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Bootharaju MS, Baek W, Lee S, Chang H, Kim J, Hyeon T. Magic-Sized Stoichiometric II-VI Nanoclusters. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2002067. [PMID: 33164322 DOI: 10.1002/smll.202002067] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/21/2020] [Indexed: 05/26/2023]
Abstract
Metal chalcogenide nanomaterials have gained widespread interest in the past two decades for their potential optoelectronic, energy, and catalytic applications. The colloidal growth of various forms of these materials, such as nanowires, platelets, and lamellar assemblies, proceeds through certain thermodynamically stable, ultrasmall (<2 nm) intermediates called magic-sized nanoclusters (MSCs). Due to quantum confinement and its resultant intriguing properties, isolation or direct synthesis of MSCs and their structure characterization, which is very much challenging, are current topics of fundamental and applied scientific research. By comprehensive understanding of the structure-activity relationships in MSCs, the nucleation and growth processes can be manipulated, resulting in the synthesis of novel metal chalcogenide materials for various applications. This review focuses on recent advances in the chemical synthesis, characterization, and theoretical calculations of CdSe and its related II-VI nanoclusters. It highlights the studies of photophysical and magneto-optical properties as well as heteroatom doping of MSCs followed by their chemical transformation to high-dimensional nanostructures. At the end of the review, future directions and possible ways to overcome the challenges in the research of semiconductor MSCs are also presented.
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Affiliation(s)
- Megalamane S Bootharaju
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Woonhyuk Baek
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sanghwa Lee
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hogeun Chang
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Junhee Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
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Kim JY, Shim KI, Han JW, Joo J, Heo NH, Seff K. Quantum Dots of [Na 4 Cs 6 PbBr 4 ] 8+ , Water Stable in Zeolite X, Luminesce Sharply in the Green. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001868. [PMID: 32686270 DOI: 10.1002/adma.202001868] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 06/24/2020] [Indexed: 06/11/2023]
Abstract
Nanocrystals (NCs) of CsPbX3 , X = Cl, Br, or I, have excellent photoluminescent properties: high quantum yield, tunable emission wavelengths (410-700 nm), and narrow emission band widths. CsPbBr3 NCs show high promise as a green-emitting material for use in wide color gamut displays. CsPbBr3 NCs have, however, not been commercialized because they are sensitive to moisture and heat. To avoid these problems, this work attempts to introduce CsPbBr3 into five zeolites. The zeolite X product, Pb,Br,H,Cs,Na-X, shows superior stability toward moisture, maintaining its initial luminescence properties after being under water for more than a month. Its structure, determined using single-crystal X-ray crystallography, shows that quantum dots (QDs) of [Na4 Cs6 PbBr4 ]8+ (not of CsPbBr3 ) have formed. They are tetrahedral PbBr4 2- ions (Pb-Br = 3.091(11) Å) surrounded by Na+ and Cs+ ions. Each fills the zeolite's supercage with its Pb2+ ion precisely at the center, a position of high symmetry. The peaks in the emission spectra of Pb,Br,H,Cs,Na-X and the CsPbBr3 NCs are both at about 520 nm. The FWHM of Pb,Br,H,Cs,Na-X, however, is narrower than any previously reported for any of the CsPbBr3 NCs, and for zeolite Y and the various mesoporous materials treated with CsPbBr3 .
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Affiliation(s)
- Joon Young Kim
- Department of Applied Chemistry, School of Applied Chemical Engineering, College of Engineering, Kyungpook National University, Daegu, 41566, Korea
| | - Kyu In Shim
- Department of Chemical Engineering and School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, 37673, Korea
| | - Jeong Woo Han
- Department of Chemical Engineering and School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, 37673, Korea
| | - Jin Joo
- Department of Applied Chemistry, School of Applied Chemical Engineering, College of Engineering, Kyungpook National University, Daegu, 41566, Korea
| | - Nam Ho Heo
- Department of Applied Chemistry, School of Applied Chemical Engineering, College of Engineering, Kyungpook National University, Daegu, 41566, Korea
| | - Karl Seff
- Department of Chemistry, University of Hawaii, 2545 The Mall, Honolulu, Hawaii, 96822, USA
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Diameter- and Length-controlled Synthesis of Ultrathin ZnS Nanowires and Their Size-Dependent UV Absorption Properties, Photocatalytical Activities and Band-Edge Energy Levels. NANOMATERIALS 2019; 9:nano9020220. [PMID: 30736439 PMCID: PMC6409554 DOI: 10.3390/nano9020220] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 01/29/2019] [Accepted: 02/04/2019] [Indexed: 01/16/2023]
Abstract
Benefiting from their ultra-small diameters and highly structural anisotropies, ultrathin semiconductor nanowires (USNWs) are well-known for their fascinating physical/chemical properties, as well as their promising applications in various fields. However, until now, it remains a challenge to synthesize high-quality USNWs with well-controlled diameters and lengths, let alone the exploration of their size-dependent properties and applications. To solve such a challenge, we report herein a ligand-induced low-temperature precursor thermolysis route for the controlled preparation of ultrathin ZnS nanowires, which is based on the oriented assembly of the in-situ formed ZnS clusters/tiny particles. Optimized synthetic conditions allowed the synthesis of ZnS nanowires with a diameter down to 1.0 nm and a length approaching 330 nm. The as-prepared ultrathin ZnS nanowires were then intensively examined by morphological, spectroscopic and electrochemical analytical means to explore their size-dependent optical absorption properties, photocatalytic activities and band-edge energy levels, as well as their underlying growth mechanism. Notably, these USNWs, especially for the thinnest nanowires, were identified to possess an excellent performance in both the selective absorption of ultraviolet (UV) light and photocatalytic degradation of dyes, thus enabling them to serve as longpass ultraviolet filters and high-efficiency photocatalysts, respectively. For the ultrathin ZnS nanowires with a diameter of 1.0 nm, it was also interesting to observe that their exciton absorption peak positions were kept almost unchanged during the continuous extension of their lengths, which has not been reported previously.
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Yong Y, Su X, Zhou Q, Kuang Y, Li X. The Zn 12O 12 cluster-assembled nanowires as a highly sensitive and selective gas sensor for NO and NO 2. Sci Rep 2017; 7:17505. [PMID: 29235489 PMCID: PMC5727522 DOI: 10.1038/s41598-017-17673-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 11/29/2017] [Indexed: 11/15/2022] Open
Abstract
Motivated by the recent realization of cluster-assembled nanomaterials as gas sensors, first-principles calculations are carried out to explore the stability and electronic properties of Zn12O12 cluster-assembled nanowires and the adsorption behaviors of environmental gases on the Zn12O12-based nanowires, including CO, NO, NO2, SO2, NH3, CH4, CO2, O2 and H2. Our results indicate that the ultrathin Zn12O12 cluster-assembled nanowires are particularly thermodynamic stable at room temperature. The CO, NO, NO2, SO2, and NH3 molecules are all chemisorbed on the Zn12O12-based nanowires with reasonable adsorption energies, but CH4, CO2, O2 and H2 molecules are only physically adsorbed on the nanowire. The electronic properties of the Zn12O12-based nanowire present dramatic changes after the adsorption of the NO and NO2 molecules, especially their electric conductivity and magnetic properties, however, the other molecules adsorption hardly change the electric conductivity of the nanowire. Meanwhile, the recovery time of the nanowire sensor at T = 300 K is estimated at 1.5 μs and 16.7 μs for NO and NO2 molecules, respectively. Furthermore, the sensitivities of NO and NO2 are much larger than that of the other molecules. Our results thus conclude that the Zn12O12-based nanowire is a potential candidate for gas sensors with highly sensitivity for NO and NO2.
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Affiliation(s)
- Yongliang Yong
- College of Physics and Engineering, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China. .,Henan Key Laboratory of Photoelectric Energy Storage Materials and Applications, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China.
| | - Xiangying Su
- College of Physics and Engineering, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China.,Henan Key Laboratory of Photoelectric Energy Storage Materials and Applications, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China
| | - Qingxiao Zhou
- College of Physics and Engineering, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China.,Henan Key Laboratory of Photoelectric Energy Storage Materials and Applications, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China
| | - Yanmin Kuang
- Institute of Photobiophysics, School of Physics and Electronics, Henan University, Kaifeng, 475004, People's Republic of China
| | - Xiaohong Li
- College of Physics and Engineering, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China.,Henan Key Laboratory of Photoelectric Energy Storage Materials and Applications, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China
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Friedfeld MR, Stein JL, Cossairt BM. Main-Group-Semiconductor Cluster Molecules as Synthetic Intermediates to Nanostructures. Inorg Chem 2017; 56:8689-8697. [DOI: 10.1021/acs.inorgchem.7b00291] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Max R. Friedfeld
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Jennifer L. Stein
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Brandi M. Cossairt
- Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
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Samokhvalov P, Artemyev M, Nabiev I. Basic Principles and Current Trends in Colloidal Synthesis of Highly Luminescent Semiconductor Nanocrystals. Chemistry 2013; 19:1534-46. [DOI: 10.1002/chem.201202860] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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