1
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Chen D, Chen W, Wu Y, Wang L, Wu X, Xu H, Chen L. Covalent Organic Frameworks Containing Dual O 2 Reduction Centers for Overall Photosynthetic Hydrogen Peroxide Production. Angew Chem Int Ed Engl 2023; 62:e202217479. [PMID: 36576381 DOI: 10.1002/anie.202217479] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/26/2022] [Accepted: 12/28/2022] [Indexed: 12/29/2022]
Abstract
Covalent organic frameworks (COFs) are highly desirable for achieving high-efficiency overall photosynthesis of hydrogen peroxide (H2 O2 ) via molecular design. However, precise construction of COFs toward overall photosynthetic H2 O2 remains a great challenge. Herein, we report the crystalline s-heptazine-based COFs (HEP-TAPT-COF and HEP-TAPB-COF) with separated redox centers for efficient H2 O2 production from O2 and pure water. The spatially and orderly separated active sites in HEP-COFs can efficiently promote charge separation and enhance photocatalytic H2 O2 production. Compared with HEP-TAPB-COF, HEP-TAPT-COF exhibits higher H2 O2 production efficiency for integrating dual O2 reduction active centers of s-heptazine and triazine moieties. Accordingly, HEP-TAPT-COF bearing dual O2 reduction centers exhibits a remarkable solar-to-chemical energy efficiency of 0.65 % with a high apparent quantum efficiency of 15.35 % at 420 nm, surpassing previously reported COF-based photocatalysts.
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Affiliation(s)
- Dan Chen
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin, 300072, China
| | - Weiben Chen
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin, 300072, China
| | - Yuting Wu
- Department of Polymer Science and Engineering, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Lei Wang
- Department of Polymer Science and Engineering, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Xiaojun Wu
- Department of Polymer Science and Engineering, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Hangxun Xu
- Department of Polymer Science and Engineering, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Long Chen
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin, 300072, China.,State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China
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2
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Yu H, Wang D. Suppressing the Excitonic Effect in Covalent Organic Frameworks for Metal-Free Hydrogen Generation. JACS AU 2022; 2:1848-1856. [PMID: 36032531 PMCID: PMC9400042 DOI: 10.1021/jacsau.2c00169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Photocatalytic hydrogen generation is a promising solution for renewable energy production and plays a role in achieving carbon neutrality. Covalent organic frameworks (COFs) with highly designable backbones and inherent pores have emerged as novel photocatalysts, yet the strong excitonic effect in COFs can impede the promotion of energy conversion efficiency. Here, we propose a facile approach to suppress the excitonic effect in COFs, which is by narrowing the band gap and increasing the dielectric screening via a rational backbone design and chemical modifications. Based on the GW-BSE method, we uncover a linear relationship between the electronic dielectric constant and the inverse square of the optical band gap of COFs of the Lieb lattice. We further demonstrate that both reduced exciton binding energy and enhanced sunlight absorption can be simultaneously realized in COFs with a narrow band gap. Specifically, we show that one of our designed COFs whose exciton binding energy is nearly half that of g-C3N4 is capable of metal-free hydrogen production under near-infrared light irradiation. Our results showcase an effective method to suppress the excitonic effect in COFs and also pave the way for their applications in photocatalytic, photovoltaic, and other related solar energy conversions.
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3
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Yu Z, Xiao Y, Guo S, Min F, Sun Q, Song R, Li J. Visible Light-Driven Selective Reduction of CO 2 by Acetylene-Bridged Cobalt Porphyrin Conjugated Polymers. CHEMSUSCHEM 2022; 15:e202200424. [PMID: 35445580 DOI: 10.1002/cssc.202200424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 04/07/2022] [Indexed: 06/14/2023]
Abstract
Photocatalytic conversion of CO2 into renewable fuels with high efficiency and selectivity is desirable for solar energy utilization, but remains a great challenge. Herein, cobalt(II)-porphyrin functionalized conjugated polymers with acetylene bridging units, assembled through the Sonogashira cross coupling reaction, as heterogeneous catalysts for CO2 photoreduction were presented. Experimental investigations and density functional theory calculations demonstrated the crucial roles of Co centers in porphyrin units for CO2 activation and conversion, while excessive acetylene group prompted the competing hydrogen evolution reaction and reduced the selectivity. Thus, the CoPor-DBBP afforded superior activity for the CO generation with a rate of 286.7 μmol g-1 h-1 and high selectivity of up to 90.4 %. This work presents a new insight for rationally designing of porphyrin-based conjugated polymers as energetic photocatalyst in CO2 reduction.
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Affiliation(s)
- Zhen Yu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Yuting Xiao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Shien Guo
- Institute of Advanced Materials (IAM), College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, P. R. China
| | - Feng Min
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Qing Sun
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Renjie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Jinheng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, P. R. China
- School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang, Henan, 475004, P. R. China
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4
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Liu M, Wei C, Zhuzhang H, Zhou J, Pan Z, Lin W, Yu Z, Zhang G, Wang X. Fully Condensed Poly (Triazine Imide) Crystals: Extended π‐Conjugation and Structural Defects for Overall Water Splitting. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Minghui Liu
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Changgeng Wei
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Hangyu Zhuzhang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Jingmin Zhou
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Zhiming Pan
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Wei Lin
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Zhiyang Yu
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Guigang Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China
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Liu M, Wei C, Zhuzhang H, Zhou J, Pan Z, Lin W, Yu Z, Zhang G, Wang X. Fully Condensed Poly (Triazine Imide) Crystals: Extended π-Conjugation and Structural Defects for Overall Water Splitting. Angew Chem Int Ed Engl 2021; 61:e202113389. [PMID: 34750939 DOI: 10.1002/anie.202113389] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Indexed: 11/07/2022]
Abstract
Conventional polymerization for the synthesis of carbon nitride usually generates amorphous heptazine-based melon with an abundance of undesired structural defects, which function as charge carrier recombination centers to decrease the photocatalytic efficiency. Herein, a fully condensed poly (triazine imide) crystal with extended π-conjugation and deficient structure defects was obtained by conducting the polycondensation in a mild molten salt of LiCl/NaCl. The melting point of the binary LiCl/NaCl system is around 550 °C, which substantially restrain the depolymerization of triazine units and extend the π-conjugation. The optimized polymeric carbon nitride crystal exhibits a high apparent quantum efficiency of 12 % (λ=365 nm) for hydrogen production by one-step excitation overall water splitting, owing to the efficient exciton dissociation and the subsequent fast transfer of charge carriers.
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Affiliation(s)
- Minghui Liu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Changgeng Wei
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Hangyu Zhuzhang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Jingmin Zhou
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Zhiming Pan
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Wei Lin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Zhiyang Yu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Guigang Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
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6
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Lan ZA, Wu M, Fang Z, Chi X, Chen X, Zhang Y, Wang X. A Fully Coplanar Donor-Acceptor Polymeric Semiconductor with Promoted Charge Separation Kinetics for Photochemistry. Angew Chem Int Ed Engl 2021; 60:16355-16359. [PMID: 33945196 DOI: 10.1002/anie.202103992] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/30/2021] [Indexed: 11/08/2022]
Abstract
Charge generation and separation are regarded as the major constraints limiting the photocatalytic activity of polymeric photocatalysts. Herein, two new linear polyarylether-based polymers (PAE-CPs) with distinct linking patterns between their donor and acceptor motifs were tailor-made to investigate the influence of different linking patterns on the charge generation and separation process. Theoretical and experimental results revealed that compared to the traditional single-stranded linker, the double-stranded linking pattern strengthens donor-acceptor interactions in PAE-CPs and generates a coplanar structure, facilitating charge generation and separation, and enabling red-shifted light absorption. With these prominent advantages, the PAE-CP interlinked with a double-stranded linker exhibits markedly enhanced photocatalytic activity compared to that of its single-strand-linked analogue. Such findings can facilitate the rational design and modification of organic semiconductors for charge-induced reactions.
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Affiliation(s)
- Zhi-An Lan
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.,College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Meng Wu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Zhongpu Fang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xu Chi
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xiong Chen
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Yongfan Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
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7
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Lan Z, Wu M, Fang Z, Chi X, Chen X, Zhang Y, Wang X. A Fully Coplanar Donor–Acceptor Polymeric Semiconductor with Promoted Charge Separation Kinetics for Photochemistry. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103992] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zhi‐An Lan
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350116 P. R. China
- College of Chemical Engineering Fuzhou University Fuzhou 350116 P. R. China
| | - Meng Wu
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350116 P. R. China
| | - Zhongpu Fang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350116 P. R. China
| | - Xu Chi
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350116 P. R. China
| | - Xiong Chen
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350116 P. R. China
| | - Yongfan Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350116 P. R. China
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350116 P. R. China
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8
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Li Y, Wang H, Zhang X, Wang S, Jin S, Xu X, Liu W, Zhao Z, Xie Y. Exciton‐Mediated Energy Transfer in Heterojunction Enables Infrared Light Photocatalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yuanjin Li
- Hefei National Laboratory for Physical Sciences at the Microscale CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 China
| | - Hui Wang
- Hefei National Laboratory for Physical Sciences at the Microscale CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 China
- Institute of Energy Hefei Comprehensive National Science Center Hefei 230031 China
| | - Xiaodong Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 China
- Institute of Energy Hefei Comprehensive National Science Center Hefei 230031 China
| | - Shuhui Wang
- Hefei National Laboratory for Physical Sciences at the Microscale CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 China
| | - Sen Jin
- Hefei National Laboratory for Physical Sciences at the Microscale CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 China
| | - Xiaoliang Xu
- Hefei National Laboratory for Physical Sciences at the Microscale CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 China
| | - Wenxiu Liu
- Hefei National Laboratory for Physical Sciences at the Microscale CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 China
| | - Zhi Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 China
| | - Yi Xie
- Hefei National Laboratory for Physical Sciences at the Microscale CAS Centre for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 China
- Institute of Energy Hefei Comprehensive National Science Center Hefei 230031 China
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Li Y, Wang H, Zhang X, Wang S, Jin S, Xu X, Liu W, Zhao Z, Xie Y. Exciton-Mediated Energy Transfer in Heterojunction Enables Infrared Light Photocatalysis. Angew Chem Int Ed Engl 2021; 60:12891-12896. [PMID: 33829645 DOI: 10.1002/anie.202101090] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 03/22/2021] [Indexed: 01/19/2023]
Abstract
Although a few semiconductors can directly absorb infrared light, their intrinsic properties like improper band-edge position and strong electron-hole interaction restrict further photocatalytic applications. Herein, we propose an exciton-mediated energy transfer strategy for realizing efficient infrared light response in heterostructures. Using black phosphorous/polymeric carbon nitride (BP/CN) heterojunction, CN could be indirectly excited by infrared light with the aid of nonradiatively exciton-based energy transfer from BP. At the same time, excitons are dissociated into free charge carriers at the interface of BP/CN heterojunction, followed by hole injection to BP and electron retainment in CN. As a result of these unique photoexcitation processes, BP/CN heterojunction exhibits promoted conversion rate and selectivity in amine-amine oxidative coupling reaction even under infrared light irradiation. This study opens a new way for the design of efficient infrared light activating photocatalysts.
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Affiliation(s)
- Yuanjin Li
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Centre for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, China
| | - Hui Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Centre for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, China.,Institute of Energy, Hefei Comprehensive National Science Center, Hefei, 230031, China
| | - Xiaodong Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Centre for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, China.,Institute of Energy, Hefei Comprehensive National Science Center, Hefei, 230031, China
| | - Shuhui Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Centre for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, China
| | - Sen Jin
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Centre for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, China
| | - Xiaoliang Xu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Centre for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, China
| | - Wenxiu Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Centre for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, China
| | - Zhi Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Centre for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, China
| | - Yi Xie
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Centre for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, China.,Institute of Energy, Hefei Comprehensive National Science Center, Hefei, 230031, China
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