1
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Li XL, Niu KK, Yu S, Liu H, Xing LB. A supramolecular naphthalenediimide radical anion through host-guest interactions for photooxidation of alkylarenes to carbonyls. Chem Commun (Camb) 2024. [PMID: 39092786 DOI: 10.1039/d4cc02374a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
A supramolecular naphthalenediimide radical anion was developed through host-guest interactions between NDI and cucurbit[7]uril (CB[7]), which can be greatly promoted in the presence of chloride ions to obtain Cl˙ and NDI-2CB[7]˙-. Under the synergistic action of Cl˙ as a hydrogen atom transfer (HAT) agent and NDI-2CB[7]˙- transferring electrons to O2 to produce O2˙-, the photocatalytic oxidation reactions of alkylarenes to carbonyls can be realized with universal applicability.
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Affiliation(s)
- Xin-Long Li
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China.
| | - Kai-Kai Niu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China.
| | - Shengsheng Yu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China.
| | - Hui Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China.
| | - Ling-Bao Xing
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China.
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2
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Sambe K, Takeda T, Hoshino N, Matsuda W, Shimada K, Tsujita K, Maruyama S, Yamamoto S, Seki S, Matsumoto Y, Akutagawa T. Carrier Transport Switching of Ferroelectric BTBT Derivative. J Am Chem Soc 2024; 146:8557-8566. [PMID: 38484118 DOI: 10.1021/jacs.4c00514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Alkylamide-substituted [1]benzothieno[3,2-b][1]benzothiophene (BTBT) derivative of BTBT-NHCOC14H29 (1), which has ferroelectric N-H···O= hydrogen-bonding network of alkylamide group and two-dimensional (2D) electric structure of BTBT π-cores, was prepared to design the external electric field-responsive organic semiconductors. The short-chain derivative of BTBT-NHCOC3H7 (1') revealed the coexistence of a 2D electronic band structure based on the herringbone BTBT arrangement and the one-dimensional (1D) hydrogen-bonding chain. 1 formed a smectic E (SmE) liquid crystal phase above 412 K and showed ferroelectric hysteresis in the electric field-polarization (P-E) curves at 403-433 K. The remanent polarization (Pr) and coercive electric field (Ec) of 1 at 408 K, 0.1 Hz were 24.0 μC cm-2 and 5.54 V μm-1, respectively. By thermal annealing of thin-film 1 at 443 K, the molecular assembly structure of 1 changed from a monolayer to a bilayer structure with high crystallinity, resulting in conducting layers of BTBT parallel to the substrate surface. The organic field-effect transistor (OFET) device with thermally annealed thin-film 1 showed p-type semiconducting behavior with the hole mobility of 1.0 × 10-3 cm2 V-1 s-1. Furthermore, device 1 showed switching behavior of semiconducting properties by electric field poling and thermal annealing cycle. The electric field response of ferroelectrics modulated the molecular orientation and conduction properties of organic semiconductors, resulting in external electric field control of carrier transport properties.
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Affiliation(s)
- Kohei Sambe
- Graduate School of Engineering, Tohoku University, 6-6-07 Aramaki Aza Aoba, Aoba-Ku, Sendai 980-8579, Japan
| | - Takashi Takeda
- Graduate School of Engineering, Tohoku University, 6-6-07 Aramaki Aza Aoba, Aoba-Ku, Sendai 980-8579, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-Ku, Sendai 980-8577, Japan
- Department of Chemistry, Faculty of Science, Shinshu University, 3-1-1 Asahi, Matsumoto 390-8621, Japan
| | - Norihisa Hoshino
- Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 9050-2181, Japan
| | - Wakana Matsuda
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-Ku, Kyoto 615-8510, Japan
| | - Kazuki Shimada
- Graduate School of Engineering, Tohoku University, 6-6-07 Aramaki Aza Aoba, Aoba-Ku, Sendai 980-8579, Japan
| | - Kanae Tsujita
- Graduate School of Engineering, Tohoku University, 6-6-07 Aramaki Aza Aoba, Aoba-Ku, Sendai 980-8579, Japan
| | - Shingo Maruyama
- Graduate School of Engineering, Tohoku University, 6-6-07 Aramaki Aza Aoba, Aoba-Ku, Sendai 980-8579, Japan
| | - Shunsuke Yamamoto
- Graduate School of Engineering, Tohoku University, 6-6-07 Aramaki Aza Aoba, Aoba-Ku, Sendai 980-8579, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-Ku, Kyoto 615-8510, Japan
| | - Yuji Matsumoto
- Graduate School of Engineering, Tohoku University, 6-6-07 Aramaki Aza Aoba, Aoba-Ku, Sendai 980-8579, Japan
| | - Tomoyuki Akutagawa
- Graduate School of Engineering, Tohoku University, 6-6-07 Aramaki Aza Aoba, Aoba-Ku, Sendai 980-8579, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-Ku, Sendai 980-8577, Japan
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Luo H, Wan Q, Choi W, Tsutsui Y, Dmitrieva E, Du L, Phillips DL, Seki S, Liu J. Two-Step Synthesis of B 2 N 2 -Doped Polycyclic Aromatic Hydrocarbon Containing Pentagonal and Heptagonal Rings with Long-Lived Delayed Fluorescence. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301769. [PMID: 37093207 DOI: 10.1002/smll.202301769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/03/2023] [Indexed: 05/03/2023]
Abstract
Pentagon-heptagon embedded polycyclic aromatic hydrocarbons (PAHs) have aroused increasing attention in recent years due to their unique physicochemical properties. Here, for the first time, this report demonstrates a facile method for the synthesis of a novel B2 N2 -doped PAH (BN-2) containing two pairs of pentagonal and heptagonal rings in only two steps. In the solid state of BN-2, two different conformations, including saddle-shaped and up-down geometries, are observed. Through a combined spectroscopic and calculation study, the excited-state dynamics of BN-2 is well-investigated in this current work. The resultant pentagon-heptagon embedded B2 N2 -doped BN-2 displays both prompt fluorescence and long-lived delayed fluorescence components at room temperature, with the triplet excited-state lifetime in the microsecond time region (τ = 19 µs). The triplet-triplet annihilation is assigned as the mechanism for the observed long-lived delayed fluorescence. Computational analyses attributed this observation to the small energy separation between the singlet and triplet excited states, facilitating the intersystem crossing (ISC) process which is further validated by the ultrafast spectroscopic measurements.
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Affiliation(s)
- Huan Luo
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, China
| | - Qingyun Wan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Wookjin Choi
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Yusuke Tsutsui
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Evgenia Dmitrieva
- Leibniz Institute for Solid State and Materials Research (IFW) Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
| | - Lili Du
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, China
| | - David Lee Phillips
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Junzhi Liu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, China
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Yamasumi K, Ueda K, Haketa Y, Hattori Y, Suda M, Seki S, Sakai H, Hasobe T, Ikemura R, Imai Y, Ishibashi Y, Asahi T, Nakamura K, Maeda H. Charge-Segregated Stacking Structure with Anisotropic Electric Conductivity in NIR-Absorbing and Emitting Positively Charged π-Electronic Systems. Angew Chem Int Ed Engl 2023; 62:e202216013. [PMID: 36573653 DOI: 10.1002/anie.202216013] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Indexed: 12/28/2022]
Abstract
Squarylium-based π-electronic cation with an augmented dipole was synthesized by methylation of zwitterionic squarylium. The cation formed various ion pairs in combination with anions, and the ion pairs exhibited distinct photophysical properties in the dispersed state, ascribed to the formation of J- and H-aggregates. The ion pairs provided solid-state assemblies based on cation stacking. It is noteworthy that complete segregation of cations and anions was observed in a pseudo-polymorph of the ion pair with pentacyanocyclopentadienide as a π-electronic anion. In the crystalline state, the ion pairs exhibited photophysical properties and electric conductivity derived from cation stacking. In particular, the charge-segregated ion-pairing assembly induces an electric conductive pathway along the stacking axis. The charge-segregated mode and fascinating properties were derived from the reduced electrostatic repulsion between adjacent π-electronic cations via dipole-dipole interactions.
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Affiliation(s)
- Kazuhisa Yamasumi
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Kentaro Ueda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Yohei Haketa
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Yusuke Hattori
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Masayuki Suda
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Hayato Sakai
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, 223-8522, Japan
| | - Taku Hasobe
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, 223-8522, Japan
| | - Ryoya Ikemura
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, Higashi, Osaka, 577-8502, Japan
| | - Yoshitane Imai
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, Higashi, Osaka, 577-8502, Japan
| | - Yukihide Ishibashi
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, Matsuyama, 790-8577, Japan
| | - Tsuyoshi Asahi
- Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University, Matsuyama, 790-8577, Japan
| | - Kazuto Nakamura
- Yokkaichi Research Center, JSR Corporation, Yokkaichi, 510-8552, Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, 525-8577, Japan
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Kawasaki A, Takeda T, Hoshino N, Matsuda W, Seki S, Shimizu GKH, Akutagawa T. Structural Transformable Coulomb Lattice of n-Type Semiconductors for Guest Sorption. ACS APPLIED MATERIALS & INTERFACES 2023; 15:1661-1674. [PMID: 36541074 DOI: 10.1021/acsami.2c17979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In recent years, highly designable organic porous materials have attracted considerable attention in the development of new types of molecular adsorption-desorption materials. The adsorption-desorption process also changes the electronic structure via the existence of guest molecules. Therefore, it is possible to change the physical property during the guest adsorption-desorption cycle using an appropriate chemical design of the host crystal lattice. As the development of n-type organic semiconductors has been limited, we focused on designing an n-type organic semiconductor material to control the host crystal lattice, electronic dimensionality, chemical stability, and high electron mobility using an ionic naphthalenediimide (NDI) derivative. Low symmetrical dianionic bis(benzene-m-sulfonate)-naphthalenediimide (m-BSNDI2-) forms various types of single-crystal (M+)2(m-BSNDI2-)·n(guest) with a combination of M+ = Na+, K+, Rb+, and guest = H2O, CH3OH. Four crystals of (K+)2(m-BSNDI2-)·n(H2O), (K+)2(m-BSNDI2-)·n(CH3OH), α-(K+)2(m-BSNDI2-), and β-(K+)2(m-BSNDI2-) were transformable using the guest adsorption-desorption cycle. Two kinds of single-crystal (K+)2(m-BSNDI2-)·n(CH3OH) with n = 0 and 2.0 showed a single-crystal to single-crystal (SCSC) transformation through CH3OH desorption. On the contrary, five kinds of single crystals with n = 0, 3.0, 3.3, 4.75, and 5.5 were identified in the single-crystal X-ray structural analyses of (K+)2(m-BSNDI2-)·n(H2O). Systematic change of the ionic radii in (M+)2(m-BSNDI2-) modified the crystal lattice flexibility for the guest adsorption-desorption cycles.
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Affiliation(s)
- Ayumi Kawasaki
- Graduate School of Engineering, Tohoku University, Sendai980-8579, Japan
| | - Takashi Takeda
- Graduate School of Engineering, Tohoku University, Sendai980-8579, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai980-8577, Japan
| | - Norihisa Hoshino
- Graduate School of Engineering, Tohoku University, Sendai980-8579, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai980-8577, Japan
| | - Wakana Matsuda
- Graduate School of Engineering, Kyoto University, Kyoto615-8510, Japan
| | - Shu Seki
- Graduate School of Engineering, Kyoto University, Kyoto615-8510, Japan
| | - George K H Shimizu
- Department of Chemistry, University of Calgary, CalgaryT2N1N4, Alberta, Canada
| | - Tomoyuki Akutagawa
- Graduate School of Engineering, Tohoku University, Sendai980-8579, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai980-8577, Japan
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Kim B, Lee J, Chen YP, Wu XQ, Kang J, Jeong H, Bae SE, Li JR, Sung J, Park J. π-Stacks of radical-anionic naphthalenediimides in a metal-organic framework. SCIENCE ADVANCES 2022; 8:eade1383. [PMID: 36563156 PMCID: PMC9788762 DOI: 10.1126/sciadv.ade1383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Radical-ionic metal-organic frameworks (MOFs) have unique optical, magnetic, and electronic properties. These radical ions, forcibly formed by external stimulus-induced redox processes, are structurally unstable and have short radical lifetimes. Here, we report two naphthalenediimide-based (NDI-based) Ca-MOFs: DGIST-6 and DGIST-7. Neutral DGIST-6, which is generated first during solvothermal synthesis, decomposes and is converted into radical-anionic DGIST-7. Cofacial (NDI)2•- and (NDI)22- dimers are effectively stabilized in DGIST-7 by electron delocalization and spin-pairing as well as dimethylammonium counter cations in their pores. Single-crystal x-ray diffractometry was used to visualize redox-associated structural transformations, such as changes in centroid-to-centroid distance. Moreover, the unusual rapid reduction of oxidized DGIST-7 into the radical anion upon infrared irradiation results in effective and reproducible photothermal conversion. This study successfully illustrated the strategic use of in situ prepared cofacial ligand dimers in MOFs that facilitate the stabilization of radical ions.
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Affiliation(s)
- Bongkyeom Kim
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Dalseong-gun, Daegu 42988, Republic of Korea
| | - Juhyung Lee
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Dalseong-gun, Daegu 42988, Republic of Korea
| | - Ying-Pin Chen
- NSF’s ChemMatCARs, The University of Chicago Argonne, Chicago, IL 60439, USA
| | - Xue-Qian Wu
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P.R. China
| | - Joongoo Kang
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Dalseong-gun, Daegu 42988, Republic of Korea
| | - Hwakyeung Jeong
- Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
| | - Sang-Eun Bae
- Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
| | - Jian-Rong Li
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, P.R. China
| | - Jooyoung Sung
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Dalseong-gun, Daegu 42988, Republic of Korea
| | - Jinhee Park
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333 Techno Jungang-daero, Dalseong-gun, Daegu 42988, Republic of Korea
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Cui M, Murase R, Shen Y, Sato T, Koyama S, Uchida K, Tanabe T, Takaishi S, Yamashita M, Iguchi H. An electrically conductive metallocycle: densely packed molecular hexagons with π-stacked radicals. Chem Sci 2022; 13:4902-4908. [PMID: 35655871 PMCID: PMC9067574 DOI: 10.1039/d2sc00447j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 03/23/2022] [Indexed: 11/25/2022] Open
Abstract
Electrical conduction among metallocycles has been unexplored because of the difficulty in creating electronic transport pathways. In this work, we present an electrocrystallization strategy for synthesizing an intrinsically electron-conductive metallocycle, [Ni6(NDI-Hpz)6(dma)12(NO3)6]·5DMA·nH2O (PMC-hexagon) (NDI-Hpz = N,N'-di(1H-pyrazol-4-yl)-1,4,5,8-naphthalenetetracarboxdiimide). The hexagonal metallocycle units are assembled into a densely packed ABCABC… sequence (like the fcc geometry) to construct one-dimensional (1D) helical π-stacked columns and 1D pore channels, which were maintained under the liberation of H2O molecules. The NDI cores were partially reduced to form radicals as charge carriers, resulting in a room-temperature conductivity of (1.2-2.1) × 10-4 S cm-1 (pressed pellet), which is superior to that of most NDI-based conductors including metal-organic frameworks and organic crystals. These findings open up the use of metallocycles as building blocks for fabricating conductive porous molecular materials.
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Affiliation(s)
- Mengxing Cui
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aza-Aoba, Aramaki Sendai 980-8578 Japan
| | - Ryuichi Murase
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aza-Aoba, Aramaki Sendai 980-8578 Japan
| | - Yongbing Shen
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aza-Aoba, Aramaki Sendai 980-8578 Japan
| | - Tetsu Sato
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aza-Aoba, Aramaki Sendai 980-8578 Japan
| | - Shohei Koyama
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aza-Aoba, Aramaki Sendai 980-8578 Japan
| | - Kaiji Uchida
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aza-Aoba, Aramaki Sendai 980-8578 Japan
| | - Tappei Tanabe
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aza-Aoba, Aramaki Sendai 980-8578 Japan
| | - Shinya Takaishi
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aza-Aoba, Aramaki Sendai 980-8578 Japan
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aza-Aoba, Aramaki Sendai 980-8578 Japan
- School of Materials Science and Engineering, Nankai University Tianjin 300350 P. R. China
| | - Hiroaki Iguchi
- Department of Chemistry, Graduate School of Science, Tohoku University 6-3 Aza-Aoba, Aramaki Sendai 980-8578 Japan
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Akutagawa T, Takeda T, Hoshino N. Dynamics of proton, ion, molecule, and crystal lattice in functional molecular assemblies. Chem Commun (Camb) 2021; 57:8378-8401. [PMID: 34369489 DOI: 10.1039/d1cc01586a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dynamic molecular processes, such as short- or long-range proton (H+) and ion (M+) motions, and molecular rotations in electrical conducting and magnetic molecular assemblies enable the fabrication of electron-H+ (or M+) coupling systems, while crystal lattice dynamics and molecular conformation changes in hydrogen-bonded molecular crystals have been utilised in external stimuli responsive reversible gas-induced gate opening and molecular adsorption/desorption behavior. These dynamics of the polar structural units are responsible for the dielectric measurements. The H+ dynamics are formed from ferroelectrics and H+ conductors, while the dynamic M+ motions of Li+ and Na+ involve ionic conductors and coupling to the conduction electrons. In n-type organic semiconductors, the crystal lattices are modulated by replacing M+ cations, with cations such as Li+, Na+, K+, Rb+, and Cs+. The use of polar rotator or inversion structures such as alkyl amides, m-fluoroanilinium cations, and bowl-shaped trithiasumanene π-cores enables the formation of ferroelectric molecular assemblies. The host-guest molecular systems of ESIPT fluorescent chromic molecules showed interesting molecular sensing properties using various bases, where the dynamic transformation of the crystal lattice and the molecular conformational change were coupled to each other.
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Affiliation(s)
- Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
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Tanabe T, Sato T, Fuku K, Uchida K, Yamauchi T, Takaishi S, Iguchi H. Bluish Hydrochromic Naphthalenediimide Salt: Change of Hydrogen-bond Interactions as the New Mechanism of Vapochromism. CHEM LETT 2021. [DOI: 10.1246/cl.210275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tappei Tanabe
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Tetsu Sato
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Kentaro Fuku
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Kaiji Uchida
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Tamon Yamauchi
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Shinya Takaishi
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Hiroaki Iguchi
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
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