1
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Kaletová E, Santos Hurtado C, Císařová I, Teat SJ, Kaleta J. Triptycene-Based Molecular Rods for Langmuir-Blodgett Monolayers. Chempluschem 2022; 87:e202200023. [PMID: 35195369 DOI: 10.1002/cplu.202200023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/04/2022] [Indexed: 11/06/2022]
Abstract
Herein we introduce fully modular synthesis leading to three representative examples of rigid molecular rods that are intended to form sturdy monolayers on various surfaces. These molecules contain two triptycene units that are designed to interlock into a compact "double-decker" structure. Two of the three final products provided suitable crystals for X-ray diffraction (analyzed on synchrotron), allowing deeper insight into packing in the 3-D crystal lattice. The acidity of all three compounds were determined by capillary electrophoresis, and the pKa values ranged between 2.06-2.53. All three rigid rods easily formed Langmuir-Blodgett monolayers (LBMs) on the water-air interfaces, with the area per molecule equal to 55-59 Å2 /molecule, suggesting tight intermolecular packing. The thickness of all three films reached ∼19 Å after transfer to a gold (111) surface, meaning that individual molecules are tilted maximally 38° from the axis perpendicular to the surface. The structure of one of these films on a gold (111) surface was visualized by AFM. These geometrically unique molecules represent promising platforms with a wide scope of applicability in the supramolecular architecture.
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Affiliation(s)
- Eva Kaletová
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 160 00, Prague 6, Czech Republic
| | - Carina Santos Hurtado
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 160 00, Prague 6, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry Faculty of Science, Charles University in Prague, Hlavova 2030, 12840, Prague 2, Czech Republic
| | - Simon J Teat
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, 160 00, Prague 6, Czech Republic
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2
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Han DC, Tan YH, Li YK, Wen JH, Tang YZ, Wei WJ, Du PK, Zhang H. High-Temperature and Large-Polarization Ferroelectric with Second Harmonic Generation Response in a Novel Crown Ether Clathrate. Chemistry 2021; 27:13575-13581. [PMID: 34322911 DOI: 10.1002/chem.202101707] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Indexed: 11/11/2022]
Abstract
Molecular ferroelectrics of high-temperature reversible phase transitions are very rare and have attracted increasing attention in recent years. In this paper is described the successful synthesis of a novel high-temperature host-guest inclusion ferroelectric: [(C6 H5 NF3 )(18-crown-6)][BF4 ] (1) that shows a pair of reversible peaks at 348 K (heating) and 331 K (cooling) with a heat hysteresis about 17 K by differential scanning calorimetry measurements, thus indicating that 1 undergoes a reversible structural phase transition. Variable-temperature PXRD and temperature-dependent dielectric measurements further prove the phase-transition behavior of 1. The second harmonic response demonstrates that 1 belongs to a non-centrosymmetric space group at room temperature and is a good nonlinear optical material. In its semiconducting properties, 1 shows a wide optical band gap of about 4.43 eV that comes chiefly from the C, H and O atoms of the crystals. In particular, the ferroelectric measurements of 1 exhibit a typical polarization-electric hysteresis loop with a large spontaneous polarization (Ps ) of about 4.06 μC/cm2 . This finding offers an alternative pathway for designing new ferroelectric-dielectric and nonlinear optical materials and related physical properties in organic-inorganic and other hybrid crystals.
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Affiliation(s)
- Ding Chong Han
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, P. R. China
| | - Yu Hui Tan
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, P. R. China
| | - Yu Kong Li
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, P. R. China
| | - Jia Hui Wen
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, P. R. China
| | - Yun Zhi Tang
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, P. R. China
| | - Wen Juan Wei
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, P. R. China
| | - Peng Kang Du
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, P. R. China
| | - Hao Zhang
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, P. R. China
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3
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Komiya N, Ikeshita M, Tosaki K, Sato A, Itami N, Naota T. Catalytic Enantioselective Rotation of Watermill‐Shaped Dinuclear Pd Complexes. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100140] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Naruyoshi Komiya
- Department of Chemistry, Graduate School of Engineering Science Osaka University Machikaneyama, Toyonaka, Osaka 560-8531 Japan
- Chemistry Laboratory The Jikei University School of Medicine Kokuryo, Chofu, Tokyo 182-8570 Japan
| | - Masahiro Ikeshita
- Department of Chemistry, Graduate School of Engineering Science Osaka University Machikaneyama, Toyonaka, Osaka 560-8531 Japan
| | - Koichi Tosaki
- Department of Chemistry, Graduate School of Engineering Science Osaka University Machikaneyama, Toyonaka, Osaka 560-8531 Japan
| | - Atsushi Sato
- Department of Chemistry, Graduate School of Engineering Science Osaka University Machikaneyama, Toyonaka, Osaka 560-8531 Japan
| | - Nao Itami
- Department of Chemistry, Graduate School of Engineering Science Osaka University Machikaneyama, Toyonaka, Osaka 560-8531 Japan
| | - Takeshi Naota
- Department of Chemistry, Graduate School of Engineering Science Osaka University Machikaneyama, Toyonaka, Osaka 560-8531 Japan
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4
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García-González MC, Espinosa-Rocha J, Rodríguez-Cortés LA, Amador-Sánchez YA, Miranda LD, Rodríguez-Molina B. Pairing multicomponent stators with aromatic rotators for new emissive molecular rotors. Org Biomol Chem 2021; 19:3404-3412. [PMID: 33899881 DOI: 10.1039/d1ob00161b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We demonstrate here that the Ugi-Sonogashira protocol can be successfully used to obtain five new molecular rotors 10a-e with strong emission. They have been synthesized by combining multicomponent Ugi stators and several aromatic rotary components: phenylene, p-xylene, naphthalene and anthracene. The synthesized conjugated rotors are highly fluorescent (Φf = 0.39 to Φf = 0.10), and changes in their emission were observed upon variations of the surrounding media. Particularly, we found that they are sensitive to aggregation (THF/water) or high viscosity (methanol/glycerol) conditions. This work paves the way to develop new emissive rotors with exciting photophysical properties.
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Affiliation(s)
- Ma Carmen García-González
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S.N., Ciudad Universitaria, Coyoacán, Ciudad de México 04510, Mexico.
| | - Jorge Espinosa-Rocha
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S.N., Ciudad Universitaria, Coyoacán, Ciudad de México 04510, Mexico.
| | - Lizbeth A Rodríguez-Cortés
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S.N., Ciudad Universitaria, Coyoacán, Ciudad de México 04510, Mexico.
| | - Yoarhy A Amador-Sánchez
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S.N., Ciudad Universitaria, Coyoacán, Ciudad de México 04510, Mexico.
| | - Luis D Miranda
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S.N., Ciudad Universitaria, Coyoacán, Ciudad de México 04510, Mexico.
| | - Braulio Rodríguez-Molina
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior S.N., Ciudad Universitaria, Coyoacán, Ciudad de México 04510, Mexico.
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5
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Ehnbom A, Gladysz JA. Gyroscopes and the Chemical Literature, 2002–2020: Approaches to a Nascent Family of Molecular Devices. Chem Rev 2021; 121:3701-3750. [DOI: 10.1021/acs.chemrev.0c01001] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Andreas Ehnbom
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
| | - John A. Gladysz
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
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6
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Tsuchiya T, Inagaki Y, Yamaguchi K, Setaka W. Structure and Dynamics of Crystalline Molecular Gyrotops with a Difluorophenylene Rotor. J Org Chem 2021; 86:2423-2430. [DOI: 10.1021/acs.joc.0c02571] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Taro Tsuchiya
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Yusuke Inagaki
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Kentaro Yamaguchi
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki 769-2193, Kagawa, Japan
| | - Wataru Setaka
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 minami-Osawa, Hachioji, Tokyo 192-0397, Japan
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7
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Solid-State 2H NMR Study for Deuterated Phenylene Dynamics in a Crystalline Gyroscope-Like Molecule. CHEMISTRY 2021. [DOI: 10.3390/chemistry3010004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Molecular rotors have earned substantial popularity in recent times, owing to the unique dependence of its crystalline properties on the rotational dynamics of the rotor. We have recently reported the synthesis and crystal structure of a phenylene-bridged macrocage as a gyroscope-like molecule in the crystalline state. The dynamics of the phenylene moiety was probed by solid-state 13C CP/MAS proton dipolar dephasing NMR spectroscopy. Herein, solid-state 2H NMR studies were performed to study the dynamics of the gyroscope-like molecule with a deuterated rotor in the crystalline state. A spectrum with a narrow line shape was obtained at 300 K. The facile exchange among three stationary states, which was observed by X-ray crystallography, was clearly confirmed. Additionally, a crystal-to-crystal phase transition that switches the motion of the rotor was observed in the DSC analysis of the powdered sample.
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8
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Inagaki Y, Ueda S, Yamaguchi K, Setaka W. A Furan-2,5-diyl Bridged Macrocage as a Highly Distorted Molecular Gyrotop. CHEM LETT 2020. [DOI: 10.1246/cl.200533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yusuke Inagaki
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Satsuki Ueda
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Kentaro Yamaguchi
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
| | - Wataru Setaka
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
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9
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Jellen MJ, Ayodele MJ, Cantu A, Forbes MDE, Garcia-Garibay MA. 2D Arrays of Organic Qubit Candidates Embedded into a Pillared-Paddlewheel Metal–Organic Framework. J Am Chem Soc 2020; 142:18513-18521. [DOI: 10.1021/jacs.0c07251] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Marcus J. Jellen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Mayokun J. Ayodele
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403-0001, United States
| | - Annabelle Cantu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Malcolm D. E. Forbes
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403-0001, United States
| | - Miguel A. Garcia-Garibay
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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10
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Jiang X, Duan HB, Jellen MJ, Chen Y, Chung TS, Liang Y, Garcia-Garibay MA. Thermally Activated Transient Dipoles and Rotational Dynamics of Hydrogen-Bonded and Charge-Transferred Diazabicyclo [2.2.2]Octane Molecular Rotors. J Am Chem Soc 2019; 141:16802-16809. [DOI: 10.1021/jacs.9b07518] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Xing Jiang
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Hai-Bao Duan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
- School of Environmental Science, Nanjing Xiao Zhuang University, Nanjing, Jiangsu 211171, P. R. China
| | - Marcus J. Jellen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Yu Chen
- Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China
| | - Tim S. Chung
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Yong Liang
- Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, P. R. China
| | - Miguel A. Garcia-Garibay
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
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11
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Hashimoto H, Inagaki Y, Momma H, Kwon E, Setaka W. Kinetic Stabilization of Carbazole Nitroxides by Inclusion in a Macrocage and Their Electron Spin Resonance Characterization. J Org Chem 2019; 84:11783-11789. [PMID: 31442043 DOI: 10.1021/acs.joc.9b01686] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Some nitroxides, for example, tetramethylpyridiniumoxide, are known as stable radicals; however, carbazole nitroxide is less stable. The kinetic stabilization of labile radicals by introduction of bulky substituents is usually effective to investigate intrinsic properties of the molecule because of small electronic perturbation induced by the substituents. In this study, macrocage molecules with a carbazole nitroxide connected by covalent bonds were newly designed as kinetically stabilized carbazole nitroxides. The nitroxides were prepared and characterized by electron spin resonance spectroscopy. The caged nitroxides presented long half-lives (∼50 h) by kinetic analysis.
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Affiliation(s)
- Hikaru Hashimoto
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences , Tokyo Metropolitan University , Hachioji , Tokyo 192-0397 , Japan
| | - Yusuke Inagaki
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences , Tokyo Metropolitan University , Hachioji , Tokyo 192-0397 , Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Aoba-ku, Sendai 980-8578 , Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Aoba-ku, Sendai 980-8578 , Japan
| | - Wataru Setaka
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences , Tokyo Metropolitan University , Hachioji , Tokyo 192-0397 , Japan
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12
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Setaka W, Inagaki Y, Yamaguchi K. Chemistry of Macrocage Molecules with a Bridged π-Electron System as Crystalline Molecular Gyrotops. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wataru Setaka
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences, Tokyo Metropolitan University
| | | | - Kentaro Yamaguchi
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University
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13
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Hamer S, Röhricht F, Jakoby M, Howard IA, Zhang X, Näther C, Herges R. Synthesis of dipolar molecular rotors as linkers for metal-organic frameworks. Beilstein J Org Chem 2019; 15:1331-1338. [PMID: 31293682 PMCID: PMC6604738 DOI: 10.3762/bjoc.15.132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 05/31/2019] [Indexed: 12/02/2022] Open
Abstract
We report the synthesis of five dicarboxylic acid-substituted dipolar molecular rotors for the use as linker molecules in metal-organic frameworks (MOFs). The rotor molecules exhibit very low rotational barriers and decent to very high permanent, charge free dipole moments, as shown by density functional theory calculations on the isolated molecules. Four rotors are fluorescent in the visible region. The linker designs are based on push-pull-substituted phenylene cores with ethynyl spacers as rotational axes, functionalized with carboxylic acid groups for implementation in MOFs. The substituents at the phenylene core are chosen to be small to leave rotational freedom in solids with confined free volumes. The dipole moments are generated by electron-donating substituents (benzo-1,3-dioxole, benzo-1,4-dioxane, or benzo-2,1,3-thiadiazole annelation) and withdrawing substituents (difluoro, or dicyano substitution) at the opposite positions of the central phenylene core. A combination of 1,4-dioxane annelation and dicyano substitution generates a theoretically predicted, very high dipole moment of 10.1 Debye. Moreover, the molecules are sufficiently small to fit into cavities of 10 Å3. Hence, the dipolar rotors should be ideally suited as linkers in MOFs with potential applications as ferroelectric materials and for optical signal processing.
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Affiliation(s)
- Sebastian Hamer
- Otto-Diels-Institut für Organische Chemie, Kiel University, Otto-Hahn-Platz 4, D-24118 Kiel, Germany
| | - Fynn Röhricht
- Otto-Diels-Institut für Organische Chemie, Kiel University, Otto-Hahn-Platz 4, D-24118 Kiel, Germany
| | - Marius Jakoby
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Ian A Howard
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Xianghui Zhang
- Fakultät für Physik, Universität Bielefeld,Universitätsstr. 25, D-33615 Bielefeld, Germany
| | - Christian Näther
- Institut für Anorganische Chemie, Kiel University, Max-Eyth-Str. 2, D-24118 Kiel, Germany
| | - Rainer Herges
- Otto-Diels-Institut für Organische Chemie, Kiel University, Otto-Hahn-Platz 4, D-24118 Kiel, Germany
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14
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Aguilar-Granda A, Colin-Molina A, Jellen MJ, Núñez-Pineda A, Cifuentes-Quintal ME, Toscano RA, Merino G, Rodríguez-Molina B. Triggering the dynamics of a carbazole- p-[phenylene-diethynyl]-xylene rotor through a mechanically induced phase transition. Chem Commun (Camb) 2019; 55:14054-14057. [DOI: 10.1039/c9cc05672f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A crystalline molecular machine with several solid phases where only one is able to show intramolecular rotation.
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Affiliation(s)
- Andrés Aguilar-Granda
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México
| | - Abraham Colin-Molina
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México
| | - Marcus J. Jellen
- Department of Chemistry and Biochemistry
- University of California
- Los Angeles
- USA
| | - Alejandra Núñez-Pineda
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México
| | | | - Rubén Alfredo Toscano
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México
| | - Gabriel Merino
- Departamento de Física Aplicada
- Centro de Investigación y de Estudios Avanzados
- Unidad Mérida
- Mérida, Yuc
- Mexico
| | - Braulio Rodríguez-Molina
- Instituto de Química
- Universidad Nacional Autónoma de México
- Circuito Exterior
- Ciudad Universitaria
- Ciudad de México
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15
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Hashimoto H, Inagaki Y, Momma H, Kwon E, Yamaguchi K, Setaka W. Polarized fluorescence of a crystal having uniaxially oriented molecules by a carbazole-diyl-bridged macrocage. CrystEngComm 2019. [DOI: 10.1039/c9ce00706g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An axially oriented π-electron system is achieved in a single crystal of a macrocage molecule, and polarized fluorescence of the single crystal was observed.
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Affiliation(s)
- Hikaru Hashimoto
- Division of Applied Chemistry
- Faculty of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Yusuke Inagaki
- Division of Applied Chemistry
- Faculty of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules
- Graduate School of Science
- Tohoku University
- Sendai
- Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules
- Graduate School of Science
- Tohoku University
- Sendai
- Japan
| | - Kentaro Yamaguchi
- Faculty of Pharmaceutical Sciences at Kagawa Campus
- Tokushima Bunri University
- Sanuki
- Japan
| | - Wataru Setaka
- Division of Applied Chemistry
- Faculty of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
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16
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Ghosh A, Paul I, Saha S, Paululat T, Schmittel M. Machine Metathesis: Thermal and Catalyzed Exchange of Piston Rods in Multicomponent Nanorotor/Nanoslider Ensemble. Org Lett 2018; 20:7973-7976. [PMID: 30525699 DOI: 10.1021/acs.orglett.8b03541] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Three-component nanorotor R1 ( k298 = 80 kHz) and two-component slider-on-deck DS2 ( k298 = 440 kHz) were prepared from rotator S1 and stator [Cu3(1)]3+ and from S2 and deck D, respectively. Mixing of R1 with DS2 leads to clean metathesis, furnishing the slower nanodevices R2 ( k298 = 29.6 kHz) and DS1 ( k298 = 32.2 kHz). Exchange of the piston rods S1 and S2 is completed within 22 min (uncatalyzed) or 3 min (catalyzed) at 298 K.
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Affiliation(s)
- Amit Ghosh
- Center of Micro- and Nanochemistry and Engineering , University of Siegen, Organische Chemie I , Adolf-Reichwein-Str. 2 , D-57068 Siegen , Germany
| | - Indrajit Paul
- Center of Micro- and Nanochemistry and Engineering , University of Siegen, Organische Chemie I , Adolf-Reichwein-Str. 2 , D-57068 Siegen , Germany
| | - Suchismita Saha
- Center of Micro- and Nanochemistry and Engineering , University of Siegen, Organische Chemie I , Adolf-Reichwein-Str. 2 , D-57068 Siegen , Germany
| | - Thomas Paululat
- University of Siegen, Organische Chemie II , Adolf-Reichwein-Str. 2 , D-57068 Siegen , Germany
| | - Michael Schmittel
- Center of Micro- and Nanochemistry and Engineering , University of Siegen, Organische Chemie I , Adolf-Reichwein-Str. 2 , D-57068 Siegen , Germany
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