Development of hybridized pi-figuration of sphere and plane into superconductors and quantum magnets

• Project Area: pi-System Figuration: Control of Electron and Structural Dynamism for Innovative Functions
• Project/Area Number: 17H05139
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Osaka Prefecture University
• Principal Investigator: プラシデス コスマス 大阪府立大学, 工学(系)研究科(研究院), 教授 (90719006)
• Project Period (FY): 2017-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000); Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2017: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
• Keywords: Superconductivity / Spin liquids / Polyaromatic hydrocarbon / Quantum magnetism / Fullerenes / pi-electron systems / 強相関電子系 / 量子磁性 / 複合材料・物性 / フラーレン / 多環芳香族炭化水素

Outline of Annual Research Achievements

We succeeded in establishing for the first time reproducible synthetic procedures of phase-pure highly-crystalline metal-doped PAHs, which emerge as candidates of new exotic electronic states of matter, including three-dimensional quantum spin liquids arising purely from carbon pi-electrons for the first time. Our methodology led to entirely new chemical approaches to produce intercalated PAHs with controlled oxidation states. The new synthetic routes allowed the isolation of unique materials, including the isolation of a S = 1/2 quantum spin-liquid state arising for the first time purely from pi-electrons. These results provide the seeds of new ideas to transform thinking about the scientific area of quantum magnetism in molecular systems and open a new branch of molecular science in the same way that, 10 years ago, the discovery of the Cs3C60 superconductor led to the renaissance of fullerene superconductivity.
As a direct application of our generic synthetic routes, we have now developed the synthesis of the first unsolvated alkali metal rubrene and tetracene phases. The crystal chemistry of the potassium rubrene phase contrasts with that of earlier structures allowing us to take the first step towards establishing structure-composition relationships in this class of materials. On the other hand, K2tetracene is isostructural with K2pentacene with the K+ cations residing in two sites that are not disordered due to the limited sites on which they can be accommodated.

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] University of Liverpool/Rutherford Appleton Laboratory(英国)
• [Int'l Joint Research] Aristotle University of Thessaloniki(ギリシャ)
• [Int'l Joint Research] Bursa Technical University(トルコ)
• [Int'l Joint Research] NIST(米国)
• [Int'l Joint Research] Charles University(チェコ)
• [Int'l Joint Research]
• [Int'l Joint Research] Uniersity of Liverpool/Durham University(英国)
• [Int'l Joint Research] Aristotle University of Thessaloniki(ギリシャ)
• [Int'l Joint Research] Bursa Technical University(トルコ)
• [Int'l Joint Research] European Synchrotron Radiation Facility(フランス)
• [Int'l Joint Research] Jozef Stefan Institute/University of Ljubljana(スロベニア)
• [Journal Article] Pressure-Induced Charge Disorder-Order Transition in the Cs4O6 Sesquioxide (2020)
  • Author(s): Okur H. Esma、Colman Ross H.、Ohishi Yasuo、Sans Annette、Felser Claudia、Jansen Martin、Prassides Kosmas
  • Journal Title: Inorganic Chemistry Volume: 59 Issue: 2 Pages: 1256-1264
  • DOI: 10.1021/acs.inorgchem.9b02974
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Chemical reduction of Li+@C60 by decamethylferrocene to produce neutral Li+@C60・- (2019)
  • Author(s): H. Okada, H. Ueno, Y. Takabayashi, T. Nakagawa, M. Vrankic;, J. Arvanitidis, T. Kusamoto, K. Prassides, and Y. Matsuo
  • Journal Title: Carbon Volume: 153 Pages: 467-471
  • DOI: 10.1016/j.carbon.2019.07.028
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Elusive Valence Transition in Mixed-Valence Sesquioxide Cs4O6 (2019)
  • Author(s): Colman Ross H.、Okur H. Esma、Kockelmann Winfried、Brown Craig M.、Sans Annette、Felser Claudia、Jansen Martin、Prassides Kosmas
  • Journal Title: Inorganic Chemistry Volume: 58 Issue: 21 Pages: 14532-14541
  • DOI: 10.1021/acs.inorgchem.9b02122
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Structural and electronic properties of the overexpanded quaternary superconducting fulleride K0.25Rb0.25Cs2.5C60 (2019)
  • Author(s): Okur H. Esma、Prassides Kosmas
  • Journal Title: Journal of Physics and Chemistry of Solids Volume: 131 Pages: 44-49
  • DOI: 10.1016/j.jpcs.2019.03.017
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Pressure-induced Mott-insulator-metal crossover at ambient temperature in an overexpanded fulleride (2018)
  • Author(s): R. H, Zadik, Y. Takabayashi, R. H. Colman, G. Garbarino, and K. Prassides
  • Journal Title: Materials Chemistry Frontiers Volume: 印刷中 Issue: 5 Pages: 993-998
  • DOI: 10.1039/c8qm00048d
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Structural and electronic response of overexpanded superconducting fullerides close to the Mott insulator boundary (2018)
  • Author(s): M. Menelaou, Y. Takabayashi, H. E. Okur, R. H, Zadik, and K. Prassides
  • Journal Title: International Journal of Modern Physics B Volume: 32 Issue: 17 Pages: 1840020-1840020
  • DOI: 10.1142/s0217979218400209
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Reactivity of Solid Rubrene with Potassium: Competition between Intercalation and Molecular Decomposition (2018)
  • Author(s): Zhang Jiliang、Whitehead George F. S.、Manning Troy D.、Stewart David、Hiley Craig I.、Pitcher Michael J.、Jansat Susanna、Prassides Kosmas、Rosseinsky Matthew J.
  • Journal Title: Journal of the American Chemical Society Volume: 140 Issue: 51 Pages: 18162-18172
  • DOI: 10.1021/jacs.8b11231
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] π-electron S =1/2 quantum spin-liquid state in an ionic polyaromatic hydrocarbon (2017)
  • Author(s): Takabayashi Y, Menelaou M, Tamura H, Takemori N, Koretsune T, Stefancic A, Klupp G, Buurma AJC, Nomura Y, Arita R,, Arcon D, Rosseinsky MJ, Prassides K
  • Journal Title: Nature Chemistry Volume: 9 Issue: 7 Pages: 635-643
  • DOI: 10.1038/nchem.2764
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Redox-controlled potassium intercalation into two polyaromatic hydrocarbon solids (2017)
  • Author(s): F. D. Romero, M. J. Pitcher, C. I. Hiley, G. F. S. Whitehead, S. Kar, A. Y. Ganin, D. Antypov, C. Collins, M. S. Dyer, G. Klupp, R. H. Colman, K. Prassides and M. J. Rosseinsky
  • Journal Title: Nature Chemistry Volume: 9 Issue: 7 Pages: 644-652
  • DOI: 10.1038/nchem.2765
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Air/Liquid Interfacial Nanoassembly of Molecular Building Blocks into Preferentially Oriented Porous Organic Nanosheet Crystals via Hydrogen Bonding (2017)
  • Author(s): Makiura Rie、Tsuchiyama Kohei、Pohl Ehmke、Prassides Kosmas、Sakata Osami、Tajiri Hiroo、Konovalov Oleg
  • Journal Title: ACS Nano Volume: 11 Issue: 11 Pages: 10875-10882
  • DOI: 10.1021/acsnano.7b04447
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Materials development in π-f electron systems (2020)
  • Author(s): Kosmas Prassides
  • Organizer: The 2019 J-Physics Annual Meeting (Kobe)
  • Invited
• [Presentation] Pressure-induced valence transitions in mixed valence rare-earth fullerides (2020)
  • Author(s): Keisuke Matsui, Kosmas Prassides
  • Organizer: The 2020 JPS Annual Meeting (Nagoya)
• [Presentation] Quantum magnetism in fully-frustrated all-carbon π-electron systems (2019)
  • Author(s): Kosmas Prassides
  • Organizer: International Workshop on Phase Transition and Dynamical Properties of Spin Transition Materials (PDSTM 2019) (Gainesville, Florida, USA)
  • Int'l Joint Research / Invited
• [Presentation] Emergent Electronic Phenomena in All-Carbon π-Electron Molecular Systems (2019)
  • Author(s): Kosmas Prassides
  • Organizer: The 1st Nanjing Conference on Quantum Materials (NCQM-2019) (Nanjing, China)
  • Int'l Joint Research / Invited
• [Presentation] Emergent electronic phenomena in mixed valence rare-earth fullerides (2019)
  • Author(s): Kosmas Prassides
  • Organizer: The International Conference on Quantum Physics in Complex Matter: Superconductivity, Magnetism and Ferroelectricity, Superstripes 2019 (Ischia, Naples, Italy)
  • Int'l Joint Research / Invited
• [Presentation] Emergent electronic phenomena in hybrid f-/p- electron molecular materials (2019)
  • Author(s): Kosmas Prassides
  • Organizer: The J-Physics 2019 International Conference & KINKEN-WAKATE 2019 Multipole Physics (Kobe)
  • Int'l Joint Research
• [Presentation] Emergent electronic phenomena in mixed valence rare-earth fullerides (2019)
  • Author(s): Kosmas Prassides
  • Organizer: The International Conference on Electron Correlation in Superconductors and Nanostructures (ECSN-2019) (Odessa, Ukraine)
  • Int'l Joint Research / Invited
• [Presentation] Metal-directed asymmetric spatial assembly of diverse building blocks - spheres, planes, and bowls (2019)
  • Author(s): Kosmas Prassides
  • Organizer: The 2019 Coordination Asymmetry Annual Meeting (Tokyo)
• [Presentation] Emergent electronic phenomena in intermediate valence rare-earth fullerides (2019)
  • Author(s): Kosmas Prassides
  • Organizer: The J-Physics Mini-Workshop in Osaka (Osaka)
• [Presentation] Mixed valence transitions in rare-earth fullerides (2019)
  • Author(s): Naoya Yoshikane, Kosmas Prassides
  • Organizer: The 2019 Autumn Meeting, The Physical Society of Japan (Gifu)
• [Presentation] Tuning of mixed valency in asymmetrically- coordinated rare-earth fullerides (2019)
  • Author(s): Naoya Yoshikane, Kosmas Prassides
  • Organizer: The 69th Conference of the Japan Society of Coordination Chemistry (Nagoya)
• [Presentation] Superconductivity and quantum magnetism in p-electron systems: a personal ongoing voyage into the unexpected (2019)
  • Author(s): Kosmas Prassides
  • Organizer: The 407th colloquium of the Solid State Physics Seminars Series, Department of Applied Physics, School of Engineering, Nagoya University
  • Invited
• [Presentation] Quantum magnetism in fully-frustrated all-carbon π-electron Systems (2019)
  • Author(s): Kosmas Prassides
  • Organizer: The 99th Annual Meeting 2019 of Chemical Society Japan
  • Int'l Joint Research / Invited
• [Presentation] Pressure evolution of Sm valence in (Sm1-xCax)2.75C60 fullerides (2019)
  • Author(s): Naoya Yoshikane, Kosmas Prassides
  • Organizer: The 99th Annual Meeting 2019 of Chemical Society Japan
• [Presentation] Unconventional superconductivity and quantum magnetism in π-electron molecular systems (2018)
  • Author(s): Y. Takabayashi, M. Vrankic, T. Nakagawa, J. Arvanitidis, and K. Prassides
  • Organizer: The Kick-off Symposium for World Leading Research Centers
  • Int'l Joint Research
• [Presentation] Emergent electronic phenomena in all-carbon π-electron systems (2018)
  • Author(s): K. Prassides
  • Organizer: AIMR Workshop 2018
  • Int'l Joint Research / Invited
• [Presentation] Some recent progress of our research on all-carbon π-electron systems (2018)
  • Author(s): Kosmas Prassides
  • Organizer: 2018 π-figuration Annual Meeting
• [Presentation] Carbon-based molecular materials as new electronic materials platforms (2018)
  • Author(s): Kosmas Prassides
  • Organizer: International Workshop on New Materials and Crystal Growth
  • Int'l Joint Research / Invited
• [Presentation] Emergent Electronic Phenomena in All-Carbon π-Electron Systems (2018)
  • Author(s): Kosmas Prassides
  • Organizer: Gordon Research Conference (GRC), “Conductivity and Magnetism in Molecular Materials”
  • Int'l Joint Research / Invited
• [Presentation] Towards the Assembly of Charged Analogues of Endohedral Metallofullerenes from Bowl-shaped π-Electron Molecular Units (2018)
  • Author(s): Zhanqiang Xu, Kosmas Prassides
  • Organizer: Gordon Research Conference (GRC), “Conductivity and Magnetism in Molecular Materials”
  • Int'l Joint Research
• [Presentation] Superconductivity and Magnetism in all-Carbon π-electron Systems (2018)
  • Author(s): Kosmas Prassides
  • Organizer: 12th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (M2S-2018)
  • Int'l Joint Research / Invited
• [Presentation] Unconventional superconductivity and quantum magnetism in π-electron molecular systems (2018)
  • Author(s): Kosmas Prassides
  • Organizer: 2018 European Materials Research Society (E-MRS) Fall meeting
  • Int'l Joint Research / Invited
• [Presentation] Emergent Electronic Phenomena in All-Carbon π-Electron Molecular Systems (2018)
  • Author(s): Kosmas Prassides
  • Organizer: The 8th TOYOTA RIKEN International Workshop on Organic Semiconductors, Conductors, and Electronics
  • Int'l Joint Research / Invited
• [Presentation] Emergent Electronic Phenomena in π-electron Nanocarbon Molecular Systems (2017)
  • Author(s): K. Prassides
  • Organizer: The 12th Japan-France Workshop on Nanomaterials and 3rd WPI Workshop on Materials Science (NanoMat 2017)
  • Int'l Joint Research / Invited
• [Presentation] High Temperature and High Magnetic Field Superconductivity in Fullerides (2017)
  • Author(s): K. Prassides
  • Organizer: 231st ECS Meeting, SYMPOSIUM B05: FULLERENES- CHEMICAL FUNCTIONALIZATION, ELECTRON TRANSFER, AND THEORY
  • Int'l Joint Research / Invited
• [Presentation] New candidate quantum spin liquids in ionic polyaromatic hydrocarbons (2017)
  • Author(s): K. Prassides
  • Organizer: International Conference on Quantum Physics in Complex Matter: Superconductivity, Magnetism and Ferroelectricity, Superstripes 2017
  • Int'l Joint Research / Invited
• [Presentation] A μSR search for the Hebel-Slichter coherence peak across the superconductivity dome of fullerides (2017)
  • Author(s): K. Prassides
  • Organizer: The 14th International Conference on Muon Spin Rotation, Relaxation and Resonance (μSR2017)
  • Int'l Joint Research
• [Presentation] π-electron quantum magnetism in ionic polyaromatic hydrocarbons (2017)
  • Author(s): K. Prassides
  • Organizer: 6th Asian Conference on Coordination Chemistry (ACCC6)
  • Int'l Joint Research / Invited
• [Presentation] Emergent electronic phenomena in all-carbon π-electron systems (2017)
  • Author(s): K. Prassides
  • Organizer: Electron Correlation in Superconductors and Nanostructures (ECSN-2017)
  • Int'l Joint Research / Invited
• [Presentation] Emergent electronic phenomena in π-electron molecular systems (2017)
  • Author(s): K. Prassides
  • Organizer: 15th International Conference on Advanced Materials (IUMRS-ICAM 2017)
  • Int'l Joint Research
• [Presentation] π-electron Quantum Magnetism in Ionic Polyaromatic Hydrocarbons (2017)
  • Author(s): Y. Takabayashi, M. Menelaou, N. Takemori, T. Koretsune, Y. Nomura, R. Arita, M. J. Rosseinsky, and K. Prassides
  • Organizer: 12th International Symposium on Crystalline Organic Metals, Superconductors and Magnets (ISCOM2017)
  • Int'l Joint Research
• [Presentation] Intermediate valency in hybrid f-/p-electron molecular materials (2017)
  • Author(s): K. Prassides
  • Organizer: International Workshop on Multipole Physics and Related Phenomena
  • Int'l Joint Research
• [Presentation] In search of the Hebel-Slichter coherence peak across the superconductivity dome of fullerides (2017)
  • Author(s): K. Prassides
  • Organizer: 4th Open Symposium on π-System Figuration
  • Invited
• [Presentation] Emergent electronic phenomena in all-carbon π-electron systems (2017)
  • Author(s): K. Prassides
  • Organizer: German-Japanese Workshop on π-System Figuration
  • Int'l Joint Research / Invited
• [Presentation] Fullerene superconductivity: a personal ongoing voyage into the unexpected (2017)
  • Author(s): K. Prassides
  • Organizer: Paris / Palaiseau 2017 Fall Lecture Series on the Frontiers of Condensed Matter Physics (FCMP)
  • Int'l Joint Research / Invited
• [Presentation] 30 years of superconductivity in molecular solids (2017)
  • Author(s): K. Prassides
  • Organizer: 30th International Symposium on Superconductivity (ISS2017)
  • Int'l Joint Research / Invited
• [Presentation] π-electron Quantum Magnetism in Ionic Polyaromatic Hydrocarbons (2017)
  • Author(s): Y. Takabayashi, M. Menelaou, N. Takemori, T. Koretsune, Y. Nomura, R. Arita, M. J. Rosseinsky, and K. Prassides
  • Organizer: 2nd workshop on New development of research on quantum spin liquids
  • Invited
• [Book] Superconductivity: From Materials Science to Practical Applications (2019)
  • Author(s): P. Mele, K. Prassides, C. Tarantini, A. Palau, P. Badica, A. K. Jha, T. Endo
  • Total Pages: 379
  • Publisher: Springer Nature
• [Remarks] Electronic Functional Materials Laboratory
  • URL: http://mtr1.osakafu-u.ac.jp/prassides-lab/