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Jia Y, Jiang Q, Gan H, Wang B, He X, Zhou J, Ma Z, Zhang J, Ma Y. Band-like transport in solution-processed perylene diimide dianion films with high Hall mobility. Natl Sci Rev 2024; 11:nwae087. [PMID: 38606386 PMCID: PMC11008685 DOI: 10.1093/nsr/nwae087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/27/2024] [Accepted: 03/06/2024] [Indexed: 04/13/2024] Open
Abstract
It is crucial to prepare high-mobility organic polycrystalline film through solution processing. However, the delocalized carrier transport of polycrystalline films in organic semiconductors has rarely been investigated through Hall-effect measurement. This study presents a strategy for building strong intermolecular interactions to fabricate solution-crystallized p-type perylene diimide (PDI) dianion films with a closer intermolecular π-π stacking distance of 3.25 Å. The highly delocalized carriers enable a competitive Hall mobility of 3 cm2 V-1 s-1, comparable to that of the reported high-mobility organic single crystals. The PDI dianion films exhibit a high electrical conductivity of 17 S cm-1 and typical band-like transport, as evidenced by the negative temperature linear coefficient of mobility proportional to T-3/2. This work demonstrates that, as the intermolecular π-π interactions become strong enough, they will display high mobility and conductivity, providing a new approach to developing high-mobility organic semiconductor materials.
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Affiliation(s)
- Yanhua Jia
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Qinglin Jiang
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Hanlin Gan
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Bohan Wang
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Xiandong He
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Jiadong Zhou
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Zetong Ma
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Jiang Zhang
- Department of Physics, South China University of Technology, Guangzhou 510640, China
| | - Yuguang Ma
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
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Zhao Y, Cui M, Lyu Y, Gao W, Cui X, Zhang C, Meng Q. External Electric Field Effects on AFM-like Magnetism in Nitroxide-Functionalized C +:C Base Pair. J Chem Inf Model 2023; 63:2037-2046. [PMID: 36962515 DOI: 10.1021/acs.jcim.2c01489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2023]
Abstract
In this work, we computationally designed a set of nitroxide diradical base pairs (rC+:rC) to propose promising magnetic building blocks for spintronic or magnetic molecular materials. C+:C12 is found to possess a considerably large antiferromagnetic-like (AFM-like) spin-coupling magnitude (J = -3286.681 cm-1) and sensitive magnetic responses to the external electric field. Especially, the presence of the Y direction field that is oriented perpendicular to intermolecular hydrogen bonds has the greatest influence on the magnetic exchange interaction (J being from -2549.578 to -4231.286 cm-1, ΔJY = 1681.708 cm-1), which could be understood by two simultaneously occurring effects. On the one hand, the external electric field in the -Y direction can regulate the charge polarization of negative and positive electrostatic potentials on C12 moiety and further facilitate the spin transport property. On the other hand, with increasing electric field strength on the -Y axis, the spin density on diradical sources diminishes and that on the coupler increases, which can lead to a homogenous spin-density distribution. The achieved understanding provides a new strategy for designing self-assembly magnetic nanomaterials or nanodevices and enhancing the AFM coupling through the assistance of external electric field.
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Affiliation(s)
- Yu Zhao
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Menglu Cui
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Yongkang Lyu
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Wen Gao
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Xixi Cui
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Changzhe Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Qingtian Meng
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
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Roncero-Barrero C, Ribas-Ariño J, Moreira IDPR, Deumal M. Magnetic coupling and spin ordering in bisdithiazolyl, thiaselenazolyl, and bisdiselenazolyl molecular materials. Dalton Trans 2022; 51:13032-13045. [PMID: 35968924 DOI: 10.1039/d2dt01340a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of purely organic materials is a promising approach for the miniaturization of devices due to their interesting optical, electronic and magnetic properties. Bisdithiazolyl-based bisDTA compounds have emerged as promising candidates for radical-based single component conductors exhibiting simultaneously magnetic properties. Our computational work focuses on the intriguing magnetism of 4 isostructural pyridine-bridged bisDTA-multifunctional materials triggered by their magnetic and conducting properties being strongly dependent on the different S/Se ratios in the neutral radical skeleton: specifically, bisdithiazolyl (S,S) displays no magnetic order at low temperatures, thiaselenazolyl (Se,S) exhibits spin-canted antiferromagnetism (AFM), and both (S,Se) and bisdiselenazolyl (Se,Se) behave as bulk ferromagnets (FM). Our results reveal that (1) the magnetic response depends on the existence of an intricate network of both AFM and FM spin exchange JAB couplings between neighbouring radicals; and (2) the structural arrangement of π-stacked pairs of radicals sits on a point in the configurational space that is very close to a crossover region where JAB switches from AFM to FM. Indeed, for bulk FM, the experimental response is only accounted for when considering an ab initio optimised crystal structure able to portray adequately the electronic structure of bisDTAs in the region close to the temperature at which magnetic ordering emerges. Magneto-structural correlation maps show the large sensitivity of JAB to very small structural changes with temperature along the π-stacks that lead to drastic changes in the magnetic properties. Clearly, the understanding of magnetism in the title bisDTA compounds is decisive to rationally tailor the properties of multifunctional materials by subtle structural modifications of their crystal packing.
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Affiliation(s)
- C Roncero-Barrero
- Secció Química Física, Dept. Ciència de Materials i Química Física, and Institut de Química Teòrica i Computacional IQTCUB, Universitat de Barcelona, Martí i Franquès, 1, E08028 Barcelona, Spain.
| | - J Ribas-Ariño
- Secció Química Física, Dept. Ciència de Materials i Química Física, and Institut de Química Teòrica i Computacional IQTCUB, Universitat de Barcelona, Martí i Franquès, 1, E08028 Barcelona, Spain.
| | - I de P R Moreira
- Secció Química Física, Dept. Ciència de Materials i Química Física, and Institut de Química Teòrica i Computacional IQTCUB, Universitat de Barcelona, Martí i Franquès, 1, E08028 Barcelona, Spain.
| | - M Deumal
- Secció Química Física, Dept. Ciència de Materials i Química Física, and Institut de Química Teòrica i Computacional IQTCUB, Universitat de Barcelona, Martí i Franquès, 1, E08028 Barcelona, Spain.
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4
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Molčanov K, Milašinović V, Kojić-Prodić B, Maltar-Strmečki N, You J, Šantić A, Kanižaj L, Stilinović V, Fotović L. Semiconductive 2D arrays of pancake-bonded oligomers of partially charged TCNQ radicals. IUCRJ 2022; 9:449-467. [PMID: 35844480 PMCID: PMC9252159 DOI: 10.1107/s2052252522004717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 05/03/2022] [Indexed: 06/15/2023]
Abstract
Multicentre two-electron (mc/2e or 'pancake bonding') bonding between 7,7,8,8-tetra-cyano-quinodi-methane (TCNQ) radical anions was studied on its 14 novel salts with planar organic cations. The formal charges of the TCNQδ- moieties are -1/2 and -2/3, and they form mc/2e bonded dimers, trimers and tetramers which are further stacked into extended arrays. Multicentre bonding within these oligomers is characterized by short interplanar separations of 2.9-3.2 Å; distances between the oligomers are larger, typically >3.3 Å. The stacks are laterally connected by C-H⋯N hydrogen bonding, forming 2D arrays. The nature of mc/2e bonding is characterized by structural, magnetic and electrical data. The compounds are found to be semiconductors, and high conductivity [10-2 (Ω cm)-1] correlates with short interplanar distances between pancake-bonded oligomers.
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Affiliation(s)
- Krešimir Molčanov
- Department of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, Croatia
| | - Valentina Milašinović
- Department of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, Croatia
| | - Biserka Kojić-Prodić
- Department of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, Croatia
| | - Nadica Maltar-Strmečki
- Department of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, Croatia
| | - Jiangyang You
- Department of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, Croatia
| | - Ana Šantić
- Department of Materials Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, Croatia
| | - Lidija Kanižaj
- Department of Materials Physics, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, Croatia
| | - Vladimir Stilinović
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb HR-10000, Croatia
| | - Luka Fotović
- Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb HR-10000, Croatia
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Roncero-Barrero C, Ribas-Ariño J, Deumal M, Moreira IDPR. Electronic structure and magnetic coupling in selenium substituted pyridine-bridged bisdithiazolyl multifunctional molecular materials. Phys Chem Chem Phys 2022; 24:12196-12207. [PMID: 35551353 DOI: 10.1039/d2cp00415a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Bisdithiazolyl radicals have furnished in recent years multiple examples of molecular materials with promising conductive and magnetic properties. The electronic band structure and magnetic ordering in four different isostructural pyridine-bridged bisdithiazolyl and Selenium substituted compounds have been studied by means of hybrid DFT based methods as implemented in the CRYSTAL code. The full rationalization of the properties of these multifunctional magnetic molecular materials requires a careful description of their complex open-shell electronic structure. The results describe the systems as narrow band (0.2-0.3 eV dispersion) open-shell semiconductors with a gap of 1.15-1.40 eV between the valence and conducting bands. The bands defining the insulating gap are dominated by orbital contributions arising from the heteroatoms sitting in the outer rings. A low energy closed-shell metallic solution is found at 0.25-0.35 eV above the magnetic solutions thus suggesting a complex mechanism for electric conduction with band and hopping contributions. The observed trend of the conductivity is in line with the variation of the insulating gap but more rigorous modelling is required to take into account the details of the band structure of the systems. For all the systems the spin density is well localised on the molecular units and is independent of the magnetic solution. Thus the system can be described as an ensemble of well-defined S = 1/2 magnetic centres using a two-body Heisenberg-Dirac-van Vleck spin Hamiltonian. The lowest energy electronic solutions are in line with the observed magnetic behaviour at low temperature. The set of competing magnetic exchange interactions that emerges from using a suitable mapping to consistently describe the low energy magnetic solutions explains the variety of magnetic responses (absence of long-range magnetic order, antiferromagnetism or ferromagnetism) of the four studied compounds at low temperatures.
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Affiliation(s)
- Cristina Roncero-Barrero
- Departament de Ciència de Materials i Química Física, Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain.,Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Jordi Ribas-Ariño
- Departament de Ciència de Materials i Química Física, Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain.,Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Mercè Deumal
- Departament de Ciència de Materials i Química Física, Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain.,Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Ibério de P R Moreira
- Departament de Ciència de Materials i Química Física, Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain.,Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain
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Sato R, Gouchi J, Uwatoko Y, Matsuda M. Phthalocyanine-based Radicals as Single-component Molecular Conductors. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ryoya Sato
- Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto, Kumamoto 860-8555
| | - Jun Gouchi
- Institute for Solid State Physics, the University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581
| | - Yoshiya Uwatoko
- Institute for Solid State Physics, the University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581
| | - Masaki Matsuda
- Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto, Kumamoto 860-8555
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7
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Li WP, Cheng G, Li SY, Lin CZ, Guan XY, Bing DX, Cao J, Zhu D, Deng QH. Acid-Free Copper-Catalyzed Electrophilic Nitration of Electron-Rich Arenes with Guanidine Nitrate. J Org Chem 2022; 87:3834-3840. [PMID: 35168320 DOI: 10.1021/acs.joc.1c03020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A practical copper-catalyzed nitration of electron-rich arenes with trimethylsilyl chloride and guanidine nitrate is reported. A variety of nitrated products were generated in moderate to excellent yields (32-99%) at ambient temperature under acid-free, open-flask, and operationally simple conditions.
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Affiliation(s)
- Wen-Pei Li
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Guo Cheng
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Si-Yuan Li
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Cheng-Zhou Lin
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Xiao-Yu Guan
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - De-Xian Bing
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Jing Cao
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Di Zhu
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Qing-Hai Deng
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
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8
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Wang J, Ruan H, Hu Z, Wang W, Zhao Y, Wang X. Indeno[2,1-a]fluorene-11,12-dione radical anions:synthesis,characterization and property. Chemistry 2021; 28:e202103897. [PMID: 34928531 DOI: 10.1002/chem.202103897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Indexed: 11/08/2022]
Abstract
The one-electron reduction reactions of indeno[2,1-a]fluorene-11,12-dione ( IF ) with various alkali metals bring about the radical anion salts. The different structures and properties are characterized by single crystal X-ray diffraction, electron paramagnetic resonance (EPR) spectroscopy, superconducting quantum interference device (SQUID) measurements and physical property measurement system (PPMS). IF •- K + (18-c-6) is regarded as a one-dimensional magnetic chain through C-H-C interaction. Theoretical calculations and magnetic results prove that [ IF •- K + (15-c-5)] 2 is a dimer with an open-shell ground state. IF •- Na + (15-c-5) and IF •- K + (cryptand) are monoradical anion salts. IF 2 •- Li + possesses unique π-stack structure with an interplanar separation less than 3.46 Å, making it a semiconductor ( δ RT = 1.9 Χ 10 -4 S•cm -1 ). This work gives a wealth of insights into multifunctional radical anions, and makes the design and development of different functional radicals attractive.
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Affiliation(s)
- Jie Wang
- Nanjing University, School of Chemistry and Chemical Engineering, CHINA
| | - Huapeng Ruan
- Nanjing University, School of Chemistry and Chemical Engineering, CHINA
| | - Zhaobo Hu
- JiangXi University of Science and Technology, Faculty of Materials metallurgy and Chemistry, CHINA
| | - Wenqing Wang
- Anhui Normal University, college of chemistry and material science, CHINA
| | - Yue Zhao
- Nanjing University, School of Chemistry and Chemical Engineering, CHINA
| | - Xinping Wang
- Nanjing University, Chemistry, Xianlin Ave 163, 210023, Nanjing, CHINA
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Benzo[1,2,3]dithiazole Compounds: A History of Synthesis and Their Renewed Applicability in Materials and Synthetic Chemistry, Originating from the Herz Reaction. REACTIONS 2021. [DOI: 10.3390/reactions2030013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The benzo[1,2,3]dithiazole is a unique heteroaromatic functionality whose conjugated profile instils some fascinating electronic properties. This has been historically recognized in the design and manufacture of organic dyes early last century. Although, with the benefit of increased diagnostic techniques and improved understanding, these structures are attracting greater attention in additional research settings, including applications as organic radicals and semiconductors. In addition, the benzodithiazole functionality has been shown to be a valuable synthetic intermediate in the preparation of a variety of other privileged aromatic and heteroaromatic targets, many of which are important APIs. In this review, the authors aim to critically analyse the potential applicability of these compounds to the fields of not only small-scale laboratory synthetic and medicinal chemistry but also commercial-scale processes and increasingly materials chemistry.
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11
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Velho MFG, Silva RAL, Brotas G, Lopes EB, Santos IC, Charas A, Belo D, Almeida M. Conducting neutral gold bisdithiolene complex [Au(dspdt) 2]˙. Dalton Trans 2020; 49:13737-13743. [PMID: 32996958 DOI: 10.1039/d0dt02931a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[Au(dspdt)2] (dspdt = 2,3-dihydro-5,6-selenophenedithiolate) is an unprecedented example of a neutral gold bisdithiolene complex with a unique structure composed of interacting dimer and trimer chains displaying relatively high electrical conductivity (0.1 S cm-1 at room temperature).
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Affiliation(s)
- Mariana F G Velho
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, P-2695-066 Bobadela LRS, Portugal. and Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais 1, P-1049-001, Lisboa, Portugal
| | - Rafaela A L Silva
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, P-2695-066 Bobadela LRS, Portugal.
| | - Graça Brotas
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, P-2695-066 Bobadela LRS, Portugal.
| | - Elsa B Lopes
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, P-2695-066 Bobadela LRS, Portugal. and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, P-2695-066 Bobadela LRS, Portugal
| | - Isabel C Santos
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, P-2695-066 Bobadela LRS, Portugal. and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, P-2695-066 Bobadela LRS, Portugal
| | - Ana Charas
- Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais 1, P-1049-001, Lisboa, Portugal
| | - Dulce Belo
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, P-2695-066 Bobadela LRS, Portugal. and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, P-2695-066 Bobadela LRS, Portugal
| | - Manuel Almeida
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, P-2695-066 Bobadela LRS, Portugal. and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, E.N. 10, P-2695-066 Bobadela LRS, Portugal
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Baranovsky IV, Konstantinova LS, Tolmachev MA, Popov VV, A. Lyssenko K, Rakitin OA. Synthesis of 2-((2-(Benzo[d]oxazol-2-yl)-2 H-imidazol-4-yl)amino)-phenols from 2-((5 H-1,2,3-Dithiazol-5-ylidene)amino)phenols through Unprecedented Formation of Imidazole Ring from Two Methanimino Groups. Molecules 2020; 25:molecules25173768. [PMID: 32824981 PMCID: PMC7504547 DOI: 10.3390/molecules25173768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/14/2020] [Accepted: 08/18/2020] [Indexed: 11/23/2022] Open
Abstract
A new synthetic pathway to four substituted imidazoles from readily available 2-((4-aryl(thienyl)-5H-1,2,3-dithiazol-5-ylidene)amino)phenols has been developed. Benzo[d]oxazol-2-yl(aryl(thienyl))methanimines were proved as key intermediates in their synthesis. The formation of an imidazole ring from two methanimine derivatives likely includes the opening of one benzoxazole ring followed by ring closure by intermolecular nucleophilic attack of the N-methanimine atom to a carbon atom of another methanimine.
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Affiliation(s)
- Ilia V. Baranovsky
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (I.V.B.); (L.S.K.); (M.A.T.)
| | - Lidia S. Konstantinova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (I.V.B.); (L.S.K.); (M.A.T.)
- Nanotechnology Education and Research Center, South Ural State University, 454080 Chelyabinsk, Russia;
| | - Mikhail A. Tolmachev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (I.V.B.); (L.S.K.); (M.A.T.)
| | - Vadim V. Popov
- Nanotechnology Education and Research Center, South Ural State University, 454080 Chelyabinsk, Russia;
| | - Konstantin A. Lyssenko
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskiye Gory, 1, 119991 Moscow, Russia;
- G. V. Plekhanov Russian University of Economics, 36 Stremyanny Per., 117997 Moscow, Russia
| | - Oleg A. Rakitin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia; (I.V.B.); (L.S.K.); (M.A.T.)
- Nanotechnology Education and Research Center, South Ural State University, 454080 Chelyabinsk, Russia;
- Correspondence: ; Tel.: +7-499-135-5327
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13
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Volkova YM, Makarov AY, Pritchina EA, Gritsan NP, Zibarev AV. Herz radicals: chemistry and materials science. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Fu X, Han H, Zhang D, Yu H, He Q, Zhao D. A polycyclic aromatic hydrocarbon diradical with pH-responsive magnetic properties. Chem Sci 2020; 11:5565-5571. [PMID: 32874500 PMCID: PMC7441688 DOI: 10.1039/d0sc00770f] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 05/11/2020] [Indexed: 12/17/2022] Open
Abstract
By integrating azulene with a quinoid moiety, a novel non-alternant polycyclic aromatic hydrocarbon molecule BCHF1 exhibiting manifold zwitterionic, quinoidal and diradical behaviors is designed and synthesized. Its zwitterionic feature is evidenced by the changes shown by the 1H-NMR and absorption spectra when the molecule undergoes reversible protonation and deprotonation reactions at varied pH. The diradical facet, manifesting a small singlet-triplet energy gap (ΔE S-T), is characterized with a paramagnetic resonance signal detected by the EPR spectroscopy at room temperature. As the diradical properties are not observed in the protonated form, BCHF1+H+ , a pH-controlled reversible magnetic switching behavior is illustrated by monitoring the on and off cycles of EPR signals upon successively adding bases and acids to a solution or exposing a thin film of BCHF1+H+ to base vapor followed by acid vapor.
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Affiliation(s)
- Xiangyu Fu
- Beijing National Laboratory for Molecular Sciences , Centre for the Soft Matter Science and Engineering , Key Lab of Polymer Chemistry & Physics of the Ministry of Education , College of Chemistry , Peking University , Beijing , 100871 , China .
| | - Han Han
- Beijing National Laboratory for Molecular Sciences , Centre for the Soft Matter Science and Engineering , Key Lab of Polymer Chemistry & Physics of the Ministry of Education , College of Chemistry , Peking University , Beijing , 100871 , China .
| | - Di Zhang
- Beijing National Laboratory for Molecular Sciences , Centre for the Soft Matter Science and Engineering , Key Lab of Polymer Chemistry & Physics of the Ministry of Education , College of Chemistry , Peking University , Beijing , 100871 , China .
| | - Han Yu
- Beijing National Laboratory for Molecular Sciences , Centre for the Soft Matter Science and Engineering , Key Lab of Polymer Chemistry & Physics of the Ministry of Education , College of Chemistry , Peking University , Beijing , 100871 , China .
| | - Qilin He
- Beijing National Laboratory for Molecular Sciences , Centre for the Soft Matter Science and Engineering , Key Lab of Polymer Chemistry & Physics of the Ministry of Education , College of Chemistry , Peking University , Beijing , 100871 , China .
| | - Dahui Zhao
- Beijing National Laboratory for Molecular Sciences , Centre for the Soft Matter Science and Engineering , Key Lab of Polymer Chemistry & Physics of the Ministry of Education , College of Chemistry , Peking University , Beijing , 100871 , China .
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15
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Mangham B, Hanson-Heine MWD, Davies ES, Wriglesworth A, George MW, Lewis W, Kays DL, McMaster J, Besley NA, Champness NR. Influence of molecular design on radical spin multiplicity: characterisation of BODIPY dyad and triad radical anions. Phys Chem Chem Phys 2020; 22:4429-4438. [PMID: 32051990 DOI: 10.1039/c9cp06427c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A strategy to create organic molecules with high degrees of radical spin multiplicity is reported in which molecular design is correlated with the behaviour of radical anions in a series of BODIPY dyads. Upon reduction of each BODIPY moiety radical anions are formed which are shown to have different spin multiplicities by electron paramagnetic resonance (EPR) spectroscopy and distinct profiles in their cyclic voltammograms and UV-visible spectra. The relationship between structure and multiplicity is demonstrated showing that the balance between singlet, biradical or triplet states in the dyads depends on relative orientation and connectivity of the BODIPY groups. The strategy is applied to the synthesis of a BODIPY triad which adopts an unusual quartet state upon reduction to its radical trianion.
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Affiliation(s)
- Barry Mangham
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, UK.
| | | | - E Stephen Davies
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, UK.
| | | | - Michael W George
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, UK. and Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, 199 Taikang East Road, Ningbo 315100, China
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, UK.
| | - Deborah L Kays
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, UK.
| | - Jonathan McMaster
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, UK.
| | - Nicholas A Besley
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, UK.
| | - Neil R Champness
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, UK.
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16
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Mailman A, Robertson CM, Winter SM, Dube PA, Oakley RT. The Importance of Electronic Dimensionality in Multiorbital Radical Conductors. Inorg Chem 2019; 58:6495-6506. [PMID: 31021620 DOI: 10.1021/acs.inorgchem.9b00691] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The exceptional performance of oxobenzene-bridged bis-1,2,3-dithiazolyls 6 as single-component neutral radical conductors arises from the presence of a low-lying π-lowest unoccupied molecular orbital, which reduces the potential barrier to charge transport and increases the kinetic stabilization energy of the metallic state. As part of ongoing efforts to modify the solid-state structures and transport properties of these so-called multiorbital materials, we report the preparation and characterization of the acetoxy, methoxy, and thiomethyl derivatives 6 (R = OAc, OMe, SMe). The crystal structures are based on ribbonlike arrays of radicals laced together by S···N' and S···O' secondary bonding interactions. The steric and electronic effects of the exocyclic ligands varies, affording one-dimensional (1D) π-stacked radicals for R = OAc, 1D cofacial dimer π-stacks for R = SMe, and a pseudo two-dimensional (2D) brick-wall arrangement for R = OMe. Variable-temperature magnetic and conductivity measurements reveal strong antiferromagnetic interactions and Mott insulating behavior for the two radical-based structures (R = OAc, OMe), with lower room-temperature conductivities (σRT ≈ 1 × 10-4 and ∼1 × 10-3 S cm-1, respectively) and higher thermal activation energies ( Eact = 0.24 and 0.21 eV, respectively) than found for the ideal 2D brick-wall structure of 6 (R = F), where σRT ≈ 1 × 10-2 S cm-1 and Eact = 0.10 eV. The performance of R = OMe, OAc relative to that of R = F, is consistent with the results of density functional theory band electronic structure calculations, which indicate a lower kinetic stabilization energy of the putative metallic state arising from their reduced electronic dimensionality.
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Affiliation(s)
- Aaron Mailman
- Department of Chemistry , University of Jyväskylä , P.O. Box 35, Jyväskylä , Finland.,Department of Chemistry , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
| | - Craig M Robertson
- Department of Chemistry , University of Liverpool , Liverpool L69 7ZD , United Kingdom
| | - Stephen M Winter
- Institut für Theoretische Physik , Goethe-Universität , Frankfurt am Main 60438 , Germany
| | - Paul A Dube
- Brockhouse Institute for Materials Research , McMaster University , Hamilton , Ontario L8S 4M1 , Canada
| | - Richard T Oakley
- Department of Chemistry , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
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17
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Beldjoudi Y, Arauzo A, Campo J, Gavey EL, Pilkington M, Nascimento MA, Rawson JM. Structural, Magnetic, and Optical Studies of the Polymorphic 9'-Anthracenyl Dithiadiazolyl Radical. J Am Chem Soc 2019; 141:6875-6889. [PMID: 30875208 DOI: 10.1021/jacs.8b11528] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The fluorescent 9'-anthracenyl-functionalized dithiadiazolyl radical (3) exhibits four structurally determined crystalline phases, all of which are monomeric in the solid state. Polymorph 3α (monoclinic P21/ c, Z' = 2) is isolated when the radical is condensed onto a cold substrate (enthalpically favored polymorph), whereas 3β (orthorhombic P21 21 21, Z' = 3) is collected on a warm substrate (entropically favored polymorph). The α and β polymorphs exhibit chemically distinct structures with 3α exhibiting face-to-face π-π interactions between anthracenyl groups, while 3β exhibits edge-to-face π-π interactions. 3α undergoes an irreversible conversion to 3β on warming to 120 °C (393 K). The β-phase undergoes a series of reversible solid-state transformations on cooling; below 300 K a phase transition occurs to form 3γ (monoclinic P21/ c, Z' = 1), and on further cooling below 165 K, a further transition is observed to 3δ (monoclinic P21/ n, Z' = 2). Both 3β → 3γ and 3γ → 3δ transitions are reversible (single-crystal X-ray diffraction), and the 3γ → 3δ process exhibits thermal hysteresis with a clear feature observed by heat capacity measurements. Heating 3β above 160 °C generates a fifth polymorph (3ε) which is distinct from 3α-3δ based on powder X-ray diffraction data. The magnetic behavior of both 3α and the 3β/3γ/3δ system reflect an S = 1/2 paramagnet with weak antiferromagnetic coupling. The reversible 3δ ↔ 3γ phase transition exhibits thermal hysteresis of 20 K. Below 50 K, the value of χm T for 3δ approaches 0 emu·K·mol-1 consistent with formation of a gapped state with an S = 0 ground-state configuration. In solution, both paramagnetic 3 and diamagnetic [3][GaCl4] exhibit similar absorption and emission profiles reflecting similar absorption and emission mechanisms for paramagnetic and diamagnetic forms. Both emit in the deep-blue region of the visible spectrum (λem ∼ 440 nm) upon excitation at 255 nm with quantum yields of 4% (3) and 30% ([3][GaCl4]) affording a switching ratio [ΦF(3+)/ΦF(3)] of 7.5 in quantum efficiency with oxidation state. Solid-state films of both 3 and [3][GaCl4] exhibit emission bands at a longer wavelength (490 nm) attributed to excimer emission.
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Affiliation(s)
- Yassine Beldjoudi
- Department of Chemistry and Biochemistry , University of Windsor , 401 Sunset Avenue , Windsor , Ontario N9B 3P4 , Canada
| | - Ana Arauzo
- Departamento de Física de la Materia Condensada, Facultad de Ciencias, and Instituto de Ciencia de Materiales de Aragon , CSIC-Universidad de Zaragoza , E-50009 Zaragoza , Spain
| | - Javier Campo
- Departamento de Física de la Materia Condensada, Facultad de Ciencias, and Instituto de Ciencia de Materiales de Aragon , CSIC-Universidad de Zaragoza , E-50009 Zaragoza , Spain
| | - Emma L Gavey
- Department of Chemistry , Brock University , 500 Glenridge Avenue , St. Catharines , Ontario L2S 3A1 , Canada
| | - Melanie Pilkington
- Department of Chemistry , Brock University , 500 Glenridge Avenue , St. Catharines , Ontario L2S 3A1 , Canada
| | - Mitchell A Nascimento
- Department of Chemistry and Biochemistry , University of Windsor , 401 Sunset Avenue , Windsor , Ontario N9B 3P4 , Canada
| | - Jeremy M Rawson
- Department of Chemistry and Biochemistry , University of Windsor , 401 Sunset Avenue , Windsor , Ontario N9B 3P4 , Canada
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18
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Molčanov K, Kojić-Prodić B. Towards understanding π-stacking interactions between non-aromatic rings. IUCRJ 2019; 6:156-166. [PMID: 30867913 PMCID: PMC6400184 DOI: 10.1107/s2052252519000186] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 01/04/2019] [Indexed: 05/16/2023]
Abstract
The first systematic study of π interactions between non-aromatic rings, based on the authors' own results from an experimental X-ray charge-density analysis assisted by quantum chemical calculations, is presented. The landmark (non-aromatic) examples include quinoid rings, planar radicals and metal-chelate rings. The results can be summarized as: (i) non-aromatic planar polyenic rings can be stacked, (ii) interactions are more pronounced between systems or rings with little or no π-electron delocalization (e.g. quinones) than those involving delocalized systems (e.g. aromatics), and (iii) the main component of the interaction is electrostatic/multipolar between closed-shell rings, whereas (iv) interactions between radicals involve a significant covalent contribution (multicentric bonding). Thus, stacking covers a wide range of interactions and energies, ranging from weak dispersion to unlocalized two-electron multicentric covalent bonding ('pancake bonding'), allowing a face-to-face stacking arrangement in some chemical species (quinone anions). The predominant interaction in a particular stacked system modulates the physical properties and defines a strategy for crystal engineering of functional materials.
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Affiliation(s)
- Krešimir Molčanov
- Department of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, Croatia
| | - Biserka Kojić-Prodić
- Department of Physical Chemistry, Rudjer Bošković Institute, Bijenička 54, Zagreb 10000, Croatia
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19
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Stekovic D, Bag P, Shankhari P, Fokwa BPT, Itkis ME. Effect of Substitution on the Hysteretic Phase Transition in a Bistable Phenalenyl-Based Neutral Radical Molecular Conductor. Chemistry 2019; 25:4166-4174. [PMID: 30588670 DOI: 10.1002/chem.201805816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Indexed: 11/10/2022]
Abstract
The ability to tune the physical properties of bistable organic functional materials by means of chemistry can facilitate their development for molecular electronic switching components. The butylamine-containing biphenalenyl boron neutral radical, [Bu]2 B, crystalline compound has recently attracted significant attention by displaying a hysteretic phase transition accompanied by simultaneous bistability in magnetic, electrical, and optical properties close to room temperature. In this report, substitutional doping was applied to [Bu]2 B by crystallizing solid solutions of bistable [Bu]2 B and its non-radical-containing counterpart [Bu]2 Be. With increasing doping degree, the hysteretic phase transition is gradually suppressed in terms of reducing the height, but conserves the width of the hysteresis loop as observed through magnetic susceptibility and electrical conductivity measurements. At the critical doping level of about 6 %, the abrupt transformation of the crystal structure to that of the pure [Bu]2 Be crystal packing was observed, accompanied by a complete collapse of the hysteresis loop. Further study of the structure-properties relationships of bistable neutral radical conductors based on the [Bu]2 B host can be conducted utilizing a variety of biphenalenyl-based molecular conductors.
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Affiliation(s)
- Dejan Stekovic
- Department of Chemistry, University of California, Riverside, Riverside, CA, 92521, USA.,Center for Nanoscale Science and Engineering, University of California, Riverside, Riverside, CA, 92521, USA
| | - Pradip Bag
- Department of Chemistry, University of California, Riverside, Riverside, CA, 92521, USA.,Center for Nanoscale Science and Engineering, University of California, Riverside, Riverside, CA, 92521, USA
| | - Pritam Shankhari
- Department of Chemistry, University of California, Riverside, Riverside, CA, 92521, USA
| | - Boniface P T Fokwa
- Department of Chemistry, University of California, Riverside, Riverside, CA, 92521, USA.,Department of Chemical and Environmental Engineering, University of California, Riverside, Riverside, CA, 92521, USA
| | - Mikhail E Itkis
- Department of Chemistry, University of California, Riverside, Riverside, CA, 92521, USA.,Center for Nanoscale Science and Engineering, University of California, Riverside, Riverside, CA, 92521, USA.,Department of Chemical and Environmental Engineering, University of California, Riverside, Riverside, CA, 92521, USA
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20
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Molčanov K, Milašinović V, Ivić N, Stilinović V, Kolarić D, Kojić-Prodić B. Influence of organic cations on the stacking of semiquinone radical anions. CrystEngComm 2019. [DOI: 10.1039/c9ce00919a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of salts of tetrachloro- and tetrabromosemiquinone radical anions reveal four types of stacks: 1) pancake bonded dimers, 2) pancake-bonded trimers, 3) equidistant radicals and 4) a novel type of equidistant stacks of partially charged radicals.
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Affiliation(s)
| | | | - Nives Ivić
- Ruđer Bošković Institute
- Zagreb HR-10000
- Croatia
| | - Vladimir Stilinović
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- Zagreb HR-10000
- Croatia
| | - Dinko Kolarić
- Special Hospital for Medical Rehabilitation
- Daruvarske Toplice
- Daruvar HR-43500
- Croatia
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21
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Rakitin OA, Zibarev AV. Synthesis and Applications of 5‐Membered Chalcogen‐Nitrogen π‐Heterocycles with Three Heteroatoms. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800536] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Oleg A. Rakitin
- N. D. Zelinsky Institute of Organic ChemistryRussian Academy of Sciences 119991 Moscow Russia
- Nanotechnology Education and Research CenterSouth Ural State University 454080 Chelyabinsk Russia
| | - Andrey V. Zibarev
- N. N. Vorozhtsov Institute of Organic ChemistrySiberian Branch of Russian Academy of Sciences 630090 Novosibirsk Russia
- Department of ChemistryNational Research University – Tomsk State University 634050 Tomsk Russia
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22
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Murata T, Yamada C, Furukawa K, Morita Y. Mixed valence salts based on carbon-centered neutral radical crystals. Commun Chem 2018. [DOI: 10.1038/s42004-018-0048-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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23
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Le Gal Y, Roisnel T, Auban-Senzier P, Bellec N, Íñiguez J, Canadell E, Lorcy D. Stable Metallic State of a Neutral-Radical Single-Component Conductor at Ambient Pressure. J Am Chem Soc 2018; 140:6998-7004. [DOI: 10.1021/jacs.8b03714] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yann Le Gal
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Thierry Roisnel
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Pascale Auban-Senzier
- Laboratoire de Physique des Solides UMR 8502, CNRS-Université de Paris-Sud, Bat 510, F-91405 Orsay Cedex, France
| | - Nathalie Bellec
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Jorge Íñiguez
- Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), 5 Avenue des Hauts-Fourneaux, L-4362 Esch/Alzette, Luxembourg
| | - Enric Canadell
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, E-08193 Bellaterra, Spain
| | - Dominique Lorcy
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
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24
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Song M, Song X, Bu Y. Spin coupling interactions in C[double bond, length as m-dash]C or B-B-cored porphyrin-mimetic graphene patch nitroxide diradicals. Phys Chem Chem Phys 2018. [PMID: 29517098 DOI: 10.1039/c8cp00105g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In view of the unique structures and promising applications of porphyrins and their derivatives, exploration of their various properties has continued to a hot topic. In this work, we combine porphyrin-mimetic graphene patches which are core-modified by a C[double bond, length as m-dash]C or a B-B unit and two nitroxide radical groups to construct a series of novel diradical molecules (the CC-cored or BB-cored molecules). The spin coupling constants (J) of diradicals were calculated at the (U)B3LYP/6-311G(d,p) level by considering the different linking modes of two nitroxide groups. The results indicate that different core modification considerably affects the J values of such diradicals, and the linking modes can tune the sizes and signs of J, changing their magnetic coupling interactions with different magnitudes and the signs of J from antiferromagnetic to ferromagnetic or vice versa. More interestingly and importantly, the spin coupling interactions of the CC-cored molecules can also be tuned by stretching the core unit C-C bond, suggesting the possibility of activating specific vibrational modes of the CC-cored diradicals by energy pulses to yield variable J coupling magnitudes. On the other hand, for the BB-cored molecules, two-electron reduction can switch or tune their magnetism from ferromagnetic to antiferromagnetic. The essence of all observations is further analyzed from the structural effects and orbital and spin density distributions. The findings about magnetic regulation in these core-modified porphyrin-mimetic graphene patch nitroxide diradicals further expand the field of molecular magnets and provide a rational theoretical basis for designing novel building blocks of magnetic functional molecular materials.
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Affiliation(s)
- Meiyu Song
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
| | - Xinyu Song
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
| | - Yuxiang Bu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China. and School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, People's Republic of China
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25
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Souto M, Gullo MC, Cui H, Casati N, Montisci F, Jeschke HO, Valentí R, Ratera I, Rovira C, Veciana J. Role of the Open-Shell Character on the Pressure-Induced Conductivity of an Organic Donor-Acceptor Radical Dyad. Chemistry 2018; 24:5500-5505. [DOI: 10.1002/chem.201800881] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Manuel Souto
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN; Campus Universitari de Bellaterra; 08193 Bellaterra Spain
- Current affiliation: Instituto de Ciencia Molecular (ICMol); Universidad de Valencia; c/Catedrático José Beltrán 2 46980 Paterna Spain
| | - Maria Chiara Gullo
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN; Campus Universitari de Bellaterra; 08193 Bellaterra Spain
| | - HengBo Cui
- Condensed Molecular Materials Laboratory; RIKEN; Wako-shi, Saitama 351-0198 Japan
| | - Nicola Casati
- Paul Scherrer Institut, WLGA/229; 5232 Villigen PSI Switzerland
| | - Fabio Montisci
- Department of Chemistry and Biochemistry; University of Bern; Freiestrasse 3 3012 Bern Switzerland
| | - Harald O. Jeschke
- Research Institute for Interdisciplinary Science; Okayama University; 3-1-1 Tsushima-nake, Kita-ku 700-8539 Okayama Japan
| | - Roser Valentí
- Institut für Theoretische Physik; Goethe-Universität Frankfurt; Max-von-Laue-Strasse 1 60438 Frankfurt am Main Germany
| | - Imma Ratera
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN; Campus Universitari de Bellaterra; 08193 Bellaterra Spain
| | - Concepció Rovira
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN; Campus Universitari de Bellaterra; 08193 Bellaterra Spain
| | - Jaume Veciana
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN; Campus Universitari de Bellaterra; 08193 Bellaterra Spain
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26
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Kobayashi Y. Pure Organic Conductors Based on Protonic-Defect Induction: From Semiconductors to Organic Metals. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170374] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yuka Kobayashi
- National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
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27
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Hofmann LE, Mach L, Heinrich MR. Nitrogen Oxides and Nitric Acid Enable the Sustainable Hydroxylation and Nitrohydroxylation of Benzenes under Visible Light Irradiation. J Org Chem 2017; 83:431-436. [PMID: 29171756 DOI: 10.1021/acs.joc.7b02333] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A new type of waste recycling strategy is described in which nitrogen oxides or nitric acid are directly employed in photocatalyzed hydroxylations and nitrohydroxylations of benzenes. Through these transformations, otherwise costly denitrification can be combined with the synthesis of valuable compounds for various applications.
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Affiliation(s)
- Laura Elena Hofmann
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg , Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
| | - Leonard Mach
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg , Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
| | - Markus R Heinrich
- Department of Chemistry and Pharmacy, Pharmaceutical Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg , Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
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28
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Kushida T, Shirai S, Ando N, Okamoto T, Ishii H, Matsui H, Yamagishi M, Uemura T, Tsurumi J, Watanabe S, Takeya J, Yamaguchi S. Boron-Stabilized Planar Neutral π-Radicals with Well-Balanced Ambipolar Charge-Transport Properties. J Am Chem Soc 2017; 139:14336-14339. [DOI: 10.1021/jacs.7b05471] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tomokatsu Kushida
- Department
of Chemistry, Graduate School of Science, Integrated Research Consortium
on Chemical Sciences (IRCCS), and Institute of Transformative Bio-Molecules
(WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Shusuke Shirai
- Department
of Chemistry, Graduate School of Science, Integrated Research Consortium
on Chemical Sciences (IRCCS), and Institute of Transformative Bio-Molecules
(WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Naoki Ando
- Department
of Chemistry, Graduate School of Science, Integrated Research Consortium
on Chemical Sciences (IRCCS), and Institute of Transformative Bio-Molecules
(WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Toshihiro Okamoto
- Department
of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Hiroyuki Ishii
- Division
of Applied Physics, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Hiroyuki Matsui
- Department
of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Masakazu Yamagishi
- Department
of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Takafumi Uemura
- Department
of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Junto Tsurumi
- Department
of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Shun Watanabe
- Department
of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Jun Takeya
- Department
of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Shigehiro Yamaguchi
- Department
of Chemistry, Graduate School of Science, Integrated Research Consortium
on Chemical Sciences (IRCCS), and Institute of Transformative Bio-Molecules
(WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
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29
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Song M, Song X, Bu Y. Tuning the Spin Coupling Interactions in the Nitroxide-Based Bisphenol-Like Diradicals. Chemphyschem 2017; 18:2487-2498. [DOI: 10.1002/cphc.201700731] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 07/23/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Meiyu Song
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 People's Republic of China
| | - Xinyu Song
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 People's Republic of China
| | - Yuxiang Bu
- School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 People's Republic of China
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30
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Mailman A, Wong JWL, Winter SM, Claridge RCM, Robertson CM, Assoud A, Yong W, Steven E, Dube PA, Tse JS, Desgreniers S, Secco RA, Oakley RT. Fine Tuning the Performance of Multiorbital Radical Conductors by Substituent Effects. J Am Chem Soc 2017; 139:1625-1635. [DOI: 10.1021/jacs.6b11779] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Aaron Mailman
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Joanne W. L. Wong
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Stephen M. Winter
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | | | - Craig M. Robertson
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
| | - Abdeljalil Assoud
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Wenjun Yong
- Department
of Earth Sciences, University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Eden Steven
- Department
of Physics, Florida State University, Tallahassee, Florida 32310, United States
| | - Paul A. Dube
- Brockhouse
Institute for Materials Research, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - John S. Tse
- Department
of Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Serge Desgreniers
- Department
of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Richard A. Secco
- Department
of Earth Sciences, University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Richard T. Oakley
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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31
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Molčanov K, Kojić-Prodić B. Spin pairing, electrostatic and dipolar interactions influence stacking of radical anions in alkali salts of 4,5-dichloro-3,6-dioxocyclohexa-1,4-diene-1,2-dicarbonitrile (DDQ). CrystEngComm 2017. [DOI: 10.1039/c7ce00261k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Souto M, Rovira C, Ratera I, Veciana J. TTF–PTM dyads: from switched molecular self assembly in solution to radical conductors in solid state. CrystEngComm 2017. [DOI: 10.1039/c6ce01660j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dyads formed by tetrathiafulvalene (TTF) linked to perchlorotriphenylmethyl (PTM) radicals exhibit interesting physical properties such as bistability in solution or conductivity in solid state.
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Affiliation(s)
- Manuel Souto
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN
- Bellaterra, Spain
| | - Concepció Rovira
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN
- Bellaterra, Spain
| | - Imma Ratera
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN
- Bellaterra, Spain
| | - Jaume Veciana
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)/CIBER-BBN
- Bellaterra, Spain
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33
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Synthesis and Characterization of Ethylenedithio-MPTTF-PTM Radical Dyad as a Potential Neutral Radical Conductor. MAGNETOCHEMISTRY 2016. [DOI: 10.3390/magnetochemistry2040046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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34
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35
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Souto M, Cui H, Peña-Álvarez M, Baonza VG, Jeschke HO, Tomic M, Valentí R, Blasi D, Ratera I, Rovira C, Veciana J. Pressure-Induced Conductivity in a Neutral Nonplanar Spin-Localized Radical. J Am Chem Soc 2016; 138:11517-25. [DOI: 10.1021/jacs.6b02888] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manuel Souto
- Institut de Ciència de Materials
de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès (Barcelona), Spain
| | - HengBo Cui
- Condensed Molecular Materials Laboratory, RIKEN, Wako-shi, Saitama 351-0198, Japan
| | - Miriam Peña-Álvarez
- MALTA CONSOLIDER Team, Departamento de Química
Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Valentín G. Baonza
- MALTA CONSOLIDER Team, Departamento de Química
Física I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Harald O. Jeschke
- Institut für Theoretische Physik, Goethe-Universität Frankfurt, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - Milan Tomic
- Institut für Theoretische Physik, Goethe-Universität Frankfurt, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - Roser Valentí
- Institut für Theoretische Physik, Goethe-Universität Frankfurt, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
| | - Davide Blasi
- Institut de Ciència de Materials
de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès (Barcelona), Spain
| | - Imma Ratera
- Institut de Ciència de Materials
de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès (Barcelona), Spain
| | - Concepció Rovira
- Institut de Ciència de Materials
de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès (Barcelona), Spain
| | - Jaume Veciana
- Institut de Ciència de Materials
de Barcelona (ICMAB-CSIC)/CIBER-BBN, Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès (Barcelona), Spain
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36
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Fumanal M, Deumal M. The quest for rationalizing the magnetism in purely organic semiquinone-bridged bisdithiazolyl molecular magnets. Phys Chem Chem Phys 2016; 18:20738-49. [PMID: 27412491 DOI: 10.1039/c6cp02699k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Semiquinone-bridged bisdithiazolyl-based radicals (XBBO) are appealing purely organic magnetic building blocks for the synthesis of new functional materials. Remarkably, for the phenyl-derivative PhBBO, the rationalization of its magnetism becomes a proof of concept that DFT can dramatically fail to evaluate JAB magnetic interactions between purely organic radical pairs. Instead, wavefunction-based methods are required. Once JAB's are fully characterized, the magnetic topology of PhBBO is disclosed to consist of ferromagnetic FM π-stacks that are very weakly coupled (by FM and AFM JAB interactions). The magnetic susceptibility χT(T) and magnetization M(H) of PhBBO are then calculated using a first-principles bottom-up approach. The study of the unit cell contraction upon cooling from room temperature to zero-Kelvin is relevant to propose a suitable model for the phase transition that occurs at 4.5 K. A simplistic picture tells us that the antiparallel-aligned 1D-FM-chains convert into domains of weakly either FM- or AFM-coupled 1D-FM-chains. Accordingly, the presence of these domains may introduce geometrical spin frustration below 4.5 K.
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Affiliation(s)
- Maria Fumanal
- Departament de Ciència de Materials i Química Física and IQTCUB, Universitat de Barcelona, Martí i Franquès 1, E-08028 Barcelona, Spain. and Laboratoire de Chimie Quantique, Université de Strasbourg, 4 rue Blaise Pascal, F-67000 Strasbourg, France
| | - Mercè Deumal
- Departament de Ciència de Materials i Química Física and IQTCUB, Universitat de Barcelona, Martí i Franquès 1, E-08028 Barcelona, Spain.
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37
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Constantinides CP, Koutentis PA. Stable N- and N/S-Rich Heterocyclic Radicals. ADVANCES IN HETEROCYCLIC CHEMISTRY 2016. [DOI: 10.1016/bs.aihch.2016.03.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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38
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Yamamoto K, Kanematsu Y, Nagashima U, Ueda A, Mori H, Tachikawa M. Theoretical study of the H/D isotope effect on phase transition of hydrogen-bonded organic conductor κ-H3(Cat-EDT-TTF)2. Phys Chem Chem Phys 2016; 18:29673-29680. [DOI: 10.1039/c6cp05414e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
κ-H3(Cat-EDT-TTF)2 (H-TTF) is a hydrogen-bonded π-electron system. Only its isotopologue, D-TTF, shows the phase transition. We obtained a symmetric single-well effective-PEC for H-TTF and low-barrier effective-PEC for D-TTF.
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Affiliation(s)
- Kaichi Yamamoto
- Graduate School of Nanobioscience
- Yokohama City University
- Yokohama-City
- Japan
| | - Yusuke Kanematsu
- Faculty of Information Sciences
- Hiroshima City University
- Hiroshima
- Japan
| | | | - Akira Ueda
- The Institute for Solid State Physics
- The University of Tokyo
- Kashiwa
- Japan
| | - Hatsumi Mori
- The Institute for Solid State Physics
- The University of Tokyo
- Kashiwa
- Japan
| | - Masanori Tachikawa
- Graduate School of Nanobioscience
- Yokohama City University
- Yokohama-City
- Japan
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39
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40
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Tian D, Winter SM, Mailman A, Wong JWL, Yong W, Yamaguchi H, Jia Y, Tse JS, Desgreniers S, Secco RA, Julian SR, Jin C, Mito M, Ohishi Y, Oakley RT. The metallic state in neutral radical conductors: dimensionality, pressure and multiple orbital effects. J Am Chem Soc 2015; 137:14136-48. [PMID: 26513125 DOI: 10.1021/jacs.5b08254] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Pressure-induced changes in the solid-state structures and transport properties of three oxobenzene-bridged bisdithiazolyl radicals 2 (R = H, F, Ph) over the range 0-15 GPa are described. All three materials experience compression of their π-stacked architecture, be it (i) 1D ABABAB π-stack (R = Ph), (ii) quasi-1D slipped π-stack (R = H), or (iii) 2D brick-wall π-stack (R = F). While R = H undergoes two structural phase transitions, neither of R = F, Ph display any phase change. All three radicals order as spin-canted antiferromagnets, but spin-canted ordering is lost at pressures <1.5 GPa. At room temperature, their electrical conductivity increases rapidly with pressure, and the thermal activation energy for conduction Eact is eliminated at pressures ranging from ∼3 GPa for R = F to ∼12 GPa for R = Ph, heralding formation of a highly correlated (or bad) metallic state. For R = F, H the pressure-induced Mott insulator to metal conversion has been tracked by measurements of optical conductivity at ambient temperature and electrical resistivity at low temperature. For R = F compression to 6.2 GPa leads to a quasiquadratic temperature dependence of the resistivity over the range 5-300 K, consistent with formation of a 2D Fermi liquid state. DFT band structure calculations suggest that the ease of metallization of these radicals can be ascribed to their multiorbital character. Mixing and overlap of SOMO- and LUMO-based bands affords an increased kinetic energy stabilization of the metallic state relative to a single SOMO-based band system.
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Affiliation(s)
- Di Tian
- Department of Physics, University of Toronto , Toronto, Ontario M5S 1A7 Canada
| | - Stephen M Winter
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Aaron Mailman
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Joanne W L Wong
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Wenjun Yong
- Department of Earth Sciences, University of Western Ontario , London, Ontario N6A 5B7, Canada
| | - Hiroshi Yamaguchi
- Faculty of Engineering, Kyushu Institute of Technology , Kitakyushu 804-8550, Japan
| | - Yating Jia
- Institute of Physics, Chinese Academy of Sciences , Beijing, 100080, China
| | - John S Tse
- Department of Physics, University of Saskatchewan , Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Serge Desgreniers
- Department of Physics, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada
| | - Richard A Secco
- Department of Earth Sciences, University of Western Ontario , London, Ontario N6A 5B7, Canada
| | - Stephen R Julian
- Department of Physics, University of Toronto , Toronto, Ontario M5S 1A7 Canada.,Canadian Institute for Advanced Research , Toronto, Ontario M5G 1Z8, Canada
| | - Changqing Jin
- Institute of Physics, Chinese Academy of Sciences , Beijing, 100080, China
| | - Masaki Mito
- Faculty of Engineering, Kyushu Institute of Technology , Kitakyushu 804-8550, Japan
| | - Yasuo Ohishi
- Materials Science Division, Japan Synchrotron Radiation Research Institute , SPring-8, Sayo, Hyogo 679-5198, Japan
| | - Richard T Oakley
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
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41
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42
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Winter SM, Hill S, Oakley RT. Magnetic Ordering and Anisotropy in Heavy Atom Radicals. J Am Chem Soc 2015; 137:3720-30. [DOI: 10.1021/jacs.5b00672] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephen M. Winter
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1 Canada
| | - Stephen Hill
- National
High Magnetic Field Laboratory and Department of Physics, Florida State University, Tallahassee, Florida 32310, United States
| | - Richard T. Oakley
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1 Canada
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43
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Mailman A, Winter SM, Wong JWL, Robertson CM, Assoud A, Dube PA, Oakley RT. Multiple Orbital Effects and Magnetic Ordering in a Neutral Radical. J Am Chem Soc 2015; 137:1044-7. [DOI: 10.1021/ja512235h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Aaron Mailman
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Stephen M. Winter
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Joanne W. L. Wong
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Craig M. Robertson
- Department
of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - Abdeljalil Assoud
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Paul A. Dube
- Brockhouse
Institute for Materials Research, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Richard T. Oakley
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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44
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45
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Geraskina MR, Buck AT, Winter AH. An Organic Spin Crossover Material in Water from a Covalently Linked Radical Dyad. J Org Chem 2014; 79:7723-7. [DOI: 10.1021/jo5012812] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Margarita R. Geraskina
- Department of Chemistry, Iowa State University, 2101d Hach Hall, Ames, Iowa 50011, United States
| | - Alexander T. Buck
- Department of Chemistry, Iowa State University, 2101d Hach Hall, Ames, Iowa 50011, United States
| | - Arthur H. Winter
- Department of Chemistry, Iowa State University, 2101d Hach Hall, Ames, Iowa 50011, United States
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46
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Konstantinova LS, Rakitin OA. Sulfur monochloride in organic synthesis. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n03abeh004354] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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47
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Awaga K, Nomura K, Kishida H, Fujita W, Yoshikawa H, Matsushita MM, Hu L, Shuku Y, Suizu R. Electron-Transfer Processes in Highly-Correlated Electron Systems of Thiazyl Radicals. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20130248] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Kunio Awaga
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
- CREST, Nagoya University
| | - Kenji Nomura
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Hideo Kishida
- Department of Applied Physics, Graduate School of Engineering, Nagoya University
| | - Wataru Fujita
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Hirofumi Yoshikawa
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Michio M. Matsushita
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Laigui Hu
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Yoshiaki Shuku
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
| | - Rie Suizu
- Research Center for Materials Science, Nagoya University
- Department of Chemistry, Graduate School of Science, Nagoya University
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48
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Molčanov K, Babić D, Kojić-Prodić B, Stare J, Maltar-Strmečki N, Androš L. Spin-coupling in dimers of 2,3-dicyano-5,6-dichlorosemiquinone radical anions in the crystalline state. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2014; 70:181-190. [PMID: 24441141 DOI: 10.1107/s2052520613027170] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 10/02/2013] [Indexed: 06/03/2023]
Abstract
A crystal engineering approach is used to stabilize a radical anion in the crystalline state and to modulate the separation distance within π-stacks of anion radicals. Alkali metal salts of 2,3-dicyano-5,6-dichlorosemiquinone (C8Cl2N2O2, DDQ∙- radical anions were prepared and their crystal structures determined: LiDDQ·2H2O·(CH3)2CO, RbDDQ·2H2O and CsDDQ·2H2O. In these structures, stacked dimers of radical anions are formed within π-stacked columns. Within the stacked dimers, interplanar separation distances are significantly shorter than the sum of the van der Waals radii for two C atoms; the shortest is 2.812 Å for the Li salt and the longest is 2.925 Å for the Cs salt. Diamagnetic character, observed by electron paramagnetic resonance spectroscopy, indicates spin-coupling of the unpaired electrons within the radical anion dimer. The electron-rich cyano substituents on DDQ∙- influence the electron redistribution within the ring skeleton. The crystalline compounds are also characterized by IR spectroscopy, complemented by quantum-chemical calculations based on both isolated and periodic models.
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Affiliation(s)
| | - Darko Babić
- Rudjer Bošković Institute, Bijenička 54, HR-10000 Zagreb, Croatia
| | | | - Jernej Stare
- National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | | | - Lidija Androš
- Rudjer Bošković Institute, Bijenička 54, HR-10000 Zagreb, Croatia
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49
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Wong JWL, Mailman A, Lekin K, Winter SM, Yong W, Zhao J, Garimella SV, Tse JS, Secco RA, Desgreniers S, Ohishi Y, Borondics F, Oakley RT. Pressure Induced Phase Transitions and Metallization of a Neutral Radical Conductor. J Am Chem Soc 2014; 136:1070-81. [DOI: 10.1021/ja411057x] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Joanne W. L. Wong
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Aaron Mailman
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Kristina Lekin
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Stephen M. Winter
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Wenjun Yong
- Department
of Earth Sciences, University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Jianbao Zhao
- Department
of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Subrahmanyam V. Garimella
- Department
of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - John S. Tse
- Department
of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Richard A. Secco
- Department
of Earth Sciences, University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Serge Desgreniers
- Department
of Physics, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Yasuo Ohishi
- Materials
Science Division, Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Sayo, Hyogo 679-5198, Japan
| | | | - Richard T. Oakley
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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50
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Wong JWL, Mailman A, Winter SM, Robertson CM, Holmberg RJ, Murugesu M, Dube PA, Oakley RT. Supramolecular architecture, crystal structure and transport properties of the prototypal oxobenzene-bridged bisdithiazolyl radical conductor. Chem Commun (Camb) 2014; 50:785-7. [DOI: 10.1039/c3cc46686h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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