1
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Zheng H, Pei L, Bai J, Wu P, Zhao X, Yang Y, Chen Z, Zhang M, Wang J. Eosin Y-Based Metal-Organic Framework Synergistic with Cobalt(II) Complex for Hydrogen Evolution through Photoinduced Intermolecular Electron Transfer. Inorg Chem 2023; 62:21424-21431. [PMID: 38044658 DOI: 10.1021/acs.inorgchem.3c03564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Photocatalytic hydrogen evolution reaction (HER) is a promising approach for producing clean energy and has the potential to play an important role in the transition toward a more sustainable and environmentally friendly energy system. Optimizing the photoinduced electron transfer (PET) process and increasing visible-light utilization play a central role in photocatalysis. Herein, we built a novel Eosin Y-based metal-organic framework (Zn-EYTP) by synergizing a cobalt(II) complex for boosting the H2 evolution efficiency through photoinduced intermolecular electron transfer. Under optimized conditions, the maximum H2 evolution efficiency for Zn-EYTP was determined to be a turnover number (TON) value of 11,100 under green LED irradiation. And the synthesized Zn-EYTP photocatalysts could be easily recycled to restore the initial photocatalytic activity even after 3 cycles. Detailed studies reveal that the significantly enhanced HER activity in Zn-EYTP could be ascribed to the effective separation of photogenerated charges and the synergistic intermolecular interaction between Zn-EYTP and [Co(bpy)3]Cl2. The present work enables a deeper understanding of the importance of the PET process for enhanced HER photocatalytic activities, which will provide a viable strategy for the development of highly efficient photocatalysts.
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Affiliation(s)
- Hao Zheng
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Li Pei
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Jianguo Bai
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Pengyan Wu
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Xiaoli Zhao
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Yan Yang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Zeyuan Chen
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Moxi Zhang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
| | - Jian Wang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China
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2
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Liu H, Li QQ, Zhou L, Deng B, Pan PH, Zhao SY, Liu P, Wang YY, Li JL. Confinement of Organic Dyes in UiO-66-Type Metal-Organic Frameworks for the Enhanced Synthesis of [1,2,5]Thiadiazole[3,4- g]benzoimidazoles. J Am Chem Soc 2023; 145:17588-17596. [PMID: 37454391 DOI: 10.1021/jacs.3c02379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Organic dyes as non-noble metal photosensitizers have attracted increasing attention due to their environmental friendliness and sustainability but suffer from fast deactivation and low stability. Here, we reported a fruitful strategy by the confinement and stabilization of visible light-active signal unit organic dyes within the metal-organic frameworks (MOFs) and developed a series of heterogeneous photocatalysts dye@UiO-66s [dye = fluorescein (FL)/rhodamine B (RhB)/eosin Y (EY), UiO-66s = UiO-66, and Bim-UiO-66]. It has been demonstrated that the encapsulated dyes can effectively sensitize MOF hosts and dominate the band structures and photocatalytic activities of dye@UiO-66s regardless of the ligand functionalization of MOFs. Photocatalytic experiments showed that these dye@UiO-66s exhibit enhanced activities relative to free dyes and among them, FL@Bim-UiO-66 displays excellent efficiencies toward the green synthesis of new carbon-bridged annulations, [1,2,5]thiadiazole[3,4-g]benzoimidazoles in the yield of up to 98% at room temperature with outstanding stability and reusability. Furthermore, the intramolecular cyclization intermediate was captured and characterized by the single-crystal X-ray diffraction analysis.
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Affiliation(s)
- Hua Liu
- College of Chemistry & Materials Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an 710127, P. R. China
| | - Quan-Quan Li
- College of Chemistry & Materials Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an 710127, P. R. China
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, P. R. China
| | - Li Zhou
- College of Chemistry & Materials Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an 710127, P. R. China
| | - Bing Deng
- College of Chemistry & Materials Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an 710127, P. R. China
| | - Peng-Hui Pan
- College of Chemistry & Materials Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an 710127, P. R. China
| | - Shu-Ya Zhao
- College of Chemistry & Materials Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an 710127, P. R. China
| | - Ping Liu
- College of Chemistry & Materials Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an 710127, P. R. China
| | - Yao-Yu Wang
- College of Chemistry & Materials Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an 710127, P. R. China
| | - Jian-Li Li
- College of Chemistry & Materials Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xi'an 710127, P. R. China
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3
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Polydopamine-Coated Polyurethane Foam as a Structured Support for the Development of an Easily Reusable Heterogeneous Photocatalyst Based on Eosin Y. Catalysts 2023. [DOI: 10.3390/catal13030589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Abstract
An easy-to-handle eosin Y-based heterogeneous photocatalyst was prepared by post-functionalization of a polydopamine-coated open cell polyurethane foam (PDA@PUF) via the silanization of the adhesive layer with 3-(triethoxysilyl)propan-1-amine (APTES) and the subsequent EDC-mediated coupling of the resulting amino-functionalized foam with eosin Y. The obtained macroscopic material, EY-APTES@PDA@PUF, showed good efficiency and excellent reusability, in an easy-to-carry “dip-and-play” mode for at least six runs as photocatalyst for the aerobic oxidation of 2-methyl-5-nitroisoquinolin-2-ium iodide to the corresponding isoquinolone. Subsequent investigation of the catalytic efficiency of EY-APTES@PDA@PUF for the oxidation of sulfides to sulfoxides, however, evidenced non-negligible eosin Y leaching, leading to a progressive deactivation of the catalytic foam in this case. Two alternative synthetic protocols for the preparation of the macroscopic photocatalyst were next explored to avoid eosin Y leaching. In both cases however, cycling tests also highlighted a progressive deactivation of the catalytic foams in sulfide-to-sulfoxide oxidation reactions.
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4
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Zhao L, Du Z, Ji G, Wang Y, Cai W, He C, Duan C. Eosin Y-Containing Metal-Organic Framework as a Heterogeneous Catalyst for Direct Photoactivation of Inert C-H Bonds. Inorg Chem 2022; 61:7256-7265. [PMID: 35507831 DOI: 10.1021/acs.inorgchem.1c03813] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Xanthene dyes as a class of ideal organic homogeneous photocatalyst have received significant attention in C-H bond activation; however, the inherent nature of fast carrier recombination/deactivation and low stability limits their practical applications. Herein, by the ingenious decoration of eosin Y into a porous metal-organic framework (MOF), a high-performance heterogeneous MOF-based photocatalyst was prepared to efficiently activate inert C-H bonds on the reactants via the hydrogen atom transfer pathway for the functionalization of the C-H bonds. Taking advantage of the fixation effect of a rigid framework, the incorporation of eosin Y into MOF leads to great enhancement of their chemical durability. More importantly, by the introduction of the second auxiliary ligand, the carbonyl groups of xanthene on the eosin Y dyes were perfectly retained and periodically aligned within the confined channels of this rigid framework, which could effectively form excited state radicals to prompt inert C-H bond activation, promoting reaction efficiency by the host-guest supramolecular interaction. New eosin Y-based MOFs were recyclable for six times without reducing photocatalytic activity. This eosin Y functionalized MOF-based heterogeneous photocatalytic system provides an availably catalytic avenue to develop a scalable and sustainable synthetic strategy for the practical application of organic dyes.
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Affiliation(s)
- Liang Zhao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
| | - Zenggang Du
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
| | - Guanfeng Ji
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
| | - Yefei Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
| | - Wei Cai
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
| | - Cheng He
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
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5
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Zhang K, Hu H, Shi L, Jia B, Huang H, Han X, Sun X, Ma T. Strategies for Optimizing the Photocatalytic Water‐Splitting Performance of Metal–Organic Framework‐Based Materials. SMALL SCIENCE 2021. [DOI: 10.1002/smsc.202100060] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Kailai Zhang
- Institute of Clean Energy Chemistry Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials College of Chemistry Liaoning University Shenyang 110036 China
| | - Haijun Hu
- Institute of Clean Energy Chemistry Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials College of Chemistry Liaoning University Shenyang 110036 China
| | - Litong Shi
- Institute of Clean Energy Chemistry Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials College of Chemistry Liaoning University Shenyang 110036 China
| | - Baohua Jia
- Centre for Translational Atomaterials Swinburne University of Technology Hawthorn Victoria 3122 Australia
| | - Hongwei Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes National Laboratory of Mineral Materials School of Materials Science and Technology China University of Geosciences Beijing 100083 China
| | - Xiaopeng Han
- School of Materials Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education) Tianjin Key Laboratory of Composite and Functional Materials Tianjin University Tianjin 300072 China
| | - Xiaodong Sun
- Institute of Clean Energy Chemistry Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials College of Chemistry Liaoning University Shenyang 110036 China
| | - Tianyi Ma
- Centre for Translational Atomaterials Swinburne University of Technology Hawthorn Victoria 3122 Australia
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6
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Quan Y, Shi W, Song Y, Jiang X, Wang C, Lin W. Bifunctional Metal-Organic Layer with Organic Dyes and Iron Centers for Synergistic Photoredox Catalysis. J Am Chem Soc 2021; 143:3075-3080. [PMID: 33606532 DOI: 10.1021/jacs.1c01083] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Here we report the design of a bifunctional metal-organic layer (MOL), Hf-EY-Fe, by bridging eosin Y (EY)-capped Hf6 secondary building units (SBUs) with Fe-TPY (TPY = 4'-(4-carboxyphenyl)[2,2':6',2''-terpyridine]-5,5''-dicarboxylate) ligands. With the organic dye EY as an efficient photosensitizer and TPY-Fe(OTf)2 as the catalytic center, Hf-EY-Fe efficiently catalyzes aminotrifluoromethylation, hydroxytrifluoromethylation, and chlorotrifluoromethylation of alkenes. Hf-EY-Fe also catalyzes the synthesis of CF3-substituted derivatives of large bioactive molecules such as rotenone, estrone, and adapalene with sizes of up to 2.2 nm. The proximity between EY and iron centers and their site isolation in Hf-EY-Fe enhance catalytic activity while inhibiting their mutual deactivation, leading to high turnover numbers of up to 1840 and good recyclability of the MOL catalyst.
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Affiliation(s)
- Yangjian Quan
- Department of Chemistry, The University of Chicago, Chicago, Illinois 60637, United States
| | - Wenjie Shi
- Department of Chemistry, The University of Chicago, Chicago, Illinois 60637, United States.,College of Chemistry and Chemical Engineering, iCHEM, State Key Laboratory of Physical Chemistry of Solid Surface, Xiamen University, Xiamen 361005, PR China
| | - Yang Song
- Department of Chemistry, The University of Chicago, Chicago, Illinois 60637, United States
| | - Xiaomin Jiang
- Department of Chemistry, The University of Chicago, Chicago, Illinois 60637, United States
| | - Cheng Wang
- College of Chemistry and Chemical Engineering, iCHEM, State Key Laboratory of Physical Chemistry of Solid Surface, Xiamen University, Xiamen 361005, PR China
| | - Wenbin Lin
- Department of Chemistry, The University of Chicago, Chicago, Illinois 60637, United States
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7
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Liu Y, Li B, Li HS, Wu P, Wang J. Metal-organic frameworks containing xanthene dyes for photocatalytic applications. Dalton Trans 2020; 49:17520-17526. [PMID: 33295904 DOI: 10.1039/d0dt03652h] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Metal-organic frameworks (MOFs) have recently emerged as a new type of prospective photocatalytic material due to their characteristics such as tunable structures, pore modification, crystalline nature with eliminated structural defects, unique semiconductor properties, etc. However, most of these systems also suffer from low activity, high cost, and low visible light utilization. Xanthene dyes are eco-friendly organic dyes used in photocatalysis. They possess the advantages of low cost, low toxicity, and high visible light response; so, they can be directly used as building blocks to fabricate MOF materials or as proper cocatalysts to increase the absorbance of irradiation leading to the construction of a reasonable photocatalytic system. Herein, we have summarized the recent developments in the study of MOFs containing xanthene dyes for photocatalytic applications. The paper can be divided into two sections depending on whether the xanthene dyes are coordinated in the MOF structure: (i) MOFs synergized with xanthene dyes for photocatalytic applications and (ii) MOFs with xanthene dyes incorporated within ligand backbones for photocatalytic applications. Moreover, in this paper, the present challenges and future opportunities in this field are also discussed.
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Affiliation(s)
- Yanhong Liu
- School of Chemistry and Materials Science & Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
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8
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Chu Y, Huang Z, Liu R, Boyer C, Xu J. Scalable and Recyclable Heterogeneous Organo‐photocatalysts on Cotton Threads for Organic and Polymer Synthesis. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yingying Chu
- Centre for Advanced Macromolecular Design School of Chemical Engineering, UNSW Sydney NSW 2052 Australia
| | - Zixuan Huang
- Centre for Advanced Macromolecular Design School of Chemical Engineering, UNSW Sydney NSW 2052 Australia
| | - Ruizhe Liu
- Centre for Advanced Macromolecular Design School of Chemical Engineering, UNSW Sydney NSW 2052 Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design School of Chemical Engineering, UNSW Sydney NSW 2052 Australia
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design School of Chemical Engineering, UNSW Sydney NSW 2052 Australia
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9
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Huang NY, He H, Li H, Liao PQ, Chen XM. A metal-organic framework with in situ generated low-coordinate binuclear Cu(i) units as a highly effective catalyst for photodriven hydrogen production. Chem Commun (Camb) 2020; 56:6700-6703. [PMID: 32418996 DOI: 10.1039/c9cc09589f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Herein, we report a metal-organic framework featuring a binuclear copper unit, showing extraordinarily high catalytic activity (102.8 mmol g-1 h-1) for photodriven hydrogen generation, which is attributed to the synergistic catalytic effect between the two copper ions.
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Affiliation(s)
- Ning-Yu Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Hai He
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Hao Li
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Pei-Qin Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
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10
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Liu Y, Lin C, Li B, Wang J, Wang M, Zhang N, Feng Y, Wu P. A visible-light responsive metal–organic framework as an eco-friendly photocatalyst under ambient air at room temperature. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00590h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A 2′,7′-dichlorofluorescein-based MOF as a reusable photocatalyst for the synthesis of 1,3-oxathiolane-2-imines from styrenes and NH4SCN by utilizing visible light and air as the eco-sustainable and cheapest reagents.
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Affiliation(s)
- Yanhong Liu
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- China
| | - Chen Lin
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- China
| | - Bowen Li
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- China
| | - Jian Wang
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- China
| | - Man Wang
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- China
| | - Na Zhang
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- China
| | - Yue Feng
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- China
| | - Pengyan Wu
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- China
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11
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Shi Y, Yang AF, Cao CS, Zhao B. Applications of MOFs: Recent advances in photocatalytic hydrogen production from water. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.03.012] [Citation(s) in RCA: 162] [Impact Index Per Article: 32.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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12
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Bakuru VR, DMello ME, Kalidindi SB. Metal-Organic Frameworks for Hydrogen Energy Applications: Advances and Challenges. Chemphyschem 2019; 20:1177-1215. [PMID: 30768752 DOI: 10.1002/cphc.201801147] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 02/09/2019] [Indexed: 12/19/2022]
Abstract
Hydrogen is in limelight as an environmental benign alternative to fossil fuels from few decades. To bring the concept of hydrogen economy from academic labs to real world certain challenges need to be addressed in the areas of hydrogen production, storage, and its use in fuel cells. Crystalline metal-organic frameworks (MOFs) with unprecedented surface areas are considered as potential materials for addressing the challenges in each of these three areas. MOFs combine the diverse chemistry of molecular linkers with their ability to coordinate to metal ions and clusters. The unabated flurry of research using MOFs in the context of hydrogen energy related activities in the past decade demonstrates the versatility of this class of materials. In the present review, we discuss major strategical advances that have taken place in the field of "hydrogen economy and MOFs" and point out issues requiring further attention.
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Affiliation(s)
- Vasudeva Rao Bakuru
- Materials science division, Poornaprajna Institute of Scientific Research Devanahalli, Bangalore Rural, 576164, India
| | - Marilyn Esclance DMello
- Materials science division, Poornaprajna Institute of Scientific Research Devanahalli, Bangalore Rural, 576164, India
| | - Suresh Babu Kalidindi
- Materials science division, Poornaprajna Institute of Scientific Research Devanahalli, Bangalore Rural, 576164, India
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13
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Lynch PG, Richards H, Wustholz KL. Unraveling the Excited-State Dynamics of Eosin Y Photosensitizers Using Single-Molecule Spectroscopy. J Phys Chem A 2019; 123:2592-2600. [PMID: 30835475 DOI: 10.1021/acs.jpca.9b00409] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The intersystem crossing and dispersive electron-transfer dynamics of eosin Y (EY) photosensitizers are probed using single-molecule microscopy. The blinking dynamics of EY on glass are quantified by constructing cumulative distribution functions of emissive ("on") and nonemissive ("off") events. Maximum likelihood estimation (MLE) and goodness-of-fit tests based on the Kolmogorov-Smirnov (KS) statistic are used to establish the best fit to the blinking data and differentiate among competitive photophysical processes. The on-time probability distributions for EY in N2 and air are power-law distributed after ∼1 s, with fit parameters that are significantly modified upon exposure to oxygen. By extending the statistically principled MLE/KS approach to include an onset time for log-normal behavior, we demonstrate that the off-time distribution for EY in N2 is best fit to a combination of exponential and log-normal functions. The corresponding distribution for EY in air is best fit to a log-normal function alone. Furthermore, power law and log-normal distributions are observed for an individual molecule in air, consistent with dynamic fluctuations in the rate constant for dark-state population and depopulation. These observations support the interpretation that dispersive electron transfer (i.e., the Albery model) from the first excited singlet state (S1) of EY to trap states on glass is predominately responsible for blinking in oxic conditions. In anoxic environment, both triplet-state blinking and dispersive electron transfer from S1 and the excited triplet state (T1) contribute to the excited-state dynamics of EY.
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Affiliation(s)
- Pauline G Lynch
- College of William and Mary , Department of Chemistry , P.O. Box 8795, Williamsburg , Virginia 23187 , United States
| | - Huw Richards
- College of William and Mary , Department of Chemistry , P.O. Box 8795, Williamsburg , Virginia 23187 , United States
| | - Kristin L Wustholz
- College of William and Mary , Department of Chemistry , P.O. Box 8795, Williamsburg , Virginia 23187 , United States
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14
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Kaur H, Kumar R, Kumar A, Krishnan V, Koner RR. Trifunctional metal–organic platform for environmental remediation: structural features with peripheral hydroxyl groups facilitate adsorption, degradation and reduction processes. Dalton Trans 2019; 48:915-927. [DOI: 10.1039/c8dt04180f] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A Cd(ii)-based metal–organic framework (MOF) has been demonstrated to have trifunctional properties, namely as an efficient and selective adsorbent for dyes, a visible-light-active photocatalyst for the degradation of dyes and a photocatalyst for Cr(vi) reduction.
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Affiliation(s)
- Harpreet Kaur
- School of Basics Sciences
- Indian Institute of Technology Mandi
- Mandi-175001
- India
- School of Engineering
| | - Rakesh Kumar
- School of Basics Sciences
- Indian Institute of Technology Mandi
- Mandi-175001
- India
| | - Ajay Kumar
- School of Basics Sciences
- Indian Institute of Technology Mandi
- Mandi-175001
- India
| | - Venkata Krishnan
- School of Basics Sciences
- Indian Institute of Technology Mandi
- Mandi-175001
- India
| | - Rik Rani Koner
- School of Engineering
- Indian Institute of Technology Mandi
- Mandi-175001
- India
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15
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Liu Y, Zhang F, Wu P, Deng C, Yang Q, Xue J, Shi Y, Wang J. Cobalt(II)-Based Metal–Organic Framework as Bifunctional Materials for Ag(I) Detection and Proton Reduction Catalysis for Hydrogen Production. Inorg Chem 2018; 58:924-931. [DOI: 10.1021/acs.inorgchem.8b03046] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yanhong Liu
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, China
| | - Fengjie Zhang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, China
| | - Pengyan Wu
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, China
| | - Chaofan Deng
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, China
| | - Qimeng Yang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, China
| | - Jiajia Xue
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, China
| | - Yanhui Shi
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, China
| | - Jian Wang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, China
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