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Ueno H, Kitabatake D, Mabuchi T, Aoyagi S, Itoh T, Deng T, Misaizu F. Synthesis and Characterization of Ionic Li + @C 70 Endohedral Fullerene. Chemistry 2024; 30:e202303908. [PMID: 38036463 DOI: 10.1002/chem.202303908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 11/29/2023] [Accepted: 11/29/2023] [Indexed: 12/02/2023]
Abstract
Ion-endohedral-fullerene has attracted growing interest due to the unique electronic and structural characteristics arising from its distinctive ionic nature. Although there has been only one reported ion-encapsulated fullerene, Li+ @C60 , a significant number of fundamental and applied studies have been conducted, making a substantial impact not only in chemistry and physics but also across various interdisciplinary research fields. Nevertheless, studies on ion-endohedral fullerenes are still in their infancy due to the limitations in variety, and hence, it remains an open question how the size and symmetry of fullerene, as well as the motion and position of the encapsulated ion, affect their physical/chemical properties. Herein, we report the synthesis of lithium-ion-endohedral [70]fullerene (Li+ @C70 X- , X=PF6 - and TFSI- ), a novel ionic endohedral fullerene. X-ray crystallography confirmed the encapsulation of Li+ by C70 cage as well as its ion-pair structure stabilized by external TFSI- counter anion. The encapsulated Li+ drastically lowered the orbital energy of the C70 cage by Coulomb interactions but did not affect the orbital energy gap and degeneracy. DFT studies were also performed, which supported the experimentally observed electronic effects caused by the encapsulated Li+ .
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Affiliation(s)
- Hiroshi Ueno
- Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, Sendai, 980-8578, Japan
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
| | - Daiki Kitabatake
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
| | - Takuya Mabuchi
- Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, Sendai, 980-8578, Japan
- Institute of Fluid Science, Tohoku University, Sendai, 980-8578, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Takashi Itoh
- Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, Sendai, 980-8578, Japan
| | - Ting Deng
- Key Laboratory of Automobile Materials of MOE, School of Materials Science and Engineering and, Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun, 130012, China
| | - Fuminori Misaizu
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
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Shui QJ, Shan S, Zhai YC, Aoyagi S, Izawa S, Huda M, Yu CY, Zuo L, Chen H, Lin HS, Matsuo Y. Evaporable Fullerene Indanones with Controlled Amorphous Morphology as Electron Transport Layers for Inverted Perovskite Solar Cells. J Am Chem Soc 2023; 145:27307-27315. [PMID: 38063310 DOI: 10.1021/jacs.3c07192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Fullerenes are among the most commonly used electron-transporting materials (ETMs) in inverted perovskite solar cells (IPSCs). Although versatile functionalized fullerene derivatives have shown excellent performance in IPSCs, pristine [60]fullerene (C60) is still the most widely used in devices mainly because of its uniform morphology by thermal deposition. However, thermally evaporable fullerene derivatives have not yet been achieved. Herein, we developed a series of evaporable fullerene derivatives, referred to as fullerene indanones (FIDOs), affording IPSCs with high power conversion efficiency (PCE) and long-term storage stability. The FIDOs were designed with a unique architecture in which the fullerene moiety and a benzene ring moiety are linked via a five-membered carbon ring in benzene ring plane. This molecular arrangement affords exceptional thermal stability, allowing the FIDOs to withstand harsh thermal deposition conditions. Moreover, by manipulating the steric bulk of the functional groups, we could control the state of the organic film from crystalline to amorphous. Subsequently, we used FIDOs as an electron transport layer (ETL) in IPSCs. Thanks to the suitable energy level and dual-passivation effect of FIDOs compared with a reference ETL using C60, the device using FIDOs achieved an open-circuit voltage of 1.16 V and a fill factor of 0.77. As a result, the PCE reached 22.11%, which is superior to 20.45% of the best-performing reference device. Most importantly, the FIDO-based IPSC devices exhibited exceptional stability in comparison to the reference device due to the stability of the amorphous ETL films.
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Affiliation(s)
- Qing-Jun Shui
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Shiqi Shan
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yong-Chang Zhai
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Seiichiro Izawa
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan
| | - Miftakhul Huda
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Chu-Yang Yu
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Lijian Zuo
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Hongzheng Chen
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Hao-Sheng Lin
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yutaka Matsuo
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- Institute of Materials Innovation, Institutes for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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Imai T, Sakamaki D, Aoyagi S, Amaya T. Intramolecular Electron Transfer in Multi-Redox Systems Based on Cyclic [3]Spirobifluorenylene Compound. Chemistry 2023:e202302670. [PMID: 37740416 DOI: 10.1002/chem.202302670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/22/2023] [Accepted: 09/22/2023] [Indexed: 09/24/2023]
Abstract
Cyclic [3]spirobifluorenylene with bulky alkyl groups at the ends (1) was designed and synthesized to investigate the electron transfer phenomena in a π-conjugated system including orthogonal π-conjugated chains. The three bifluorenyl units in 1 are conjugated to each other via spiro-conjugation, resulting in the splitting of the HOMO levels to a small extent. Therefore, the SOMO-HOMO gap of the radical cation species is small, which is considered to allow the facile intramolecular electron transfer. The electronic properties of 1 and its partial structures were characterized by absorption and fluorescence measurements and electrochemical analysis. From the electrochemical oxidation, the interchain Coulombic repulsion was observed. In the TD-DFT calculations for the radical cation species of 1, the geometry-featured interchain electronic transitions were visualized by NTO calculations. The radical cation species of 1 generated by chemical oxidation with SbCl5 exhibited a broadened and lower-energy NIR absorption band exceeding 2000 nm. Considering the results of the TD-DFT calculations, the NIR band of the radical cation of 1 was attributed to the intramolecular electron transfer processes among the bifluorenyl units in the macrocycle. ESR experiments also indicated the delocalization of a spin of 1⋅+ in the whole molecule via hole hopping in the ESR time scale at room temperature. This work demonstrates the usefulness of spiro-conjugation as a bridging unit in molecular wires to facilitate smooth electron transfer.
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Affiliation(s)
- Tomoya Imai
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya, Aichi, 467-8501, Japan
| | - Daisuke Sakamaki
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya, Aichi, 467-8501, Japan
| | - Toru Amaya
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya, Aichi, 467-8501, Japan
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Miwa K, Aoyagi S, Amaya T, Sasamori T, Morisako S, Kurogi T, Yorimitsu H. Multiply exo-Methylated Corannulenes. Chemistry 2023; 29:e202302443. [PMID: 37712387 DOI: 10.1002/chem.202302443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Invited for the cover of this issue are Shinobu Aoyagi (Nagoya City University), Takahiro Sasamori (University of Tsukuba), and Hideki Yorimitsu (Kyoto University). The image depicts multiply exo-methylated corannulenes (flowers) synthesized from corannulene (central large flower) by the reduction with sodium (soil) to form anionic corannulenes and the subsequent methylation with reduction-resistant dimethyl sulfate (butterflies). Read the full text of the article at 10.1002/chem.202301557.
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Affiliation(s)
- Kazuhira Miwa
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Toru Amaya
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Takahiro Sasamori
- Division of Chemistry, Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Sciences (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Shogo Morisako
- Division of Chemistry, Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Sciences (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Takashi Kurogi
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
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Miwa K, Aoyagi S, Amaya T, Sasamori T, Morisako S, Kurogi T, Yorimitsu H. Multiply exo-Methylated Corannulenes. Chemistry 2023; 29:e202301557. [PMID: 37302982 DOI: 10.1002/chem.202301557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/09/2023] [Accepted: 06/09/2023] [Indexed: 06/13/2023]
Abstract
The curved π-conjugated surface of bowl-shaped corannulene has been multiply methylated to form exo-di-, -tetra-, and -hexamethylated corannulenes. The multimethylations became possible through in-situ iterative reduction/methylation sequences that involve the reduction of corannulenes using sodium to form the anionic corannulene species, and the subsequent SN 2 reaction of the anionic species with reduction-resistant dimethyl sulfate. X-ray diffraction analyses, NMR, MS, UV-Vis measurements, and DFT calculations have revealed the molecular structures of the multimethylated corannulenes and the sequence of the multimethylation. This work has the potential to contribute to the controlled synthesis and characterizations of multifunctionalized fullerenes.
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Affiliation(s)
- Kazuhira Miwa
- Department of Information and Basic Science Graduate School of Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science Graduate School of Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Toru Amaya
- Department of Information and Basic Science Graduate School of Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Takahiro Sasamori
- Division of Chemistry Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Sciences (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Shogo Morisako
- Division of Chemistry Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Sciences (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Takashi Kurogi
- Department of Chemistry Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
| | - Hideki Yorimitsu
- Department of Chemistry Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
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Nakagawa K, Akimoto K, Nakayasu B, Nagashima S, Tobisu M, Schramm MP, Aoyagi S, Amaya T. Synthesis and Host-Guest Chemistry of Chiral Spirobifluorene-Based Macrocycles Soluble in Basic Aqueous Solution. Org Lett 2023; 25:5969-5973. [PMID: 37540115 DOI: 10.1021/acs.orglett.3c02074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Synthesis and host-guest chemistry of water-soluble (pH 12.5) chiral spirobifluorene-based macrocycles 2-[n] were carried out. Cationic guests, such as quaternary ammonium salts, were accommodated well in the hosts. Cp2Co+ was especially strongly bound in 2-[4] (Ka of up to 3.0 × 105 M-1). Enantioselective recognition with (l)-carnitine was also achieved.
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Affiliation(s)
- Kotoko Nakagawa
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8501, Japan
| | - Kanaru Akimoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Bunta Nakayasu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Saki Nagashima
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8501, Japan
| | - Mamoru Tobisu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
| | - Michael P Schramm
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8501, Japan
- Department of Chemistry and Biochemistry, California State University Long Beach (CSULB), 1250 Bellflower Blvd., Long Beach, Los Angeles, California 90840, United States
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8501, Japan
| | - Toru Amaya
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8501, Japan
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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Itoh N, Sugamata K, Morisako S, Aoyagi S, Yorimitsu H, Sasamori T. Synthesis of a Dibenzo-1,6,2,5-dioxadisilocine and Its Unexpected Reductive Coupling with Phenanthrene. CHEM LETT 2023. [DOI: 10.1246/cl.220478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Narumi Itoh
- Graduate School of Science and Technology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Koh Sugamata
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Shogo Morisako
- Department of Chemistry, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Sciences (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Shinobu Aoyagi
- Graduate School of Science, Nagoya City University, Nagoya, Aichi 467-8501, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Takahiro Sasamori
- Department of Chemistry, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Sciences (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
- Graduate School of Science, Nagoya City University, Nagoya, Aichi 467-8501, Japan
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Kwon E, Matsukawa T, Hoshikawa A, Ishigaki T, Aoyagi S, Kawachi K, Kasama Y. Direct observation of nucleus of lithium in a C60 fullerene cage by neutron diffraction study. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Miwa K, Aoyagi S, Sasamori T, Morisako S, Ueno H, Matsuo Y, Yorimitsu H. Facile Multiple Alkylations of C 60 Fullerene. Molecules 2022; 27:molecules27020450. [PMID: 35056764 PMCID: PMC8779915 DOI: 10.3390/molecules27020450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/30/2021] [Accepted: 01/06/2022] [Indexed: 11/24/2022]
Abstract
The reduction of fullerene (C60) with sodium dispersion in the presence of an excess amount of dipropyl sulfate was found to yield highly propylated fullerene, C60(nC3H7)n (max. n = 24), and C60(nC3H7)20 was predominantly generated as determined by mass spectroscopy.
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Affiliation(s)
- Kazuhira Miwa
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, Nagoya 467-8501, Aichi, Japan; (K.M.); (S.M.)
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, Nagoya 467-8501, Aichi, Japan; (K.M.); (S.M.)
- Correspondence: (S.A.); (T.S.); Tel.: +81-52-872-5061 (S.A.); +81-29-853-4412 (T.S.)
| | - Takahiro Sasamori
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, Nagoya 467-8501, Aichi, Japan; (K.M.); (S.M.)
- Tsukuba Research Center for Energy Materials Sciences (TREMS), Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8571, Ibaraki, Japan
- Correspondence: (S.A.); (T.S.); Tel.: +81-52-872-5061 (S.A.); +81-29-853-4412 (T.S.)
| | - Shogo Morisako
- Department of Information and Basic Science, Graduate School of Science, Nagoya City University, Nagoya 467-8501, Aichi, Japan; (K.M.); (S.M.)
- Tsukuba Research Center for Energy Materials Sciences (TREMS), Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8571, Ibaraki, Japan
| | - Hiroshi Ueno
- Creative Interdisciplinary Research Division, Frontier Research Institute for Interdisciplinary Sciences and Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Miyagi, Japan;
| | - Yutaka Matsuo
- Department of Chemical System Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Aichi, Japan;
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan;
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Affiliation(s)
- Tianqing Zhang
- Graduate School of Science Nagoya City University Nagoya Aichi 467-8501 Japan
| | - Vladimir Ya. Lee
- Division of Chemistry Faculty of Pure and Applied Sciences University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
| | - Shogo Morisako
- Division of Chemistry Faculty of Pure and Applied Sciences University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
- Tsukuba Research Center for Energy Materials Sciences (TREMS) University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
| | - Shinobu Aoyagi
- Graduate School of Science Nagoya City University Nagoya Aichi 467-8501 Japan
| | - Takahiro Sasamori
- Division of Chemistry Faculty of Pure and Applied Sciences University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
- Tsukuba Research Center for Energy Materials Sciences (TREMS) University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
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Aoyagi S, Miwa K, Osawa H, Sugimoto K, Takeda H. Time-resolved structure analysis of vibrating gallium phosphate under alternating electric field. Acta Crystallogr A Found Adv 2021. [DOI: 10.1107/s0108767321086165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Miwa K, Aoyagi S, Sasamori T, Ueno H, Okada H, Ohkubo K. Anionic Fluorinated Zn-porphyrin Combined with Cationic Endohedral Li-fullerene for Long-Lived Photoinduced Charge Separation with Low Energy Loss. J Phys Chem B 2021; 125:918-925. [PMID: 33445877 DOI: 10.1021/acs.jpcb.0c10450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Here we report an anionic meso-tetrakis(4-carboxymethylthio-2,3,5,6-tetrafluorophenyl) zinc porphyrin (ZnTF4PPTC4-) to form a supramolecular complex with a cationic lithium endohedral [60]fullerene (Li+@C60). The supramolecular ZnTF4PPTC4-/Li+@C60 complex formed by strong electrostatic attraction with a large binding constant generates a long-lived charge-separated (CS) state with low energy loss by photoinduced electron transfer from ZnTF4PPTC4- to Li+@C60. The anionic fluorinated zinc porphyrin with high oxidation potential reduces the energy loss associated with the charge separation and enhances the energy level of the CS state. The energy level of the CS state determined by electrochemical measurements is at 0.94 eV, which is much higher than that of a similar supramolecular complex using an anionic meso-tetrakis(sulfonatophenyl) zinc porphyrin (ZnTPPS4-) at 0.55 eV. Time-resolved transient absorption spectroscopy demonstrates that ZnTF4PPTC4-/Li+@C60 generates a long-lived CS state with a lifetime of 0.29 ms in a binary solvent of acetonitrile and chlorobenzene. The lifetime of the CS state is comparable to that of ZnTPPS4-/Li+@C60 in benzonitrile.
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Affiliation(s)
- Kazuhira Miwa
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Takahiro Sasamori
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan.,Division of Chemistry, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Sciences (TREMS), University of Tsukuba, Tsukuba 305-8571, Japan
| | - Hiroshi Ueno
- Creative Interdisciplinary Research Division, Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, Sendai 980-8578, Japan.,Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Hiroshi Okada
- Fukamatsugumi Co., Ltd., Sendai 981-0931, Japan.,Idea International Co., Ltd., Sendai 981-0922, Japan.,Center for Fundamental and Applied Research of Novel Nanocarbon Derivatives, Center for Key Interdisciplinary Research, Tohoku University, Sendai 980-8578, Japan
| | - Kei Ohkubo
- Institute for Advanced Co-Creation Studies, Open and Transdisciplinary Research Initiatives, Osaka University, Suita 565-0871, Japan
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Shirahata K, Takashika M, Hirabayashi K, Hasegawa M, Otani H, Yamamoto K, Ie Y, Shimizu T, Aoyagi S, Iyoda M. Reduction of Ethynylenes to Vinylenes in a Macrocyclic π-Extended Thiophene Skeleton Under McMurry Coupling Conditions. J Org Chem 2021; 86:302-309. [PMID: 33290650 DOI: 10.1021/acs.joc.0c02080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
McMurry coupling is one of the most useful and convenient tools for the preparation of π-conjugated molecules. However, for the synthesis of strained macrocycles containing ethynylene linkages, reduction of ethynylene to vinylene linkage sometimes took place. Especially, for the synthesis of macrocyclic π-extended thiophene hexamers using McMurry coupling of dialdehyde 1 composed of three thienylene, two ethynylene, and two formyl groups, reduction of ethynylenes to vinylenes often takes place to produce unique products in a one-pot procedure, depending on very small steric and electronic effects such as reaction temperature, amounts of titanium reagent, and substituents of thiophene hexamers. The attractive structures and functional properties of reduced thiophene hexamers have been determined using X-ray analysis and OFET measurements.
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Affiliation(s)
- Keigo Shirahata
- Graduate School of Environment and Information Sciences, Yokohama National University, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Masataka Takashika
- Graduate School of Environment and Information Sciences, Yokohama National University, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Kazunori Hirabayashi
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Masashi Hasegawa
- School of Science, Kitasato University, Sagamihara, Kanagawa 252-0373, Japan
| | - Hiroyuki Otani
- Graduate School of Environment and Information Sciences, Yokohama National University, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Keitaro Yamamoto
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Yutaka Ie
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Toshio Shimizu
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Masahiko Iyoda
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
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14
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Pan Y, Morisako S, Aoyagi S, Sasamori T. Generation of Bis(ferrocenyl)silylenes from Siliranes. Molecules 2020; 25:molecules25245917. [PMID: 33327589 PMCID: PMC7765056 DOI: 10.3390/molecules25245917] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/07/2020] [Accepted: 12/09/2020] [Indexed: 11/16/2022] Open
Abstract
Divalent silicon species, the so-called silylenes, represent attractive organosilicon building blocks. Isolable stable silylenes remain scarce, and in most hitherto reported examples, the silicon center is stabilized by electron-donating substituents (e.g., heteroatoms such as nitrogen), which results in electronic perturbation. In order to avoid such electronic perturbation, we have been interested in the chemistry of reactive silylenes with carbon-based substituents such as ferrocenyl groups. Due to the presence of a divalent silicon center and the redox-active transition metal iron, ferrocenylsilylenes can be expected to exhibit interesting redox behavior. Herein, we report the design and synthesis of a bis(ferrocenyl)silirane as a precursor for a bis(ferrocenyl)silylene, which could potentially be used as a building block for redox-active organosilicon compounds. It was found that the isolated bis(ferrocenyl)siliranes could be a bottleable precursor for the bis(ferrocenyl)silylene under mild conditions.
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Affiliation(s)
- Yang Pan
- Graduate School of Science, Nagoya City University, Nagoya, Aichi 467-8501, Japan; (Y.P.); (S.A.)
| | - Shogo Morisako
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan;
| | - Shinobu Aoyagi
- Graduate School of Science, Nagoya City University, Nagoya, Aichi 467-8501, Japan; (Y.P.); (S.A.)
| | - Takahiro Sasamori
- Graduate School of Science, Nagoya City University, Nagoya, Aichi 467-8501, Japan; (Y.P.); (S.A.)
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan;
- Correspondence: ; Tel.: +81-29-853-4412
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15
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Sakabe M, Ooizumi A, Fujita W, Aoyagi S, Sato S. Synthesis and Molecular Structure of Pseudo‐Hexacoordinated Pnictines Bearing 2‐Phenylpyridine Ligands. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000795] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Masato Sakabe
- Department of Chemistry Graduate School of Science Tokyo Metropolitan University 1‐1 Minami‐osawa, Hachioji 192‐0397 Tokyo Japan
| | - Akihisa Ooizumi
- Department of Chemistry Graduate School of Science Tokyo Metropolitan University 1‐1 Minami‐osawa, Hachioji 192‐0397 Tokyo Japan
| | - Wataru Fujita
- Faculty of Science and Technology Seikei University 3‐3‐1 Kichijoji‐kitamachi, Musashino 180‐8633 Tokyo Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science Nagoya City University 467‐8501 Nagoya Japan
| | - Soichi Sato
- Department of Chemistry Graduate School of Science Tokyo Metropolitan University 1‐1 Minami‐osawa, Hachioji 192‐0397 Tokyo Japan
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16
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Schneider P, Verloh F, Portz A, Aoyagi S, Rohnke M, Dürr M. Direct Analysis of Ion-Induced Peptide Fragmentation in Secondary-Ion Mass Spectrometry. Anal Chem 2020; 92:15604-15610. [PMID: 33170642 DOI: 10.1021/acs.analchem.0c03765] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Primary-ion-induced fragmentation in organic molecules can strongly influence the results in secondary-ion mass spectrometry (SIMS) of organic and biomolecular samples. In order to characterize this ion-induced fragmentation, oligopeptide samples irradiated in SIMS experiments were investigated by means of desorption/ionization induced by neutral SO2 clusters (DINeC). The latter is a nondestructive desorption method for mass spectrometry of biomolecules, which gives direct access to the fragments induced in the sample. Comparison of TOF-SIMS and DINeC mass spectra revealed qualitative differences between the fragments, which remain in the sample and the fragments sputtered during ion bombardment. The fragmentation strength and its spatial distribution were found to be quantitatively different for Bi1+, Bi3+, and Ar1000+ primary ions, leading to different distributions of the degree of fragmentation in the samples as directly measured by means of DINeC depth profiles.
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Affiliation(s)
- P Schneider
- Institut für Angewandte Physik and Zentrum für Materialforschung, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - F Verloh
- Institut für Angewandte Physik and Zentrum für Materialforschung, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany.,Physikalisch-Chemisches Institut and Zentrum für Materialforschung, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany
| | - A Portz
- Institut für Angewandte Physik and Zentrum für Materialforschung, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
| | - S Aoyagi
- Department of Materials and Life Science, Seikei University, 3-3-1, Kichijyoji-kitamachi, Musashino-shi, Tokyo 180-8633, Japan
| | - M Rohnke
- Physikalisch-Chemisches Institut and Zentrum für Materialforschung, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany
| | - M Dürr
- Institut für Angewandte Physik and Zentrum für Materialforschung, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
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17
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Iyoda M, Takashika M, Hasegawa M, Otani H, Mizuno S, Miwa K, Kariya W, Fujiwara T, Shimizu H, Aoyagi S. Reversible Color and Shape Changes of Nanostructured Fibers of a Macrocyclic π-Extended Thiophene Hexamer Promoted by Adsorption and Desorption of Organic Vapor. J Am Chem Soc 2020; 142:13662-13666. [PMID: 32693586 DOI: 10.1021/jacs.0c05340] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A phenyl-substituted macrocyclic π-extended thiophene hexamer 1, composed of four thienylene-ethynylene and two thienylene-vinylene units, has a solid-state structure in which π-π, CH-π, and van der Waals interactions occur. Slow addition of acetone to a solution of 1 in CS2 produces a yellow nanostructured fiber 1-A containing a 1:1.5:1 ratio of 1, acetone, and CS2. Over a 2 min period at 25 °C, 1-A gradually changes to an orange fiber 1-B containing a 1:0.5:1 ratio of 1, acetone, and CS2. On exposure to acetone vapor, 1-B regenerates 1-A (vapochromism), and removal of all solvents from 1-A and 1-B generates a red-orange fiber 1-C, which upon brief immersion in acetone/CS2 produces 1-A. Furthermore, 1-C is converted to orange yellow fiber 1-D upon exposure to acetone vapor for 1 s at 25 °C. Analysis of the horizontal and vertical profiles of the X-ray diffraction (XRD) patterns shows that removal of solvent from 1-A reversibly creates 1-B in conjunction with a shape and size change along with arching.
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Affiliation(s)
- Masahiko Iyoda
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Masataka Takashika
- Graduate School of Environment and Information Sciences, Yokohama National University, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Masashi Hasegawa
- School of Science, Kitasato University, Sagamihara, Kanagawa 252-0373, Japan
| | - Hiroyuki Otani
- Graduate School of Environment and Information Sciences, Yokohama National University, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Saori Mizuno
- Graduate School of Environment and Information Sciences, Yokohama National University, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Kazuhira Miwa
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Wakana Kariya
- Graduate School of Environment and Information Sciences, Yokohama National University, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Toshihiro Fujiwara
- Graduate School of Environment and Information Sciences, Yokohama National University, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Hideyuki Shimizu
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
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18
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Fujiwara T, Muranaka A, Nishinaga T, Aoyagi S, Kobayashi N, Uchiyama M, Otani H, Iyoda M. Preparation, Spectroscopic Characterization and Theoretical Study of a Three-Dimensional Conjugated 70 π-Electron Thiophene 6-mer Radical Cation π-Dimer. J Am Chem Soc 2020; 142:5933-5937. [PMID: 32105450 DOI: 10.1021/jacs.9b13573] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A radical cation, generated from an extended π-conjugated thiophene 6-mer composed of four ethynylene-thienylene and two vinylene-thienylene units, was observed to form a stable three-dimensional π-dimer containing 70 π-electrons. The π-dimer prepared in solution was investigated by using magnetic circular dichroism (MCD), ESR spectroscopy, and UV-vis-NIR absorption spectroscopy. Probing the individual NIR absorption bands showed that the MCD signals can be assigned to the pseudo Faraday A term, indicating that the absorption bands are comprised of nearly degenerate electronic transitions. X-ray crystallographic analysis revealed that the π-dimer has a three-dimensional face-to-face and continuous π-conjugated donutlike structure. Analysis of the UV-vis-NIR and ESR spectra of the π-dimer in the solid state confirmed that it possesses the dimer structure. The prediction made by using TD-DFT calculations that the dimer would have a 70 π-electron diatropic nature was confirmed by using solid state 1H NMR spectroscopy.
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Affiliation(s)
- Toshihiro Fujiwara
- Graduate School of Environment and Information Sciences, Yokohama National University, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Atsuya Muranaka
- Cluster for Pioneering Research (CPR), Advanced Elements Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Tohru Nishinaga
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Nagao Kobayashi
- Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan
| | - Masanobu Uchiyama
- Cluster for Pioneering Research (CPR), Advanced Elements Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroyuki Otani
- Graduate School of Environment and Information Sciences, Yokohama National University, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Masahiko Iyoda
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
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19
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Fujiwara T, Takashika M, Hasegawa M, Ie Y, Aso Y, Aoyagi S, Otani H, Iyoda M. Small Structural Changes in the Alkyl Substituents of Macrocyclic π-Extended Thiophene Oligomers Causes a Key Effect on Their Stacking and Functional Properties. Chempluschem 2020; 84:694-703. [PMID: 31944018 DOI: 10.1002/cplu.201900062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/24/2019] [Indexed: 11/10/2022]
Abstract
Three new macrocyclic π-extended thiophene hexamers composed of four thienylene-ethynylene and two thienylene-vinylene units with or without four alkyl substituents have been synthesized. Despite similar shape-persistent structures in solution, the alkyl substituents control the solid-state structures and morphologies. The unsubstituted hexamer exhibited a planar conformation with a theoretically predicted structure in the solid state; however, the planar hexamer with four ethyl substituents formed a closely stacked columnar crystal structure to exhibit π-π interactions. Interestingly, the hexamer with four butyl substituents adopted both planar and twisted conformations in the solid state, exhibiting polymorphism based on induced-fit stacking of molecules. Thus, the butyl-substituted hexamer produces a mixture of yellow, orange, and red single crystals from toluene/acetone, and X-ray analysis revealed six different conformations. Consequently, the small structural difference in the macrocycles causes a key effect on their functional properties in the solid state, and their morphology governs electrical conductivity and organic field-effect-transistor activity. The polymorphism of the hexamers was applied to the switching of film morphology.
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Affiliation(s)
- Toshihiro Fujiwara
- Graduate School of Environment and Information Sciences, Yokohama National University Hodogaya-ku, Yokohama, Kanagawa, 240-8501, Japan
| | - Masataka Takashika
- Graduate School of Environment and Information Sciences, Yokohama National University Hodogaya-ku, Yokohama, Kanagawa, 240-8501, Japan
| | - Masashi Hasegawa
- School of Science, Kitasato University Sagamihara, Kanagawa, 252-0373, Japan
| | - Yutaka Ie
- The Institute of Scientific and Industrial Research, Osaka University Ibaraki, Osaka, 567-0047, Japan
| | - Yoshio Aso
- The Institute of Scientific and Industrial Research, Osaka University Ibaraki, Osaka, 567-0047, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Hiroyuki Otani
- Graduate School of Environment and Information Sciences, Yokohama National University Hodogaya-ku, Yokohama, Kanagawa, 240-8501, Japan
| | - Masahiko Iyoda
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University Hachioji, Tokyo, 192-0397, Japan
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20
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Abstract
The two-dimensional quadratic lattice magnet, bis(glycolato)cobalt(ii) ([Ni(HOCH2CO2)2]), showed antiferromagnetic ordering at 27.1 K.
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Affiliation(s)
- Tomohiro Nakane
- Department of Information and Basic Science
- Graduate School of Natural Science
- Nagoya City University
- Nagoya 467-8501
- Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science
- Graduate School of Natural Science
- Nagoya City University
- Nagoya 467-8501
- Japan
| | - Wataru Fujita
- General Education
- Faculty of Science and Technology
- Seikei University
- Tokyo 180-8633
- Japan
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21
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Aoyagi S, Osawa H, Sugimoto K, Nakahira Y, Moriyoshi C, Kuroiwa Y, Takeda H. Time-resolved structure analysis of piezoelectric crystals resonantly vibrating under alternating electric field. Acta Crystallogr A Found Adv 2019. [DOI: 10.1107/s2053273319089253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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22
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Fujiwara T, Takashika M, Hasegawa M, Ie Y, Aso Y, Aoyagi S, Otani H, Iyoda M. Cover Feature: Small Structural Changes in the Alkyl Substituents of Macrocyclic π‐Extended Thiophene Oligomers Causes a Key Effect on Their Stacking and Functional Properties (ChemPlusChem 6/2019). Chempluschem 2019. [DOI: 10.1002/cplu.201900275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Toshihiro Fujiwara
- Graduate School of Environment and Information SciencesYokohama National University Hodogaya-ku, Yokohama Kanagawa 240-8501 Japan
| | - Masataka Takashika
- Graduate School of Environment and Information SciencesYokohama National University Hodogaya-ku, Yokohama Kanagawa 240-8501 Japan
| | - Masashi Hasegawa
- School of ScienceKitasato University Sagamihara Kanagawa 252-0373 Japan
| | - Yutaka Ie
- The Institute of Scientific and Industrial ResearchOsaka University Ibaraki Osaka 567-0047 Japan
| | - Yoshio Aso
- The Institute of Scientific and Industrial ResearchOsaka University Ibaraki Osaka 567-0047 Japan
| | - Shinobu Aoyagi
- Department of Information and Basic ScienceNagoya City University Nagoya 467-8501 Japan
| | - Hiroyuki Otani
- Graduate School of Environment and Information SciencesYokohama National University Hodogaya-ku, Yokohama Kanagawa 240-8501 Japan
| | - Masahiko Iyoda
- Department of Chemistry, Graduate School of ScienceTokyo Metropolitan University Hachioji Tokyo 192-0397 Japan
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23
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Nakagawa T, Wang H, Zieleniewska A, Okada H, Aoyagi S, Guldi DM, Matsuo Y. Magnesium Tetra(phenylethynyl)porphyrin: Stepwise Synthetic Route, Crystal Structures, and Longer Singlet Excited-State Lifetime than Zinc Congener. Chem Asian J 2018; 13:3032-3039. [PMID: 30033583 DOI: 10.1002/asia.201800994] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Indexed: 11/10/2022]
Abstract
Magnesium tetra(arylethynyl)porphyrins (aryl=Ph or 4-CF3 C6 H4 ) were synthesized via 5,15-di(triisopropylsilylethynyl)-10,20-di(arylethynyl)porphyrin to ensure good solubility and high synthetic yields. Magnesium tetra(phenylethynyl)porphyrin was subjected to structural analyses and physico-chemical characterization. Single-crystal X-ray analysis revealed porous crystal structures featuring solvent molecules in their pores. From femtosecond transient absorption measurements we concluded that the singlet excited-state lifetime of magnesium tetra(phenylethynyl)porphyrin is with 7.4 ns substantially longer than that of its zinc congener with 2.8 ns; this is attributed to the lower atomic weight of magnesium compared with zinc.
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Affiliation(s)
- Takafumi Nakagawa
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Huan Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
| | - Anna Zieleniewska
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058, Erlangen, Germany
| | - Hiroshi Okada
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Dirk M Guldi
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058, Erlangen, Germany
| | - Yutaka Matsuo
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, China
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24
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Nakagawa A, Aoyagi S, Omachi H, Ishino K, Nishino M, Rio J, Ewels C, Shinohara H. Isolation and structure determination of missing fullerenes Gd@C 74(CF 3) n through in situ trifluoromethylation. R Soc Open Sci 2018; 5:181015. [PMID: 30839731 PMCID: PMC6170568 DOI: 10.1098/rsos.181015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 08/29/2018] [Indexed: 05/04/2023]
Abstract
Our trifluoromethyl functionalization method enables the dissolution and isolation of missing metallofullerenes of Gd@C74(CF3) n . After multi-stage high-performance liquid chromatography purification, Gd@C74(CF3)3 and two regioisomers of Gd@C74(CF3) are isolated. X-ray crystallographic analysis reveals that all of the isolated metallofullerenes react with CF3 groups on pentagons of the D 3 h-symmetry C74 cages. Highest occupied molecular orbital-lowest unoccupied molecular orbital gaps of these trifluoromethylated derivatives, estimated by absorption spectra, are in the range 0.71-1.06 eV, consistent with density functional calculations.
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Affiliation(s)
- Ayano Nakagawa
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Haruka Omachi
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
- Research Center for Materials Science, Nagoya University, Nagoya 464-8602, Japan
| | - Katsuma Ishino
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Makiko Nishino
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Jeremy Rio
- Institut des Materiaux Jean Rouxel (IMN), Université de Nantes, CNRS UMR6502, 2 Rue de la Houssiniere, BP32229, Nantes 44322, France
| | - Chris Ewels
- Institut des Materiaux Jean Rouxel (IMN), Université de Nantes, CNRS UMR6502, 2 Rue de la Houssiniere, BP32229, Nantes 44322, France
| | - Hisanori Shinohara
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
- Institute for Advanced Research, Nagoya University, Nagoya 464-8602, Japan
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25
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Nakagawa A, Nishino M, Niwa H, Ishino K, Wang Z, Omachi H, Furukawa K, Yamaguchi T, Kato T, Bandow S, Rio J, Ewels C, Aoyagi S, Shinohara H. Crystalline functionalized endohedral C 60 metallofullerides. Nat Commun 2018; 9:3073. [PMID: 30082836 PMCID: PMC6078994 DOI: 10.1038/s41467-018-05496-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 07/02/2018] [Indexed: 11/09/2022] Open
Abstract
Endohedral metallofullerenes have been extensively studied since the first experimental observation of La@C60 in a laser-vaporized supersonic beam in 1985. However, most of these studies have focused on metallofullerenes larger than C60 such as (metal)@C82, and there are no reported purified C60-based monomeric metallofullerenes, except for [Li@C60]+(SbCl6)- salt. Pure (metal)@C60 compounds have not been obtained because of their extremely high chemical reactivity. One route to their stabilization is through chemical functionalization. Here we report the isolation, structural determination and electromagnetic properties of functionalized crystalline C60-based metallofullerenes Gd@C60(CF3)5 and La@C60(CF3)5. Synchrotron X-ray single-crystal diffraction reveals that La and Gd atoms are indeed encapsulated in the Ih-C60 fullerene. The HOMO-LUMO gaps of Gd@C60 and La@C60 are significantly widened by an order of magnitude with addition of CF3 groups. Magnetic measurements show the presence of a weak antiferromagnetic coupling in Gd@C60(CF3)3 crystals at low temperatures.
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Affiliation(s)
- Ayano Nakagawa
- Department of Chemistry and Institute for Advanced Research, Nagoya University, Nagoya, 464-8602, Japan
| | - Makiko Nishino
- Department of Chemistry and Institute for Advanced Research, Nagoya University, Nagoya, 464-8602, Japan
| | - Hiroyuki Niwa
- Department of Chemistry and Institute for Advanced Research, Nagoya University, Nagoya, 464-8602, Japan
| | - Katsuma Ishino
- Department of Chemistry and Institute for Advanced Research, Nagoya University, Nagoya, 464-8602, Japan
| | - Zhiyong Wang
- Department of Chemistry and Institute for Advanced Research, Nagoya University, Nagoya, 464-8602, Japan
| | - Haruka Omachi
- Department of Chemistry and Institute for Advanced Research, Nagoya University, Nagoya, 464-8602, Japan
| | - Ko Furukawa
- Center for Coordination of Research Facilities, Institute for Research Promotion, Niigata University, Niigata, 950-2181, Japan
| | - Takahisa Yamaguchi
- Graduate School of Human and Environmental Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Tatsuhisa Kato
- Graduate School of Human and Environmental Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Shunji Bandow
- Faculty of Science and Technology, Department of Applied Chemistry, Meijo University, Nagoya, 468-8502, Japan
| | - Jeremy Rio
- Institut des Materiaux Jean Rouxel (IMN), Université de Nantes, CNRS UMR6502, BP32229, 44322, Nantes, France
| | - Chris Ewels
- Institut des Materiaux Jean Rouxel (IMN), Université de Nantes, CNRS UMR6502, BP32229, 44322, Nantes, France.
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Hisanori Shinohara
- Department of Chemistry and Institute for Advanced Research, Nagoya University, Nagoya, 464-8602, Japan.
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Aoyagi S, Miwa K, Ueno H, Okada H, Matsuo Y, Kokubo K. Structure of [60]fullerene with a mobile lithium cation inside. R Soc Open Sci 2018; 5:180337. [PMID: 30109088 PMCID: PMC6083684 DOI: 10.1098/rsos.180337] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 06/04/2018] [Indexed: 05/07/2023]
Abstract
The structure of crystalline [60]fullerene with a lithium cation inside (Li+@C60) was determined by synchrotron radiation X-ray diffraction measurements to understand the electrostatic and thermal properties of the encapsulated Li+ cation. Although the C60 cages show severe orientation disorder in [Li+@C60](TFPB-)·C4H10O and [Li+@C60](TFSI-)·CH2Cl2, the Li+ cations are rather ordered at specific positions by electrostatic interactions with coordinated anions outside the C60 cage. The Li+@C60 molecules in [Li+@C60](ClO4-) with a rock-salt-type cubic structure are fully disordered with almost uniform spherical shell charge densities even at 100 K by octahedral coordination of ClO4- tetrahedra and show no orientation ordering, unlike [Li+@C60](PF6-) and pristine C60. Single-bonded (Li+@C60-)2 dimers in [Li+@C60-](NiOEP)⋅CH2Cl2 are thermally stable even at 400 K and form Li+-C bonds which are shorter than Li+-C bonds in [Li+@C60](PF6-) and suppress the rotational motion of the Li+ cations.
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Affiliation(s)
- Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
- Author for correspondence: Shinobu Aoyagi e-mail:
| | - Kazuhira Miwa
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Hiroshi Ueno
- School of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin 130024, People's Republic of China
| | - Hiroshi Okada
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yutaka Matsuo
- School of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin 130024, People's Republic of China
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China
| | - Ken Kokubo
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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Shimizu H, Park KH, Otani H, Aoyagi S, Nishinaga T, Aso Y, Kim D, Iyoda M. A Saturn-Like Complex Composed of Macrocyclic Oligothiophene and C 60 Fullerene: Structure, Stability, and Photophysical Properties in Solution and the Solid State. Chemistry 2018; 24:3793-3801. [PMID: 29315942 DOI: 10.1002/chem.201705565] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Indexed: 11/11/2022]
Abstract
A Saturn-like 1:1 complex composed of macrocyclic oligothiophene E-8T7A and C60 fullerene (C60 ) was synthesized to investigate the interaction between macrocyclic oligothiophenes and C60 in solution and the solid state. Because the Saturn-like 1:1 complex E-8T7A⋅C60 is mainly stabilized by van der Waals interactions between C60 and the sulfur atoms of the E-8T7A macrocycle, C60 is rather weakly incorporated inside the macro-ring in solution. However, in the solid state the Saturn-like 1:1 complex preferentially formed single crystals or nanostructured polymorphs. Interestingly, X-ray analysis and theoretical calculations exhibited hindered rotation of C60 in the Saturn-like complex due to interactions between C60 and the sulfur atoms. Furthermore, the photoinduced charge transfer (CT) interaction between E-8T7A and C60 in solution was investigated by using femtosecond transient absorption (TA) spectroscopy. The ultrafast TA spectral changes in the photoinduced absorption bands were attributed to the CT process in the Saturn-like structure.
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Affiliation(s)
- Hideyuki Shimizu
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo, 192-0397, Japan
| | - Kyu Hyung Park
- Department of Chemistry and Spectroscopy Laboratory for, Functional π-Electronic Systems, Yonsei University, Seoul, 03722, Korea
| | - Hiroyuki Otani
- Graduate School of Environment and Information Sciences, Yokohama National University, Hodogaya-ku, Yokohama, Kanagawa, 240-8501, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya, 467-8501, Japan
| | - Tohru Nishinaga
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo, 192-0397, Japan
| | - Yoshio Aso
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka, 767-0047, Japan
| | - Dongho Kim
- Department of Chemistry and Spectroscopy Laboratory for, Functional π-Electronic Systems, Yonsei University, Seoul, 03722, Korea
| | - Masahiko Iyoda
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo, 192-0397, Japan
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Sakai K, Fukui S, Yabuuchi S, Aoyagi S, Tsumura Y. Expression of theSaccharomyces Diastaticus STA1Gene in Brewing Yeasts. Journal of the American Society of Brewing Chemists 2018. [DOI: 10.1094/asbcj-47-0087] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- K. Sakai
- Central Research Laboratories, Asahi Breweries Ltd., Ohmore-kita 2-13-1, Ohta-ku, Tokyo 143, Japan
| | | | - S. Yabuuchi
- Central Research Laboratories, Asahi Breweries Ltd., Ohmore-kita 2-13-1, Ohta-ku, Tokyo 143, Japan
| | - S. Aoyagi
- Central Research Laboratories, Asahi Breweries Ltd., Ohmore-kita 2-13-1, Ohta-ku, Tokyo 143, Japan
| | - Y. Tsumura
- Central Research Laboratories, Asahi Breweries Ltd., Ohmore-kita 2-13-1, Ohta-ku, Tokyo 143, Japan
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Ueno H, Okada H, Aoyagi S, Matsuo Y. Synthesis and Crystal Structure of Li +@Fluoreno[60]fullerene: Effect of Encapsulated Lithium Ion on Electrochemistry of Spiroannelated Fullerene. J Org Chem 2017; 82:11631-11635. [PMID: 29022343 DOI: 10.1021/acs.joc.7b01893] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The reaction of [Li+@C60]TFSI- (TFSI = bis(trifluoromethanesulfonyl)imide) with 9-diazofluorene directly produced a [6,6]-adduct of lithium-ion-containing fluoreno[60]fullerene, [6,6]-[Li+@C60(fluoreno)]TFSI-, which was crystallographically characterized. Cyclic voltammetry of the compound showed a reversible one-electron reduction wave at -0.51 V (vs Fc/Fc+) and an irreversible reduction wave for the second electron. The latter was attributed to opening of the three-membered ring due to strong stabilization of the resulting sp3-carbanion by the encapsulated Li+ and formation of a 14π-electron aromatic fluorenyl anion.
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Affiliation(s)
- Hiroshi Ueno
- School of Chemistry, Northeast Normal University , 5268 Renmin Street, Changchun, Jilin 130024, PR China
| | - Hiroshi Okada
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8565, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University , Nagoya 467-8501, Japan
| | - Yutaka Matsuo
- School of Chemistry, Northeast Normal University , 5268 Renmin Street, Changchun, Jilin 130024, PR China.,Department of Mechanical Engineering, School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8565, Japan.,Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , 96 Jinzhai Road, Hefei, Anhui 230026, PR China
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Okada H, Kawakami H, Aoyagi S, Matsuo Y. Crystallographic Structure Determination of Both [5,6]- and [6,6]-Isomers of Lithium-Ion-Containing Diphenylmethano[60]fullerene. J Org Chem 2017; 82:5868-5872. [PMID: 28486809 DOI: 10.1021/acs.joc.7b00730] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Organic functionalization of lithium-ion-containing [60]fullerene, Li+@C60, was performed by using diphenyl(diazo)methane as a stable, readily available diazo compound to obtain lithium-ion-containing [5,6]- and [6,6]-diphenylmethano[60]fullerenes, Li+@C61Ph2. The bis(trifluoromethanesulfonyl)imide (TFSI) salts of [5,6]- and [6,6]-Li+@C61Ph2 were successfully separated by using a cation exchange column with eluent containing LiTFSI. Improved separation protocol and high crystallinity of ionic components in less polar solvents enabled separate crystallization of each isomer. Both [5,6]-open and [6,6]-closed structures of Li+@C61Ph2 were determined by synchrotron radiation X-ray crystallography. Elucidating the [5,6]-open methano[60]fullerene (fulleroid) structure will contribute to materials research on fulleroids.
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Affiliation(s)
- Hiroshi Okada
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8565, Japan
| | - Hiroki Kawakami
- Department of Chemistry, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University , Nagoya 467-8501, Japan
| | - Yutaka Matsuo
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8565, Japan.,Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China , 96 Jinzhai Road, Hefei, Anhui 230026, China
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31
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Iyoda M, Shimizu H, Aoyagi S, Okada H, Zhou B, Matsuo Y. Structures and properties of Saturn-like complexes composed of oligothiophene macrocycle with methano[60]fullerene and [70]fullerene. CAN J CHEM 2017. [DOI: 10.1139/cjc-2016-0461] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
π-Expanded oligothienylene macrocycle with a large inner cavity incorporates fullerenes such as methano[60]fullerene (C61H2) and [70]fullerene (C70) inside to form Saturn-like complexes. Although the oligothiophene macrocycle weakly interacts with fullerenes in solution, it forms stable Saturn-like fullerene complexes in the solid state. X-ray analysis of the Saturn-like complexes exhibited short contacts between the sulfur atoms of the oligothiophene macrocycle and fullerene carbons, which hinder the rotation of fullerenes. As a result, the non-covalent interaction between the oligothiophene macrocycle and fullerenes was employed in crystal structure determination of fullerenes. UV–vis–NIR spectra of the Saturn-like complexes showed weak donor–acceptor interaction between the oligothiophene macrocycle and fullerenes.
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Affiliation(s)
- Masahiko Iyoda
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Hideyuki Shimizu
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Hiroshi Okada
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Biao Zhou
- Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550, Japan
| | - Yutaka Matsuo
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
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Aoyagi S, Matsumoto T, Shima Y, Ishikawa T. Usefulness of SDS-Minislab Method in Electrophoretic Analyses of Photographic Gelatin. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/00223638.1987.11738456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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34
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Ueno H, Aoyagi S, Yamazaki Y, Ohkubo K, Ikuma N, Okada H, Kato T, Matsuo Y, Fukuzumi S, Kokubo K. Electrochemical reduction of cationic Li +@C 60 to neutral Li +@C 60˙ -: isolation and characterisation of endohedral [60]fulleride. Chem Sci 2016; 7:5770-5774. [PMID: 30034715 PMCID: PMC6022080 DOI: 10.1039/c6sc01209d] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 06/20/2016] [Indexed: 01/06/2023] Open
Abstract
Li@C60 was synthesised by electrochemical reduction of ionic Li+@C60 salt. This is the first report of isolation and unambiguous characterisation of endohedral metallo[60]fullerene.
Lithium-encapsulated [60]fullerene Li@C60, namely, lithium-ion-encapsulated [60]fullerene radical anion Li+@C60˙–, was synthesised by electrochemical reduction of lithium-ion-encapsulated [60]fullerene trifluoromethanesulfonylimide salt [Li+@C60](TFSI–). The product was fully characterised by UV-vis-NIR absorption and ESR spectroscopy as well as single-crystal X-ray analysis for the co-crystal with nickel octaethylporphyrin. In solution Li@C60 exists as a monomer form dominantly, while in the crystal state it forms a dimer (Li@C60–Li@C60) through coupling of the C60 radical anion cage. These structural features were supported by DFT calculations at the M06-2X/6-31G(d) level of theory.
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Affiliation(s)
- Hiroshi Ueno
- Division of Applied Chemistry , Graduate School of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan .
| | - Shinobu Aoyagi
- Department of Information and Basic Science , Nagoya City University , Mizuho-ku , Nagoya 467-8501 , Japan
| | - Yu Yamazaki
- Division of Applied Chemistry , Graduate School of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan .
| | - Kei Ohkubo
- Department of Material and Life Science , Graduate School of Engineering , Osaka University , ALCA and SENTAN , Japan Science and Technology (JST) , Suita , Osaka 565-0871 , Japan.,Department of Chemistry and Nano Science , Ewha Womans University , Seoul 120-750 , Korea
| | - Naohiko Ikuma
- Division of Applied Chemistry , Graduate School of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan .
| | - Hiroshi Okada
- Department of Mechanical Engineering , School of Engineering , The University of Tokyo , Bunkyo-ku , Tokyo 113-8656 , Japan
| | - Tatsuhisa Kato
- Department of Interdisciplinary Environment , Graduate School of Human and Environmental Studies , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan
| | - Yutaka Matsuo
- Department of Mechanical Engineering , School of Engineering , The University of Tokyo , Bunkyo-ku , Tokyo 113-8656 , Japan.,Hefei National Laboratory for Physical Sciences at Microscale , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul 120-750 , Korea.,Faculty of Science and Engineering , Meijo University , ALCA and SENTAN , Japan Science and Technology Agency (JST) , Nagoya , Aichi 468-0073 , Japan
| | - Ken Kokubo
- Division of Applied Chemistry , Graduate School of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan .
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Imafuku K, Natsuga K, Aoyagi S, Shimizu H. Mucosal hyperpigmentation from prophylactic minocycline for EGFR inhibitor. J Eur Acad Dermatol Venereol 2016; 30:690-2. [PMID: 25627561 DOI: 10.1111/jdv.12978] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K Imafuku
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - K Natsuga
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - S Aoyagi
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - H Shimizu
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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36
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Yoneyama S, Kodama T, Kikuchi K, Fujisawa T, Yamaguchi A, Sumiyama A, Shuku Y, Aoyagi S, Fujita W. Deuterium substitution effects on the structural and magnetic phase transitions of a hydrogen-bonded coordination polymer, bis(glycolato)copper(ii). Dalton Trans 2016; 45:16774-16778. [DOI: 10.1039/c6dt03592b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bis(glycolato)copper(ii) [Cu(HOCH2CO2)2] shows a large shift of the structural phase transition temperature by deuterium substitution of the hydroxyl groups in it.
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Affiliation(s)
- Shota Yoneyama
- Department of Chemistry
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Takeshi Kodama
- Department of Chemistry
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Koichi Kikuchi
- Department of Chemistry
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Takumi Fujisawa
- Department of Material Science
- University of Hyogo
- Hyogo 678-1297
- Japan
| | - Akira Yamaguchi
- Department of Material Science
- University of Hyogo
- Hyogo 678-1297
- Japan
| | - Akihiko Sumiyama
- Department of Material Science
- University of Hyogo
- Hyogo 678-1297
- Japan
| | - Yoshiaki Shuku
- Department of Chemistry
- Nagoya University
- Nagoya 464-8602
- Japan
| | - Shinobu Aoyagi
- Department of Information and Basic Science
- Nagoya City University
- Nagoya 467-8501
- Japan
| | - Wataru Fujita
- Department of Information and Basic Science
- Nagoya City University
- Nagoya 467-8501
- Japan
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37
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Wang Z, Aoyagi S, Omachi H, Kitaura R, Shinohara H. Isolation and Structure Determination of a Missing Endohedral Fullerene La@C70
through In Situ Trifluoromethylation. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508082] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Wang Z, Aoyagi S, Omachi H, Kitaura R, Shinohara H. Isolation and Structure Determination of a Missing Endohedral Fullerene La@C70
through In Situ Trifluoromethylation. Angew Chem Int Ed Engl 2015; 55:199-202. [DOI: 10.1002/anie.201508082] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 10/11/2015] [Indexed: 11/11/2022]
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39
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Hata H, Abe R, Suto A, Homma E, Fujita Y, Aoyagi S, Shimizu H. MMP13 can be a useful differentiating marker between squamous cell carcinoma and benign hyperkeratotic lesions in recessive dystrophic epidermolysis bullosa. Br J Dermatol 2015; 172:769-73. [PMID: 25066310 DOI: 10.1111/bjd.13302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2014] [Indexed: 02/02/2023]
Abstract
Recessive dystrophic epidermolysis bullosa (RDEB) is a severe hereditary mechanobullous disease resulting from mutations in the COL7A1 gene, coding for type VII collagen. Patients with RDEB tend to develop squamous cell carcinomas (SCCs) at sites of chronic ulceration or scarring on the whole body. Distinguishing SCC from benign hyperkeratotic lesions is often difficult, not only clinically but also histologically in patients with RDEB. We investigated several matrix metallopeptidase (MMP) subtypes by comparing the DNA amplification microarray findings between evident SCCs and benign hyperkeratotic lesions in the same patient with RDEB. We report that MMP13 was found to be strongly positive in SCCs but negative in benign hyperkeratotic lesions. We found that there is an evident difference in the transitional area between SCCs and benign hyperkeratotic lesions. We propose that MMP13 may be a useful differentiating marker between SCC and benign hyperkeratotic lesions in RDEB.
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Affiliation(s)
- H Hata
- Department of Dermatology, Hokkaido University Graduate School of Medicine, North 15 West 7, Sapporo, 060-8638, Japan
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40
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Nishibori E, Aoyagi S, Sakata M, Sakamoto R, Nishihara H. Crystal structure of (Z)-1-(ferrocenylethyn-yl)-10-(phenyl-imino)-anthracen-9(10H)-one from synchrotron X-ray powder diffraction. Acta Crystallogr Sect E Struct Rep Online 2014; 70:573-6. [PMID: 25552995 PMCID: PMC4257377 DOI: 10.1107/s1600536814025252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 11/17/2014] [Indexed: 11/10/2022]
Abstract
In the title compound, [Fe(C5H5)(C27H16NO)], designed and synthesized to explore a new electron-donor (D) and -acceptor (A) conjugated complex, the two cyclo-penta-dienyl rings adopt an eclipsed conformation. The anthracene tricycle is distorted towards a butterfly conformation and the mean planes of the outer benzene rings are inclined each to other at 22.7 (3)°. In the crystal, mol-ecules are paired into inversion dimers via π-π inter-actions. Weak inter-molecular C-H⋯π inter-actions link further these dimers into one-dimensional columns along the b axis, with the ferrocenylethynyl arms arranged between the stacks to fill the voids.
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Affiliation(s)
- Eiji Nishibori
- Division of Physics, Faculty of Pure and Applied Sciences, Center for Integrated Research in Fundamental Science and Engineering, Tsukuba Research Center for Interdisciplinary Materials Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Shinobu Aoyagi
- Department of Information and Biological Sciences, Nagoya City University, Nagoya 467-8501, Japan
| | - Makoto Sakata
- Japan Synchrotron Radiation Research Institute, SPring-8, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Ryota Sakamoto
- Department of Chemistry, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroshi Nishihara
- Department of Chemistry, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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41
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Kitamura S, Natsuga K, Imafuku K, Homma E, Yamane N, Aoyagi S, Matsumura T, Shimizu H. Metal implant-induced skin ulcer mimicking scrofuloderma. J Eur Acad Dermatol Venereol 2014; 30:449-50. [PMID: 25371032 DOI: 10.1111/jdv.12825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S Kitamura
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - K Natsuga
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - K Imafuku
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - E Homma
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - N Yamane
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - S Aoyagi
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - T Matsumura
- Motomachi Dermatology Clinic, Sapporo, Japan
| | - H Shimizu
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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Aoyagi S, Sugimoto K, Okada H, Hoshino N, Akutagawa T. Crystal Structure and Dielectric Property of Endohedral Lithium Fullerene. Acta Crystallogr A Found Adv 2014. [DOI: 10.1107/s2053273314098040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Endohedral lithium fullerene Li+@C60 can have a dielectric polarization by the off-centered location of the Li+ cation inside the C60 cage. The x-ray structure analysis of the PF6– salt [Li@C60](PF6) revealed that the Li+ cation occupies two off-centered equivalent positions at 20 K and hence the crystal is non-polar [1]. The disordered structure at low temperature is explained by a static orientation disorder of polar Li+@C60 cations and/or a dynamic tunneling of the Li+ cation inside the C60 cage. The Li+ tunneling would be suppressed by an intermolecular interaction at lower temperature and a dielectric phase transition might be induced. We reveal the dielectric property and crystal structure of [Li@C60](PF6) below 20 K in this study. The temperature dependence of the dielectric permittivity was measured for the single crystal down to 9 K. The dielectric permittivity increases with decreasing temperature according to the Curie-Weiss law. Such a behavior was also observed in H2O@C60 crystal but not in empty C60 crystal [2]. No dielectric phase transition was observed in H2O@C60 down to 8 K. In contrast, a dielectric anomaly suggesting a phase transition was observed in [Li@C60](PF6) around 18 K. The single-crystal x-ray diffraction experiment below 20 K was also performed at SPring-8 BL02B1. The crystal has a cubic structure at 20 K [1]. The temperature dependence of the cubic lattice constant shows no anomaly around 18 K. However, diffraction peaks that are forbidden for the given structure appear below 18 K. Thus the crystal symmetry is lowered by the dielectric phase transition. We present the result of the crystal structure analysis of the newly discovered low-temperature phase.
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Ueno H, Kawakami H, Nakagawa K, Okada H, Ikuma N, Aoyagi S, Kokubo K, Matsuo Y, Oshima T. Kinetic Study of the Diels–Alder Reaction of Li+@C60 with Cyclohexadiene: Greatly Increased Reaction Rate by Encapsulated Li+. J Am Chem Soc 2014; 136:11162-7. [DOI: 10.1021/ja505952y] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Hiroshi Ueno
- Division
of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hiroki Kawakami
- Department
of Chemistry, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Koji Nakagawa
- Division
of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hiroshi Okada
- Department
of Chemistry, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Naohiko Ikuma
- Division
of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Shinobu Aoyagi
- Department
of Information and Biological Sciences, Nagoya City University, Nagoya 467-8501, Japan
| | - Ken Kokubo
- Division
of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yutaka Matsuo
- Department
of Chemistry, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Takumi Oshima
- Division
of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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Hata H, Natsuga K, Aoyagi S, Homma E, Shimizu H. Solitary fibrous tumour fluctuating in size with menstrual cycle. Clin Exp Dermatol 2014; 39:753-5. [PMID: 24986672 DOI: 10.1111/ced.12387] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2014] [Indexed: 10/25/2022]
Affiliation(s)
- H Hata
- Department of Dermatology, Hokkaido University Graduate School of Medicine, N15W7, Kita-Ku, Sapporo, 060-8638, Japan.
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Homma E, Hata H, Tsujiwaki M, Aoyagi S, Shimizu H. Nanoparticle albumin-bound paclitaxel can be useful agent to advanced primary mucinous carcinoma of the skin. J Eur Acad Dermatol Venereol 2014; 29:2271-3. [PMID: 24910079 DOI: 10.1111/jdv.12574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- E Homma
- Department of Dermatology, Hokkaido University, Graduate School of Medicine, Sapporo, Japan
| | - H Hata
- Department of Dermatology, Hokkaido University, Graduate School of Medicine, Sapporo, Japan
| | - M Tsujiwaki
- Department of Dermatology, Hokkaido University, Graduate School of Medicine, Sapporo, Japan
| | - S Aoyagi
- Department of Dermatology, Hokkaido University, Graduate School of Medicine, Sapporo, Japan
| | - H Shimizu
- Department of Dermatology, Hokkaido University, Graduate School of Medicine, Sapporo, Japan
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Hata H, Aoyagi S, Homma E, Shimizu H. Lessons from 28 cases of reconstruction by lenticular island pedicle flap at a single institution. J Eur Acad Dermatol Venereol 2014; 29:1015-8. [PMID: 24911929 DOI: 10.1111/jdv.12575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 04/29/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND Lenticular island pedicle flap (LIPF) has been reported to be one of the most useful techniques for reconstructing middle cheek skin defects. LIPF may have been used all over the world on a daily basis; however, no reports have examined a large number of LIPF cases at a single institution. MATERIALS AND METHODS A total of 28 cases of reconstruction by LIPF at the Hokkaido University Hospital from 2005 to 2013 were analysed. We examined the tumour type, location, area of defect and presence/absence of antithrombotic treatment and complications, including transient circulatory impairment, damage to facial nerves and eyelid ectropion. RESULTS We found that nine patients had transiently impaired circulation. This complication was statistically more frequent in the patients without antithrombotic treatment than in the patients with antithrombotic treatment (0/8 vs. 10/20, P = 0.0292; Fisher's exact test). CONCLUSION We revelled that LIPF have been safely performed even under antithrombotic treatment, so, when patients are taking antithrombotic agents, we should choose LIPF rather than conventional flap including cheek flap, island pedicle flap and so on.
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Affiliation(s)
- H Hata
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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Tsujiwaki M, Hata H, Miyauchi T, Homma E, Aoyagi S, Shimizu H. Warty intralymphatic histiocytosis successfully treated with topical tacrolimus. J Eur Acad Dermatol Venereol 2014; 29:2267-9. [DOI: 10.1111/jdv.12570] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- M. Tsujiwaki
- Department of Dermatology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - H. Hata
- Department of Dermatology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - T. Miyauchi
- Department of Dermatology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - E. Homma
- Department of Dermatology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - S. Aoyagi
- Department of Dermatology; Hokkaido University Graduate School of Medicine; Sapporo Japan
| | - H. Shimizu
- Department of Dermatology; Hokkaido University Graduate School of Medicine; Sapporo Japan
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Homma E, Hata H, Aoyagi S, Shimizu H. Primary mucinous carcinoma of the skin with in-transit metastasis. J Eur Acad Dermatol Venereol 2014; 29:1655-7. [PMID: 24750401 DOI: 10.1111/jdv.12533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 03/28/2014] [Indexed: 12/01/2022]
Affiliation(s)
- E Homma
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - H Hata
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - S Aoyagi
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - H Shimizu
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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Hata H, Natsuga K, Aoyagi S, Homma E, Shimizu H. Ultrasound B-mode and elastographic findings of angiomatoid fibrous histiocytoma. Clin Exp Dermatol 2014; 39:538-9. [PMID: 24758358 DOI: 10.1111/ced.12314] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/2013] [Indexed: 11/30/2022]
Affiliation(s)
- H. Hata
- Department of Dermatology; Hokkaido University Graduate School of Medicine; North 15 West 7 Sapporo 060-8638 Japan
| | - K. Natsuga
- Department of Dermatology; Hokkaido University Graduate School of Medicine; North 15 West 7 Sapporo 060-8638 Japan
| | - S. Aoyagi
- Department of Dermatology; Hokkaido University Graduate School of Medicine; North 15 West 7 Sapporo 060-8638 Japan
| | - E. Homma
- Department of Dermatology; Hokkaido University Graduate School of Medicine; North 15 West 7 Sapporo 060-8638 Japan
| | - H. Shimizu
- Department of Dermatology; Hokkaido University Graduate School of Medicine; North 15 West 7 Sapporo 060-8638 Japan
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Kitamura S, Hata H, Homma E, Aoyagi S, Shimizu H. Pigmented skin metastasis of breast cancer showing dermoscopic features of malignant melanoma. J Eur Acad Dermatol Venereol 2014; 29:1034-6. [PMID: 24641177 DOI: 10.1111/jdv.12459] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- S Kitamura
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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