1
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Homer MK, Larson HC, Dixon GJ, Miura-Stempel E, Armstrong NR, Cossairt BM. Extremely Long-Lived Charge Donor States Formed by Visible Irradiation of Quantum Dots. ACS NANO 2024; 18:24591-24602. [PMID: 39161977 DOI: 10.1021/acsnano.4c10526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/21/2024]
Abstract
Using cyclic voltammetry under illumination, we recently demonstrated that CdS quantum dots (QDs) form charge donor states that live for at least several minutes after illumination ends, ∼12 orders of magnitude longer than expected for free carriers. This time scale suggests that the conventionally accepted mechanism of charge transfer, wherein charges directly transfer to an acceptor following exciton dissociation, cannot be complete. Because of these long time scales, this unconventional pathway is not readily observed using time-resolved spectroscopy to probe charge transfer dynamics. Here, we investigated the chemical nature of these charge donor states using cyclic voltammetry under illumination coupled with NMR spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and optical spectroscopy. Our data reveal that charges are stored locally rather than as free carriers, and the number of charges stored is dependent on the QD surface ligation and stoichiometry. Altogether, our results confirm that electrons are stored at ligated surface Cd, these sites are competent charge donors, and this storage is charge balanced by X-type ligand desorption. We found that charge storage occurs in every QD system studied, including CdS, CdSe, and InP capped with carboxylate and phosphonate ligands.
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Affiliation(s)
- Micaela K Homer
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Helen C Larson
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Grant J Dixon
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Emily Miura-Stempel
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Neal R Armstrong
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arkansas 85721, United States
| | - Brandi M Cossairt
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
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2
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Savchenko S, Vokhmintsev A, Karabanalov M, Zhang Y, Henaish A, Neogi A, Weinstein I. Thermally assisted optical processes in InP/ZnS quantum dots. Phys Chem Chem Phys 2024; 26:18727-18740. [PMID: 38934056 DOI: 10.1039/d3cp03931e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
The utilization of InP-based biocompatible quantum dots (QDs) necessitates a comprehensive understanding of the structure-dependent characteristics influencing their optical behavior. The optimization of core/shell QDs for practical applications is of particular interest due to their reduced toxicity, enhanced photostability, and improved luminescence efficiency. This optimization involves analyzing thermally activated processes involving exciton and defect-related energy levels. This study investigates water-soluble colloidal InP/ZnS QDs with varying shell thicknesses and stabilizing coatings using temperature-dependent optical absorption (OA) and photoluminescence (PL). Our results indicate that all samples experience temperature-induced shifts in exciton absorption and luminescence peaks due to interactions with acoustic phonons. Despite the wide size distribution of nanocrystals, the halfwidth of the bands remains constant. We observe a temperature-dependent Stokes shift in InP/ZnS QDs, revealing the fine structure of exciton states across different configurations. Furthermore, our findings demonstrate common mechanisms underlying PL thermal quenching in these QDs, regardless of the shell thickness or coating type. Specifically, defect-related emissions arise from localized energy levels at the core/shell interface. At the same time, exciton PL quenching primarily occurs through thermally activated electron migration from the InP core to the ZnS shell. Overall, our study highlights the potential for tailoring the temperature response of InP/ZnS QDs by adjusting shell thickness, offering opportunities to optimize their performance for specific applications.
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Affiliation(s)
- Sergey Savchenko
- NANOTECH Centre, Ural Federal University, 620002 Ekaterinburg, Russia
| | | | | | - Yanning Zhang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Ahmed Henaish
- NANOTECH Centre, Ural Federal University, 620002 Ekaterinburg, Russia
- Physics Department, Tanta University, 31527 Tanta, Egypt
| | - Arup Neogi
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Ilya Weinstein
- NANOTECH Centre, Ural Federal University, 620002 Ekaterinburg, Russia
- Institute of Metallurgy, Ural Branch of Russian Academy of Sciences, 620016 Ekaterinburg, Russia
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3
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Lee JE, Lee CJ, Lee SJ, Jeong UH, Park JG. Potassium Iodide Doping for Vacancy Substitution and Dangling Bond Repair in InP Core-Shell Quantum Dots. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1055. [PMID: 38921931 PMCID: PMC11206699 DOI: 10.3390/nano14121055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/11/2024] [Accepted: 06/18/2024] [Indexed: 06/27/2024]
Abstract
This work highlights the novel approach of incorporating potassium iodide (KI) doping during the synthesis of In0.53P0.47 core quantum dots (QDs) to significantly reduce the concentration of vacancies (i.e., In vacancies; VIn-) within the bulk of the core QD and inhibit the formation of InPOx at the core QD-Zn0.6Se0.4 shell interfaces. The photoluminescence quantum yield (PLQY) of ~97% and full width at half maximum (FWHM) of ~40 nm were achieved for In0.53P0.47/Zn0.6Se0.4/Zn0.6Se0.1S0.3/Zn0.5S0.5 core/multi-shell QDs emitting red light, which is essential for a quantum-dot organic light-emitting diode (QD-OLED) without red, green, and blue crosstalk. KI doping eliminated VIn- in the core QD bulk by forming K+-VIn- substitutes and effectively inhibited the formation of InPO4(H2O)2 at the core QD-Zn0.6Se0.4 shell interface through the passivation of phosphorus (P)-dangling bonds by P-I bonds. The elimination of vacancies in the core QD bulk was evidenced by the decreased relative intensity of non-radiative unpaired electrons, measured by electron spin resonance (ESR). Additionally, the inhibition of InPO4(H2O)2 formation at the core QD and shell interface was confirmed by the absence of the {210} X-ray diffraction (XRD) peak intensity for the core/multi-shell QDs. By finely tuning the doping concentration, the optimal level was achieved, ensuring maximum K-VIn- substitution, minimal K+ and I- interstitials, and maximum P-dangling bond passivation. This resulted in the smallest core QD diameter distribution and maximized optical properties. Consequently, the maximum PLQY (~97%) and minimum FWHM (~40 nm) were observed at 3% KI doping. Furthermore, the color gamut of a QD-OLED display using R-, G-, and B-QD functional color filters (i.e., ~131.1%@NTSC and ~98.2@Rec.2020) provided a nearly perfect color representation, where red-light-emitting KI-doped QDs were applied.
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Affiliation(s)
- Ji-Eun Lee
- Department of Information Display Engineering, Hanyang University, Seoul 04763, Republic of Korea;
| | - Chang-Jin Lee
- Department of Electronic Engineering, Hanyang University, Seoul 04763, Republic of Korea; (C.-J.L.); (S.-J.L.); (U.-H.J.)
| | - Seung-Jae Lee
- Department of Electronic Engineering, Hanyang University, Seoul 04763, Republic of Korea; (C.-J.L.); (S.-J.L.); (U.-H.J.)
- Samsung Electronics, 130 Samsung-ro, Suwon 16678, Republic of Korea
| | - Ui-Hyun Jeong
- Department of Electronic Engineering, Hanyang University, Seoul 04763, Republic of Korea; (C.-J.L.); (S.-J.L.); (U.-H.J.)
| | - Jea-Gun Park
- Department of Information Display Engineering, Hanyang University, Seoul 04763, Republic of Korea;
- Department of Electronic Engineering, Hanyang University, Seoul 04763, Republic of Korea; (C.-J.L.); (S.-J.L.); (U.-H.J.)
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4
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Hai Y, Gahlot K, Tanchev M, Mutalik S, Tekelenburg EK, Hong J, Ahmadi M, Piveteau L, Loi MA, Protesescu L. Metal-Solvent Complex Formation at the Surface of InP Colloidal Quantum Dots. J Am Chem Soc 2024; 146:12808-12818. [PMID: 38668701 PMCID: PMC11082887 DOI: 10.1021/jacs.4c03325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/17/2024] [Accepted: 04/17/2024] [Indexed: 05/09/2024]
Abstract
The surface chemistry of colloidal semiconductor nanocrystals (QDs) profoundly influences their physical and chemical attributes. The insulating organic shell ensuring colloidal stability impedes charge transfer, thus limiting optoelectronic applications. Exchanging these ligands with shorter inorganic ones enhances charge mobility and stability, which is pivotal for using these materials as active layers for LEDs, photodetectors, and transistors. Among those, InP QDs also serve as a model for surface chemistry investigations. This study focuses on group III metal salts as inorganic ligands for InP QDs. We explored the ligand exchange mechanism when metal halide, nitrate, and perchlorate salts of group III (Al, In Ga), common Lewis acids, are used as ligands for the conductive inks. Moreover, we compared the exchange mechanism for two starting model systems: InP QDs capped with myristate and oleylamine as X- and L-type native organic ligands, respectively. We found that all metal halide, nitrate, and perchlorate salts dissolved in polar solvents (such as n-methylformamide, dimethylformamide, dimethyl sulfoxide, H2O) with various polarity formed metal-solvent complex cations [M(Solvent)6]3+ (e.g., [Al(MFA)6]3+, [Ga(MFA)6]3+, [In(MFA)6]3+), which passivated the surface of InP QDs after the removal of the initial organic ligand. All metal halide capped InP/[M(Solvent)6]3+ QDs show excellent colloidal stability in polar solvents with high dielectric constant even after 6 months in concentrations up to 74 mg/mL. Our findings demonstrate the dominance of dissociation-complexation mechanisms in polar solvents, ensuring colloidal stability. This comprehensive understanding of InP QD surface chemistry paves the way for exploring more complex QD systems such as InAs and InSb QDs.
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Affiliation(s)
- Yun Hai
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, Groningen, 9747AG, The Netherlands
| | - Kushagra Gahlot
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, Groningen, 9747AG, The Netherlands
| | - Mark Tanchev
- Institute
of Chemistry and Chemical Engineering, École
Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Suhas Mutalik
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, Groningen, 9747AG, The Netherlands
| | - Eelco K. Tekelenburg
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, Groningen, 9747AG, The Netherlands
| | - Jennifer Hong
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, Groningen, 9747AG, The Netherlands
| | - Majid Ahmadi
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, Groningen, 9747AG, The Netherlands
| | - Laura Piveteau
- Institute
of Chemistry and Chemical Engineering, École
Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Maria Antonietta Loi
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, Groningen, 9747AG, The Netherlands
| | - Loredana Protesescu
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, Groningen, 9747AG, The Netherlands
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5
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Shin J, Choi M, Shim D, Ziehl TJ, Park S, Cho E, Zhang P, Lee H, Kang J, Jeong S. Unveiling the Nanocluster Conversion Pathway for Highly Monodisperse InAs Colloidal Quantum Dots. JACS AU 2024; 4:1097-1106. [PMID: 38559718 PMCID: PMC10976596 DOI: 10.1021/jacsau.3c00809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/02/2024] [Accepted: 02/06/2024] [Indexed: 04/04/2024]
Abstract
Colloidal quantum dots (CQDs) have garnered significant attention in nanoscience and technology, with a particular emphasis on achieving high monodispersity in their synthesis. Recent advances in understanding the chemistry of reaction intermediates such as magic-sized nanoclusters (MSC) have paved the way for innovative synthetic strategies. Notably, monodisperse CQDs of various compositions, including indium phosphide, indium arsenide, and cadmium chalcogenide, have been successfully prepared using nanocluster intermediates as single-source precursors. Still, the early stage conversion chemistry of these nanoclusters preceding CQD formation has not been fully unveiled yet. Herein, we report the first-order conversion of amorphous nanoclusters (AMCs) to InAs MSCs prior to the formation of CQDs. We find that MSC, isolated via gel-permeation chromatography, is more stable than purified AMCs, as demonstrated in various chemical and thermolytic reactions. While the surface of InAs AMCs and MSC is similarly bound with carboxylate ligands, detailed structural analyses employing synchrotron X-ray scattering and X-ray absorption spectroscopy unveil subtle distinctions arising from the distinct surface properties and structural disorder characteristics of InAs nanoclusters. We propose that InAs AMCs undergo a surface reduction and structural ordering process, resulting in the formation of an InAs MSC in a thermodynamically local minimum state. Furthermore, we demonstrate that both types of nanoclusters serve as viable precursors, providing a similar monomer supply rate at elevated temperatures of around 300 °C. This study offers invaluable insights into the interplay of structure and chemical stability in binary nanoclusters, enhancing our ability to design these nanoclusters as precursors for highly monodisperse CQDs.
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Affiliation(s)
- Jibin Shin
- Department of Energy Science (DOES) and Center for Artificial Atoms, Sungkyunkwan University (SKKU), Suwon, Gyeonggi-do 16419, South Korea
| | - Mahnmin Choi
- Department of Energy Science (DOES) and Center for Artificial Atoms, Sungkyunkwan University (SKKU), Suwon, Gyeonggi-do 16419, South Korea
| | - Doeun Shim
- Department of Physics and Chemistry, DGIST, Daegu 42988, South Korea
| | - Tyler Joe Ziehl
- Department of Chemistry, Dalhousie University, 6299 South Street, Halifax NSB3H 4R2, Canada
| | - Seongmin Park
- Department of Energy Science (DOES) and Center for Artificial Atoms, Sungkyunkwan University (SKKU), Suwon, Gyeonggi-do 16419, South Korea
| | - Eunhye Cho
- Department of Energy Science (DOES) and Center for Artificial Atoms, Sungkyunkwan University (SKKU), Suwon, Gyeonggi-do 16419, South Korea
| | - Peng Zhang
- Department of Chemistry, Dalhousie University, 6299 South Street, Halifax NSB3H 4R2, Canada
| | - Hangil Lee
- Department of Chemistry, Sookmyung Women's University, Seoul 04310, South Korea
| | - Joongoo Kang
- Department of Physics and Chemistry, DGIST, Daegu 42988, South Korea
| | - Sohee Jeong
- Department of Energy Science (DOES) and Center for Artificial Atoms, Sungkyunkwan University (SKKU), Suwon, Gyeonggi-do 16419, South Korea
- Sungkyunkwan Institute of Energy Science and Technology (SIEST), Sungkyunkwan University (SKKU), Suwon, Gyeonggi-do 16419, South Korea
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6
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Liu L, Bai B, Yang X, Du Z, Jia G. Anisotropic Heavy-Metal-Free Semiconductor Nanocrystals: Synthesis, Properties, and Applications. Chem Rev 2023; 123:3625-3692. [PMID: 36946890 DOI: 10.1021/acs.chemrev.2c00688] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Heavy-metal (Cd, Hg, and Pb)-containing semiconductor nanocrystals (NCs) have been explored widely due to their unique optical and electrical properties. However, the toxicity risks of heavy metals can be a drawback of heavy-metal-containing NCs in some applications. Anisotropic heavy-metal-free semiconductor NCs are desirable replacements and can be realized following the establishment of anisotropic growth mechanisms. These anisotropic heavy-metal-free semiconductor NCs can possess lower toxicity risks, while still exhibiting unique optical and electrical properties originating from both the morphological and compositional anisotropy. As a result, they are promising light-emitting materials in use various applications. In this review, we provide an overview on the syntheses, properties, and applications of anisotropic heavy-metal-free semiconductor NCs. In the first section, we discuss hazards of heavy metals and introduce the typical heavy-metal-containing and heavy-metal-free NCs. In the next section, we discuss anisotropic growth mechanisms, including solution-liquid-solid (SLS), oriented attachment, ripening, templated-assisted growth, and others. We discuss mechanisms leading both to morphological anisotropy and to compositional anisotropy. Examples of morphological anisotropy include growth of nanorods (NRs)/nanowires (NWs), nanotubes, nanoplatelets (NPLs)/nanosheets, nanocubes, and branched structures. Examples of compositional anisotropy, including heterostructures and core/shell structures, are summarized. Third, we provide insights into the properties of anisotropic heavy-metal-free NCs including optical polarization, fast electron transfer, localized surface plasmon resonances (LSPR), and so on, which originate from the NCs' anisotropic morphologies and compositions. Finally, we summarize some applications of anisotropic heavy-metal-free NCs including catalysis, solar cells, photodetectors, lighting-emitting diodes (LEDs), and biological applications. Despite the huge progress on the syntheses and applications of anisotropic heavy-metal-free NCs, some issues still exist in the novel anisotropic heavy-metal-free NCs and the corresponding energy conversion applications. Therefore, we also discuss the challenges of this field and provide possible solutions to tackle these challenges in the future.
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Affiliation(s)
- Long Liu
- Key Lab for Special Functional Materials, Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
| | - Bing Bai
- Key Lab for Special Functional Materials, Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
| | - Xuyong Yang
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai 200072, P. R. China
| | - Zuliang Du
- Key Lab for Special Functional Materials, Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
| | - Guohua Jia
- School of Molecular and Life Sciences, Curtin University, Perth, WA 6102, Australia
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7
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Bahmani Jalali H, De Trizio L, Manna L, Di Stasio F. Indium arsenide quantum dots: an alternative to lead-based infrared emitting nanomaterials. Chem Soc Rev 2022; 51:9861-9881. [PMID: 36408788 PMCID: PMC9743785 DOI: 10.1039/d2cs00490a] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Indexed: 11/22/2022]
Abstract
Colloidal quantum dots (QDs) emitting in the infrared (IR) are promising building blocks for numerous photonic, optoelectronic and biomedical applications owing to their low-cost solution-processability and tunable emission. Among them, lead- and mercury-based QDs are currently the most developed materials. Yet, due to toxicity issues, the scientific community is focusing on safer alternatives. In this regard, indium arsenide (InAs) QDs are one of the best candidates as they can absorb and emit light in the whole near infrared spectral range and they are RoHS-compliant, with recent trends suggesting that there is a renewed interest in this class of materials. This review focuses on colloidal InAs QDs and aims to provide an up-to-date overview spanning from their synthesis and surface chemistry to post-synthesis modifications. We provide a comprehensive overview from initial synthetic methods to the most recent developments on the ability to control the size, size distribution, electronic properties and carrier dynamics. Then, we describe doping and alloying strategies applied to InAs QDs as well as InAs based heterostructures. Furthermore, we present the state-of-the-art applications of InAs QDs, with a particular focus on bioimaging and field effect transistors. Finally, we discuss open challenges and future perspectives.
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Affiliation(s)
- Houman Bahmani Jalali
- Photonic Nanomaterials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Luca De Trizio
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Liberato Manna
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Francesco Di Stasio
- Photonic Nanomaterials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy.
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8
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Zeng Z, Yuan S, Yi C, Zhao W, Yuan Z, Dong Y, Zhu J, Yang Y, Ge P. Controlling of Ni-Based Composites in Salt Melt Synthesis with High Sodium-Ion Storage Performance. ACS APPLIED MATERIALS & INTERFACES 2022; 14:52067-52078. [PMID: 36346750 DOI: 10.1021/acsami.2c17568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Owing to its fascinating properties (such as high theoretical specific capacity and considerable conductivity), nickel sulfide (NiS) was investigated comprehensively as an anode material in sodium-ion batteries. However, they still suffered from volume expansion and sluggish kinetics, resulting in serious cycle capabilities. Herein, through controlling the kind of molten salts (Na2SO4, NaCl, and Na2CO3) in salt melt synthesis (SMS), a series of NiS with an N, S-codoped carbon layer was successfully prepared, accompanied with different morphologies and structures (earthworm-like belts and triangular and spherical particles). Tailored by the ionic strength and viscosity of molten salts, the as-prepared samples displayed different crystallization behaviors, bringing about a difference in electrochemical performance. As earthworm-like NiS@C was explored as an anode material for SIBs, an initial capacity of 712.5 mAh g-1 at 0.5 A g-1 could be obtained, and it still kept 527.4 mAh g-1 after 100 cycles. Even at 2.0 A g-1, a capacity of 508.6 mAh g-1 could be achieved. Meanwhile, with the assistance of detailed kinetic analysis, the rapid diffusion behaviors of Na+ and redox reaction mechanisms of as-fabricated samples were proven for the enhanced electrochemical properties. Given this, this work is expected to provide a method for designing the morphology and structure of metal sulfides, while shedding light on the orientation of fabricating advanced electrode materials for SIBs.
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Affiliation(s)
- Zihao Zeng
- School of Minerals Processing and Bioengineering, Central South University, Changsha410083, China
| | - Shaohui Yuan
- School of Minerals Processing and Bioengineering, Central South University, Changsha410083, China
| | - Chenxing Yi
- School of Minerals Processing and Bioengineering, Central South University, Changsha410083, China
| | - Wenqing Zhao
- School of Minerals Processing and Bioengineering, Central South University, Changsha410083, China
| | - Zhengqiao Yuan
- School of Minerals Processing and Bioengineering, Central South University, Changsha410083, China
| | - Yu Dong
- School of Minerals Processing and Bioengineering, Central South University, Changsha410083, China
| | - Jinliang Zhu
- School of Resources, Environment and Materials, Guangxi University, Nanning530004, China
- MOE Key Laboratory of Processing Technology for Non-Ferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials, Guangxi University, Nanning530004, China
| | - Yue Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha410083, China
| | - Peng Ge
- School of Minerals Processing and Bioengineering, Central South University, Changsha410083, China
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9
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Cheng X, Liu M, Zhang Q, He M, Liao X, Wan Q, Zhan W, Kong L, Li L. A Novel Strategy to Enhance the Photostability of InP/ZnSe/ZnS Quantum Dots with Zr Doping. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4044. [PMID: 36432331 PMCID: PMC9698936 DOI: 10.3390/nano12224044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/15/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
Plentiful research of InP semiconductor quantum dots (QDs) has been launched over the past few decades for their excellent photoluminescence properties and environmentally friendly characteristics in various applications. However, InP QDs show inferior photostability because they are extremely sensitive to the ambient environment. In this study, we propose a novel method to enhance the photostability of InP/ZnSe/ZnS QDs by doping zirconium into the ZnS layer. We certify that Zr can be oxidized to Zr oxides, which can prevent the QDs from suffering oxidation during light irradiation. The InP/ZnSe/ZnS:Zr QDs maintained 78% of the original photoluminescence quantum yields without significant photodegradation under the irradiation of LED light (450 nm, 3.0 W power intensity) for 14 h, while conventional InP/ZnSe/ZnS QDs dramatically decreased to 29%.
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Affiliation(s)
- Xunqiang Cheng
- School of Environment Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Mingming Liu
- School of Environment Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qinggang Zhang
- School of Environment Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Mengda He
- School of Environment Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xinrong Liao
- School of Environment Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qun Wan
- School of Environment Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wenji Zhan
- School of Environment Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Long Kong
- School of Environment Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Liang Li
- School of Environment Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Macao Institute of Materials Science and Engineering (MIMSE), MUST-SUDA Joint Research Center for Advanced Functional Materials, Zhuhai MUST Science and Technology Research Institute, Macau University of Science and Technology, Taipa, Macao 999078, China
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10
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El-Hawwary SS, Abd Almaksoud HM, Saber FR, Elimam H, Sayed AM, El Raey MA, Abdelmohsen UR. Green-synthesized zinc oxide nanoparticles, anti-Alzheimer potential and the metabolic profiling of Sabal blackburniana grown in Egypt supported by molecular modelling. RSC Adv 2021; 11:18009-18025. [PMID: 35480186 PMCID: PMC9033216 DOI: 10.1039/d1ra01725j] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 04/19/2021] [Indexed: 01/18/2023] Open
Abstract
Nowadays, the biosynthesis of metal nanoparticles, particularly from plants, has been gaining interest. In the present work, the methanolic extracts of leaves, fruits, and the pollen grains of Sabal blackburniana were used for the green synthesis of ZnO nanoparticles, which were early detected by the formation of precipitate and further confirmed by UV-vis spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infra-red (FT-IR) spectroscopy and zeta potential (ZP) studies. TEM analysis has shown different shapes, predominantly irregular small spherical narrow particles included in hexagonal structures with size ranging from 2.23 to 49.56 nm. The XRD pattern confirmed that all synthesized ZnO nanoparticles have wurtzite hexagonal structure with crystalline nature. The average particle crystallite sizes were 47.21, 47.67 and 47.8 nm. The UV-visible spectra showed λ max in the range of 354-368 nm, which indicated the presence of ZnO nanoparticles. The FT-IR analysis identifies the characteristic functional groups present on the surface of ZnO nanoparticles. The ZP determination demonstrated that all representative selected synthesized ZnONPs exhibited acceptable ZP values of -30.8 to -45.9 mV, which indicated their good stability. In addition, the anti-Alzheimer potential of the selected extracts and ZnONPs was evaluated by assessing acetylcholinesterase inhibitory activity in vitro according to the improved Ellman method. The results indicated that the selected extracts have acetylcholinesterase inhibitory activity, and highlighted the promising inhibitory potential of green-synthesized ZnONPs using pollen grains, fruits and leaves extracts; they exhibited a potent inhibitory effect with IC50 values 63.78 ± 1.04651, 81.985 ± 3.075 and 117.95 ± 6.858 ng ml-1 respectively in comparison to donepezil as standard (IC50 = 50.7 ± 5.769 ng ml-1). Dereplication analysis of the selected extracts was performed using LC-MS; metabolic profiling revealed the presence of 41 compounds belonging to various chemical classes: flavonoids, steroidal saponins, terpenoids, alkaloids, lignans, sterols and fatty acids. Docking these dereplicated metabolites against the human AChE showed that the non-glycosylated flavonoid class of compounds was able to achieve interesting binding modes inside the AChE active site; they are suggested to be associated with the observed anti-AChE activity of Sabal extracts. This study is the first report to shed light on the acetylcholinesterase inhibitory activity of green-synthesized ZnO nanoparticles of S. blackburniana metabolites.
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Affiliation(s)
- Seham S El-Hawwary
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University Cairo 11562 Egypt
| | | | - Fatema R Saber
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University Cairo 11562 Egypt
| | - Hanan Elimam
- Department of Biochemistry, Faculty of Pharmacy, University of Sadat City Sadat City 32897 Egypt
| | - Ahmed M Sayed
- Department of Pharmacognosy, Faculty of Pharmacy, Nahda University Beni-Suef 62513 Egypt
| | - Mohamed A El Raey
- Phytochemistry and Plant systematics Department, Pharmaceutical Division, National Research Centre Dokki Cairo Egypt
| | - Usama Ramadan Abdelmohsen
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University Universities Zone, 61111 New Minia City Minia Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University 61519 Minia Egypt
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11
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Jonnalagadda M, Prasad VB, Raghu AV. Synthesis of composite nanopowder through Mn doped ZnS-CdS systems and its structural, optical properties. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.129875] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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NIR-excitable heterostructured upconversion perovskite nanodots with improved stability. Nat Commun 2021; 12:219. [PMID: 33431869 PMCID: PMC7801668 DOI: 10.1038/s41467-020-20551-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 12/08/2020] [Indexed: 01/27/2023] Open
Abstract
There is a great need to develop heterostructured nanocrystals which combine two or more different materials into single nanoparticles with combined advantages. Lead halide perovskite quantum dots (QDs) have attracted much attention due to their excellent optical properties but their biological applications have not been much explored due to their poor stability and short penetration depth of the UV excitation light in tissues. Combining perovskite QDs with upconversion nanoparticles (UCNP) to form hybrid nanocrystals that are stable, NIR excitable and emission tunable is important, however, this is challenging because hexagonal phase UCNP can not be epitaxially grown on cubic phase perovskite QDs directly or vice versa. In this work, one-pot synthesis of perovskite-UCNP hybrid nanocrystals consisting of cubic phase perovskite QDs and hexagonal phase UCNP is reported, to form a watermelon-like heterostructure using cubic phase UCNP as an intermediate transition phase. The nanocrystals are NIR-excitable with much improved stability. Combining two or more different materials with different crystal structures into single nanoparticle with combined advantages is challenging. Here, the authors demonstrate one-pot synthesis of perovskite-upconversion hybrid nanocrystals consisting of cubic and hexagonal phases to form a watermelon-like heterostructure.
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Kim T, Lim S, Yun S, Jeong S, Park T, Choi J. Design Strategy of Quantum Dot Thin-Film Solar Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2002460. [PMID: 33079485 DOI: 10.1002/smll.202002460] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 07/28/2020] [Indexed: 06/11/2023]
Abstract
Quantum dots (QDs) are emerging photovoltaic materials that display exclusive characteristics that can be adjusted through modification of their size and surface chemistry. However, designing a QD-based optoelectronic device requires specialized approaches compared with designing conventional bulk-based solar cells. In this paper, design considerations for QD thin-film solar cells are introduced from two different viewpoints: optics and electrics. The confined energy level of QDs contributes to the adjustment of their band alignment, enabling their absorption characteristics to be adapted to a specific device purpose. However, the materials selected for this energy adjustment can increase the light loss induced by interface reflection. Thus, management of the light path is important for optical QD solar cell design, whereas surface modification is a crucial issue for the electrical design of QD solar cells. QD thin-film solar cell architectures are fabricated as a heterojunction today, and ligand exchange provides suitable doping states and enhanced carrier transfer for the junction. Lastly, the stability issues and methods on QD thin-film solar cells are surveyed. Through these strategies, a QD solar cell study can provide valuable insights for future-oriented solar cell technology.
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Affiliation(s)
- Taewan Kim
- Chemical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
- Department of Energy Science and Center for Artificial Atoms, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Seyeong Lim
- Chemical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Sunhee Yun
- Chemical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Sohee Jeong
- Department of Energy Science and Center for Artificial Atoms, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Taiho Park
- Chemical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Jongmin Choi
- Energy Science & Engineering, Daegu Gyeongbuk Institute of Science and Technology, Daegu, 42988, Republic of Korea
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14
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Calvin JJ, Swabeck JK, Sedlak AB, Kim Y, Jang E, Alivisatos AP. Thermodynamic Investigation of Increased Luminescence in Indium Phosphide Quantum Dots by Treatment with Metal Halide Salts. J Am Chem Soc 2020; 142:18897-18906. [PMID: 33095575 DOI: 10.1021/jacs.0c08954] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Increasing the quantum yields of InP quantum dots is important for their applications, particularly for use in consumer displays. While several methods exist to improve quantum yield, the addition of inorganic metal halide salts has proven promising. To further investigate this phenomenon, InP quantum dots dispersed in tetrahydrofuran were titrated with ZnCl2, ZnBr2, and InCl3. The optical properties were observed, and the reactions were studied by using quantitative 1H NMR and thermodynamic measurements from isothermal titration calorimetry. These measurements contradict the previously hypothesized reaction mechanism in which metal halide salts, acting as Z-type ligands, passivate undercoordinated anions on the surface of the quantum dots. This work provides evidence for a newly proposed mechanism wherein the metal halide salts undergo a ligand exchange with indium myristate. Thermodynamic measurements prove key to supporting this new mechanism, particularly in describing the organic ligand interactions on the surface. An Ising model was used to simulate the quantum dot surface and was fit by using thermodynamic and 1H NMR data. Together, these data and the proposed exchange mechanism provide greater insight into the surface chemistry of quantum dots.
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Affiliation(s)
- Jason J Calvin
- Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Joseph K Swabeck
- Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | | | - Yongwook Kim
- Inorganic Material Lab, Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, Republic of Korea
| | - Eunjoo Jang
- Inorganic Material Lab, Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, Republic of Korea
| | - A Paul Alivisatos
- Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.,Kavli Energy NanoScience Institute, Berkeley, California 94720, United States
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15
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Aldalbahi A, Alterary S, Ali Abdullrahman Almoghim R, Awad MA, Aldosari NS, Fahad Alghannam S, Nasser Alabdan A, Alharbi S, Ali Mohammed Alateeq B, Abdulrahman Al Mohsen A, Alkathiri MA, Abdulrahman Alrashed R. Greener Synthesis of Zinc Oxide Nanoparticles: Characterization and Multifaceted Applications. Molecules 2020; 25:E4198. [PMID: 32937751 PMCID: PMC7571220 DOI: 10.3390/molecules25184198] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/04/2020] [Accepted: 09/10/2020] [Indexed: 02/05/2023] Open
Abstract
Nanoparticles (NPs) have unique properties compared to their bulk counterparts, and they have potentials for various applications in many fields of life science. Green-synthesized NPs have garnered considerable interest due to their inherent features such as rapidity, eco-friendliness and cost-effectiveness. Zinc oxide nanoparticles (ZnO NPs) were synthesized using an aqueous extract of Kalanchoe blossfeldiana as a reducing agent. The resulting nanoparticles were characterized via X-ray diffraction (XRD), dynamic light scattering (DLS), UV-Vis spectroscopy, photoluminescence (PL), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). The antimicrobial potential of the synthesized ZnO NPs against bacterial and fungal strains was examined by the disk diffusion method, and they showed a promising antibacterial and antifungal potential. The catalytic activity of the synthesized ZnO NPs in reducing methylene blue (MB) and eosin was studied via UV-Vis spectroscopy. The decolorization percentages of the MB and Eosin Y dyes were 84% and 94%, respectively, which indicate an efficient degradation of the ZnO NPs. In addition, the cytotoxic activity of the ZnO NPs on the HeLa cell line was evaluated via in vitro assay. The MTT assay results demonstrate a potent cytotoxic effect of the ZnO NPs against the HeLa cancer cell line.
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Affiliation(s)
- Ali Aldalbahi
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
- King Abdullah Institute of Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
| | - Seham Alterary
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
- King Abdullah Institute of Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
| | | | - Manal A. Awad
- King Abdullah Institute of Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
| | - Noura S. Aldosari
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (N.S.A.); (S.F.A.); (B.A.M.A.); (A.A.A.M.)
| | - Shouq Fahad Alghannam
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (N.S.A.); (S.F.A.); (B.A.M.A.); (A.A.A.M.)
| | - Alhanouf Nasser Alabdan
- Department of Biochemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia; (R.A.A.A.); (A.N.A.)
| | - Shaden Alharbi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Budur Ali Mohammed Alateeq
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (N.S.A.); (S.F.A.); (B.A.M.A.); (A.A.A.M.)
| | - Atheer Abdulrahman Al Mohsen
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (N.S.A.); (S.F.A.); (B.A.M.A.); (A.A.A.M.)
| | - Munirah A. Alkathiri
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (M.A.A.); (R.A.A.)
| | - Raghad Abdulrahman Alrashed
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (M.A.A.); (R.A.A.)
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Ali M, Ikram M, Ijaz M, Ul-Hamid A, Avais M, Anjum AA. Green synthesis and evaluation of n-type ZnO nanoparticles doped with plant extract for use as alternative antibacterials. APPLIED NANOSCIENCE 2020. [DOI: 10.1007/s13204-020-01451-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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17
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Zhang J, Gu H. Growth of InZnP/ZnS core/shell quantum dots with wide-range and refined tunable photoluminescence wavelengths. Dalton Trans 2020; 49:6119-6126. [PMID: 32323683 DOI: 10.1039/d0dt00575d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Owing to their environmentally friendly characteristic, InP-based quantum dots (QDs) show great potential in various fields as an alternative to Cd-based QDs. However, the current mainstream synthesis process, the (TMS)3P-based injection method, still faces many challenges, such as the high cost of (TMS)3P and complex temperature control. In contrast, the solvothermal method is considered to be more feasible and reproducible. Despite its potential advantages, little has been done to understand how the precursors influence the synthesis of InP QDs using the solvothermal method. In this research, InZnP/ZnS QDs were synthesized using practical phosphorus precursors (DEA)3P or (DMA)3P. Through the feasible regulation of zinc, indium, phosphorus and sulfur precursors, the band gap of the QDs could be widely and accurately tuned, and a much wider photoluminescence wavelength ranging from 484 nm to 651 nm could be achieved. Furthermore, InI3 and InBr3 contributed to the blueshift in the PL wavelengths, and the combination of (DEA)3P, (DMA)3P, n-DDT and t-DDT refined the PL wavelength with a small tuning gap of 5 nm.
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Affiliation(s)
- Jinyuan Zhang
- Institute of Semiconductors, South China Normal University, Guangzhou 510631, China.
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18
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Kim Y, Chang JH, Choi H, Kim YH, Bae WK, Jeong S. III-V colloidal nanocrystals: control of covalent surfaces. Chem Sci 2019; 11:913-922. [PMID: 34084346 PMCID: PMC8145357 DOI: 10.1039/c9sc04290c] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Accepted: 11/25/2019] [Indexed: 01/15/2023] Open
Abstract
Colloidal quantum dots (QDs) are nanosized semiconductors whose electronic features are dictated by the quantum confinement effect. The optical, electrical, and chemical properties of QDs are influenced by their dimensions and surface landscape. The surface of II-VI and IV-VI QDs has been extensively explored; however, in-depth investigations on the surface of III-V QDs are still lagging behind. This Perspective discusses the current understanding of the surface of III-V QDs, outlines deep trap states presented by surface defects, and suggests strategies to overcome challenges associated with deep traps. Lastly, we discuss a route to create well-defined facets in III-V QDs by providing a platform for surface studies and a recently reported approach in atomistic understanding of covalent III-V QD surfaces using the electron counting model with fractional dangling bonds.
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Affiliation(s)
- Youngsik Kim
- Department of Energy Science, Center for Artificial Atoms, Sungkyunkwan University Suwon-si Gyeonggi-do 16419 Republic of Korea
| | - Jun Hyuk Chang
- School of Chemical and Biological Engineering, Seoul National University Seoul Republic of Korea
| | - Hyekyoung Choi
- Department of Energy Science, Center for Artificial Atoms, Sungkyunkwan University Suwon-si Gyeonggi-do 16419 Republic of Korea
| | - Yong-Hyun Kim
- Graduate School of Nanoscience and Technology, Department of Physics, Korea Advanced Institute of Science and Technology Daejeon 34141 Republic of Korea
| | - Wan Ki Bae
- SKKU Advanced Institute of Nanotechnology (SAINT), Center for Artificial Atoms, Sungkyunkwan University Suwon-si Gyeonggi-do 16419 Republic of Korea
| | - Sohee Jeong
- Department of Energy Science, Center for Artificial Atoms, Sungkyunkwan University Suwon-si Gyeonggi-do 16419 Republic of Korea
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19
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Spirin MG, Brichkin SB, Razumov VF. Influence of Dithiols on Luminescent Properties of Colloidal InP@ZnS Quantum Dots. HIGH ENERGY CHEMISTRY 2019. [DOI: 10.1134/s0018143918060140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Chen Y, Yang Y, Ou F, Liu L, Liu XH, Wang ZJ, Jin L. InP/ZnS QDs exposure induces developmental toxicity in rare minnow (Gobiocypris rarus) embryos. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 60:28-36. [PMID: 29655014 DOI: 10.1016/j.etap.2018.04.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 04/03/2018] [Accepted: 04/04/2018] [Indexed: 06/08/2023]
Abstract
We investigated the in vivo toxicity of InP/ZnS quantum dots (QDs) in Chinese rare minnow (Gobiocypris rarus) embryos. The 72 h post-fertilization (hpf) LC50 (median lethal concentration) was 1678.007 nmol/L. Rare minnows exposed to InP/ZnS QDs exhibited decreased spontaneous movement, decreased survival and hatchability rates, and an increased malformation rate. Pericardial edema, spinal curvature, bent tails and vitelline cysts were observed. Embryonic Wnt8a and Mstn mRNA levels were significantly up-regulated after InP/ZnS QDs treatment at 48 hpf (200 nmol/L) (p < 0.05). The superoxide dismutase (SOD) activity and malondialdehyde (MDA) levels at 96 hpf (800 nmol/L) had an increasing trend. Hsp70 mRNA expression was significantly changed at 48 hpf (200 nmol/L), but compared with the blank control, the different InP/ZnS QDs treatments did not significantly change the Olive tail moments (p > 0.05). Thus, InP/ZnS QDs caused teratogenic effects and death during the development of Chinese rare minnow embryos, but InP/ZnS QDs did not cause significant genetic toxicity during Chinese rare minnow development.
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Affiliation(s)
- Yao Chen
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University School of Life Sciences, Chongqing 400715, China.
| | - Yang Yang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University School of Life Sciences, Chongqing 400715, China
| | - Fang Ou
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University School of Life Sciences, Chongqing 400715, China
| | - Li Liu
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University School of Life Sciences, Chongqing 400715, China
| | - Xiao-Hong Liu
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University School of Life Sciences, Chongqing 400715, China
| | - Zhi-Jian Wang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University School of Life Sciences, Chongqing 400715, China
| | - Li Jin
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University School of Life Sciences, Chongqing 400715, China.
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21
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Laufersky G, Bradley S, Frécaut E, Lein M, Nann T. Unraveling aminophosphine redox mechanisms for glovebox-free InP quantum dot syntheses. NANOSCALE 2018; 10:8752-8762. [PMID: 29708260 DOI: 10.1039/c8nr01286e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The synthesis of colloidal indium phosphide quantum dots (InP QDs) has always been plagued by difficulties arising from limited P3- sources. Being effectively restricted to the highly pyrophoric tris(trimethylsilyl) phosphine (TMS3P) creates complications for the average chemist and presents a significant risk for industrially scaled reactions. The adaptation of tris(dialkylamino) phosphines for these syntheses has garnered attention, as these new phosphines are much safer and can generate nanoparticles with competitive photoluminescence properties to those from (TMS)3P routes. Until now, the reaction mechanics of this precursor were elusive due to many experimental optimizations, such as the inclusion of a high concentration of zinc salts, being atypical of previous InP syntheses. Herein, we utilize density functional theory calculations to outline a logical reaction mechanism. The aminophosphine precursor is found to require activation by a zinc halide before undergoing a disproportionation reaction to self-reduce this P(iii) material to a P(-iii) source. We use this understanding to adapt this precursor for a two-pot nanoparticle synthesis in a noncoordinating solvent outside of glovebox conditions. This allowed us to generate spherical InP/ZnS nanoparticles possessing fluorescence quantum yields >55% and lifetimes as fast as 48 ns, with tunable emission according to varying zinc halide acidity. The development of high quality and efficient InP QDs with this safer aminophosphine in simple Schlenk environments will enable a broader range of researchers to synthesize these nontoxic materials for a variety of high-value applications.
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Affiliation(s)
- Geoffry Laufersky
- School of Chemical and Physical Sciences (SCPS), Victoria University of Wellington, New Zealand
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22
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Spirin MG, Trepalin VV, Brichkin SB, Razumov VF. Influence of amines and alkanethiols on the spectral and luminescent properties of InP@ZnS colloidal quantum dots. HIGH ENERGY CHEMISTRY 2018. [DOI: 10.1134/s0018143918010137] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Naz H, Ali RN, Liu Q, Yang S, Xiang B. Niobium doped zinc oxide nanorods as an electron transport layer for high-performance inverted polymer solar cells. J Colloid Interface Sci 2018; 512:548-554. [DOI: 10.1016/j.jcis.2017.10.041] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 10/10/2017] [Accepted: 10/11/2017] [Indexed: 12/23/2022]
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Chen PE, Anderson NC, Norman ZM, Owen JS. Tight Binding of Carboxylate, Phosphonate, and Carbamate Anions to Stoichiometric CdSe Nanocrystals. J Am Chem Soc 2017; 139:3227-3236. [DOI: 10.1021/jacs.6b13234] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peter E. Chen
- Department of Chemistry, Columbia University, 3000 Broadway, MC 3121, New York, New York 10027, United States
| | - Nicholas C. Anderson
- Department of Chemistry, Columbia University, 3000 Broadway, MC 3121, New York, New York 10027, United States
| | - Zachariah M. Norman
- Department of Chemistry, Columbia University, 3000 Broadway, MC 3121, New York, New York 10027, United States
| | - Jonathan S. Owen
- Department of Chemistry, Columbia University, 3000 Broadway, MC 3121, New York, New York 10027, United States
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Brichkin SB, Spirin MG, Razumov VF. Influence of gold nanoparticles on nonradiative energy transfer in nanoclusters of colloidal quantum dots InP@ZnS. HIGH ENERGY CHEMISTRY 2016. [DOI: 10.1134/s0018143916060047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Continuous injection synthesis of indium arsenide quantum dots emissive in the short-wavelength infrared. Nat Commun 2016; 7:12749. [PMID: 27834371 PMCID: PMC5114595 DOI: 10.1038/ncomms12749] [Citation(s) in RCA: 131] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 07/29/2016] [Indexed: 12/25/2022] Open
Abstract
With the emergence of applications based on short-wavelength infrared light, indium arsenide quantum dots are promising candidates to address existing shortcomings of other infrared-emissive nanomaterials. However, III–V quantum dots have historically struggled to match the high-quality optical properties of II–VI quantum dots. Here we present an extensive investigation of the kinetics that govern indium arsenide nanocrystal growth. Based on these insights, we design a synthesis of large indium arsenide quantum dots with narrow emission linewidths. We further synthesize indium arsenide-based core-shell-shell nanocrystals with quantum yields up to 82% and improved photo- and long-term storage stability. We then demonstrate non-invasive through-skull fluorescence imaging of the brain vasculature of murine models, and show that our probes exhibit 2–3 orders of magnitude higher quantum yields than commonly employed infrared emitters across the entire infrared camera sensitivity range. We anticipate that these probes will not only enable new biomedical imaging applications, but also improved infrared nanocrystal-LEDs and photon-upconversion technology. Indium arsenide quantum dots are promising materials for short-wavelength infrared emissive applications. Here, the authors investigate the kinetics of indium arsenide nanocrystal growth and design large quantum dots with narrow emission wavelengths which can be used for through-skull fluorescence imaging.
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Vatansever F, Hamblin MR. Surface-initiated ring-opening metathesis polymerization (SI-ROMP) to attach a tethered organic corona onto CdSe/ZnS core/shell quantum dots. JOURNAL OF NANOPARTICLE RESEARCH : AN INTERDISCIPLINARY FORUM FOR NANOSCALE SCIENCE AND TECHNOLOGY 2016; 18:302. [PMID: 28360819 PMCID: PMC5367471 DOI: 10.1007/s11051-016-3328-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 01/05/2016] [Indexed: 06/07/2023]
Abstract
Core-shell CdSe/ZnS quantum dots (QDs) are useful as tunable photostable fluorophores for multiple applications in industry, biology, and medicine. However, to achieve the optimum optical properties, the surface of the QDs must be passivated to remove charged sites that might bind extraneous substances and allow aggregation. Here we describe a method of growing an organic polymer corona onto the QD surface using the bottom-up approach of surface-initiated ring-opening metathesis polymerization (SI-ROMP) with Grubbs catalyst. CdSe/ZnS QDs were first coated with mercaptopropionic acid by displacing the original trioctylphosphine oxide layer, and then reacted with 7-octenyl dimethyl chlorosilane. The resulting octenyl double bonds allowed the attachment of ruthenium alkylidene groups as a catalyst. A subsequent metathesis reaction with strained bicyclic monomers (norbornene-dicarbonyl chloride (NDC), and a mixture of NDC and norbornenylethylisobutyl-polyhedral oligomeric silsesquioxane (norbornoPOSS)) allowed the construction of tethered organic homo-polymer or co-polymer layers onto the QD. Compounds were characterized by FT-IR, 1H-NMR, X-ray photoelectron spectroscopy, differential scanning calorimetry, and transmission electron microscopy. Atomic force microscopy showed that the coated QDs were separate and non-aggregated with a range of diameter of 48-53 nm.
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Affiliation(s)
- Fatma Vatansever
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA. Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA. Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA. Harvard-MIT Division of Health Sciences and Technology, Boston, MA 02139, USA
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28
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Reiss P, Carrière M, Lincheneau C, Vaure L, Tamang S. Synthesis of Semiconductor Nanocrystals, Focusing on Nontoxic and Earth-Abundant Materials. Chem Rev 2016; 116:10731-819. [DOI: 10.1021/acs.chemrev.6b00116] [Citation(s) in RCA: 382] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Peter Reiss
- Université Grenoble Alpes, INAC-SyMMES, F-38054 Grenoble Cedex 9, France
- CEA, INAC-SyMMES-STEP/LEMOH, 17 rue des Martyrs, F-38054 Grenoble Cedex 9, France
- CNRS, SPrAM, F-38054 Grenoble Cedex 9, France
| | - Marie Carrière
- Université Grenoble Alpes, INAC-SyMMES, F-38054 Grenoble Cedex 9, France
- CEA, INAC-SyMMES-CIBEST/LAN, 17 rue des Martyrs, F-38054 Grenoble Cedex 9, France
| | - Christophe Lincheneau
- Université Grenoble Alpes, INAC-SyMMES, F-38054 Grenoble Cedex 9, France
- CEA, INAC-SyMMES-STEP/LEMOH, 17 rue des Martyrs, F-38054 Grenoble Cedex 9, France
- CNRS, SPrAM, F-38054 Grenoble Cedex 9, France
| | - Louis Vaure
- Université Grenoble Alpes, INAC-SyMMES, F-38054 Grenoble Cedex 9, France
- CEA, INAC-SyMMES-STEP/LEMOH, 17 rue des Martyrs, F-38054 Grenoble Cedex 9, France
- CNRS, SPrAM, F-38054 Grenoble Cedex 9, France
| | - Sudarsan Tamang
- Department
of Chemistry, Sikkim University, Sikkim 737102, India
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29
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Sugimoto H, Fujii M, Imakita K. Silicon nanocrystal-noble metal hybrid nanoparticles. NANOSCALE 2016; 8:10956-10962. [PMID: 27121127 DOI: 10.1039/c6nr01747a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report a novel and facile self-limiting synthesis route of silicon nanocrystal (Si NC)-based colloidally stable semiconductor-metal (gold, silver and platinum) hybrid nanoparticles (NPs). For the formation of hybrid NPs, we employ ligand-free colloidal Si NCs with heavily boron (B) and phosphorus (P) doped shells. By simply mixing B and P codoped colloidal Si NCs with metal salts, hybrid NPs consisting of metal cores and Si NC shells are spontaneously formed. We demonstrate the synthesis of highly uniform and size controllable hybrid NPs. It is shown that codoped Si NCs act as a reducing agent for metal salts and also as a protecting layer to stop metal NP growth. The process is thus self-limiting. The development of a variety of Si NC-based hybrid NPs is a promising first step for the design of biocompatible multifunctional NPs with broad material choices for biosensing, bioimaging and solar energy conversion.
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Affiliation(s)
- H Sugimoto
- Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan.
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30
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Stein JL, Mader EA, Cossairt BM. Luminescent InP Quantum Dots with Tunable Emission by Post-Synthetic Modification with Lewis Acids. J Phys Chem Lett 2016; 7:1315-20. [PMID: 26999375 DOI: 10.1021/acs.jpclett.6b00177] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
We demonstrate the ability of M(2+) Lewis acids (M = Cd, Zn) to dramatically enhance the photoluminescence quantum yield (PL QY) of InP quantum dots. The addition of cadmium and zinc is additionally found to red- and blue-shift, respectively, the lowest energy absorption and emission of InP quantum dots while maintaining particle size. This treatment results in a facile strategy to post-synthetically tune the luminescence color in these materials. Optical and structural characterization (XRD, TEM, XAS, ICP) have led us to identify the primary mechanism of PL turn-on as surface passivation of phosphorus dangling bonds, affording PL QYs up to 49% without the growth of a type I shell or the addition of HF. This route to PL enhancement and color tuning may prove useful as a standalone treatment or as a complement to shelling strategies.
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Affiliation(s)
- Jennifer L Stein
- Department of Chemistry, University of Washington , Box 351700, Bagley Hall, Seattle, Washington 98195-1700, United States
| | - Elizabeth A Mader
- Department of Chemistry, Yale University , P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Brandi M Cossairt
- Department of Chemistry, University of Washington , Box 351700, Bagley Hall, Seattle, Washington 98195-1700, United States
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31
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Pathak TK, Kumar A, Swart CW, Swart HC, Kroon RE. Effect of fuel content on luminescence and antibacterial properties of zinc oxide nanocrystalline powders synthesized by the combustion method. RSC Adv 2016. [DOI: 10.1039/c6ra22341a] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanoscale ZnO powders were synthesized via the combustion method using zinc nitrate hexahydrate as the source (oxidant) material and urea, and glycine or citric acid monohydrate as fuels.
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Affiliation(s)
- Trilok K. Pathak
- Department of Physics
- University of the Free State
- Bloemfontein
- South Africa
| | - Ashwini Kumar
- Department of Physics
- University of the Free State
- Bloemfontein
- South Africa
| | - C. W. Swart
- Department of Microbial
- Biochemical and Food Biotechnology
- University of the Free State
- Bloemfontein
- South Africa
| | - H. C. Swart
- Department of Physics
- University of the Free State
- Bloemfontein
- South Africa
| | - R. E. Kroon
- Department of Physics
- University of the Free State
- Bloemfontein
- South Africa
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32
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Grim JQ, Manna L, Moreels I. A sustainable future for photonic colloidal nanocrystals. Chem Soc Rev 2015; 44:5897-914. [PMID: 26084788 DOI: 10.1039/c5cs00285k] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Colloidal nanocrystals - produced in a growing variety of shapes, sizes and compositions - are rapidly developing into a new generation of photonic materials, spanning light emitting as well as energy harvesting applications. Precise tailoring of their optoelectronic properties enables them to satisfy disparate application-specific requirements. However, the presence of toxic heavy metals such as cadmium and lead in some of the most mature nanocrystals is a serious drawback which may ultimately preclude their use in consumer applications. Although the pursuit of non-toxic alternatives has occurred in parallel to the well-developed Cd- and Pb-based nanocrystals, synthetic challenges have, until recently, curbed progress. In this review, we highlight recent advances in the development of heavy-metal-free nanocrystals within the context of specific photonic applications. We also describe strategies to transfer some of the advantageous nanocrystal features such as shape control to non-toxic materials. Finally, we present recent developments that have the potential to make substantial impacts on the quest to attain a balance between performance and sustainability in photonics.
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Affiliation(s)
- Joel Q Grim
- Nanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, IT-16163 Genova, Italy.
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33
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Franke D, Harris DK, Xie L, Jensen KF, Bawendi MG. The Unexpected Influence of Precursor Conversion Rate in the Synthesis of III-V Quantum Dots. Angew Chem Int Ed Engl 2015; 54:14299-303. [PMID: 26437711 DOI: 10.1002/anie.201505972] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 07/31/2015] [Indexed: 11/07/2022]
Abstract
Control of quantum dot (QD) precursor chemistry has been expected to help improve the size control and uniformity of III-V QDs such as indium phosphide and indium arsenide. Indeed, experimental results for other QD systems are consistent with the theoretical prediction that the rate of precursor conversion is an important factor controlling QD size and size distribution. We synthesized and characterized the reactivity of a variety of group-V precursors in order to determine if precursor chemistry could be used to improve the quality of III-V QDs. Despite slowing down precursor conversion rate by multiple orders of magnitude, the less reactive precursors do not yield the expected increase in size and improvement in size distribution. This result disproves the widely accepted explanation for the shortcoming of current III-V QD syntheses and points to the need for a new generalizable theoretical picture for the mechanism of QD formation and growth.
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Affiliation(s)
- Daniel Franke
- Department of Chemistry, Massachusetts Institute Of Technology, 77 Massachusetts Avenue, 02139 Cambridge, MA (USA)
| | - Daniel K Harris
- Department of Chemistry, Massachusetts Institute Of Technology, 77 Massachusetts Avenue, 02139 Cambridge, MA (USA)
| | - Lisi Xie
- Department of Chemical Engineering, Massachusetts Institute Of Technology, 77 Massachusetts Avenue, 02139 Cambridge, MA (USA)
| | - Klavs F Jensen
- Department of Chemical Engineering, Massachusetts Institute Of Technology, 77 Massachusetts Avenue, 02139 Cambridge, MA (USA)
| | - Moungi G Bawendi
- Department of Chemistry, Massachusetts Institute Of Technology, 77 Massachusetts Avenue, 02139 Cambridge, MA (USA).
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34
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Franke D, Harris DK, Xie L, Jensen KF, Bawendi MG. The Unexpected Influence of Precursor Conversion Rate in the Synthesis of III-V Quantum Dots. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505972] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Brichkin SB. Synthesis and properties of colloidal indium phosphide quantum dots. COLLOID JOURNAL 2015. [DOI: 10.1134/s1061933x15040043] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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36
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Abstract
The synthesis and characterization of crystalline colloidal zinc phosphide quantum dots with observable excitonic transitions ranging between 424–535 nm (2.3–2.9 eV) are reported.
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37
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Rao US, Srinivas G, Rao TP. Influence of Precursors on Morphology and Spectroscopic Properties of ZnO Nanoparticles. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.mspro.2015.06.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
Chalcogenide semiconductor nanoparticles and their self-assembly structures have become the most explored group of semiconductor nanomaterials due to the interesting physics involved in quantum confinement, surface chemistry and variety of applications. In the last couple of decades, facile routes for their synthesis and strategies for controlling the size, shape and morphology have been reported. In the present review, synthesis strategies of size and shape controlled nanoparticles belonging to II-VI group of semiconductor chalcogenides are presented and each method for preparation of nanoparticles is critically analysed. Role of various factors that affect the nucleation and growth of nanoparticles is discussed at length. Nanoparticles and self-assemblies of CdSe, CdTe, HgTe and ZnSe are synthesized using new and facile single molecular precursor based noble route by our group that uses non-pyrophoric, low temperature and non-toxic chemicals, their properties and synthesis scheme are discussed as future development in this field. Some recent applications of chalcogenides QDs in the fields of solar cell, optical fibre amplifiers, biosensing and bo-imaging are discussed and reviewed.
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39
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Pu F, Ren J, Qu X. Nucleic acids and smart materials: advanced building blocks for logic systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5742-57. [PMID: 25042025 DOI: 10.1002/adma.201401617] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Indexed: 05/11/2023]
Abstract
Logic gates can convert input signals into a defined output signal, which is the fundamental basis of computing. Inspired by molecular switching from one state to another under an external stimulus, molecular logic gates are explored extensively and recognized as an alternative to traditional silicon-based computing. Among various building blocks of molecular logic gates, nucleic acid attracts special attention owing to its specific recognition abilities and structural features. Functional materials with unique physical and chemical properties offer significant advantages and are used in many fields. The integration of nucleic acids and functional materials is expected to bring about several new phenomena. In this Progress Report, recent progress in the construction of logic gates by combining the properties of a range of smart materials with nucleic acids is introduced. According to the structural characteristics and composition, functional materials are categorized into three classes: polymers, noble-metal nanomaterials, and inorganic nanomaterials. Furthermore, the unsolved problems and future challenges in the construction of logic gates are discussed. It is hoped that broader interests in introducing new smart materials into the field are inspired and tangible applications for these constructs are found.
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Affiliation(s)
- Fang Pu
- State Key Laboratory of Rare Earth Resource Utilization and Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
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40
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Liu X, Fechler N, Antonietti M. Salt melt synthesis of ceramics, semiconductors and carbon nanostructures. Chem Soc Rev 2013; 42:8237-65. [DOI: 10.1039/c3cs60159e] [Citation(s) in RCA: 417] [Impact Index Per Article: 37.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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41
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Wang F, Liu X, Willner I. Integration of photoswitchable proteins, photosynthetic reaction centers and semiconductor/biomolecule hybrids with electrode supports for optobioelectronic applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:349-377. [PMID: 22933337 DOI: 10.1002/adma.201201772] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Indexed: 06/01/2023]
Abstract
Light-triggered biological processes provide the principles for the development of man-made optobioelectronic systems. This Review addresses three recently developed topics in the area of optobioelectronics, while addressing the potential applications of these systems. The topics discussed include: (i) the reversible photoswitching of the bioelectrocatalytic functions of redox proteins by the modification of proteins with photoisomerizable units or by the integration of proteins with photoisomerizable environments; (ii) the integration of natural photosynthetic reaction centers with electrodes and the construction of photobioelectrochemical cells and photobiofuel cells; and (iii) the synthesis of biomolecule/semiconductor quantum dots hybrid systems and their immobilization on electrodes to yield photobioelectrochemical and photobiofuel cell elements. The fundamental challenge in the tailoring of optobioelectronic systems is the development of means to electrically contact photoactive biomolecular assemblies with the electrode supports. Different methods to establish electrical communication between the photoactive biomolecular assemblies and electrodes are discussed. These include the nanoscale engineering of the biomolecular nanostructures on surfaces, the development of photoactive molecular wires and the coupling of photoinduced electron transfer reactions with the redox functions of proteins. The different possible applications of optobioelectronic systems are discussed, including their use as photosensors, the design of biosensors, and the construction of solar energy conversion and storage systems.
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Affiliation(s)
- Fuan Wang
- Institute of Chemistry, Center of Nanoscience and Nanotechnology, The Minerva Center for Biohybrid Complex Systems, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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42
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Shi X, Tu Y, Liu X, Yeung ES, Gai H. Photobleaching of quantum dots by non-resonant light. Phys Chem Chem Phys 2013; 15:3130-2. [DOI: 10.1039/c3cp43668c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Affiliation(s)
- Brandon J. Beberwyck
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California
94720, United States
| | - A. Paul Alivisatos
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California
94720, United States
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44
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Gupta AK, Kripal R. EPR and photoluminescence properties of Mn2+ doped CdS nanoparticles synthesized via co-precipitation method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 96:626-631. [PMID: 22868335 DOI: 10.1016/j.saa.2012.07.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 06/30/2012] [Accepted: 07/10/2012] [Indexed: 06/01/2023]
Abstract
The structural properties of Mn doped CdS (Mn:CdS) nanoparticles (NPs) are studied using X-ray diffraction (XRD), Transmission electron microscopy (TEM), Ultraviolet-visible (UV-vis), Photoluminescence (PL), Raman and Electron paramagnetic resonance (EPR) spectroscopy. XRD analysis shows the nanostructure with 2-4 nm of average crystallite size. The planes (110), (103) and (112) in XRD pattern distinguish the wurtzite structure of the Mn:CdS NPs. The intensity of the plane (102) increases as the doping concentration of Mn(2+) increases. UV-vis absorption spectra show blue shift as compared to bulk CdS. The optical band gap energy of Mn(2+) (0, 0.35, 0.70 and 1.35 at.%) doped CdS NPs corresponding to absorption edge are found to be 5.29, 5.28, 5.25 and 5.21 eV, respectively. The intensity of luminescence is changing with the concentration of Mn(2+) doped in CdS NPs. Raman spectra show blue shift in fundamental optical phonon mode (1LO) as well as second optical phonon mode (2LO) as compared to bulk CdS. The intensity ratio of the 2LO to 1LO modes slightly decreases as Mn(2+) concentration increases. EPR shows the existence of Mn(2+) with different local structures in CdS nanoparticles. The values of spectroscopic splitting factor (g) and hyperfine interaction constant (A) decrease as Mn(2+) concentration increases in CdS NPs.
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Affiliation(s)
- Atul K Gupta
- EPR Laboratory, Department of Physics, University of Allahabad, Allahabad 211002, India.
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45
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RAO BSRINIVASA, REDDY VRAJAGOPAL, KUMAR BRAJESH, RAO TSUBBA. SYNTHESIS AND CHARACTERIZATION OF NICKEL DOPED CdS NANOPARTICLES. INTERNATIONAL JOURNAL OF NANOSCIENCE 2012. [DOI: 10.1142/s0219581x12400066] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In the present work, conventional chemical co-precipitation method was employed for the preparation of Nickel (2, 4, 6, 8 and 10 at.% of Ni ) doped CdS nanoparticles. The crystallite size and lattice parameters for each sample are determined from X-ray diffraction (XRD) analysis. From XRD patterns the broadening of the diffraction peaks indicates the nanostructure nature of the samples. Surface morphology of the samples was studied by scanning electron microscope (SEM). UV-Visible absorption spectra for prepared samples are monitored for the optical properties of quantum sized particles. All nanoparticles formed lie in the size quantization regime and exhibit good crystallinity. Optical properties have been observed via UV-Vis spectroscopy and Photoluminescence spectra (PL) spectra. Ni doping in CdS is found to modify the luminescence properties by creating shallow acceptor states.
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Affiliation(s)
- B. SRINIVASA RAO
- Department of Physics, Sri Venkateswara University, Tirupati 517502, A. P, India
| | - V. RAJAGOPAL REDDY
- Department of Physics, Sri Venkateswara University, Tirupati 517502, A. P, India
| | - B. RAJESH KUMAR
- Materials Research Lab, Department of Physics, S. K. University, Anantapur 515003, A. P, India
| | - T. SUBBA RAO
- Materials Research Lab, Department of Physics, S. K. University, Anantapur 515003, A. P, India
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46
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Talam S, Karumuri SR, Gunnam N. Synthesis, Characterization, and Spectroscopic Properties of ZnO Nanoparticles. ACTA ACUST UNITED AC 2012. [DOI: 10.5402/2012/372505] [Citation(s) in RCA: 256] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
ZnO nanoparticles have been synthesized by precipitation method from Zinc nitrate. The powder was characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, selected-area electron diffraction, UV-vis optical absorption, and photoluminescence spectroscopy analyses. XRD patterns showed that ZnO nanoparticles have hexagonal unit cell structure. SEM and TEM pictures reveal the morphology and particle size of prepared ZnO nanoparticles. The UV-vis absorption spectrum shows an absorption band at 355 nm due to ZnO nanoparticles. The photoluminescence spectrum exhibits two emission peaks one at 392 nm corresponding to band gap excitonic emission and another located at 520 nm due to the presence of singly ionized oxygen vacancies. The synthesis method has potential for application in manufacturing units due to ease processing and more economical reagents.
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Affiliation(s)
- Satyanarayana Talam
- Department of Electronics and Instrumentation Engineering, Lakireddy Bali Reddy College of Engineering (Autonomous), Mylavaram 521230, India
| | - Srinivasa Rao Karumuri
- Department of Electronics and Instrumentation Engineering, Lakireddy Bali Reddy College of Engineering (Autonomous), Mylavaram 521230, India
| | - Nagarjuna Gunnam
- Department of Chemistry, C.S.T.S. Government Kalasala, Jangareddygudem 534 447, India
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47
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Saha S, Pal S, Sarkar P, Rosa AL, Frauenheim T. A complete set of self-consistent charge density-functional tight-binding parametrization of zinc chalcogenides (ZnX; X=O, S, Se, and Te). J Comput Chem 2012; 33:1165-78. [PMID: 22392924 DOI: 10.1002/jcc.22945] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2011] [Revised: 12/04/2011] [Accepted: 01/08/2012] [Indexed: 01/21/2023]
Abstract
We have developed a complete set of self-consistent charge density-functional tight-binding parameters for ZnX (X = Zn, O, S, Se, Te, Cd, H, C, and N). The transferability of the derived parameters has been tested against Pseudo Potential-Perdew, Burke and Ernzerhof (PP-PBE) calculations and experimental values (whenever available) for corresponding bulk systems (e.g., hexagonal close packing, zinc-blende, and wurtzite(wz)), various kinds of nanostructures (such as nanowires, surfaces, and nanoclusters), and also some small molecular systems. Our results show that the derived parameters reproduce the structural and energetic properties of the above-mentioned systems very well. With the derived parameter set, one can study zinc-chalcogenide nanostructures of relatively large size which was otherwise prohibited by other methods. The Zn-Cd parametrization developed in this article will help in studying large semiconductor hetero-nanostructures of Zn and Cd chalcogenides such as ZnX/CdX core/shell nanoparticles, nanotubes, nanowires, and nanoalloys.
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Affiliation(s)
- Supriya Saha
- Department of Chemistry, Visva-Bharati University, Santiniketan-731235, West Bengal, India
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Joung S, Yoon S, Han CS, Kim Y, Jeong S. Facile synthesis of uniform large-sized InP nanocrystal quantum dots using tris(tert-butyldimethylsilyl)phosphine. NANOSCALE RESEARCH LETTERS 2012; 7:93. [PMID: 22289352 PMCID: PMC3292828 DOI: 10.1186/1556-276x-7-93] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Accepted: 01/30/2012] [Indexed: 05/05/2023]
Abstract
Colloidal III-V semiconductor nanocrystal quantum dots [NQDs] have attracted interest because they have reduced toxicity compared with II-VI compounds. However, the study and application of III-V semiconductor nanocrystals are limited by difficulties in their synthesis. In particular, it is difficult to control nucleation because the molecular bonds in III-V semiconductors are highly covalent. A synthetic approach of InP NQDs was presented using newly synthesized organometallic phosphorus [P] precursors with different functional moieties while preserving the P-Si bond. Introducing bulky side chains in our study improved the stability while facilitating InP formation with strong confinement at a readily low temperature regime (210°C to 300°C). Further shell coating with ZnS resulted in highly luminescent core-shell materials. The design and synthesis of P precursors for high-quality InP NQDs were conducted for the first time, and we were able to control the nucleation by varying the reactivity of P precursors, therefore achieving uniform large-sized InP NQDs. This opens the way for the large-scale production of high-quality Cd-free nanocrystal quantum dots.
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Affiliation(s)
- SoMyoung Joung
- Nanomechanical Systems Research Division, Korea Institute of Machinery and Materials, Daejeon 305-343, Republic of Korea
- Department of Chemistry, Chungbuk National University, 52 Naesudong-ro, Heungdeok-gu, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Sungwoo Yoon
- Department of Chemistry, Chungbuk National University, 52 Naesudong-ro, Heungdeok-gu, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Chang-Soo Han
- School of Mechanical Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, Republic of Korea
| | - Youngjo Kim
- Department of Chemistry, Chungbuk National University, 52 Naesudong-ro, Heungdeok-gu, Cheongju, Chungbuk 361-763, Republic of Korea
| | - Sohee Jeong
- Nanomechanical Systems Research Division, Korea Institute of Machinery and Materials, Daejeon 305-343, Republic of Korea
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Kornienko A, Moore BF, Kumar GA, Tan MC, Riman RE, Brik MG, Emge TJ, Brennan JG. Highly NIR-emissive lanthanide polyselenides. Inorg Chem 2011; 50:9184-90. [PMID: 21866912 DOI: 10.1021/ic201509v] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ln(SePh)(3) (Ln = Ce, Pr, Nd), prepared by reduction of PhSeSePh with elemental Ln and Hg catalyst, reacts with excess elemental Se to give (py)(11)Ln(7)Se(21)HgSePh, an ellipsoidal polyselenide cluster. The molecular structure contains two square arrays of eight- or nine-coordinate Ln fused at one edge to form a V shape that is also capped on the concave side by a centrally located nine-coordinate (Se(3))pyLn(Se(3)) and on the convex side by a 2-fold disordered SeHgSePh. The central Ln coordinates to selenido, triselenido, and pyridine ligands, while all other Ln coordinate to selenido, diselenido, triselenido, and pyridine ligands. Thermal treatment of the Pr compound at 650 °C gave Pr(2)Se(3) and Pr(3)Se(4). NIR emission studies of the Nd compound show four transitions from the excited-state (4)F(3/2) ion to (4)I(9/2), (4)I(11/2), (4)I(13/2), and (4)I(15/2) states. The (4)F(3/2) ion to (4)I(11/2) transition (1075 nm emission) exhibited 43% quantum efficiency. This is the highest quantum efficiency reported for a 'molecular' Nd compound and leads a group of selenide-based clusters that has shown extraordinary quantum efficiency. In terms of efficiency and concentration, these compounds compare favorably with solid-state materials.
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Affiliation(s)
- Anna Kornienko
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, USA
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Sarkar S, Pal S, Sarkar P, Rosa AL, Frauenheim T. Self-Consistent-Charge Density-Functional Tight-Binding Parameters for Cd–X (X = S, Se, Te) Compounds and Their Interaction with H, O, C, and N. J Chem Theory Comput 2011; 7:2262-76. [DOI: 10.1021/ct200266f] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Sunandan Sarkar
- Department of Chemistry, Visva-Bharati University, Santiniketan- 731235, India
| | - Sougata Pal
- Department of Chemistry, Visva-Bharati University, Santiniketan- 731235, India
- Institute of Theoretical Physics and Astrophysics, University of Kiel, D-24098, Kiel, Germany
| | - Pranab Sarkar
- Department of Chemistry, Visva-Bharati University, Santiniketan- 731235, India
| | - A. L. Rosa
- BCCMS, University of Bremen, Am Fallturm 1, 28359, Bremen, Germany
| | - Th. Frauenheim
- BCCMS, University of Bremen, Am Fallturm 1, 28359, Bremen, Germany
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