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Khaliq N, Ali G, Rasheed MA, Khan M, Xie Y, Schmuki P, Cho SO, Karim S. Multifunctional tunable Cu 2O and CuInS 2 quantum dots on TiO 2 nanotubes for efficient chemical oxidation of cholesterol and ibuprofen. NANOSCALE 2024; 16:12207-12227. [PMID: 38845383 DOI: 10.1039/d4nr00422a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
In this study, a CuInS2/Cu2O/TiO2 nanotube (TNT) heterojunction-based hybrid material is reported for the selective detection of cholesterol and ibuprofen. Anodic TNTs were co-decorated with Cu2O and CuInS2 quantum dots (QDs) using a modified chemical bath deposition (CBD) method. QDs help trigger the chemical oxidation of cholesterol by cathodically generating hydroxyl radicals (˙OH). The small size of QDs can be used to tune the energy levels of electrode materials to the effective redox potential of redox species, resulting in highly improved sensing characteristics. Under optimal conditions, CuInS2/Cu2O/TNTs show the highest sensitivity (∼12 530 μA mM-1 cm-2, i.e. up to 11-fold increase compared to pristine TNTs) for cholesterol detection with a low detection limit (0.013 μM) and a fast response time (1.3 s). The proposed biosensor was successfully employed for the detection of cholesterol in real blood samples. In addition, fast (4 s) and reliable detection of ibuprofen (with a sensitivity of ∼1293 μA mM-1 cm-2) as a water contaminant was achieved using CuInS2/Cu2O/TNTs. The long-term stability and favourable reproducibility of CuInS2/Cu2O/TNTs illustrate a unique concept for the rational design of a stable and high-performance multi-purpose electrochemical sensor.
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Affiliation(s)
- Nilem Khaliq
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad 45650, Pakistan.
- Department of Physics, Women University Swabi, Swabi, Khyber Pakhtunkhwa, Pakistan
- Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Martensstrasse 7, D-91058 Erlangen, Germany.
| | - Ghafar Ali
- Nanomaterials Research Group (NRG), Physics Division, PINSTECH, Islamabad 44000, Pakistan.
| | - Muhammad Asim Rasheed
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad 45650, Pakistan.
| | - Maaz Khan
- Nanomaterials Research Group (NRG), Physics Division, PINSTECH, Islamabad 44000, Pakistan.
| | - Yi Xie
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, No. 122, Luoshi Road, Wuhan 430070, China
| | - Patrik Schmuki
- Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Martensstrasse 7, D-91058 Erlangen, Germany.
| | - Sung Oh Cho
- Department of Nuclear and Quantum Engineering (NQe), Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Shafqat Karim
- Nanomaterials Research Group (NRG), Physics Division, PINSTECH, Islamabad 44000, Pakistan.
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2
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Bodian S, Colchester RJ, Macdonald TJ, Ambroz F, Briceno de Gutierrez M, Mathews SJ, Fong YMM, Maneas E, Welsby KA, Gordon RJ, Collier P, Zhang EZ, Beard PC, Parkin IP, Desjardins AE, Noimark S. CuInS 2 Quantum Dot and Polydimethylsiloxane Nanocomposites for All-Optical Ultrasound and Photoacoustic Imaging. ADVANCED MATERIALS INTERFACES 2021; 8:2100518. [PMID: 34777946 PMCID: PMC8573612 DOI: 10.1002/admi.202100518] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 06/28/2021] [Indexed: 05/13/2023]
Abstract
Dual-modality imaging employing complementary modalities, such as all-optical ultrasound and photoacoustic imaging, is emerging as a well-suited technique for guiding minimally invasive surgical procedures. Quantum dots are a promising material for use in these dual-modality imaging devices as they can provide wavelength-selective optical absorption. The first quantum dot nanocomposite engineered for co-registered laser-generated ultrasound and photoacoustic imaging is presented. The nanocomposites developed, comprising CuInS2 quantum dots and medical-grade polydimethylsiloxane (CIS-PDMS), are applied onto the distal ends of miniature optical fibers. The films exhibit wavelength-selective optical properties, with high optical absorption (> 90%) at 532 nm for ultrasound generation, and low optical absorption (< 5%) at near-infrared wavelengths greater than 700 nm. Under pulsed laser irradiation, the CIS-PDMS films generate ultrasound with pressures exceeding 3.5 MPa, with a corresponding bandwidth of 18 MHz. An ultrasound transducer is fabricated by pairing the coated optical fiber with a Fabry-Pérot (FP) fiber optic sensor. The wavelength-selective nature of the film is exploited to enable co-registered all-optical ultrasound and photoacoustic imaging of an ink-filled tube phantom. This work demonstrates the potential for quantum dots as wavelength-selective absorbers for all-optical ultrasound generation.
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Affiliation(s)
- Semyon Bodian
- Department of Medical Physics and Biomedical EngineeringUniversity College LondonLondonWC1E 6BTUK
- Wellcome/ESPRC Centre for Surgical and Interventional SciencesUniversity College LondonCharles Bell House, 67–73 Riding House StreetLondonW1W 7EJUK
- Materials Chemistry CentreDepartment of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| | - Richard J. Colchester
- Department of Medical Physics and Biomedical EngineeringUniversity College LondonLondonWC1E 6BTUK
- Wellcome/ESPRC Centre for Surgical and Interventional SciencesUniversity College LondonCharles Bell House, 67–73 Riding House StreetLondonW1W 7EJUK
| | - Thomas J. Macdonald
- Materials Chemistry CentreDepartment of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
- Department of Chemistry and Centre for Processable ElectronicsImperial College LondonLondonW12 0BZUK
| | - Filip Ambroz
- Materials Chemistry CentreDepartment of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| | | | - Sunish J. Mathews
- Department of Medical Physics and Biomedical EngineeringUniversity College LondonLondonWC1E 6BTUK
- Wellcome/ESPRC Centre for Surgical and Interventional SciencesUniversity College LondonCharles Bell House, 67–73 Riding House StreetLondonW1W 7EJUK
| | - Yu Man Mandy Fong
- Department of Medical Physics and Biomedical EngineeringUniversity College LondonLondonWC1E 6BTUK
- Wellcome/ESPRC Centre for Surgical and Interventional SciencesUniversity College LondonCharles Bell House, 67–73 Riding House StreetLondonW1W 7EJUK
- Materials Chemistry CentreDepartment of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| | - Efthymios Maneas
- Department of Medical Physics and Biomedical EngineeringUniversity College LondonLondonWC1E 6BTUK
- Wellcome/ESPRC Centre for Surgical and Interventional SciencesUniversity College LondonCharles Bell House, 67–73 Riding House StreetLondonW1W 7EJUK
| | - Kathryn A. Welsby
- Central Laser FacilityHarwell Science and Innovation CampusChiltonDidcotOX11 0DEUK
| | - Ross J. Gordon
- Johnson Matthey Technology CentreSonning CommonReadingRG4 9NHUK
| | - Paul Collier
- Johnson Matthey Technology CentreSonning CommonReadingRG4 9NHUK
| | - Edward Z. Zhang
- Department of Medical Physics and Biomedical EngineeringUniversity College LondonLondonWC1E 6BTUK
| | - Paul C. Beard
- Department of Medical Physics and Biomedical EngineeringUniversity College LondonLondonWC1E 6BTUK
- Wellcome/ESPRC Centre for Surgical and Interventional SciencesUniversity College LondonCharles Bell House, 67–73 Riding House StreetLondonW1W 7EJUK
| | - Ivan P. Parkin
- Materials Chemistry CentreDepartment of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
| | - Adrien E. Desjardins
- Department of Medical Physics and Biomedical EngineeringUniversity College LondonLondonWC1E 6BTUK
- Wellcome/ESPRC Centre for Surgical and Interventional SciencesUniversity College LondonCharles Bell House, 67–73 Riding House StreetLondonW1W 7EJUK
| | - Sacha Noimark
- Department of Medical Physics and Biomedical EngineeringUniversity College LondonLondonWC1E 6BTUK
- Wellcome/ESPRC Centre for Surgical and Interventional SciencesUniversity College LondonCharles Bell House, 67–73 Riding House StreetLondonW1W 7EJUK
- Materials Chemistry CentreDepartment of ChemistryUniversity College London20 Gordon StreetLondonWC1H 0AJUK
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3
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He Z, Cheng J, Yan W, Long W, Ouyang H, Hu X, Liu M, Zhou N, Zhang X, Wei Y. One-step preparation of green tea ash derived and polymer functionalized carbon quantum dots via the thiol-ene click chemistry. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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4
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Kagan CR, Bassett LC, Murray CB, Thompson SM. Colloidal Quantum Dots as Platforms for Quantum Information Science. Chem Rev 2020; 121:3186-3233. [DOI: 10.1021/acs.chemrev.0c00831] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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5
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Carvalho SM, Mansur AA, Carvalho IC, Costa ÉA, Guedes MIM, Kroon EG, Lobato ZI, Mansur HS. Fluorescent quantum dots-zika virus hybrid nanoconjugates for biolabeling, bioimaging, and tracking host-cell interactions. MATERIALS LETTERS 2020; 277:128279. [PMID: 32834256 PMCID: PMC7351043 DOI: 10.1016/j.matlet.2020.128279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 06/29/2020] [Accepted: 07/04/2020] [Indexed: 06/03/2023]
Abstract
The earliest possible diagnosis and understanding of the infection mechanisms play a crucial role in the outcome of fighting viral diseases. Thus, we designed and developed for the first time, novel bioconjugates made of Ag-In-S@ZnS (ZAIS) fluorescent quantum dots coupled with ZIKA virus via covalent amide bond with carboxymethylcellulose (CMC) biopolymer for labeling and bioimaging the virus-host cell interactions mechanisms through confocal laser scanning microscopy. This work offers relevant insights regarding the profile of the ZIKA virus-nanoparticle conjugates interactions with VERO cells, which can be applied as a nanoplatform to elucidate the infection mechanisms caused by this viral disease.
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Affiliation(s)
- Sandhra M. Carvalho
- Center of Nanoscience, Nanotechnology, and Innovation-DEMET, Federal University of Minas Gerais – UFMG, Brazil
- LPVA, Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais – UFMG, Brazil
| | - Alexandra A.P. Mansur
- Center of Nanoscience, Nanotechnology, and Innovation-DEMET, Federal University of Minas Gerais – UFMG, Brazil
| | - Isadora C. Carvalho
- Center of Nanoscience, Nanotechnology, and Innovation-DEMET, Federal University of Minas Gerais – UFMG, Brazil
| | - Érica A. Costa
- LPVA, Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais – UFMG, Brazil
| | - Maria Isabel M.C. Guedes
- LPVA, Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais – UFMG, Brazil
| | - Erna G. Kroon
- Departamento de Microbiologia, Instituto de Ciências Biológicas – UFMG, Brazil
| | - Zelia I.P. Lobato
- LPVA, Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais – UFMG, Brazil
| | - Herman S. Mansur
- Center of Nanoscience, Nanotechnology, and Innovation-DEMET, Federal University of Minas Gerais – UFMG, Brazil
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6
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Santos CIL, S. Machado W, Wegner KD, Gontijo LAP, Bettini J, Schiavon MA, Reiss P, Aldakov D. Hydrothermal Synthesis of Aqueous-Soluble Copper Indium Sulfide Nanocrystals and Their Use in Quantum Dot Sensitized Solar Cells. NANOMATERIALS 2020; 10:nano10071252. [PMID: 32605163 PMCID: PMC7407332 DOI: 10.3390/nano10071252] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/17/2020] [Accepted: 06/22/2020] [Indexed: 12/24/2022]
Abstract
A facile hydrothermal method to synthesize water-soluble copper indium sulfide (CIS) nanocrystals (NCs) at 150 °C is presented. The obtained samples exhibited three distinct photoluminescence peaks in the red, green and blue spectral regions, corresponding to three size fractions, which could be separated by means of size-selective precipitation. While the red and green emitting fractions consist of 4.5 and 2.5 nm CIS NCs, the blue fraction was identified as in situ formed carbon nanodots showing excitation wavelength dependent emission. When used as light absorbers in quantum dot sensitized solar cells, the individual green and red fractions yielded power conversion efficiencies of 2.9% and 2.6%, respectively. With the unfractionated samples, the efficiency values approaching 5% were obtained. This improvement was mainly due to a significantly enhanced photocurrent arising from complementary panchromatic absorption.
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Affiliation(s)
- Calink I. L. Santos
- Grupo de Pesquisa em Química de Materiais (GPQM), Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio, 74, CEP 36301-160 São João del-Rei, MG, Brazil; (C.I.L.S.); (W.S.M.); (L.A.P.G.); (M.A.S.)
- Univ. Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, STEP, 38000 Grenoble, France; (K.D.W.); (P.R.)
| | - Wagner S. Machado
- Grupo de Pesquisa em Química de Materiais (GPQM), Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio, 74, CEP 36301-160 São João del-Rei, MG, Brazil; (C.I.L.S.); (W.S.M.); (L.A.P.G.); (M.A.S.)
- Univ. Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, STEP, 38000 Grenoble, France; (K.D.W.); (P.R.)
| | - Karl David Wegner
- Univ. Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, STEP, 38000 Grenoble, France; (K.D.W.); (P.R.)
| | - Leiriana A. P. Gontijo
- Grupo de Pesquisa em Química de Materiais (GPQM), Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio, 74, CEP 36301-160 São João del-Rei, MG, Brazil; (C.I.L.S.); (W.S.M.); (L.A.P.G.); (M.A.S.)
| | - Jefferson Bettini
- Laboratório Nacional de Nanotecnologia, Centro Nacional de Pesquisa em Energia e Materiais, CEP 13083-970 Campinas-SP, Brazil;
| | - Marco A. Schiavon
- Grupo de Pesquisa em Química de Materiais (GPQM), Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio, 74, CEP 36301-160 São João del-Rei, MG, Brazil; (C.I.L.S.); (W.S.M.); (L.A.P.G.); (M.A.S.)
| | - Peter Reiss
- Univ. Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, STEP, 38000 Grenoble, France; (K.D.W.); (P.R.)
| | - Dmitry Aldakov
- Univ. Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, STEP, 38000 Grenoble, France; (K.D.W.); (P.R.)
- Correspondence:
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7
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Mrad M, Ben Chaabane T, Rinnert H, Lavinia B, Jasniewski J, Medjahdi G, Schneider R. Aqueous Synthesis for Highly Emissive 3-Mercaptopropionic Acid-Capped AIZS Quantum Dots. Inorg Chem 2020; 59:6220-6231. [DOI: 10.1021/acs.inorgchem.0c00347] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Maroua Mrad
- Université de Carthage, Faculté des Sciences de Bizerte, LR 18 ES11 Laboratoire des composés hétéro-organiques et des matériaux nanostructurés, 7021 Jarzouna, Bizerte, Tunisia
- Université de Lorraine, CNRS, LRGP, F-54000 Nancy, France
| | - Tahar Ben Chaabane
- Université de Carthage, Faculté des Sciences de Bizerte, LR 18 ES11 Laboratoire des composés hétéro-organiques et des matériaux nanostructurés, 7021 Jarzouna, Bizerte, Tunisia
| | - Hervé Rinnert
- Université de Lorraine, CNRS, IJL, F-54000 Nancy, France
| | - Balan Lavinia
- CEMHTI-UPR 3079 CNRS, Site Haute Température, 1D avenue de la Recherche Scientifique, 45071 Orléans, France
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8
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Yang T, Segets D, Thajudeen T, Han Y, Peukert W. The effect of mixing on silver particle morphology in flow synthesis. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.07.043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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9
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Xia C, Wu W, Yu T, Xie X, van Oversteeg C, Gerritsen HC, de Mello Donega C. Size-Dependent Band-Gap and Molar Absorption Coefficients of Colloidal CuInS 2 Quantum Dots. ACS NANO 2018; 12:8350-8361. [PMID: 30085648 PMCID: PMC6117745 DOI: 10.1021/acsnano.8b03641] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The knowledge of the quantum dot (QD) concentration in a colloidal suspension and the quantitative understanding of the size-dependence of the band gap of QDs are of crucial importance from both applied and fundamental viewpoints. In this work, we investigate the size-dependence of the optical properties of nearly spherical wurtzite (wz) CuInS2 (CIS) QDs in the 2.7 to 6.1 nm diameter range (polydispersity ≤10%). The QDs are synthesized by partial Cu+ for In3+ cation exchange in template Cu2- xS nanocrystals, which yields CIS QDs with very small composition variations (In/Cu = 0.91 ± 0.11), regardless of their sizes. These well-defined QDs are used to investigate the size-dependence of the band gap of wz CIS QDs. A sizing curve is also constructed for chalcopyrite CIS QDs by collecting and reanalyzing literature data. We observe that both sizing curves follow primarily a 1/ d dependence. Moreover, the molar absorption coefficients and the absorption cross-section per CIS formula unit, both at 3.1 eV and at the band gap, are analyzed. The results demonstrate that the molar absorption coefficients of CIS QDs follow a power law at the first exciton transition energy (ε E1 = 5208 d2.45) and scale with the QD volume at 3.1 eV. This latter observation implies that the absorption cross-section per unit cell at 3.1 eV is size-independent and therefore can be estimated from bulk optical constants. These results also demonstrate that the molar absorption coefficients at 3.1 eV are more reliable for analytical purposes, since they are less sensitive to size and shape dispersion.
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Affiliation(s)
- Chenghui Xia
- Condensed
Matter and Interfaces, Debye Institute for
Nanomaterials Science, Utrecht University, 3508 TA Utrecht, The Netherlands
- Molecular
Biophysics, Debye Institute for Nanomaterials
Science, Utrecht University, 3508 TA Utrecht, The Netherlands
| | - Weiwei Wu
- Condensed
Matter and Interfaces, Debye Institute for
Nanomaterials Science, Utrecht University, 3508 TA Utrecht, The Netherlands
| | - Ting Yu
- Condensed
Matter and Interfaces, Debye Institute for
Nanomaterials Science, Utrecht University, 3508 TA Utrecht, The Netherlands
| | - Xiaobin Xie
- Soft
Condensed Matter, Debye Institute for Nanomaterials
Science, Utrecht University, 3508 TA Utrecht, The Netherlands
| | - Christina van Oversteeg
- Condensed
Matter and Interfaces, Debye Institute for
Nanomaterials Science, Utrecht University, 3508 TA Utrecht, The Netherlands
| | - Hans C. Gerritsen
- Molecular
Biophysics, Debye Institute for Nanomaterials
Science, Utrecht University, 3508 TA Utrecht, The Netherlands
| | - Celso de Mello Donega
- Condensed
Matter and Interfaces, Debye Institute for
Nanomaterials Science, Utrecht University, 3508 TA Utrecht, The Netherlands
- E-mail:
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10
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Interface Engineering Strategies for Fabricating Nanocrystal-Based Organic–Inorganic Nanocomposites. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8081376] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hybrid organic–inorganic nanocomposites have attracted considerable attention because they have the advantages of both conjugated polymers (CPs) and nanocrystals (NCs). Recent developments in the interfacial engineering of CP–NC organic–inorganic nanocomposites enabled the formation of an intimate contact between NCs and CPs, facilitating electronic interactions between these two constituents. To design CP–NC nanocomposites, several approaches have been introduced, including ligand refluxing, direct grafting methods, direct growth of NCs in proximity to CPs, and template-guided strategies. In this review, the general reactions of ligand exchange processes, purification methods, and characterization techniques have been briefly introduced. This is followed by a highlight of recent advances in the synthesis of hybrid CP–NC nanocomposites and newly developed inorganic surface treatments, as well as their applications. An outlook for future directions in this area is also presented.
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11
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Wang L, Sun YX, Zhang F, Li Y. Synthesis of CuInS2 quantum dots for synchronous fluorescent assay of glutathione in foods and biological fluids. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.12.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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12
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Shen Y, Gee MY, Greytak AB. Purification technologies for colloidal nanocrystals. Chem Commun (Camb) 2018; 53:827-841. [PMID: 27942615 DOI: 10.1039/c6cc07998a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Almost all applications of colloidal nanocrystals require some type of purification or surface modification process following nanocrystal growth. Nanocrystal purification - the separation of nanocrystals from undesired solution components - can perturb the surface chemistry and thereby the physical properties of colloidal nanocrystals due to changes in solvent, solute concentrations, and exposure of the nanocrystal surface to oxidation or hydrolysis. For example, nanocrystal quantum dots frequently exhibit decreased photoluminescence brightness after precipitation from the growth solvent and subsequent redissolution. Consequently, purification is an integral part of the synthetic chemistry of colloidal nanocrystals, and the effect of purification methods must be considered in order to accurately compare and predict the behavior of otherwise similar nanocrystal samples. In this Feature Article we examine established and emerging approaches to the purification of colloidal nanoparticles from a nanocrystal surface chemistry viewpoint. Purification is generally achieved by exploiting differences in properties between the impurities and the nanoparticles. Three distinct properties are typically manipulated: polarity (relative solubility), electrophoretic mobility, and size. We discuss precipitation, extraction, electrophoretic methods, and size-based methods including ultracentrifugation, ultrafiltration, diafiltration, and size-exclusion chromatography. The susceptibility of quantum dots to changes in surface chemistry, with changes in photoluminescence decay associated with surface chemical changes, extends even into the case of core/shell structures. Accordingly, the goal of a more complete description of quantum dot surface chemistry has been a driver of innovation in colloidal nanocrystal purification methods. We specifically examine the effect of purification on surface chemistry and photoluminescence in quantum dots as an example of the challenges associated with nanocrystal purification and how improved understanding can result from increasingly precise techniques, and associated surface-sensitive analytical methods.
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Affiliation(s)
- Yi Shen
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA.
| | - Megan Y Gee
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA.
| | - A B Greytak
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA. and USC Nanocenter, University of South Carolina, Columbia, SC 29208, USA
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13
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Walter J, Gorbet G, Akdas T, Segets D, Demeler B, Peukert W. 2D analysis of polydisperse core-shell nanoparticles using analytical ultracentrifugation. Analyst 2018; 142:206-217. [PMID: 27934989 DOI: 10.1039/c6an02236g] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Accurate knowledge of the size, density and composition of nanoparticles (NPs) is of major importance for their applications. In this work the hydrodynamic characterization of polydisperse core-shell NPs by means of analytical ultracentrifugation (AUC) is addressed. AUC is one of the most accurate techniques for the characterization of NPs in the liquid phase because it can resolve particle size distributions (PSDs) with unrivaled resolution and detail. Small NPs have to be considered as core-shell systems when dispersed in a liquid since a solvation layer and a stabilizer shell will significantly contribute to the particle's hydrodynamic diameter and effective density. AUC measures the sedimentation and diffusion transport of the analytes, which are affected by the core-shell compositional properties. This work demonstrates that polydisperse and thus widely distributed NPs pose significant challenges for current state-of-the-art data evaluation methods. The existing methods either have insufficient resolution or do not correctly reproduce the core-shell properties. First, we investigate the performance of different data evaluation models by means of simulated data. Then, we propose a new methodology to address the core-shell properties of NPs. This method is based on the parametrically constrained spectrum analysis and offers complete access to the size and effective density of polydisperse NPs. Our study is complemented using experimental data derived for ZnO and CuInS2 NPs, which do not have a monodisperse PSD. For the first time, the size and effective density of such structures could be resolved with high resolution by means of a two-dimensional AUC analysis approach.
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Affiliation(s)
- Johannes Walter
- Institute of Particle Technology (LFG), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstr. 4, 91058 Erlangen, Germany. and Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstr. 9a, 91058 Erlangen, Germany
| | - Gary Gorbet
- Department of Biochemistry, The University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, Texas 78229-3901, USA.
| | - Tugce Akdas
- Institute of Particle Technology (LFG), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstr. 4, 91058 Erlangen, Germany. and Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstr. 9a, 91058 Erlangen, Germany
| | - Doris Segets
- Institute of Particle Technology (LFG), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstr. 4, 91058 Erlangen, Germany. and Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstr. 9a, 91058 Erlangen, Germany
| | - Borries Demeler
- Department of Biochemistry, The University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, Texas 78229-3901, USA.
| | - Wolfgang Peukert
- Institute of Particle Technology (LFG), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstr. 4, 91058 Erlangen, Germany. and Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstr. 9a, 91058 Erlangen, Germany
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Nanoparticles of Ag-In-S and Cu-In-S in Aqueous Media: Preparation, Spectral and Luminescent Properties. THEOR EXP CHEM+ 2017. [DOI: 10.1007/s11237-017-9533-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Akdas T, Haderlein M, Walter J, Apeleo Zubiri B, Spiecker E, Peukert W. Continuous synthesis of CuInS2 quantum dots. RSC Adv 2017. [DOI: 10.1039/c6ra27052b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The impact of reactor type on synthesis parameters and disperse properties.
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Affiliation(s)
- T. Akdas
- Institute of Particle Technology (LFG)
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
- Cluster of Excellence – Engineering of Advanced Materials (EAM)
| | - M. Haderlein
- Institute of Particle Technology (LFG)
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
- Cluster of Excellence – Engineering of Advanced Materials (EAM)
| | - J. Walter
- Institute of Particle Technology (LFG)
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
- Cluster of Excellence – Engineering of Advanced Materials (EAM)
| | - B. Apeleo Zubiri
- Center for Nanoanalysis and Electron Microscopy (CENEM)
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
- Cluster of Excellence – Engineering of Advanced Materials (EAM)
| | - E. Spiecker
- Center for Nanoanalysis and Electron Microscopy (CENEM)
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
- Cluster of Excellence – Engineering of Advanced Materials (EAM)
| | - W. Peukert
- Institute of Particle Technology (LFG)
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
- Cluster of Excellence – Engineering of Advanced Materials (EAM)
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16
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Karabudak E, Brookes E, Lesnyak V, Gaponik N, Eychmüller A, Walter J, Segets D, Peukert W, Wohlleben W, Demeler B, Cölfen H. Simultaneous Identification of Spectral Properties and Sizes of Multiple Particles in Solution with Subnanometer Resolution. Angew Chem Int Ed Engl 2016; 55:11770-4. [PMID: 27461742 PMCID: PMC5148131 DOI: 10.1002/anie.201603844] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Indexed: 11/11/2022]
Abstract
We report an unsurpassed solution characterization technique based on analytical ultracentrifugation, which demonstrates exceptional potential for resolving particle sizes in solution with sub-nm resolution. We achieve this improvement in resolution by simultaneously measuring UV/Vis spectra while hydrodynamically separating individual components in the mixture. By equipping an analytical ultracentrifuge with a novel multi-wavelength detector, we are adding a new spectral discovery dimension to traditional hydrodynamic characterization, and amplify the information obtained by orders of magnitude. We demonstrate the power of this technique by characterizing unpurified CdTe nanoparticle samples, avoiding tedious and often impossible purification and fractionation of nanoparticles into apparently monodisperse fractions. With this approach, we have for the first time identified the pure spectral properties and band-gap positions of discrete species present in the CdTe mixture.
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Affiliation(s)
- Engin Karabudak
- Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Kolloidchemie, Forschungscampus Golm, Am Mühlenberg, 14424, Potsdam, Germany
- Izmir Institute of Technology, Chemistry Department, 35430, Izmir, Turkey
| | - Emre Brookes
- University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX, 78229-3901, USA
| | - Vladimir Lesnyak
- Physikalische Chemie, TU Dresden, Bergstrasse 66b, 01062, Dresden, Germany
| | - Nikolai Gaponik
- Physikalische Chemie, TU Dresden, Bergstrasse 66b, 01062, Dresden, Germany
| | | | - Johannes Walter
- Institute of Particle Technology (LFG), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Cauerstrasse 4, 91058, Erlangen, Germany
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstrasse 9a, 91058, Erlangen, Germany
| | - Doris Segets
- Institute of Particle Technology (LFG), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Cauerstrasse 4, 91058, Erlangen, Germany
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstrasse 9a, 91058, Erlangen, Germany
| | - Wolfgang Peukert
- Institute of Particle Technology (LFG), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Cauerstrasse 4, 91058, Erlangen, Germany
- Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstrasse 9a, 91058, Erlangen, Germany
| | | | - Borries Demeler
- University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX, 78229-3901, USA.
| | - Helmut Cölfen
- Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Kolloidchemie, Forschungscampus Golm, Am Mühlenberg, 14424, Potsdam, Germany.
- Universität Konstanz, Physikalische Chemie, Universitätsstrasse 10, 78457, Konstanz, Germany.
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17
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Karabudak E, Brookes E, Lesnyak V, Gaponik N, Eychmüller A, Walter J, Segets D, Peukert W, Wohlleben W, Demeler B, Cölfen H. Simultane Bestimmung spektraler Eigenschaften und Größen von multiplen Partikeln in Lösung mit Subnanometer‐Auflösung. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Engin Karabudak
- Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Kolloidchemie, Forschungscampus Golm Am Mühlenberg 14424 Potsdam Deutschland
- Izmir Institute of Technology, Chemistry Department 35430 Izmir Türkei
| | - Emre Brookes
- University of Texas Health Science Center at San Antonio 7703 Floyd Curl Drive San Antonio TX 78229-3901 USA
| | - Vladimir Lesnyak
- Physikalische Chemie, TU Dresden Bergstraße 66b 01062 Dresden Deutschland
| | - Nikolai Gaponik
- Physikalische Chemie, TU Dresden Bergstraße 66b 01062 Dresden Deutschland
| | | | - Johannes Walter
- Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik (LFG) Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Cauerstraße 4 91058 Erlangen Deutschland
- Interdisziplinäres Zentrum für Funktionale Partikelsysteme (FPS) Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Haberstr. 9a 91058 Erlangen Deutschland
| | - Doris Segets
- Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik (LFG) Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Cauerstraße 4 91058 Erlangen Deutschland
- Interdisziplinäres Zentrum für Funktionale Partikelsysteme (FPS) Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Haberstr. 9a 91058 Erlangen Deutschland
| | - Wolfgang Peukert
- Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik (LFG) Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Cauerstraße 4 91058 Erlangen Deutschland
- Interdisziplinäres Zentrum für Funktionale Partikelsysteme (FPS) Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Haberstr. 9a 91058 Erlangen Deutschland
| | | | - Borries Demeler
- University of Texas Health Science Center at San Antonio 7703 Floyd Curl Drive San Antonio TX 78229-3901 USA
| | - Helmut Cölfen
- Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Kolloidchemie, Forschungscampus Golm Am Mühlenberg 14424 Potsdam Deutschland
- Universität Konstanz, Physikalische Chemie Universitätsstraße 10 78457 Konstanz Deutschland
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18
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Feng Y, Liu L, Hu S, Liu Y, Ren Y, Zhang X. Förster resonance energy transfer properties of a new type of near-infrared excitation PDT photosensitizer: CuInS2/ZnS quantum dots-5-aminolevulinic acid conjugates. RSC Adv 2016. [DOI: 10.1039/c6ra06937a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Recently, near-infrared (NIR) excitation has been suggested for PDT improvement and therapy of cancer.
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Affiliation(s)
- Yueshu Feng
- School of Science
- Changchun University of Science and Technology
- International Joint Research Center for Nanophotonics and Biophotonics
- Changchun 130000
- China
| | - Liwei Liu
- School of Science
- Changchun University of Science and Technology
- International Joint Research Center for Nanophotonics and Biophotonics
- Changchun 130000
- China
| | - Siyi Hu
- School of Science
- Changchun University of Science and Technology
- International Joint Research Center for Nanophotonics and Biophotonics
- Changchun 130000
- China
| | - Yingyi Liu
- School of Science
- Changchun University of Science and Technology
- International Joint Research Center for Nanophotonics and Biophotonics
- Changchun 130000
- China
| | - Yu Ren
- School of Science
- Changchun University of Science and Technology
- International Joint Research Center for Nanophotonics and Biophotonics
- Changchun 130000
- China
| | - Xihe Zhang
- School of Science
- Changchun University of Science and Technology
- International Joint Research Center for Nanophotonics and Biophotonics
- Changchun 130000
- China
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19
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Peukert W, Segets D, Pflug L, Leugering G. Unified Design Strategies for Particulate Products. MESOSCALE MODELING IN CHEMICAL ENGINEERING PART I 2015. [DOI: 10.1016/bs.ache.2015.10.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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