1
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Hierarchical structures, surface morphology and mechanical elasticity of lamellar crystals dominated by halogen effects. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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2
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Park SA, Park JU, Kim YL, Kim JH. Transition Metal-Free, Methoxide-Catalyzed Synthesis of Pyridoindolones. J Org Chem 2021; 86:17050-17062. [PMID: 34761671 DOI: 10.1021/acs.joc.1c02176] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A simple transition metal-free strategy for the synthesis of pyrido[1,2-a]indolone derivatives has been devised through sodium methoxide-catalyzed intramolecular cyclization of 2-alkenylated N-pyrimidyl indoles. The reactions involved a Smiles rearrangement/cyclization cascade, which resulted in a new series of N-fused indoles, potentially applicable skeletons in medicinal chemistry. This reaction presents simple eco-friendly reaction conditions, a high atom- and cost-economy, a short reaction time, and a broad range of substrate scope with high reaction efficiency.
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Affiliation(s)
- Sun-A Park
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, 52828 Jinju, Korea
| | - Jong-Un Park
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, 52828 Jinju, Korea
| | - Ye Lim Kim
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, 52828 Jinju, Korea
| | - Ju Hyun Kim
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, 52828 Jinju, Korea
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3
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Zhang M, Zhang Y, Zhang H, Zeng Y, Liu G.
N
‐Heterocyclic
Carbene Copper(I) Complex Catalyzed Coupling of (Hetero)aryl Chlorides and Nitrogen Heterocycles: Highly Efficient Catalytic System. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900461] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Mengyao Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic‐Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry, Tianjin Normal University Tianjin 300387 China
| | - Yingying Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic‐Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry, Tianjin Normal University Tianjin 300387 China
| | - Huixin Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic‐Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry, Tianjin Normal University Tianjin 300387 China
| | - Yongfei Zeng
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic‐Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry, Tianjin Normal University Tianjin 300387 China
| | - Guiyan Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic‐Organic Hybrid Functional Material Chemistry (Tianjin Normal University), Ministry of Education, College of Chemistry, Tianjin Normal University Tianjin 300387 China
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4
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Xu C, Li HM, Wang ZQ, Fu WJ. A four-coordinate Cu(I)–N-heterocyclic carbene complex: Synthesis, structure, properties, and application in amination for the synthesis of 1-(2-N-heteroaryl)-1H-pyrazoles. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820921819] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A new luminescent, cationic, heteroleptic, four-coordinate Cu(I)– N-heterocyclic carbene complex [Cu(Br-Pyim)(POP)](PF6) is successfully prepared and characterized, where Br-Pyim and POP are 1-(6-bromopyridin-2-yl)imidazole-3-benzyl-2-ylidene and bis[2-(diphenylphosphino)phenyl]ether, respectively. Its detailed structure is determined by single-crystal X-ray analysis. It exists as a crystalline powder at room temperature and exhibits bright yellow-green emission. The use of the Cu(I)– N-heterocyclic carbene complex as a catalyst for amination reactions is also investigated and is found to be very efficient for the amination of 2- N-heteroaryl chlorides with pyrazoles, giving the desired substituted 1-(2- N-heteroaryl)-1 H-pyrazoles in good yields.
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Affiliation(s)
- Chen Xu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, P.R. China
| | - Hong-Mei Li
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, P.R. China
| | - Zhi-Qiang Wang
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, P.R. China
| | - Wei-Jun Fu
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, P.R. China
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5
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Peloquin AJ, Houck MB, McMillen CD, Iacono ST, Pennington WT. Perfluoropyridine as an Efficient, Tunable Scaffold for Bis(pyrazol‐1‐yl)pyridine Copper Complexes. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000150] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Andrew J. Peloquin
- Department of Chemistry Clemson University 219 Hunter Laboratories 29634 Clemson SC USA
| | - Matthew B. Houck
- Department of Chemistry & Chemistry Research Center Laboratories for Advanced Materials United States Air Force Academy 2355 Fairchild Dr., Suite 2N‐225 80840 Colorado Springs CO USA
| | - Colin D. McMillen
- Department of Chemistry Clemson University 219 Hunter Laboratories 29634 Clemson SC USA
| | - Scott T. Iacono
- Department of Chemistry & Chemistry Research Center Laboratories for Advanced Materials United States Air Force Academy 2355 Fairchild Dr., Suite 2N‐225 80840 Colorado Springs CO USA
| | - William T. Pennington
- Department of Chemistry Clemson University 219 Hunter Laboratories 29634 Clemson SC USA
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6
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Sasabe H, Kato Y, Watanabe Y, Ohsawa T, Aizawa N, Fujiwara W, Pu YJ, Katagiri H, Kido J. Room-Temperature Phosphorescence from a Series of 3-Pyridylcarbazole Derivatives. Chemistry 2019; 25:16294-16300. [PMID: 31573108 DOI: 10.1002/chem.201903100] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 09/30/2019] [Indexed: 11/08/2022]
Abstract
Exploration of pure metal-free organic molecules that exhibit strong room-temperature phosphorescence (RTP) is an emerging research topic. In this regard, unveiling the design principles for an efficient RTP molecule is an essential, but challenging, task. A small molecule is an ideal platform to precisely understand the fundamental role of each functional component because the parent molecule can be easily derivatized. Here, the RTP behaviors of a series of 3-pyridylcarbazole derivatives are presented. Experimental studies in combination with theoretical calculations reveal the crucial role of the n orbital on the central pyridine ring in the dramatic enhancement of the intersystem crossing between the charge-transfer-excited singlet state and the locally excited triplet states. Single-crystal X-ray crystallographic studies apparently indicate that both the pyridine ring and fluorine atom contribute to the enhancement of the RTP because of the restricted motion owing to weak C-H⋅⋅⋅N and H⋅⋅⋅F hydrogen-bonding interactions. The single crystal of the fluorine-substituted derivative shows an ultra-long phosphorescent lifetime (τP ) of 1.1 s and a phosphorescence quantum yield (ΦP ) of 1.2 %, whereas the bromine-substituted derivative exhibits τP of 0.15 s with a ΦP of 7.9 %. We believe that this work provides a fundamental and universal guideline for the generation of pure organic molecules exhibiting strong RTP.
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Affiliation(s)
- Hisahiro Sasabe
- Research Center for Organic Electronics (ROEL) and Frontier Center for Organic Materials (FROM), Yamagata University, 4-3-16 Jonan, Yonezawa Yamagata, 992-8510, Japan.,Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Yuki Kato
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Yuichiro Watanabe
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Tatsuya Ohsawa
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Naoya Aizawa
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.,PRESTO (Japan) Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Wataru Fujiwara
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Yong-Jin Pu
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Hiroshi Katagiri
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Junji Kido
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
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7
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Wang Z, Sun X, Xu C, Ji B. Synthesis, Structures, and Photophysical Properties of Novel Four-Coordinate Cu(I) Complexes Supported by Chelating N-Heterocyclic Carbene Ligands. Front Chem 2019; 7:422. [PMID: 31231640 PMCID: PMC6561309 DOI: 10.3389/fchem.2019.00422] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 05/21/2019] [Indexed: 01/09/2023] Open
Abstract
Luminescent Cu(I) complexes are promising emitting materials for electroluminescent devices due to their low cost and abundant resources, as well as high emission efficiency. It is well-known that N-heterocyclic carbenes (NHCs) are excellent ligands for transition metal complexes. To investigate the photophysical properties of Cu(I)-NHC complexes, a series of new mononuclear four-coordinate Cu(I) complexes supported by the diphosphine ligand bis[2-(diphenylphosphino)phenyl]ether (POP) and the NHC ligands, consisting of imidazolylidene and pyrimidine units, were synthesized and fully characterized. To tune the photophysical properties of these Cu(I)-NHC complexes, the NHC ligands were attached with electron-withdrawing/donating groups (fluorine, chlorine, methyl and methoxyl) at the pyrimidine unit. All of these Cu(I)-NHC complexes adopt the typical distorted tetrahedral configuration. The electron-donating groups can lead to shorter Cu–N bond distances and longer Cu–C bond distances compared to the electron-withdrawing groups. Theoretical calculation results show that the highest occupied molecular orbitals are mainly distributed on the Cu(I) ion, POP, and carbene unit, while the lowest unoccupied molecular orbitals are mostly located on the pyrimidine unit of NHC ligands. The lowest energy electronic transitions of these Cu(I)-NHC complexes are mainly the metal-to-ligand charge transfer transition and ligand-to-ligand charge transfer transition. These Cu(I)-NHC complexes in solid state show tunable emissions from 530 to 618 nm with efficiencies of 0.5–38.1% at room temperature. The photophysical behaviors of these complexes at 298 and 50 K match well with the thermally activated delayed fluorescence (TADF) characteristics.
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Affiliation(s)
- Zhiqiang Wang
- College of Chemistry and Chemical Engineering and Henan Key Laboratory of Function-Oriented Porous Materials, Luoyang Normal University, Luoyang, China
| | - Xiaojuan Sun
- College of Chemistry and Chemical Engineering and Henan Key Laboratory of Function-Oriented Porous Materials, Luoyang Normal University, Luoyang, China
| | - Chen Xu
- College of Food and Pharmacy, Luoyang Normal University, Luoyang, China
| | - Baoming Ji
- College of Chemistry and Chemical Engineering and Henan Key Laboratory of Function-Oriented Porous Materials, Luoyang Normal University, Luoyang, China
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8
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Galadzhun I, Capel Berdiell I, Shahid N, Halcrow MA. An iron( ii) coordination polymer of a triazolyl tris-heterocycle showing a spin state conversion triggered by loss of lattice solvent. CrystEngComm 2019. [DOI: 10.1039/c9ce01496a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solvated crystals of “[FeL2][BF4]2·H2O” (L = 2-(1,2,4-triazol-1-yl)-6-(pyrazol-1-yl)pyridine) contain a 1D coordination polymer [Fe(μ-L)2{Fe(OH2)2L2}][BF4]4, with κ1:κ3,μ-L coordination.
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Affiliation(s)
| | | | - Namrah Shahid
- School of Chemistry
- University of Leeds
- Leeds LS2 9JT
- UK
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9
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Tanii S, Arisawa M, Tougo T, Yamaguchi M. Catalytic Method for the Synthesis of C-N-Linked Bi(heteroaryl)s Using Heteroaryl Ethers and N-Benzoyl Heteroarenes. Org Lett 2018. [PMID: 29528237 DOI: 10.1021/acs.orglett.8b00245] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
C-N-linked bi(heteroaryl)s are synthesized by a rhodium-catalyzed N-heteroarylation reaction of N-benzoyl heteroarenes including azoles/azolones, pyridones, cyclic ureas, and cyclic imides using heteroaryl aryl ethers. The reaction involves the covalent bond-exchange reaction of N-CO and HetAr-O bonds without using metal bases and exhibits a broad applicability, giving diverse C-N-linked bi(heteroaryl)s containing five- and six-membered heteroarenes. The N-heteroarylation of N-H azoles/azolones and pyridone proceeds at higher reaction temperatures.
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Affiliation(s)
- Saori Tanii
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba, Sendai 980-8578 , Japan
| | - Mieko Arisawa
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba, Sendai 980-8578 , Japan
| | - Takaya Tougo
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba, Sendai 980-8578 , Japan
| | - Masahiko Yamaguchi
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba, Sendai 980-8578 , Japan
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10
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Ghazanfarpour-Darjani M, Barat-Seftejani F, Khalaj M, Mousavi-Safavi SM. Synthesis of N
-alkyl-N
′-aryl or Alkenylpiperazines: A Copper-Catalyzed C-N Cross-Coupling in the Presence of Aryl and Alkenyl Triflates and DABCO. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201700082] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Majid Ghazanfarpour-Darjani
- Young Researchers and Elite Club; Islamic Azad University; P.O. Box 14115-175 Buin Zahra Branch Buin Zahra Iran
| | - Forugh Barat-Seftejani
- Young Researchers and Elite Club; Islamic Azad University; P.O. Box 14115-175 Buin Zahra Branch Buin Zahra Iran
| | - Mehdi Khalaj
- Young Researchers and Elite Club; Islamic Azad University; P.O. Box 14115-175 Buin Zahra Branch Buin Zahra Iran
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11
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Cabrero-Antonino M, Ballesteros-Garrido R, Chiassai L, Escrivà E, Ramirez de Arellano C, Ballesteros R, Abarca B. Synthesis of new terpyridine-like ligands based on triazolopyridines and benzotriazoles. NEW J CHEM 2017. [DOI: 10.1039/c7nj00962c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Herein, terpyridine triazole-based analogs bearing benzotriazoles or/and triazolopyridines are prepared via copper catalysis, where the arrangement of the nitrogen atoms is proven to be crucial to the spectroscopic properties of these ligands.
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Affiliation(s)
- M. Cabrero-Antonino
- Universitat de Valencia
- Facultat de Farmacia Dpto Química Organica
- 46100 Burjassot
- Spain
| | - R. Ballesteros-Garrido
- Universitat de Valencia
- Facultat de Farmacia Dpto Química Organica
- 46100 Burjassot
- Spain
- ICMol
| | - L. Chiassai
- Universitat de Valencia
- Facultat de Farmacia Dpto Química Organica
- 46100 Burjassot
- Spain
| | - E. Escrivà
- Universitat de Valencia
- Facultat de Farmacia Dpto Química Inorganica
- 46100 Burjassot
- Spain
| | - C. Ramirez de Arellano
- Universitat de Valencia
- Facultat de Farmacia Dpto Química Organica
- 46100 Burjassot
- Spain
- Centro de Innovación en Química Avanzada (ORFEO−CINQA)
| | - R. Ballesteros
- Universitat de Valencia
- Facultat de Farmacia Dpto Química Organica
- 46100 Burjassot
- Spain
| | - B. Abarca
- Universitat de Valencia
- Facultat de Farmacia Dpto Química Organica
- 46100 Burjassot
- Spain
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12
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Strohecker DJ, Lynch VM, Holliday BJ, Jones RA. Synthesis and electronic investigation of mono- and di-substituted 4-nitro- and 4-amino-pyrazol-1-yl bis(pyrazol-1-yl)pyridine-type ligands and luminescent Eu(iii) derivatives. Dalton Trans 2017; 46:7733-7742. [DOI: 10.1039/c7dt01153a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of nitro- and amino-bis(pyrazol-1-yl)pyridines was achieved, allowing for tuning of frontier orbital energies and Eu(iii) complex spectroscopic investigations.
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Affiliation(s)
- D. J. Strohecker
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - V. M. Lynch
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | | | - R. A. Jones
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
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13
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“Fiddler crab-type” imidazolium salt as remote substituents tuning organocatalyst for the cycloaddition of epoxides with carbon dioxide. J CO2 UTIL 2016. [DOI: 10.1016/j.jcou.2016.10.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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