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Chen Z, Luo G, Ren J, Wang Q, Zhao X, Wei L, Wang Y, Liu Y, Deng Y, Li S. Recent Advances in and Application of Fluorescent Microspheres for Multiple Nucleic Acid Detection. BIOSENSORS 2024; 14:265. [PMID: 38920569 PMCID: PMC11201543 DOI: 10.3390/bios14060265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 05/17/2024] [Accepted: 05/21/2024] [Indexed: 06/27/2024]
Abstract
Traditional single nucleic acid assays can only detect one target while multiple nucleic acid assays can detect multiple targets simultaneously, providing comprehensive and accurate information. Fluorescent microspheres in multiplexed nucleic acid detection offer high sensitivity, specificity, multiplexing, flexibility, and scalability advantages, enabling precise, real-time results and supporting clinical diagnosis and research. However, multiplexed assays face challenges like complexity, costs, and sample handling issues. The review explores the recent advancements and applications of fluorescent microspheres in multiple nucleic acid detection. It discusses the versatility of fluorescent microspheres in various fields, such as disease diagnosis, drug screening, and personalized medicine. The review highlights the possibility of adjusting the performance of fluorescent microspheres by modifying concentrations and carrier forms, allowing for tailored applications. It emphasizes the potential of fluorescent microsphere technology in revolutionizing nucleic acid detection and advancing health, disease treatment, and medical research.
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Affiliation(s)
- Zhu Chen
- MOE Key Lab of Rare Pediatric Diseases & Hengyang Medical School, University of South China, Hengyang 421001, China; (G.L.); (J.R.); (Q.W.); (X.Z.); (L.W.); (Y.L.); (Y.D.)
- Institute for Future Sciences, University of South China, Changsha 410008, China
| | - Gaoming Luo
- MOE Key Lab of Rare Pediatric Diseases & Hengyang Medical School, University of South China, Hengyang 421001, China; (G.L.); (J.R.); (Q.W.); (X.Z.); (L.W.); (Y.L.); (Y.D.)
- Institute for Future Sciences, University of South China, Changsha 410008, China
- Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology, Hunan Engineering Research Center for Early Diagnosis and Treatment of Liver Cancer, Cancer Research Institute, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Jie Ren
- MOE Key Lab of Rare Pediatric Diseases & Hengyang Medical School, University of South China, Hengyang 421001, China; (G.L.); (J.R.); (Q.W.); (X.Z.); (L.W.); (Y.L.); (Y.D.)
- Institute for Future Sciences, University of South China, Changsha 410008, China
| | - Qixuan Wang
- MOE Key Lab of Rare Pediatric Diseases & Hengyang Medical School, University of South China, Hengyang 421001, China; (G.L.); (J.R.); (Q.W.); (X.Z.); (L.W.); (Y.L.); (Y.D.)
- Institute for Future Sciences, University of South China, Changsha 410008, China
- Hunan Province Key Laboratory of Tumor Cellular & Molecular Pathology, Hunan Engineering Research Center for Early Diagnosis and Treatment of Liver Cancer, Cancer Research Institute, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Xinping Zhao
- MOE Key Lab of Rare Pediatric Diseases & Hengyang Medical School, University of South China, Hengyang 421001, China; (G.L.); (J.R.); (Q.W.); (X.Z.); (L.W.); (Y.L.); (Y.D.)
- Institute for Future Sciences, University of South China, Changsha 410008, China
- Institute of Cytology and Genetics, School of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Linyu Wei
- MOE Key Lab of Rare Pediatric Diseases & Hengyang Medical School, University of South China, Hengyang 421001, China; (G.L.); (J.R.); (Q.W.); (X.Z.); (L.W.); (Y.L.); (Y.D.)
- Institute for Future Sciences, University of South China, Changsha 410008, China
- Institute of Cytology and Genetics, School of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Yue Wang
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou 412007, China;
| | - Yuan Liu
- MOE Key Lab of Rare Pediatric Diseases & Hengyang Medical School, University of South China, Hengyang 421001, China; (G.L.); (J.R.); (Q.W.); (X.Z.); (L.W.); (Y.L.); (Y.D.)
- Institute for Future Sciences, University of South China, Changsha 410008, China
| | - Yan Deng
- MOE Key Lab of Rare Pediatric Diseases & Hengyang Medical School, University of South China, Hengyang 421001, China; (G.L.); (J.R.); (Q.W.); (X.Z.); (L.W.); (Y.L.); (Y.D.)
- Institute for Future Sciences, University of South China, Changsha 410008, China
| | - Song Li
- MOE Key Lab of Rare Pediatric Diseases & Hengyang Medical School, University of South China, Hengyang 421001, China; (G.L.); (J.R.); (Q.W.); (X.Z.); (L.W.); (Y.L.); (Y.D.)
- Institute for Future Sciences, University of South China, Changsha 410008, China
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Yamauchi M, Nakatsukasa K, Kubo N, Yamada H, Masuo S. One-Dimensionally Arranged Quantum-Dot Superstructures Guided by a Supramolecular Polymer Template. Angew Chem Int Ed Engl 2024; 63:e202314329. [PMID: 37985221 DOI: 10.1002/anie.202314329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/01/2023] [Accepted: 11/17/2023] [Indexed: 11/22/2023]
Abstract
Colloidal quantum dots (QDs) exhibit important photophysical properties, such as long-range energy diffusion, miniband formation, and collective photoluminescence, when aggregated into well-defined superstructures, such as three-dimensional (3D) and two-dimensional (2D) superlattices. However, the construction of one-dimensional (1D) QD superstructures, which have a simpler arrangement, is challenging; therefore, the photophysical properties of 1D-arranged QDs have not been studied previously. Herein, we report a versatile strategy to obtain 1D-arranged QDs using a supramolecular polymer (SP) template. The SP is composed of self-assembling cholesterol derivatives containing two amide groups for hydrogen bonding and a carboxyl group as an adhesion moiety on the QDs. Upon mixing the SP and dispersed QDs in low-polarity solvents, the QDs self-adhered to the SP and self-arranged into 1D superstructures through van der Waals interactions between the surface organic ligands of the QDs, as confirmed by transmission electron microscopy. Furthermore, we revealed efficient photoinduced fluorescence resonance energy transfer between the 1D-arranged QDs by an in-depth analysis of the emission spectra and decay curves.
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Affiliation(s)
- Mitsuaki Yamauchi
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
| | - Kanako Nakatsukasa
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuen, Uegahara, Sanda, Hyogo, 669-1330, Japan
| | - Naoki Kubo
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuen, Uegahara, Sanda, Hyogo, 669-1330, Japan
| | - Hiroko Yamada
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
| | - Sadahiro Masuo
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuen, Uegahara, Sanda, Hyogo, 669-1330, Japan
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Hamanaka Y, Okuyama S, Yokoi R, Kuzuya T, Takeda K, Sekine C. Photoexcited Carrier Transfer in CuInS 2 Nanocrystal Assembly by Suppressing Resonant-Energy Transfer. Chemphyschem 2023; 24:e202300029. [PMID: 37547980 DOI: 10.1002/cphc.202300029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/18/2023] [Accepted: 08/02/2023] [Indexed: 08/08/2023]
Abstract
High-density assemblies or superlattice structures composed of colloidal semiconductor nanocrystals have attracted attention as key materials for next-generation photoelectric conversion devices such as quantum-dot solar cells. In these nanocrystal solids, unique transport and optical phenomena occur due to quantum coupling of localized energy states, charge-carrier hopping, and electromagnetic interactions among closely arranged nanocrystals. In particular, the photoexcited carrier dynamics in nanocrystal solids is important because it significantly affects various device parameters. In this study, we report the photoexcited carrier dynamics in a solid film of CuInS2 nanocrystals, which is one of the potential nontoxic substitutes with Cd- and Pb-free compositions. Meanwhile, these subjects have been extensively studied in nanocrystal solids formed by CdSe and PbS systems. A carrier-hopping mechanism was confirmed using temperature-dependent photoluminescence spectroscopy, which yielded a typical value of the photoexcited carrier-transfer rate of (2.2±0.6)×107 s-1 by suppressing the influence of the excitation-energy transfer.
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Affiliation(s)
- Yasushi Hamanaka
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, 466-8555, Japan
| | - Satoshi Okuyama
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, 466-8555, Japan
| | - Rin Yokoi
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, 466-8555, Japan
| | - Toshihiro Kuzuya
- College of Design and Manufacturing Technology, Muroran Institute of Technology, Mizumoto-cho, Muroran, 050-8585, Japan
| | - Keiki Takeda
- College of Design and Manufacturing Technology, Muroran Institute of Technology, Mizumoto-cho, Muroran, 050-8585, Japan
| | - Chihiro Sekine
- College of Design and Manufacturing Technology, Muroran Institute of Technology, Mizumoto-cho, Muroran, 050-8585, Japan
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Wu M, Liu T, Yin C, Jiang X, Sun Q, Gao L, Niu N, Chen L, Gang H. Portable smartphone-assisted RGB-dependent ratiometric sensing platform for the detection of tetrachloro-p-benzoquinone in river samples. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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Marino E, Rosen DJ, Yang S, Tsai EHR, Murray CB. Temperature-Controlled Reversible Formation and Phase Transformation of 3D Nanocrystal Superlattices Through In Situ Small-Angle X-ray Scattering. NANO LETTERS 2023; 23:4250-4257. [PMID: 37184728 DOI: 10.1021/acs.nanolett.3c00299] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
For decades, the spontaneous organization of nanocrystals into superlattices has captivated the scientific community. However, achieving direct control over the formation of the superlattice and its phase transformations has proven to be a grand challenge, often resulting in the generation of multiple symmetries under the same experimental conditions. Here, we achieve direct control over the formation of the superlattice and its phase transformations by modulating the thermal energy of a nanocrystal dispersion without relying on solvent evaporation. We follow the temperature-dependent dynamics of the self-assembly process using synchrotron-based small-angle X-ray scattering. When cooled below -24.5 °C, lead sulfide nanocrystals form micrometer-sized three-dimensional phase-pure body-centered cubic superlattices. When cooled below -35.1 °C, these superlattices undergo a collective diffusionless phase transformation that yields denser body-centered tetragonal phases. These structural changes can be reversed by increasing the temperature of the dispersion and may lead to the direct modulation of the optical properties of these artificial solids.
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Affiliation(s)
- Emanuele Marino
- Department of Chemistry, University of Pennsylvania, 231 S. 34th Street, Philadelphia, Pennslvania 19104 United States
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy
| | - Daniel J Rosen
- Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, Pennsylvania 19104 United States
| | - Shengsong Yang
- Department of Chemistry, University of Pennsylvania, 231 S. 34th Street, Philadelphia, Pennslvania 19104 United States
| | - Esther H R Tsai
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Building 735, Upton, New York 11973-5000, United States
| | - Christopher B Murray
- Department of Chemistry, University of Pennsylvania, 231 S. 34th Street, Philadelphia, Pennslvania 19104 United States
- Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, Pennsylvania 19104 United States
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Yuan R, Liu P, Wang X, Zhou J. Interlayer Sodium Plating/Stripping in Van der Waals-Layered Quantum Dot Superstructure. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2300919. [PMID: 36967559 DOI: 10.1002/smll.202300919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Assembling quantum dots (QDs) into van der Waals (vdW)-layered superstructure holds great promise for the development of high-energy-density metal anode. However, designing such a superstructure remains to be challenging. Here, a chemical-vapor Oriented Attachment (OA) growth strategy is proposed to achieve the synthesis of vdW-layered carbon/QDs hybrid superlattice nanosheets (Fe7 S8 @CNS) with a large vdW gap of 3 nm. The Fe7 S8 @CNS superstructure is assembled by carbon-coated Fe7 S8 (Fe7 S8 @C) QDs as building blocks. Interestingly, the Fe7 S8 @CNS exhibits two kinds of edge dislocations similar to traditional atom-layered materials, suggesting that Fe7 S8 @C QDs exhibit quasi-atomic growth behavior during the OA process. More interestingly, when used as host materials for sodium metal anodes, the Fe7 S8 @CNS shows the interlayer sodium plating/stripping behavior, which well suppresses Na dendrite growth. As a result, the cell with Fe7 S8 @CNS anode can keep stable cycling for 1000 h with a high Coulombic efficiency (CE) of ≈99.5% at 3.0 mA cm-2 and 3.0 mAh cm-2 . Noticeably, the Na@Fe7 S8 @CNS||Na3 V2 (PO4 )3 full cells can attain a capacity of 88.8 mAh g-1 with a retention of 97% after 1000 cycles at 1.0 A g-1 (≈8 C), showing excellent cycle stability for practical applications. This work enriches the vdW-layered QDs superstructure family and their application toward energy storage.
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Affiliation(s)
- Ruole Yuan
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Peng Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Xiaomei Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Jisheng Zhou
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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Kim S, Byun YY, Lee I, Cho W, Kim G, Culebras M, Jang J, Cho C. Organic Thermoelectric Nanocomposites Assembled via Spraying Layer-by-Layer Method. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13050866. [PMID: 36903743 PMCID: PMC10005322 DOI: 10.3390/nano13050866] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/18/2023] [Accepted: 02/24/2023] [Indexed: 05/31/2023]
Abstract
Thermoelectric (TE) materials have been considered as a promising energy harvesting technology for sustainably providing power to electronic devices. In particular, organic-based TE materials that consist of conducting polymers and carbon nanofillers make a large variety of applications. In this work, we develop organic TE nanocomposites via successive spraying of intrinsically conductive polymers such as polyaniline (PANi) and poly(3,4-ethylenedioxy- thiophene):poly(styrenesulfonate) (PEDOT:PSS) and carbon nanofillers, and single-walled carbon nanotubes (SWNT). It is found that the growth rate of the layer-by-layer (LbL) thin films, which comprise a PANi/SWNT-PEDOT:PSS repeating sequence, made by the spraying method is greater than that of the same ones assembled by traditional dip coating. The surface structure of multilayer thin films constructed by the spraying approach show excellent coverage of highly networked individual and bundled SWNT, which is similarly to what is observed when carbon nanotubes-based LbL assemblies are formed by classic dipping. The multilayer thin films via the spray-assisted LbL process exhibit significantly improved TE performances. A 20-bilayer PANi/SWNT-PEDOT:PSS thin film (~90 nm thick) yields an electrical conductivity of 14.3 S/cm and Seebeck coefficient of 76 μV/K. These two values translate to a power factor of 8.2 μW/m·K2, which is 9 times as large as the same films fabricated by a classic immersion process. We believe that this LbL spraying method will open up many opportunities in developing multifunctional thin films for large-scaled industrial use due to rapid processing and the ease with which it is applied.
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Affiliation(s)
- Seojin Kim
- Department of Carbon Convergence Engineering, College of Engineering, Wonkwang University, Iksan 54538, Republic of Korea
| | - You Young Byun
- Department of Carbon Convergence Engineering, College of Engineering, Wonkwang University, Iksan 54538, Republic of Korea
| | - InYoung Lee
- Department of Carbon Convergence Engineering, College of Engineering, Wonkwang University, Iksan 54538, Republic of Korea
| | - Woohyeon Cho
- Core Facility for Supporting Analysis & Imaging of Biomedical Materials, Wonkwang University, Iksan 54538, Republic of Korea
| | - Gyungho Kim
- DMT Company, 60, Wanggungnonggong Danji-Gil, Wanggung-Myeon, Iksan 54576, Republic of Korea
| | - Mario Culebras
- Institute of Materials Science (ICMUV), University of Valencia, 46980 Paterna, Spain
| | - Junho Jang
- Wearable Platform Materials Technology Center (WMC), Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Chungyeon Cho
- Department of Carbon Convergence Engineering, College of Engineering, Wonkwang University, Iksan 54538, Republic of Korea
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Piryatinski YP, Malynovskyi MB, Sevryukova MM, Verbitsky AB, Kapush OA, Rozhin AG, Lutsyk PM. Mixing of Excitons in Nanostructures Based on a Perylene Dye with CdTe Quantum Dots. MATERIALS (BASEL, SWITZERLAND) 2023; 16:552. [PMID: 36676289 PMCID: PMC9861622 DOI: 10.3390/ma16020552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/23/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
Semiconductor quantum dots of the A2B6 group and organic semiconductors have been widely studied and applied in optoelectronics. This study aims to combine CdTe quantum dots and perylene-based dye molecules into advanced nanostructure system targeting to improve their functional properties. In such systems, new electronic states, a mixture of Wannier-Mott excitons with charge-transfer excitons, have appeared at the interface of CdTe quantum dots and the perylene dye. The nature of such new states has been analyzed by absorption and photoluminescence spectroscopy with picosecond time resolution. Furthermore, aggregation of perylene dye on the CdTe has been elucidated, and contribution of Förster resonant energy transfer has been observed between aggregated forms of the dye and CdTe quantum dots in the hybrid CdTe-perylene nanostructures. The studied nanostructures have strongly quenched emission of quantum dots enabling potential application of such systems in dissociative sensing.
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Affiliation(s)
- Yuri P. Piryatinski
- Institute of Physics, National Academy of Sciences of Ukraine, 46 Prospekt Nauky, 03680 Kyiv, Ukraine
| | - Markiian B. Malynovskyi
- Institute of Physics, National Academy of Sciences of Ukraine, 46 Prospekt Nauky, 03680 Kyiv, Ukraine
| | - Maryna M. Sevryukova
- Institute of Physics, National Academy of Sciences of Ukraine, 46 Prospekt Nauky, 03680 Kyiv, Ukraine
| | - Anatoli B. Verbitsky
- Institute of Physics, National Academy of Sciences of Ukraine, 46 Prospekt Nauky, 03680 Kyiv, Ukraine
| | - Olga A. Kapush
- V. Lashkaryov Institute of Semiconductors Physics, National Academy of Sciences of Ukraine, 41 Prospekt Nauky, 03680 Kyiv, Ukraine
| | - Aleksey G. Rozhin
- Aston Institute of Photonic Technologies, College of Engineering and Physical Sciences, Aston University, Aston Triangle, Birmingham B4 7ET, UK
| | - Petro M. Lutsyk
- Aston Institute of Photonic Technologies, College of Engineering and Physical Sciences, Aston University, Aston Triangle, Birmingham B4 7ET, UK
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Marcato T, Krumeich F, Shih CJ. Confinement-Tunable Transition Dipole Moment Orientation in Perovskite Nanoplatelet Solids and Binary Blends. ACS NANO 2022; 16:18459-18471. [PMID: 36350363 DOI: 10.1021/acsnano.2c06600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Tuning the transition dipole moment (TDM) orientation in low-dimensional semiconductors is of fundamental and practical interest, as it enables high-efficiency nanophotonics and light-emitting diodes. However, despite recent progress in nanomaterials physics and chemistry, material systems that allow continuous tuning of the TDM orientation remain rare. Here, combining k-space photoluminescence spectroscopy and multiscale modeling, we demonstrate that the TDM orientation in lead halide perovskite (LHP) nanoplatelet (NPL) solids is largely confinement-tunable through the NPL geometry that regulates the anisotropy of Bloch states, dielectric confinement, and exciton fine structure. We further quantified the role of uniaxial ordering during NPL assembly in modifying the macroscopic emission directionality of thin films, which is especially important in actual optoelectronic devices. Our theoretical framework successfully corroborates the previous prediction of exciton bright level order reversal with experimental evidence of a counterintuitive reduction of in-plane dipole ratio in ultrathin (one- and two-monolayer-thick) NPLs, even at room temperature. More interestingly, the NPLs retain their TDM orientation in binary blends irrespective of interparticle energy transfer, owing to the phase segregation and NPL-NPL decoupling, enabling the design of films whose fluorescence exhibits an intrinsic angle-dependent color gradient.
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Affiliation(s)
- Tommaso Marcato
- Institute for Chemical and Bioengineering, ETH Zürich, 8093Zürich, Switzerland
| | - Frank Krumeich
- Laboratory of Inorganic Chemistry, ETH Zürich, 8093Zürich, Switzerland
| | - Chih-Jen Shih
- Institute for Chemical and Bioengineering, ETH Zürich, 8093Zürich, Switzerland
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Kumar S, Marcato T, Krumeich F, Li YT, Chiu YC, Shih CJ. Anisotropic nanocrystal superlattices overcoming intrinsic light outcoupling efficiency limit in perovskite quantum dot light-emitting diodes. Nat Commun 2022; 13:2106. [PMID: 35440650 PMCID: PMC9018755 DOI: 10.1038/s41467-022-29812-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 03/31/2022] [Indexed: 12/17/2022] Open
Abstract
Quantum dot (QD) light-emitting diodes (LEDs) are emerging as one of the most promising candidates for next-generation displays. However, their intrinsic light outcoupling efficiency remains considerably lower than the organic counterpart, because it is not yet possible to control the transition-dipole-moment (TDM) orientation in QD solids at device level. Here, using the colloidal lead halide perovskite anisotropic nanocrystals (ANCs) as a model system, we report a directed self-assembly approach to form the anisotropic nanocrystal superlattices (ANSLs). Emission polarization in individual ANCs rescales the radiation from horizontal and vertical transition dipoles, effectively resulting in preferentially horizontal TDM orientation. Based on the emissive thin films comprised of ANSLs, we demonstrate an enhanced ratio of horizontal dipole up to 0.75, enhancing the theoretical light outcoupling efficiency of greater than 30%. Our optimized single-junction QD LEDs showed peak external quantum efficiency of up to 24.96%, comparable to state-of-the-art organic LEDs. Controlling the transition-dipole-moment orientation in quantum dot solids at device level has not been achieved before. Here, the authors demonstrated intrinsic light out-coupling enhancement approach to boost the external quantum efficiency up to 25% by using the colloidal lead halide perovskite anisotropic nanocrystals.
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Affiliation(s)
- Sudhir Kumar
- Institute for Chemical and Bioengineering, ETH Zürich, 8093, Zürich, Switzerland
| | - Tommaso Marcato
- Institute for Chemical and Bioengineering, ETH Zürich, 8093, Zürich, Switzerland
| | - Frank Krumeich
- Laboratory of Inorganic Chemistry, ETH Zürich, 8093, Zürich, Switzerland
| | - Yen-Ting Li
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan, ROC.,National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan, ROC
| | - Yu-Cheng Chiu
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan, ROC
| | - Chih-Jen Shih
- Institute for Chemical and Bioengineering, ETH Zürich, 8093, Zürich, Switzerland.
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Zhang Z, Ghimire S, Okamoto T, Sachith BM, Sobhanan J, Subrahmanyam C, Biju V. Mechano-optical Modulation of Excitons and Carrier Recombination in Self-Assembled Halide Perovskite Quantum Dots. ACS NANO 2022; 16:160-168. [PMID: 34978425 DOI: 10.1021/acsnano.1c04944] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Mechanically modulating optical properties of semiconductor nanocrystals and organic molecules are valuable for mechano-optical and optomechanical devices. Halide perovskites with excellent optical and electronic properties are promising for such applications. We report the mechanically changing excitons and photoluminescence of self-assembled formamidinium lead bromide (FAPbBr3) quantum dots. The as-synthesized quantum dots (3.6 nm diameter), showing blue emission and a short photoluminescence lifetime (2.6 ns), form 20-300 nm 2D and 3D self-assemblies with intense green emission in a solution or a film. The blue emission and short photoluminescence lifetime of the quantum dots are different from the delayed (ca. 550 ns) green emission from the assemblies. Thus, we consider the structure and excitonic properties of individual quantum dots differently from the self-assemblies. The blue emission and short lifetime of individual quantum dots are consistent with a weak dielectric screening of excitons or strong quantum confinement. The red-shifted emission and a long photoluminescence lifetime of the assemblies suggest a strong dielectric screening that weakens the quantum confinement, allowing excitons to split into free carriers, diffuse, and trap. The delayed emission suggests nongeminate recombination of diffusing and detrapped carriers. Interestingly, the green emission of the self-assembly blueshifts by applying a lateral mechanical force (ca. 4.65 N). Correspondingly, the photoluminescence lifetime decreases by 1 order of magnitude. These photoluminescence changes suggest the mechanical dissociation of the quantum dot self-assemblies and mechanically controlled exciton splitting and recombination. The mechanically changing emission color and lifetime of halide perovskite are promising for mechano-optical and optomechanical switches and sensors.
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Affiliation(s)
- Zhijing Zhang
- Research Institute for Electronic Science, Hokkaido University, N20, W10, Sapporo, Hokkaido 001-0020, Japan
- Graduate School of Environmental Science, Hokkaido University, N10, W5, Sapporo, Hokkaido 060-0810, Japan
| | - Sushant Ghimire
- Research Institute for Electronic Science, Hokkaido University, N20, W10, Sapporo, Hokkaido 001-0020, Japan
- Institute of Physics, University of Rostock, Albert-Einstein-Straβe 23, 18059 Rostock, Germany
| | - Takuya Okamoto
- Research Institute for Electronic Science, Hokkaido University, N20, W10, Sapporo, Hokkaido 001-0020, Japan
| | | | - Jeladhara Sobhanan
- Graduate School of Environmental Science, Hokkaido University, N10, W5, Sapporo, Hokkaido 060-0810, Japan
| | - Challapalli Subrahmanyam
- Department of Chemistry, Indian Institute of Technology Hyderabad, Mandi, Telangana 502285, India
| | - Vasudevanpillai Biju
- Research Institute for Electronic Science, Hokkaido University, N20, W10, Sapporo, Hokkaido 001-0020, Japan
- Graduate School of Environmental Science, Hokkaido University, N10, W5, Sapporo, Hokkaido 060-0810, Japan
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Yin H, Xing K, Zhang Y, Dissanayake DMAS, Lu Z, Zhao H, Zeng Z, Yun JH, Qi DC, Yin Z. Periodic nanostructures: preparation, properties and applications. Chem Soc Rev 2021; 50:6423-6482. [PMID: 34100047 DOI: 10.1039/d0cs01146k] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Periodic nanostructures, a group of nanomaterials consisting of single or multiple nano units/components periodically arranged into ordered patterns (e.g., vertical and lateral superlattices), have attracted tremendous attention in recent years due to their extraordinary physical and chemical properties that offer a huge potential for a multitude of applications in energy conversion, electronic and optoelectronic applications. Recent advances in the preparation strategies of periodic nanostructures, including self-assembly, epitaxy, and exfoliation, have paved the way to rationally modulate their ferroelectricity, superconductivity, band gap and many other physical and chemical properties. For example, the recent discovery of superconductivity observed in "magic-angle" graphene superlattices has sparked intensive studies in new ways, creating superlattices in twisted 2D materials. Recent development in the various state-of-the-art preparations of periodic nanostructures has created many new ideas and findings, warranting a timely review. In this review, we discuss the current advances of periodic nanostructures, including their preparation strategies, property modulations and various applications.
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Affiliation(s)
- Hang Yin
- Research School of Chemistry, Australian National University, ACT 2601, Australia.
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