The changes in both spectral response and photoluminescent lifetimes have been successfully harnessed to produce sensitive sensors and multiplexed devices. While technical challenges related to biofunctionalization and the high cost of laboratory-grade fluorimeters have thus far prevented broad implementation of QD-based sensing in clinical or commercial settings, improvements in bioconjugation methods and detection schemes, including using simple consumer devices like cell phone cameras, are lowering the barrier to broad use of more sensitive QD-based devices.
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Affiliation(s)
- Margaret Chern
- Department of Materials Science and Engineering, Boston University, Boston, United States of America
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5
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Wu B, Liu X, Shi X, Han W, Wang C, Jiang L. Highly photoluminescent and temperature-sensitive P, N, B-co-doped carbon quantum dots and their highly sensitive recognition for curcumin. RSC Adv 2019; 9:8340-8349. [PMID: 35518689 PMCID: PMC9061703 DOI: 10.1039/c9ra00183b] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 03/06/2019] [Indexed: 11/21/2022] Open
Abstract
Temperature-sensitive P, N, B-co-doped carbon quantum dots (PNBCDs) synthesized using one-pot method exhibit many excellent features, such as strong fluorescence, good stability and sensitive detection for curcumin.
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Affiliation(s)
- Bin Wu
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Xiaolong Liu
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Xiaofeng Shi
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Wei Han
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Chunru Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Li Jiang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
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Chen B, Liu J, Yang T, Chen L, Hou J, Feng C, Huang CZ. Development of a portable device for Ag + sensing using CdTe QDs as fluorescence probe via an electron transfer process. Talanta 2018; 191:357-363. [PMID: 30262071 DOI: 10.1016/j.talanta.2018.08.088] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/25/2018] [Accepted: 08/31/2018] [Indexed: 02/03/2023]
Abstract
Ag+ as one of the most commonly seen toxic heavy metal ions is involved in numerous vital biological processes, which would cause fatal damages and environmental contamination when Ag+ is excessive. In the present work, CdTe quantum dots (QDs) with green, orange, and red emission capped by mercaptoacetic acid (TGA) were synthesized at one time by controlling the synthesis time and utilized for Ag+ detection. Both fluorescence spectral red-shift and intensity decrease could be used for Ag+ discrimination. Fluorescence lifetime, Zeta potential, and XRD, etc. were carried out to analyze the detection mechanism. Results displayed that surface passivation and electron transfer due to binding effects of Ag+ to Te atom on traps of QDs could be relied on to explain the sensing mechanism. Additionally, in accordance with PCA analysis, Ag+ could be also be successfully differentiated from Hg2+ and the other metal ions. Importantly, a home-made portable device based on a 32 bit embed Micro Control Unit (MCU) system was first proposed for Ag+ detection. The power supply system adopt the mini-sized lithium cell instead of the power supply system, which ensure its practical applicability. The relative position of light source and detector is set at 90° to minimize the interference. According to the detection results, the linear detection range using the device was from 5 nM to 200 nM (with a larger coefficient of determination, R2), and the detection limit was calculated to be about 5 nM, which indicated that this proposed method and device could fulfil the practical application requirements.
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Affiliation(s)
- Bin Chen
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, Chongqing Key Laboratory of Non-linear Circuit and Intelligent Information Processing, College of Electronic and Information Engineering, Southwest University, Chongqing 400715, China; Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, China
| | - Junjie Liu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, China
| | - Tong Yang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, China
| | - Lin Chen
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, China
| | - Jia Hou
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, China
| | - Changhao Feng
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, Chongqing Key Laboratory of Non-linear Circuit and Intelligent Information Processing, College of Electronic and Information Engineering, Southwest University, Chongqing 400715, China; Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, China
| | - Cheng Zhi Huang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, China.
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Wu B, Shi X, Han W, Wang T, Wang C, Jiang L. A double fluorescent nanoprobe based on phosphorus/nitrogen co-doped carbon dots for detecting dichromate ions and dopamine. RSC Adv 2018; 8:31793-31802. [PMID: 35548219 PMCID: PMC9085752 DOI: 10.1039/c8ra06120c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 08/28/2018] [Indexed: 01/07/2023] Open
Abstract
An “on–off–on” fluorescent phosphorus/nitrogen co-doped carbon dot (PNCD) probe was explored for the determination of Cr(vi) and dopamine resulting from the inner filter effect (IFE). The blue-emitting carbon dots with high quantum yields of 25.47% as well as a narrow size distribution were synthesized by a rapid, convenient route using H3PO4 and ethylenediamine as the precursors without any surface passivation. A wide linear region in the range of 7–70 μM with a detection limit of 0.71 μM was achieved for Cr(vi). Moreover, the proper reductants can weaken the inner filter effect to recover the PNCD fluorescence by converting Cr(vi) into Cr(iii). Therefore, the PNCDs/Cr(vi) hybrid could also be used as an “off–on” fluorescent probe for detecting dopamine (DA) with a detection limit of 0.49 μM. Consequently, the PNCDs could serve as a powerful fluorescent bi-sensor for detection of both Cr(vi) and DA in practical applications. An “on–off–on” fluorescent phosphorus/nitrogen co-doped carbon dot (PNCD) probe was explored for the determination of Cr(vi) and dopamine resulting from the inner filter effect (IFE).![]()
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Affiliation(s)
- Bin Wu
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Xiaofeng Shi
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Wei Han
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Taishan Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Chunru Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Li Jiang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190
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8
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More PV, Hiragond CB, Jadhav A, Kush P, Sapra S, Khanna PK. Instant Synthesis of White Light-Emitting Cd Chalcogenide Nanoclusters Using Homogenization Method. ChemistrySelect 2017. [DOI: 10.1002/slct.201702366] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Priyesh V. More
- Nanochemistry/Quantum Dots R&D Laboratory; Department of Applied Chemistry; Defence Institute of Advanced Technology; Girinagar-411025 Pune India
| | - Chaitanya B. Hiragond
- Nanochemistry/Quantum Dots R&D Laboratory; Department of Applied Chemistry; Defence Institute of Advanced Technology; Girinagar-411025 Pune India
| | - Aditi Jadhav
- Nanochemistry/Quantum Dots R&D Laboratory; Department of Applied Chemistry; Defence Institute of Advanced Technology; Girinagar-411025 Pune India
| | - Priya Kush
- Department of Chemistry; Indian Institute of Technology Delhi, Hauz Khas; New Delhi 110016 India
| | - Sameer Sapra
- Department of Chemistry; Indian Institute of Technology Delhi, Hauz Khas; New Delhi 110016 India
| | - Pawan K. Khanna
- Nanochemistry/Quantum Dots R&D Laboratory; Department of Applied Chemistry; Defence Institute of Advanced Technology; Girinagar-411025 Pune India
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9
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Gawai UP, Deshpande UP, Dole BN. A study on the synthesis, longitudinal optical phonon–plasmon coupling and electronic structure of Al doped ZnS nanorods. RSC Adv 2017. [DOI: 10.1039/c6ra28180j] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
First principles density functional theory (DFT) calculations were employed to study the structural and electronic properties of pure and Al doped ZnS nanorods.
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Affiliation(s)
- U. P. Gawai
- Advanced Materials Research Laboratory
- Department of Physics
- Dr Babasaheb Ambedkar Marathwada University
- Aurangabad – 431 004
- India
| | - U. P. Deshpande
- UGC-DAE Consortium for Scientific Research
- University Campus
- Indore – 425 017
- India
| | - B. N. Dole
- Advanced Materials Research Laboratory
- Department of Physics
- Dr Babasaheb Ambedkar Marathwada University
- Aurangabad – 431 004
- India
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10
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Murray AJ, Roussel J, Rolley J, Woodhall F, Mikheenko IP, Johnson DB, Gomez-Bolivar J, Merroun M, Macaskie LE. Biosynthesis of zinc sulfide quantum dots using waste off-gas from a metal bioremediation process. RSC Adv 2017. [DOI: 10.1039/c6ra17236a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Waste H2S biogas from a mine-water remediation bioprocess is used to make zinc sulfide quantum dots which are identical to ZnS QDs made by chemical methods.
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Affiliation(s)
- Angela J. Murray
- Unit of Functional Bionanomaterials
- School of Biosciences
- University of Birmingham
- Birmingham B15 2TT
- UK
| | - Jimmy Roussel
- Unit of Functional Bionanomaterials
- School of Biosciences
- University of Birmingham
- Birmingham B15 2TT
- UK
| | - John Rolley
- Unit of Functional Bionanomaterials
- School of Biosciences
- University of Birmingham
- Birmingham B15 2TT
- UK
| | - Frankie Woodhall
- Unit of Functional Bionanomaterials
- School of Biosciences
- University of Birmingham
- Birmingham B15 2TT
- UK
| | - Iryna P. Mikheenko
- Unit of Functional Bionanomaterials
- School of Biosciences
- University of Birmingham
- Birmingham B15 2TT
- UK
| | | | - Jaime Gomez-Bolivar
- Department of Microbiology
- Faculty of Sciences
- University of Granada
- Campus Fuentenueva
- Granada
| | - Mohamed L. Merroun
- Department of Microbiology
- Faculty of Sciences
- University of Granada
- Campus Fuentenueva
- Granada
| | - Lynne E. Macaskie
- Unit of Functional Bionanomaterials
- School of Biosciences
- University of Birmingham
- Birmingham B15 2TT
- UK
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11
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Gawai UP, Dole BN. Local structural studies on Co doped ZnS nanowires by synchrotron X-ray atomic pair distribution function and micro-Raman shift. RSC Adv 2017. [DOI: 10.1039/c7ra02668d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The atomic structures of nanowires were studied by X-ray atomic pair distribution function analysis and total synchrotron X-ray scattering data. A PDF method was used to describe a wurtzite and zinc-blended mixed phase model.
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Affiliation(s)
- U. P. Gawai
- Advanced Materials Research Laboratory
- Department of Physics
- Dr. Babasaheb Ambedkar Marathwada University
- Aurangabad-431 004
- India
| | - B. N. Dole
- Advanced Materials Research Laboratory
- Department of Physics
- Dr. Babasaheb Ambedkar Marathwada University
- Aurangabad-431 004
- India
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12
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Preparation of fluorescent N,P-doped carbon dots derived from adenosine 5′-monophosphate for use in multicolor bioimaging of adenocarcinomic human alveolar basal epithelial cells. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-2039-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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13
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Gong T, Liu J, Liu X, Liu J, Xiang J, Wu Y. A sensitive and selective sensing platform based on CdTe QDs in the presence of l -cysteine for detection of silver, mercury and copper ions in water and various drinks. Food Chem 2016; 213:306-312. [DOI: 10.1016/j.foodchem.2016.06.091] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 06/14/2016] [Accepted: 06/26/2016] [Indexed: 01/20/2023]
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14
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Gawai UP, Khawal HA, Shripathi T, Dole BN. A study on the synthesis, pair distribution function and diverse properties of cobalt doped ZnS nanowires. CrystEngComm 2016. [DOI: 10.1039/c5ce02253c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fundamental atomic structure of pure and Co doped ZnS nanowires has been studied using pair distribution function (PDF) analysis. It was confirmed that samples have hexagonal (wurtzite) structure. The interatomic distance was calculated using PDF analysis. It was observed that the energy band gap decreases as Co content increases.
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Affiliation(s)
- U. P. Gawai
- Advanced Materials Research Laboratory
- Department of Physics
- Dr. Babasaheb Ambedkar Marathwada University
- Aurangabad 431 004, India
| | - H. A. Khawal
- Advanced Materials Research Laboratory
- Department of Physics
- Dr. Babasaheb Ambedkar Marathwada University
- Aurangabad 431 004, India
| | | | - B. N. Dole
- Advanced Materials Research Laboratory
- Department of Physics
- Dr. Babasaheb Ambedkar Marathwada University
- Aurangabad 431 004, India
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15
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Cd/Hg cationic substitution in magic-sized CdSe clusters: Optical characterization and theoretical studies. Chem Phys 2015. [DOI: 10.1016/j.chemphys.2015.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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Li S, Xing M, Wang H, Zhang L, Zhong Y, Chen L. Determination of tryptophan and tyrosine by chemiluminescence based on a luminol–N-bromosuccinimide–ZnS quantum dots system. RSC Adv 2015. [DOI: 10.1039/c5ra07233f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
ZnS QDs as a catalyst can catalyze luminol–NBS system CL, based on Trp and Tyr can inhibit this system CL intensity, we were designed a rapid and sensitive sensor for determination of Trp and Tyr.
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Affiliation(s)
- Shifeng Li
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
| | - Min Xing
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
| | - Haiyan Wang
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
| | - Li Zhang
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
| | - Yiman Zhong
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
| | - Lei Chen
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
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17
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Cai C, Cheng H, Wang Y, Bao H. Mercaptosuccinic acid modified CdTe quantum dots as a selective fluorescence sensor for Ag+determination in aqueous solutions. RSC Adv 2014. [DOI: 10.1039/c4ra07891h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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18
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Silva ACA, da Silva SW, Morais PC, Dantas NO. Shell thickness modulation in ultrasmall CdSe/CdS(x)Se(1-x)/CdS core/shell quantum dots via 1-thioglycerol. ACS NANO 2014; 8:1913-1922. [PMID: 24460449 DOI: 10.1021/nn406478f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this study, we report on the synthesis of CdSe/CdS core-shell ultrasmall quantum dots (CS-USQDs) using an aqueous-based wet chemistry protocol. The proposed chemical route uses increasing concentration of 1-thioglycerol to grow the CdS shell on top of the as-precipitated CdSe core in a controllable way. We found that lower concentration of 1-thioglycerol (3 mmol) added into the reaction medium limits the growth of the CdSe core, and higher and increasing concentration (5-11 mmol) of 1-thioglycerol promotes the growth of CdS shell on top of the CdSe core in a very controllable way, with an increase from 0.50 to 1.25 nm in shell thickness. The growth of CS-USQDs of CdSe/CdS was confirmed by using different experimental techniques, such as optical absorption (OA) spectroscopy, fluorescence spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and Raman spectroscopy. Data collected from OA were used to obtain the average values of the CdSe core diameter, whereas Raman data were used to assess the average values of the CdSe core diameter and CdS shell thicknesses.
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Affiliation(s)
- Anielle Christine A Silva
- Laboratório de Novos Materiais Isolantes e Semicondutores (LNMIS), Institute of Physics, Federal University of Uberlândia , CP 593, Uberlândia MG 38400-902, Brazil
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Demortière A, Schaller RD, Li T, Chattopadhyay S, Krylova G, Shibata T, dos Santos Claro PC, Rowland CE, Miller JT, Cook R, Lee B, Shevchenko EV. In Situ Optical and Structural Studies on Photoluminesence Quenching in CdSe/CdS/Au Heterostructures. J Am Chem Soc 2014; 136:2342-50. [DOI: 10.1021/ja4092616] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Arnaud Demortière
- Physics
Department, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Richard D. Schaller
- Department
of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston, Illinois 60208, United States
| | | | - Soma Chattopadhyay
- CSRRI-IIT, MRCAT, Sector 10, Bldg 433B, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Physics
Department, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | | | - Tomohiro Shibata
- CSRRI-IIT, MRCAT, Sector 10, Bldg 433B, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Physics
Department, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | | | - Clare E. Rowland
- Department
of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston, Illinois 60208, United States
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20
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Wang M, Niu W, Wu X, Li L, Yang J, Shuang S, Dong C. Fluorescence enhancement detection of uric acid based on water-soluble 3-mercaptopropionic acid-capped core/shell ZnS:Cu/ZnS. RSC Adv 2014. [DOI: 10.1039/c4ra02819h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simple core/shell ZnS:Cu/ZnS QD based fluorescence enhancement system is constructed for detecting uric acid. The method with high sensitivity, selectivity and lower toxicity features was applied for determination of UA in real samples.
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Affiliation(s)
- Meihua Wang
- Institute of Environmental Science
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan, China
| | - Weifen Niu
- Institute of Environmental Science
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan, China
| | - Xin Wu
- Institute of Environmental Science
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan, China
| | - Lixia Li
- Institute of Environmental Science
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan, China
| | - Jun Yang
- Institute of Environmental Science
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan, China
| | - Shaomin Shuang
- Institute of Environmental Science
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan, China
| | - Chuan Dong
- Institute of Environmental Science
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan, China
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21
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Huang H, Chen R, Ma J, Yan L, Zhao Y, Wang Y, Zhang W, Fan J, Chen X. Graphitic carbon nitride solid nanofilms for selective and recyclable sensing of Cu2+ and Ag+ in water and serum. Chem Commun (Camb) 2014; 50:15415-8. [DOI: 10.1039/c4cc06659f] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Graphitic carbon nitride hybrid nanofilms are reported as sensitive, rapid and recyclable sensor for Cu2+ and Ag+, and the sensing in serum demonstrates their potential in medical applications.
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Affiliation(s)
- Heqin Huang
- Department of Physics and Materials Science
- City University of Hong Kong
- Hong Kong SAR, China
- Center of Super-Diamond and Advanced Films (COSDAF)
- City University of Hong Kong
| | - Rui Chen
- Department of Physics and Materials Science
- City University of Hong Kong
- Hong Kong SAR, China
- Center of Super-Diamond and Advanced Films (COSDAF)
- City University of Hong Kong
| | - Jiale Ma
- Department of Physics and Materials Science
- City University of Hong Kong
- Hong Kong SAR, China
| | - Li Yan
- Department of Physics and Materials Science
- City University of Hong Kong
- Hong Kong SAR, China
- Center of Super-Diamond and Advanced Films (COSDAF)
- City University of Hong Kong
| | - Yingqi Zhao
- Department of Physics and Materials Science
- City University of Hong Kong
- Hong Kong SAR, China
- Center of Super-Diamond and Advanced Films (COSDAF)
- City University of Hong Kong
| | - Yu Wang
- Department of Physics and Materials Science
- City University of Hong Kong
- Hong Kong SAR, China
- Center of Super-Diamond and Advanced Films (COSDAF)
- City University of Hong Kong
| | - Wenjun Zhang
- Department of Physics and Materials Science
- City University of Hong Kong
- Hong Kong SAR, China
- Center of Super-Diamond and Advanced Films (COSDAF)
- City University of Hong Kong
| | - Jun Fan
- Department of Physics and Materials Science
- City University of Hong Kong
- Hong Kong SAR, China
| | - Xianfeng Chen
- Department of Physics and Materials Science
- City University of Hong Kong
- Hong Kong SAR, China
- Center of Super-Diamond and Advanced Films (COSDAF)
- City University of Hong Kong
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22
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Ma JP, Wang SQ, Zhao CW, Wang HY, Dong YB. Cu(ii)4L4coordination-driven molecular container: a reusable visual colorimetric sensor for Ag(i) ions. Chem Commun (Camb) 2014; 50:4721-4. [DOI: 10.1039/c4cc00118d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Cu4L4square-like molecular container which can be a reusable visual sensor for Ag+is reported. The present results can be a useful stepwise approach for the construction of heterometallic supramolecular complexes with potential applications.
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Affiliation(s)
- Jian-Ping Ma
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Shen-Qing Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Chao-Wei Zhao
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Hai-Ying Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Yu-Bin Dong
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
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23
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Joicy S, Saravanan R, Prabhu D, Ponpandian N, Thangadurai P. Mn2+ ion influenced optical and photocatalytic behaviour of Mn–ZnS quantum dots prepared by a microwave assisted technique. RSC Adv 2014. [DOI: 10.1039/c4ra08757g] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
(a) Photon absorption and exciton formation, (b) interstitial sulfur emission, (c) interstitial zinc emission, (d) blue emission, (e) electron trapping by Mn ions' d state, (f) orange light emission and (g) orange emission quenching by electrons trapped by the neighbouring Mn2+ ions.
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Affiliation(s)
- S. Joicy
- Centre for Nanoscience and Technology
- Pondicherry University
- Puducherry-605 014, India
| | - R. Saravanan
- Physics Research Centre
- Dhanalakshmi College of Engineering
- Chennai 601 301, India
| | - D. Prabhu
- Centre for Fuel Cell Technology and Centre for Automotive Energy Materials IIT M Research Park
- Chennai-600 113, India
| | - N. Ponpandian
- Department of Nanoscience and Technology
- Bharathiar University
- Coimbatore 641 046, India
| | - P. Thangadurai
- Centre for Nanoscience and Technology
- Pondicherry University
- Puducherry-605 014, India
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Nejdl L, Ruttkay-Nedecky B, Kudr J, Kremplova M, Cernei N, Prasek J, Konecna M, Hubalek J, Zitka O, Kynicky J, Kopel P, Kizek R, Adam V. Behaviour of zinc complexes and zinc sulphide nanoparticles revealed by using screen printed electrodes and spectrometry. SENSORS 2013; 13:14417-37. [PMID: 24233071 PMCID: PMC3871106 DOI: 10.3390/s131114417] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 09/03/2013] [Accepted: 10/08/2013] [Indexed: 01/08/2023]
Abstract
In this study, we focused on microfluidic electrochemical analysis of zinc complexes (Zn(phen)(his)Cl2, Zn(his)Cl2) and ZnS quantum dots (QDs) using printed electrodes. This method was chosen due to the simple (easy to use) instrumentation and variable setting of flows. Reduction signals of zinc under the strictly defined and controlled conditions (pH, temperature, flow rate, accumulation time and applied potential) were studied. We showed that the increasing concentration of the complexes (Zn(phen)(his)Cl2, Zn(his)Cl2) led to a decrease in the electrochemical signal and a significant shift of the potential to more positive values. The most likely explanation of this result is that zinc is strongly bound in the complex and its distribution on the electrode is very limited. Changing the pH from 3.5 to 5.5 resulted in a significant intensification of the Zn(II) reduction signal. The complexes were also characterized by UV/VIS spectrophotometry, chromatography, and ESI-QTOF mass spectrometry.
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Affiliation(s)
- Lukas Nejdl
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Branislav Ruttkay-Nedecky
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Jiří Kudr
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
| | - Monika Kremplova
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
| | - Natalia Cernei
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Jan Prasek
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Marie Konecna
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Jaromir Hubalek
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Ondrej Zitka
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Jindrich Kynicky
- Department of Geology and Pedology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mail:
- Karel Englis College, Sujanovo Square 356/1, Brno CZ-602 00, Czech Republic
| | - Pavel Kopel
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Rene Kizek
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, Brno CZ-613 00, Czech Republic; E-Mails: (L.N.); (B.-R.N.); (J.K.); (M.K.); (N.C.); (M.K.); (O.Z.)
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, Brno CZ-616 00, Czech Republic; E-Mails: (J.P.); (J.H.); (P.K.); (R.K.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +420-545-133-350; Fax: +420-545-212-044
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Khantaw T, Boonmee C, Tuntulani T, Ngeontae W. Selective turn-on fluorescence sensor for Ag+ using cysteamine capped CdS quantum dots: Determination of free Ag+ in silver nanoparticles solution. Talanta 2013; 115:849-56. [DOI: 10.1016/j.talanta.2013.06.053] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 06/25/2013] [Accepted: 06/26/2013] [Indexed: 11/29/2022]
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26
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Zhou YP, Liu EB, Wang J, Chao HY. Highly Ag+ selective tripodal gold(I) acetylide-based "off-on" luminescence chemosensors based on 3(ππ*) emission switching. Inorg Chem 2013; 52:8629-37. [PMID: 23869745 DOI: 10.1021/ic400791a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Newly prepared gold(I) acetylide-based luminescent cation sensors 1c and 1d, which bear a novel three-armed flexible conformation, together with control molecule 2c, were synthesized in four steps. 1c and 1d exhibit the π → π* absorption of the acetylide ligands in fluid solutions and produce the (3)(ππ*) emission of the acetylide ligands in the solid state and degassed THF solution. The (3)(ππ*) emission of 1c in DMSO can be turned on upon addition of Ag(+). The binding ratio between 1c and Ag(+) as well as the binding constant log K were determined as 1:1 and 4.35 ± 0.12 respectively by UV-vis titration experiments. The formation of [1c·Ag](+) adduct, which leads to the appearance of new up-field peaks, was confirmed by (1)H NMR spectroscopic titrations. The control (1)H NMR titration experiments for the acetylide-free analogue 1a and single-armed analogue 2c indicate the acetylide groups and tripodal structures are responsible for the binding of Ag(+). The control experiment for tripodal gold(I) acetylide analogue 1d suggests the change of PPh3 with P(2-Py)Ph2 induces similar binding affinity toward Ag(+) but less selectivity toward Ag(+). Free 1c also exhibits the anion binding affinity toward F(-), but the Ag(+) adduct [1c·Ag](+) shows less affinity toward F(-).
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Affiliation(s)
- Yu-Peng Zhou
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China
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Joshi KV, Joshi BK, Pandya A, Sutariya PG, Menon SK. Calixarene capped ZnS quantum dots as an optical nanoprobe for detection and determination of menadione. Analyst 2012; 137:4647-50. [DOI: 10.1039/c2an35766f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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