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Guo H, Lu Y, Lei Z, Bao H, Zhang M, Wang Z, Guan C, Tang B, Liu Z, Wang L. Machine learning-guided realization of full-color high-quantum-yield carbon quantum dots. Nat Commun 2024; 15:4843. [PMID: 38844440 PMCID: PMC11156924 DOI: 10.1038/s41467-024-49172-6] [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: 10/13/2023] [Accepted: 05/24/2024] [Indexed: 06/09/2024] Open
Abstract
Carbon quantum dots (CQDs) have versatile applications in luminescence, whereas identifying optimal synthesis conditions has been challenging due to numerous synthesis parameters and multiple desired outcomes, creating an enormous search space. In this study, we present a novel multi-objective optimization strategy utilizing a machine learning (ML) algorithm to intelligently guide the hydrothermal synthesis of CQDs. Our closed-loop approach learns from limited and sparse data, greatly reducing the research cycle and surpassing traditional trial-and-error methods. Moreover, it also reveals the intricate links between synthesis parameters and target properties and unifies the objective function to optimize multiple desired properties like full-color photoluminescence (PL) wavelength and high PL quantum yields (PLQY). With only 63 experiments, we achieve the synthesis of full-color fluorescent CQDs with high PLQY exceeding 60% across all colors. Our study represents a significant advancement in ML-guided CQDs synthesis, setting the stage for developing new materials with multiple desired properties.
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Affiliation(s)
- Huazhang Guo
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, BaoShan District, Shanghai, 200444, China
| | - Yuhao Lu
- College of Computing and Data Science, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Zhendong Lei
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Hong Bao
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, BaoShan District, Shanghai, 200444, China
| | - Mingwan Zhang
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, BaoShan District, Shanghai, 200444, China
| | - Zeming Wang
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, BaoShan District, Shanghai, 200444, China
| | - Cuntai Guan
- College of Computing and Data Science, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
| | - Bijun Tang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
| | - Zheng Liu
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
- CINTRA CNRS/NTU/THALES, UMI 3288, Research Techno Plaza, 50 Nanyang Drive, Border X Block, Level 6, Singapore, 637553, Singapore.
- Institute for Functional Intelligent Materials, National University of Singapore, Singapore, Singapore.
| | - Liang Wang
- Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, BaoShan District, Shanghai, 200444, China.
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
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Boruah A, Bora S, Thakur A, Dutta HS, Saikia BK. Solid-State Phosphors from Coal-Derived Carbon Quantum Dots. ACS OMEGA 2023; 8:25410-25423. [PMID: 37483255 PMCID: PMC10357543 DOI: 10.1021/acsomega.3c02884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 06/22/2023] [Indexed: 07/25/2023]
Abstract
With unique optical and chemical properties, carbon quantum dots (CQDs) find tremendous applications in chemistry, biology, and materials science to medicine. To expand the applicability of coal-derived CQDs from the liquid to solid state, we herein report the sustainable synthesis of solid phosphors from coal-derived CQDs using poly(vinyl alcohol) (PVA) and silica (SiO2) as an organic and inorganic matrix. Two coal-derived CQDs were obtained using an eco-friendly ultrasonic-assisted wet oxidation method. The structural and chemical properties of the CQDs were extensively investigated and compared with commercial CQDs. The coal-derived CQDs exhibited blue fluorescence with 8.9 and 14.9% quantum yields. The CQDs were found to be self-co-doped with nitrogen and sulfur heteroatoms through surface and edge functional groups. Solid-state fluorescence of PVA/CQD composite films confirmed that the CQDs retained their excellent blue emission in a dry solid matrix. A facile one-pot sol-gel method was employed to fabricate SiO2/CQD phosphors with the unique fluorescence emission. Due to their special structural features, coal-derived CQDs favored the heterogeneous nucleation and rapid formation of SiO2/CQD phosphors. Further, coal-derived CQDs caused high-intensity white light emission with CIE coordinates of (0.312, 0.339) by endowing a suitable band gap structure in a SiO2/CQD solid phosphor for potential optical applications.
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Affiliation(s)
- Anusuya Boruah
- Coal
and Energy Division, CSIR-North East Institute
of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sarmistha Bora
- Coal
and Energy Division, CSIR-North East Institute
of Science and Technology, Jorhat 785006, Assam, India
| | - Ashutosh Thakur
- Coal
and Energy Division, CSIR-North East Institute
of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Hemant Sankar Dutta
- Analytical
Chemistry Group, Materials Science & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Binoy K. Saikia
- Coal
and Energy Division, CSIR-North East Institute
of Science and Technology, Jorhat 785006, Assam, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Anil Kumar Y, Koyyada G, Ramachandran T, Kim JH, Hegazy HH, Singh S, Moniruzzaman M. Recent advancement in quantum dot-based materials for energy storage applications: a review. Dalton Trans 2023. [PMID: 37096427 DOI: 10.1039/d3dt00325f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
The need for energy storage and conversion is growing as a result of the worsening consequences of climate change and the depletion of fossil fuels. Energy conversion and storage requirements are rising as a result of environmental problems including global warming and the depletion of fossil fuels. The key to resolving the energy crisis is anticipated to be the quick growth of sustainable energy sources including solar energy, wind energy, and hydrogen energy. In this review, we have focused on discussing various quantum dots (QDs) and polymers or nanocomposites used for SCs and have provided examples of each type's performance. Effective QD use has really led to increased performance efficiency in SCs. The use of quantum dots in energy storage devices, batteries, and various quantum dots synthesis have all been emphasized in a number of great literature articles. In this review, we have homed in on the electrode materials based on quantum dots and their composites for storage and quantum dot based flexible devices that have been published up to this point.
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Affiliation(s)
- Yedluri Anil Kumar
- Department of Chemical & Petroleum Engineering, United Arab Emirates University, Al Ain-15551, United Arab Emirates.
| | - Ganesh Koyyada
- Department of Chemical Engineering, Yeungnam University, 214-1, Daehak-ro 280, Gyeongsan 712-749, Gyeongbuk-do, Republic of Korea.
| | - Tholkappiyan Ramachandran
- Department of Physics, College of Science, United Arab Emirates University, Al Ain-15551, United Arab Emirates.
| | - Jae Hong Kim
- Department of Chemical Engineering, Yeungnam University, 214-1, Daehak-ro 280, Gyeongsan 712-749, Gyeongbuk-do, Republic of Korea.
| | - H H Hegazy
- Department of Physics, Faculty of Science, King Khalid University, P. O. Box 9004, Abha, Saudi Arabia
- Researcher Center for Advanced Materials Science (RCAMS), King Khalid University, P. O. Box 9004, Abha 61413, Saudi Arabia
| | - Sangeeta Singh
- Microelectronics and VLSI Design Lab, National Institute of Technology Patna, India
| | - Md Moniruzzaman
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam-daero, Seongnam-si, Gyeonggi-do 13120, Republic of Korea.
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Du W, Shen Z, Liang Y, Gong S, Meng Z, Li M, Wang Z, Wang S. A highly effective "naked eye" colorimetric and fluorimetric curcumin-based fluorescent sensor for specific and sensitive detection of H 2O 2in vivo and in vitro. Analyst 2023; 148:1824-1837. [PMID: 36939165 DOI: 10.1039/d3an00340j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
Hydrogen peroxide (H2O2) is involved in many important tasks in normal cell metabolism and signaling. However, abnormal levels of H2O2 are associated with the occurrence of several diseases. Therefore, it is important to develop a new method for the detection of H2O2in vivo and in vitro. A turn-off sensor, 2,2-difluoro-4,6-bis(3-methoxy-4-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)oxy)styryl)-2H-1,3,2-dioxaborine (DFCB), based on curcumin was developed for the detection of H2O2. The DFCB, an orange-emitting sensor, was constructed by employing 2,2-difluoro-4,6-bis(4-hydroxy-3-methoxystyryl)-2H-1,3,2-dioxaborine (DFC) as the main carrier, and 2-(4-bromomethylphenyl)-4,4,5,5-tetramethyl-1,3,2-doxaborolane as the recognition site. The recognition group on the DFCB sensor could be completely cleaved by H2O2 to generate the intermediate DFC, which would lead to a colorimetric change from bright orange to light blue accompanying by a significantly quenched fluorescence, which could be seen by the naked eye. This sensor exhibited a highly specific fluorescence response to H2O2, in preference to other relevant species, with an excellent anti-interference performance. The sensor DFCB also possessed some advantages including a wide pH response range (6-11), a broad linear range (0-300 μM), and a low detection limit (1.31 μM). The sensing mechanism of the DFCB sensor for H2O2 was verified by HRMS analysis, 1H-NMR titration and DFT calculations. In addition, the use of the DFCB sensor was compatible with the fluorescence imaging of H2O2 in living cells and zebrafish.
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Affiliation(s)
- Wenhao Du
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Zheyu Shen
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Yueying Liang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Shuai Gong
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Zhiyuan Meng
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Mingxing Li
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Zhonglong Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Shifa Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
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