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Yu W, Sun W, Zhang Y, Shen C, Cao X, Song P, Zhu X, Liu M, Yang Y. Plasmon-enhanced fluorescence for ellagic acid detection based on surface structure of gold nanoparticles. Anal Bioanal Chem 2023; 415:4901-4909. [PMID: 37341782 DOI: 10.1007/s00216-023-04792-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/22/2023]
Abstract
Ellagic acid (EA), as a natural polyphenolic acid, is considered a naturally occurring inhibitor of carcinogenesis. Herein, we developed a plasmon-enhanced fluorescence (PEF) probe for EA detection based on silica-coated gold nanoparticles (Au NPs). A silica shell was designed to control the distance between silica quantum dots (Si QDs) and Au NPs. The experimental results indicated that an 8.8-fold fluorescence enhancement was obtained compared with the original Si QDs. Three-dimensional finite-difference time-domain (3D-FDTD) simulations further demonstrated that the local electric field enhancement around Au NPs led to the fluorescence enhancement. In addition, the fluorescent sensor was applied for the sensitive detection of EA with a detection limit of 0.14 μM. It can be used to detect EA in pomegranate rind with a recovery rate of 100.26-107.93%. It can also be applied to the analysis of other substances by changing the identification substances. These experimental results indicated that the probe provides a good option for clinical analysis and food safety.
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Affiliation(s)
- Weidao Yu
- College of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, People's Republic of China
| | - Wen Sun
- College of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, People's Republic of China
| | - Yukai Zhang
- College of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, People's Republic of China
| | - Caihong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou, 646000, People's Republic of China
- Luzhou Laojiao Co. Ltd, Luzhou, 646000, People's Republic of China
| | - Xiaonian Cao
- National Engineering Research Center of Solid-State Brewing, Luzhou, 646000, People's Republic of China
- Luzhou Laojiao Co. Ltd, Luzhou, 646000, People's Republic of China
| | - Ping Song
- College of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, People's Republic of China
| | - Xiaofeng Zhu
- College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Miao Liu
- National Engineering Research Center of Solid-State Brewing, Luzhou, 646000, People's Republic of China.
- Luzhou Laojiao Co. Ltd, Luzhou, 646000, People's Republic of China.
| | - Yaqiong Yang
- College of Food and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, 210023, People's Republic of China.
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2
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Zhang LX, Qi MY, Tang ZR, Xu YJ. Heterostructure-Engineered Semiconductor Quantum Dots toward Photocatalyzed-Redox Cooperative Coupling Reaction. RESEARCH (WASHINGTON, D.C.) 2023; 6:0073. [PMID: 36930756 PMCID: PMC10013965 DOI: 10.34133/research.0073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 01/17/2023] [Indexed: 01/27/2023]
Abstract
Semiconductor quantum dots have been emerging as one of the most ideal materials for artificial photosynthesis. Here, we report the assembled ZnS-CdS hybrid heterostructure for efficient coupling cooperative redox catalysis toward the oxidation of 1-phenylethanol to acetophenone/2,3-diphenyl-2,3-butanediol (pinacol) integrated with the reduction of protons to H2. The strong interaction and typical type-I band-position alignment between CdS quantum dots and ZnS quantum dots result in efficient separation and transfer of electron-hole pairs, thus distinctly enhancing the coupled photocatalyzed-redox activity and stability. The optimal ZnS-CdS hybrid also delivers a superior performance for various aromatic alcohol coupling photoredox reaction, and the ratio of electrons and holes consumed in such redox reaction is close to 1.0, indicating a high atom economy of cooperative coupling catalysis. In addition, by recycling the scattered light in the near field of a SiO2 sphere, the SiO2-supported ZnS-CdS (denoted as ZnS-CdS/SiO2) catalyst can further achieve a 3.5-fold higher yield than ZnS-CdS hybrid. Mechanistic research clarifies that the oxidation of 1-phenylethanol proceeds through the pivotal radical intermediates of •C(CH3)(OH)Ph. This work is expected to promote the rational design of semiconductor quantum dots-based heterostructured catalysts for coupling photoredox catalysis in organic synthesis and clean fuels production.
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Affiliation(s)
- Lin-Xing Zhang
- College of Chemistry, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, P.R. China
| | - Ming-Yu Qi
- College of Chemistry, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, P.R. China
| | - Zi-Rong Tang
- College of Chemistry, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, P.R. China
| | - Yi-Jun Xu
- College of Chemistry, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, P.R. China
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Estrada AC, Daniel-da-Silva AL, Leal C, Monteiro C, Lopes CB, Nogueira HIS, Lopes I, Martins MJ, Martins NCT, Gonçalves NPF, Fateixa S, Trindade T. Colloidal nanomaterials for water quality improvement and monitoring. Front Chem 2022; 10:1011186. [PMID: 36238095 PMCID: PMC9551176 DOI: 10.3389/fchem.2022.1011186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 09/06/2022] [Indexed: 12/14/2022] Open
Abstract
Water is the most important resource for all kind forms of live. It is a vital resource distributed unequally across different regions of the globe, with populations already living with water scarcity, a situation that is spreading due to the impact of climate change. The reversal of this tendency and the mitigation of its disastrous consequences is a global challenge posed to Humanity, with the scientific community assuming a major obligation for providing solutions based on scientific knowledge. This article reviews literature concerning the development of nanomaterials for water purification technologies, including collaborative scientific research carried out in our laboratory (nanoLAB@UA) framed by the general activities carried out at the CICECO-Aveiro Institute of Materials. Our research carried out in this specific context has been mainly focused on the synthesis and surface chemical modification of nanomaterials, typically of a colloidal nature, as well as on the evaluation of the relevant properties that arise from the envisaged applications of the materials. As such, the research reviewed here has been guided along three thematic lines: 1) magnetic nanosorbents for water treatment technologies, namely by using biocomposites and graphite-like nanoplatelets; 2) nanocomposites for photocatalysis (e.g., TiO2/Fe3O4 and POM supported graphene oxide photocatalysts; photoactive membranes) and 3) nanostructured substrates for contaminant detection using surface enhanced Raman scattering (SERS), namely polymers loaded with Ag/Au colloids and magneto-plasmonic nanostructures. This research is motivated by the firm believe that these nanomaterials have potential for contributing to the solution of environmental problems and, conversely, will not be part of the problem. Therefore, assessment of the impact of nanoengineered materials on eco-systems is important and research in this area has also been developed by collaborative projects involving experts in nanotoxicity. The above topics are reviewed here by presenting a brief conceptual framework together with illustrative case studies, in some cases with original research results, mainly focusing on the chemistry of the nanomaterials investigated for target applications. Finally, near-future developments in this research area are put in perspective, forecasting realistic solutions for the application of colloidal nanoparticles in water cleaning technologies.
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Affiliation(s)
- Ana C. Estrada
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Ana L. Daniel-da-Silva
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Cátia Leal
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Cátia Monteiro
- Department of Biology and CESAM-Centre of Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal
| | - Cláudia B. Lopes
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Helena I. S. Nogueira
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Isabel Lopes
- Department of Biology and CESAM-Centre of Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal
| | - Maria J. Martins
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Natércia C. T. Martins
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Nuno P. F. Gonçalves
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Sara Fateixa
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Tito Trindade
- Department of Chemistry and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
- *Correspondence: Tito Trindade,
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4
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Guari Y, Cahu M, Félix G, Sene S, Long J, Chopineau J, Devoisselle JM, Larionova J. Nanoheterostructures based on nanosized Prussian blue and its Analogues: Design, properties and applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214497] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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5
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Cui J, Koley S, Panfil YE, Levi A, Waiskopf N, Remennik S, Oded M, Banin U. Semiconductor Bow‐Tie Nanoantenna from Coupled Colloidal Quantum Dot Molecules. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jiabin Cui
- Institute of Chemistry The Hebrew University of Jerusalem Jerusalem 91904 Israel
- The Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Somnath Koley
- Institute of Chemistry The Hebrew University of Jerusalem Jerusalem 91904 Israel
- The Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Yossef E. Panfil
- Institute of Chemistry The Hebrew University of Jerusalem Jerusalem 91904 Israel
- The Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Adar Levi
- Institute of Chemistry The Hebrew University of Jerusalem Jerusalem 91904 Israel
- The Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Nir Waiskopf
- Institute of Chemistry The Hebrew University of Jerusalem Jerusalem 91904 Israel
- The Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Sergei Remennik
- The Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Meirav Oded
- Institute of Chemistry The Hebrew University of Jerusalem Jerusalem 91904 Israel
- The Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - Uri Banin
- Institute of Chemistry The Hebrew University of Jerusalem Jerusalem 91904 Israel
- The Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 Israel
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6
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Cui J, Koley S, Panfil YE, Levi A, Waiskopf N, Remennik S, Oded M, Banin U. Semiconductor Bow-Tie Nanoantenna from Coupled Colloidal Quantum Dot Molecules. Angew Chem Int Ed Engl 2021; 60:14467-14472. [PMID: 33793047 DOI: 10.1002/anie.202101155] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/09/2021] [Indexed: 11/06/2022]
Abstract
Top-down fabricated nanoantenna architectures of both metallic and dielectric materials show powerful functionalities for Raman and fluorescence enhancement with relevance to single molecule sensing while inducing directionality of chromophore emission with implications for single photon sources. We synthesize the smallest bow-tie nanoantenna by selective tip-to-tip fusion of two tetrahedral colloidal quantum dots (CQDs) forming a dimer. While the tetrahedral monomers emit non-polarized light, the bow-tie architecture manifests nanoantenna functionality of enhanced emission polarization along the bow-tie axis, as predicted theoretically and revealed by single-particle spectroscopy. Theory also predicts the formation of an electric-field hotspot at the bow-tie epicenter. This is utilized for selective light-induced photocatalytic metal growth at that location, unlike growth on the free tips in dark conditions, thus demonstrating bow-tie dimer functionality as a photochemical reaction center.
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Affiliation(s)
- Jiabin Cui
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.,The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Somnath Koley
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.,The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Yossef E Panfil
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.,The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Adar Levi
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.,The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Nir Waiskopf
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.,The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Sergei Remennik
- The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Meirav Oded
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.,The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Uri Banin
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel.,The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
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7
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Abstract
![]()
Electronic
coupling and hence hybridization of atoms serves as
the basis for the rich properties for the endless library of naturally
occurring molecules. Colloidal quantum dots (CQDs) manifesting quantum
strong confinement possess atomic-like characteristics with s and p electronic levels, which popularized
the notion of CQDs as artificial atoms. Continuing this analogy, when
two atoms are close enough to form a molecule so that their orbitals
start overlapping, the orbitals energies start to split into bonding
and antibonding states made out of hybridized orbitals. The same concept
is also applicable for two fused core–shell nanocrystals in
close proximity. Their band edge states, which dictate the emitted
photon energy, start to hybridize, changing their electronic and optical
properties. Thus, an exciting direction of “artificial molecules”
emerges, leading to a multitude of possibilities for creating a library
of new hybrid nanostructures with novel optoelectronic properties
with relevance toward diverse applications including quantum technologies. The controlled separation and the barrier height between two adjacent
quantum dots are key variables for dictating the magnitude of the
coupling energy of the confined wave functions. In the past, coupled
double quantum dot architectures prepared by molecular beam epitaxy
revealed a coupling energy of few millielectron volts, which limits
the applications to mostly cryogenic operation. The realization of
artificial quantum molecules with sufficient coupling energy detectable
at room temperature calls for the use of colloidal semiconductor nanocrystal
building blocks. Moreover, the tunable surface chemistry widely opens
the predesigned attachment strategies as well as the solution processing
ability of the prepared artificial molecules, making the colloidal
nanocrystals as an ideal candidate for this purpose. Despite several
approaches that demonstrated enabling of the coupled structures, a
general and reproducible method applicable to a broad range of colloidal
quantum materials is needed for systematic tailoring of the coupling
strength based on a dictated barrier This Account addresses
the development of nanocrystal chemistry to create
coupled colloidal quantum dot molecules and to study the
controlled electronic coupling and their emergent properties. The
simplest nanocrystal molecule, a homodimer formed from two core/shell
nanocrystal monomers, in analogy to homonuclear diatomic molecules,
serves as a model system. The shell material of the two CQDs is structurally
fused, resulting in a continuous crystal. This lowers the potential
energy barrier, enabling the hybridization of the electronic wave
functions. The direct manifestation of the hybridization reflects
on the band edge transition shifting toward lower energy and is clearly
resolved at room temperature. The hybridization energy within the
single homodimer molecule is strongly correlated with the extent of
structural continuity, the delocalization of the exciton wave function,
and the barrier thickness as calculated numerically. The hybridization
impacts the emitted photon statistics manifesting faster radiative
decay rate, photon bunching effect, and modified Auger recombination
pathway compared to the monomer artificial atoms. Future perspectives
for the nanocrystals chemistry paradigm are also highlighted.
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Affiliation(s)
- Somnath Koley
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
- The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Jiabin Cui
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
- The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Yossef E. Panfil
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
- The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Uri Banin
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
- The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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8
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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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Zhang C, Chen J, Wang S, Kong L, Lewis SW, Yang X, Rogach AL, Jia G. Metal Halide Perovskite Nanorods: Shape Matters. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002736. [PMID: 32985008 DOI: 10.1002/adma.202002736] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/05/2020] [Indexed: 05/22/2023]
Abstract
Quasi-1D metal halide perovskite nanorods (NRs) are emerging as a type of materials with remarkable optical and electronic properties. Research into this field is rapidly expanding and growing in the past several years, with significant advances in both mechanistic studies of their growth and widespread possible applications. Here, the recent advances in 1D metal halide perovskite nanocrystals (NCs) are reviewed, with a particular emphasis on NRs. At first, the crystal structures of perovskites are elaborated, which is followed by a review of the major synthetic approaches toward perovskite NRs, such as wet-chemical synthesis, substrate-assisted growth, and anion exchange reactions, and discussion of the growth mechanisms associated with each synthetic method. Then, thermal and aqueous stability and the linear polarized luminescence of perovskite NRs are considered, followed by highlighting their applications in solar cells, light-emitting diodes, photodetectors/phototransistors, and lasers. Finally, challenges and future opportunities in this rapidly developing research area are summarized.
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Affiliation(s)
- Chengxi Zhang
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, P. R. China
| | - Jiayi Chen
- Curtin Institute of Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia
| | - Sheng Wang
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, P. R. China
| | - Lingmei Kong
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, P. R. China
| | - Simon W Lewis
- Curtin Institute of Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia
| | - Xuyong Yang
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, P. R. China
| | - Andrey L Rogach
- Department of Materials Science and Engineering & Centre for Functional Photonics (CFP) City University of Hong Kong, Kowloon, Hong Kong SAR, P. R. China
| | - Guohua Jia
- Curtin Institute of Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia
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10
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Rathore E, Maji K, Rao D, Saha B, Biswas K. Charge Transfer in the Heterostructure of CsPbBr 3 Nanocrystals with Nitrogen-Doped Carbon Dots. J Phys Chem Lett 2020; 11:8002-8007. [PMID: 32871070 DOI: 10.1021/acs.jpclett.0c02139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Heterostructures of inorganic halide perovskites with mixed-dimensional inorganic nanomaterials have shown great potential not only in the field of optoelectronic energy devices and photocatalysis but also for improving our fundamental understanding of the charge transfer across the heterostructure interface. Herein, we present for the first time the heterostructure integration of the CsPbBr3 nanocrystal with an N-doped carbon dot. We explore the photoluminescence (PL) and photoconductivity of the heterostructure of CsPbBr3 nanocrystals and N-doped carbon dots. PL quenching of CsPbBr3 nanocrystals with the addition of N-doped carbon dots was observed. The photoexcited electrons from the conduction band of CsPbBr3 are trapped in the N-acceptor state of N-doped carbon dots, and the charge transfer occurs via quasi type II-like electronic band alignment. The charge transfer in the halide perovskite-based heterostructure should motivate further research into the new heterostructure synthesis with perovskites and the fundamental understanding of the mechanism of charge/energy transfer across the heterostructure interface.
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11
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Steimle BC, Lord RW, Schaak RE. Phosphine-Induced Phase Transition in Copper Sulfide Nanoparticles Prior to Initiation of a Cation Exchange Reaction. J Am Chem Soc 2020; 142:13345-13349. [PMID: 32700901 DOI: 10.1021/jacs.0c06602] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Cation exchange reactions of colloidal copper sulfide nanoparticles are widely used to produce derivative nanoparticles having unique compositions, metastable crystal structures, and complex heterostructures. The copper sulfide crystal structure plays a key role in the mechanism by which cation exchange occurs and the product that forms. Here, we show that digenite copper sulfide nanoparticles undergo a spontaneous phase transition to tetragonal chalcocite in situ, prior to the onset of cation exchange. Room-temperature sonication of digenite (Cu1.8S) in trioctylphosphine, a Lewis base that drives cation exchange, extracts sulfur to produce tetragonal chalcocite (Cu2S). The subtle structural differences between digenite and tetragonal chalcocite are believed to influence the accessibility of cation diffusion channels and concomitantly the mechanism of cation exchange. Structural relationships in nanocrystal cation exchange are therefore dynamic, and intermediates generated in situ must be considered.
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12
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Movilla JL, Planelles J, Climente JI. Dielectric Confinement Enables Molecular Coupling in Stacked Colloidal Nanoplatelets. J Phys Chem Lett 2020; 11:3294-3300. [PMID: 32272016 DOI: 10.1021/acs.jpclett.0c00855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We show theoretically that carriers confined in semiconductor colloidal nanoplatelets (NPLs) sense the presence of neighbor, cofacially stacked NPLs in their energy spectrum. When approaching identical NPLs, the otherwise degenerate energy levels red-shift and split, forming (for large stacks) minibands that are several millielectronvolts in width. Unlike in epitaxial structures, the molecular behavior does not result from quantum tunneling but from changes in the dielectric confinement. The associated excitonic absorption spectrum shows a rich structure of bright and dark states, whose optical activity and multiplicity can be understood from reflection symmetry and Coulomb tunneling. We predict spectroscopic signatures that should confirm the formation of molecular states, whose practical realization would pave the way for the development of nanocrystal chemistry based on NPLs.
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Affiliation(s)
- José L Movilla
- Departament d'Educació i Didàctiques Específiques, Universitat Jaume I, 12080 Castelló, Spain
| | - Josep Planelles
- Departament de Química Física i Analítica, Universitat Jaume I, E-12080 Castelló de la Plana, Spain
| | - Juan I Climente
- Departament de Química Física i Analítica, Universitat Jaume I, E-12080 Castelló de la Plana, Spain
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13
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Gheshlaghi N, Faraji M, Sedaghat Pisheh H. Interfacial strain and shell thickness effect on core squeeze/stretch in core/shell quantum dots. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2540-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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14
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Volokh M, Mokari T. Metal/semiconductor interfaces in nanoscale objects: synthesis, emerging properties and applications of hybrid nanostructures. NANOSCALE ADVANCES 2020; 2:930-961. [PMID: 36133041 PMCID: PMC9418511 DOI: 10.1039/c9na00729f] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/04/2020] [Indexed: 05/11/2023]
Abstract
Hybrid nanostructures, composed of multi-component crystals of various shapes, sizes and compositions are much sought-after functional materials. Pairing the ability to tune each material separately and controllably combine two (or more) domains with defined spatial orientation results in new properties. In this review, we discuss the various synthetic mechanisms for the formation of hybrid nanostructures of various complexities containing at least one metal/semiconductor interface, with a focus on colloidal chemistry. Different synthetic approaches, alongside the underlying kinetic and thermodynamic principles are discussed, and future advancement prospects are evaluated. Furthermore, the proved unique properties are reviewed with emphasis on the connection between the synthetic method and the resulting physical, chemical and optical properties with applications in fields such as photocatalysis.
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Affiliation(s)
- Michael Volokh
- Department of Chemistry, Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev Beer-Sheva 8410501 Israel
| | - Taleb Mokari
- Department of Chemistry, Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev Beer-Sheva 8410501 Israel
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15
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Steimle BC, Fenton JL, Schaak RE. Rational construction of a scalable heterostructured nanorod megalibrary. Science 2020; 367:418-424. [DOI: 10.1126/science.aaz1172] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 12/06/2019] [Indexed: 12/17/2022]
Abstract
Integrating multiple materials in arbitrary arrangements within nanoparticles is a prerequisite for advancing many applications. Strategies to synthesize heterostructured nanoparticles are emerging, but they are limited in complexity, scope, and scalability. We introduce two design guidelines, based on interfacial reactivity and crystal structure relations, that enable the rational synthesis of a heterostructured nanorod megalibrary. We define synthetically feasible pathways to 65,520 distinct multicomponent metal sulfide nanorods having as many as 6 materials, 8 segments, and 11 internal interfaces by applying up to seven sequential cation-exchange reactions to copper sulfide nanorod precursors. We experimentally observe 113 individual heterostructured nanorods and demonstrate the scalable production of three samples. Previously unimaginable complexity in heterostructured nanorods is now routinely achievable with simple benchtop chemistry and standard laboratory glassware.
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Affiliation(s)
- Benjamin C. Steimle
- Department of Chemistry, The Pennsylvania State University, University Park, PA 16802, USA
| | - Julie L. Fenton
- Department of Chemistry, The Pennsylvania State University, University Park, PA 16802, USA
| | - Raymond E. Schaak
- Department of Chemistry, The Pennsylvania State University, University Park, PA 16802, USA
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
- Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA
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16
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Panfil YE, Shamalia D, Cui J, Koley S, Banin U. Electronic coupling in colloidal quantum dot molecules; the case of CdSe/CdS core/shell homodimers. J Chem Phys 2019; 151:224501. [DOI: 10.1063/1.5128086] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Yossef E. Panfil
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Doaa Shamalia
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Jiabin Cui
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Somnath Koley
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Uri Banin
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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17
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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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18
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Milleville CC, Chen EY, Lennon KR, Cleveland JM, Kumar A, Zhang J, Bork JA, Tessier A, LeBeau JM, Chase DB, Zide JMO, Doty MF. Engineering Efficient Photon Upconversion in Semiconductor Heterostructures. ACS NANO 2019; 13:489-497. [PMID: 30576110 DOI: 10.1021/acsnano.8b07062] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Photon upconversion is a photophysical process in which two low-energy photons are converted into one high-energy photon. Photon upconversion has broad appeal for a range of applications from biomedical imaging and targeted drug release to solar energy harvesting. Current upconversion nanosystems, including lanthanide-doped nanocrystals and triplet-triplet annihilation molecules, have achieved upconversion quantum yields on the order of 10-30%. However, the performance of these materials is hampered by inherently narrow absorption cross sections and fixed energy levels originating in atomic, ionic, or molecular states. Semiconductors, on the other hand, have inherently wide absorption cross sections. Moreover, recent advances enable the synthesis of colloidal semiconductor nanoparticles with complex heterostructures that can control band alignments and tune optical properties. We synthesize and characterize a three-component heterostructure that successfully upconverts photons under continuous-wave illumination and solar-relevant photon fluxes. The heterostructure is composed of two cadmium selenide quantum dots (QDs), an absorber and emitter, spatially separated by a cadmium sulfide nanorod (NR). We demonstrate that the principles of semiconductor heterostructure engineering can be applied to engineer improved upconversion efficiency. We first eliminate electron trap states near the surface of the absorbing QD and then tailor the band gap of the NR such that charge carriers are funneled to the emitting QD. When combined, these two changes result in a 100-fold improvement in photon upconversion performance.
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Affiliation(s)
| | | | | | | | - Abinash Kumar
- Department of Materials Science and Engineering , North Carolina State University , Raleigh , North Carolina 27606 , United States
| | | | | | - Ansel Tessier
- The Tatnall School , Wilmington , Delaware 19807 , United States
| | - James M LeBeau
- Department of Materials Science and Engineering , North Carolina State University , Raleigh , North Carolina 27606 , United States
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19
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Wintzheimer S, Granath T, Oppmann M, Kister T, Thai T, Kraus T, Vogel N, Mandel K. Supraparticles: Functionality from Uniform Structural Motifs. ACS NANO 2018; 12:5093-5120. [PMID: 29763295 DOI: 10.1021/acsnano.8b00873] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Under the right process conditions, nanoparticles can cluster together to form defined, dispersed structures, which can be termed supraparticles. Controlling the size, shape, and morphology of such entities is a central step in various fields of science and technology, ranging from colloid chemistry and soft matter physics to powder technology and pharmaceutical and food sciences. These diverse scientific communities have been investigating formation processes and structure/property relations of such supraparticles under completely different boundary conditions. On the fundamental side, the field is driven by the desire to gain maximum control of the assembly structures using very defined and tailored colloidal building blocks, whereas more applied disciplines focus on optimizing the functional properties from rather ill-defined starting materials. With this review article, we aim to provide a connecting perspective by outlining fundamental principles that govern the formation and functionality of supraparticles. We discuss the formation of supraparticles as a result of colloidal properties interplaying with external process parameters. We then outline how the structure of the supraparticles gives rise to diverse functional properties. They can be a result of the structure itself (emergent properties), of the colocalization of different, functional building blocks, or of coupling between individual particles in close proximity. Taken together, we aim to establish structure-property and process-structure relationships that provide unifying guidelines for the rational design of functional supraparticles with optimized properties. Finally, we aspire to connect the different disciplines by providing a categorized overview of the existing, diverging nomenclature of seemingly similar supraparticle structures.
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Affiliation(s)
- Susanne Wintzheimer
- Fraunhofer Institute for Silicate Research, ISC , Neunerplatz 2 , 97082 Würzburg , Germany
| | - Tim Granath
- Chair of Chemical Technology of Materials Synthesis , University Würzburg , Röntgenring 11 , 97070 Würzburg , Germany
| | - Maximilian Oppmann
- Fraunhofer Institute for Silicate Research, ISC , Neunerplatz 2 , 97082 Würzburg , Germany
| | - Thomas Kister
- INM-Leibniz Institute for New Materials , Campus D2 2, 66123 Saarbrücken , Germany
| | - Thibaut Thai
- INM-Leibniz Institute for New Materials , Campus D2 2, 66123 Saarbrücken , Germany
| | - Tobias Kraus
- INM-Leibniz Institute for New Materials , Campus D2 2, 66123 Saarbrücken , Germany
- Colloid and Interface Chemistry , Saarland University , Campus D2 2, 66123 Saarbrücken , Germany
| | - Nicolas Vogel
- Institute of Particle Technology , Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) , Haberstrasse 9A , 91058 Erlangen , Germany
| | - Karl Mandel
- Fraunhofer Institute for Silicate Research, ISC , Neunerplatz 2 , 97082 Würzburg , Germany
- Chair of Chemical Technology of Materials Synthesis , University Würzburg , Röntgenring 11 , 97070 Würzburg , Germany
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20
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Tan L, Liu Y, Mao B, Luo B, Gong G, Hong Y, Chen B, Shi W. Effective bandgap narrowing of Cu–In–Zn–S quantum dots for photocatalytic H2 production via cocatalyst-alleviated charge recombination. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00607a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Effective bandgap narrowing of Cu–In–Zn–S quantum dots is achieved with increased tolerance of Cu from the cocatalyst-alleviated charge recombination.
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Affiliation(s)
- Lili Tan
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Yanhong Liu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Baodong Mao
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Bifu Luo
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Guan Gong
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Yuanzhi Hong
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Biyi Chen
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Weidong Shi
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
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