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Hayasaka R, Sakai H, Fuki M, Okamoto T, Khan R, Higashi M, Tkachenko NV, Kobori Y, Hasobe T. The Effect of Torsional Motion on Multiexciton Formation through Intramolecular Singlet Fission in Ferrocene-Bridged Pentacene Dimers. Angew Chem Int Ed Engl 2024; 63:e202315747. [PMID: 38179830 DOI: 10.1002/anie.202315747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/30/2023] [Accepted: 01/04/2024] [Indexed: 01/06/2024]
Abstract
A series of ferrocene(Fc)-bridged pentacene(Pc)-dimers [Fc-Ph(2,n)-(Pc)2 : n=number of phenylene spacers] were synthesized to examine the tortional motion effect of Fc-terminated phenylene linkers on strongly coupled quintet multiexciton (5 TT) formation through intramolecular singlet fission (ISF). Fc-Ph(2,4)-(Pc)2 has a relatively small electronic coupling and large conformational flexibility according to spectroscopic and theoretical analyses. Fc-Ph(2,4)-(Pc)2 exhibits a high-yield 5 TT together with quantitative singlet TT (1 TT) generation through ISF. This demonstrates a much more efficient ISF than those of other less flexible Pc dimers. The activation entropy in 1 TT spin conversion of Fc-Ph(2,4)-(Pc)2 is larger than those of the other systems due to the larger conformational flexibility associated with the torsional motion of the linkers. The torsional motion of linkers in 1 TT is attributable to weakened metal-ligand bonding in the Fc due to hybridization of the hole level of Pc to Fc in 1 TT unpaired orbitals.
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Affiliation(s)
- Ryo Hayasaka
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Kanagawa 223-8522, Japan
| | - Hayato Sakai
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Kanagawa 223-8522, Japan
| | - Masaaki Fuki
- Molecular Photoscience Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1, Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- CREST, JST, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan
| | - Tsubasa Okamoto
- Molecular Photoscience Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1, Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- CREST, JST, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan
| | - Ramsha Khan
- Chemistry and Advanced Materials Group, Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33720, Tampere, Finland
| | - Masahiro Higashi
- Department of Complex Systems Science, Graduate School of Informatics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Nikolai V Tkachenko
- Chemistry and Advanced Materials Group, Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33720, Tampere, Finland
| | - Yasuhiro Kobori
- Molecular Photoscience Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1, Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
- CREST, JST, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan
| | - Taku Hasobe
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Kanagawa 223-8522, Japan
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Wang L, Gao T, Yan J, Hong Y, Ma Y, Jin R, Kang C, Gao L. Enantiomer Recognition Based on Chirality Transfer from Chiral Amines to Ternary Dynamic Covalent Systems. J Org Chem 2024; 89:1797-1806. [PMID: 38197600 DOI: 10.1021/acs.joc.3c02475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Enantiomer recognition is usually required in organic synthesis and materials and life sciences. This paper describes an enantiomer recognition method based on ternary dynamic covalent systems constructed via the complexation of chiral amines with a chiral boronate derived from 1,4-phenylenediboric acid and an L-DOPA-modified naphthalenediimide. The ternary systems aggregate into chiral assemblies driven by π-π interactions, and the chirality is transferred from the chiral amines to assemblies with high stereospecificity. Consequently, the enantiomer composition of chiral amines and the absolute configuration of the major enantiomer can be determined according to the sign of the Cotton effect of the ternary system by using circular dichroism (CD) spectroscopy. This method offers the advantage of using the long wavelength CD signals of the boronate at around 520 nm, thereby avoiding interference with those of the carbon skeleton. This ternary system provides a novel approach to the design of enantiomer recognition systems.
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Affiliation(s)
- Liangpeng Wang
- Center for Innovative Drug Discovery, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Tingting Gao
- Center for Innovative Drug Discovery, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Jijun Yan
- Center for Innovative Drug Discovery, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Yun Hong
- Center for Innovative Drug Discovery, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Yiming Ma
- Center for Innovative Drug Discovery, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Rizhe Jin
- Center for Innovative Drug Discovery, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Chuanqing Kang
- Center for Innovative Drug Discovery, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Lianxun Gao
- Center for Innovative Drug Discovery, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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3
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Guchhait C, Suriyaa V, Sahu N, Sarkar SD, Adhikari B. Ferrocene: an exotic building block for supramolecular assemblies. Chem Commun (Camb) 2023; 59:14482-14496. [PMID: 37997157 DOI: 10.1039/d3cc03659f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
Ferrocene (Fc), a classical organometallic complex, has found potential applications in ligand design, catalysis, and analytical, biological, medicinal and materials chemistry. In recent years, the use of Fc as a building block in supramolecular chemistry has emerged. The molecular shape, size, and hydrophobicity of Fc make it an ideal guest for a variety of macrocyclic host molecules to form stable host-guest complexes. The vertical distance (3.3 Å) between two cyclopentadienyl rings and molecular "ball bearing" property in Fc support the formation of intramolecular π-π stacking, H-bonding and metallophilic interactions between two appropriate substituents in 1,n'-disubstituted ferrocenes. Along with these molecular features, the rigidity along with rotational flexibility, redox reversibility and oxidation-triggered tunable hydrophobicity of Fc have led to its use as an exotic building block for the development of a wide range of supramolecular assemblies such as smart molecular receptors, intricate metal-organic assemblies, supramolecular polymers, and gels including out-of-equilibrium assemblies and metal nanoparticle assemblies. This review highlights the concepts behind the design and development of these assemblies, where the Fc unit has a direct and defined role in their formation and function. The use of Fc in supramolecular assembly is still a relatively young field and set to be the subject of increasing research interest towards the development of fascinating supramolecular structures with tailored properties and programmable functions towards applications in materials and biological sciences.
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Affiliation(s)
- Chandrakanta Guchhait
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India.
| | - Vembanan Suriyaa
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India.
| | - Nihar Sahu
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India.
| | - Sovik Dey Sarkar
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India.
| | - Bimalendu Adhikari
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India.
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Umer Lone M, Sahu N, Kumar Roy R, Adhikari B. Introduction of Ferrocene as a Facilitator for the Construction of Supramolecular Polymers. Chemistry 2023; 29:e202202711. [PMID: 36178321 DOI: 10.1002/chem.202202711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Indexed: 01/04/2023]
Abstract
Proper monomer design is the key to enhancing the strength of noncovalent interactions between the molecules toward the efficient formation of supramolecular polymers (SPs). We have designed and synthesized 1,n'-disubstituted ferrocene-azobenzene-long alkyl chains, Fc(CONH-Azo-TDP)2 , to afford SPs with a high probability. The design exploits the ''molecular ball-bearing'' property of the ferrocene core, which allows two azobenzene arms to rotate in the planes of cyclopentadienyl rings, generating the most suitable molecular conformation required for SP formation. This ferrocene monomer formed a supergel consisting of SPs supported by strong intermolecular (H-bonding and π-π stacking) interactions and higher enthalpy gain than the reference molecules, where the central ferrocene core was replaced by flexible aliphatic as well as rigid benzene linkers. The molecular conformation involved in SPs, the strength of noncovalent interactions, and the process of supramolecular polymerization were investigated through NMR, UV-Vis, XRD and TEM studies. The results demonstrate that ferrocene may act as a good modulator for constructing efficient SPs.
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Affiliation(s)
- Mohammad Umer Lone
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, Manauli PO, 140306, S. A. S. Nagar, Punjab, India
| | - Nihar Sahu
- Department of Chemistry, National Institute of Technology Rourkela, 769008, Rourkela, Odisha, India
| | - Raj Kumar Roy
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, Manauli PO, 140306, S. A. S. Nagar, Punjab, India
| | - Bimalendu Adhikari
- Department of Chemistry, National Institute of Technology Rourkela, 769008, Rourkela, Odisha, India
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5
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Visualizing molecular weights differences in supramolecular polymers. Proc Natl Acad Sci U S A 2022; 119:2121746119. [PMID: 35197296 PMCID: PMC8892509 DOI: 10.1073/pnas.2121746119] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/12/2022] [Indexed: 11/29/2022] Open
Abstract
Molecular weight determinations play a vital role in the characterization of supramolecular polymers. They are essential to assessing the degree of polymerization, which in turn can have a significant impact on the properties of the polymer. While numerous characterization methods have been developed to estimate the number-average molecular weight (Mn) of supramolecular polymers, a simple visual method could provide advantages in terms of ease of use. We have now developed a system wherein differences in the fluorescent signature, including changes in color, allow variations in the Mn of an anion-responsive supramolecular polymer [M1·Zn(OTf)2]n to be readily monitored. The present visual differentiation strategy provides a tool that may be used to characterize supramolecular polymers. Issues of molecular weight determination have been central to the development of supramolecular polymer chemistry. Whereas relationships between concentration and optical features are established for well-behaved absorptive and emissive species, for most supramolecular polymeric systems no simple correlation exists between optical performance and number-average molecular weight (Mn). As such, the Mn of supramolecular polymers have to be inferred from various measurements. Herein, we report an anion-responsive supramolecular polymer [M1·Zn(OTf)2]n that exhibits monotonic changes in the fluorescence color as a function of Mn. Based on theoretical estimates, the calculated average degree of polymerization (DPcal) increases from 16.9 to 84.5 as the monomer concentration increases from 0.08 mM to 2.00 mM. Meanwhile, the fluorescent colors of M1 + Zn(OTf)2 solutions were found to pass from green to yellow and to orange, corresponding to a red shift in the maximum emission band (λmax). Therefore, a relationship between DPcal and λmax could be established. Additionally, the anion-responsive nature of the present system meant that the extent of supramolecular polymerization could be regulated by introducing anions, with the resulting change in Mn being readily monitored via changes in the fluorescent emission features.
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6
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Guthardt R, Blanckenberg J, Bruhn C, Siemeling U. Planar-chiral 1,1'-diaminoferrocenes. Chem Commun (Camb) 2021; 57:12984-12987. [PMID: 34792053 DOI: 10.1039/d1cc05287j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Planar-chiral homologues of 1,1'-diaminoferrocene, which bear a single additional substituent adjacent to one of the amino groups, are prepared as racemic mixtures in a few steps and in good yields from ferrocene. Various substituents relevant to steric shielding, coordination and further functionalisation are used, giving access to ferrocene-based planar-chiral diimines and diamines as well as stable N-heterocyclic carbenes and tetrylenes by transformations analogous to procedures established for 1,1'-diaminoferrocene.
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Affiliation(s)
- Robin Guthardt
- Institut für Chemie, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany.
| | - Johannes Blanckenberg
- Institut für Chemie, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany.
| | - Clemens Bruhn
- Institut für Chemie, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany.
| | - Ulrich Siemeling
- Institut für Chemie, Universität Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany.
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7
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Ono T, Kimura K, Ihara M, Yamanaka Y, Sasaki M, Mori H, Hisaeda Y. Room-Temperature Phosphorescence Emitters Exhibiting Red to Near-Infrared Emission Derived from Intermolecular Charge-Transfer Triplet States of Naphthalenediimide-Halobenzoate Triad Molecules. Chemistry 2021; 27:9535-9541. [PMID: 33780081 DOI: 10.1002/chem.202100906] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Indexed: 11/06/2022]
Abstract
Room-temperature phosphorescence (RTP) emitters have attracted significant attention. However, purely organic RTP emitters in red to near-infrared region have not been properly investigated. In this study, a series of naphthalenediimide-halobenzoate-linked molecules are synthesized, one of which exhibits efficient RTP properties, showing red to near-infrared emission in solid and aqueous dispersion. Spectroscopic studies and single-crystal X-ray diffraction analysis have shown that the difference in the stacking modes of compounds affects the optical properties, and the formation of intermolecular charge-transfer complexes of naphthalenediimide-halobenzoate moiety results in a bathochromic shift of absorption and RTP properties. The time-dependent density functional theory calculations showed that the formation of charge-transfer triplet states and the external heavy atom effect of the halogen atom enhance the intersystem crossing between excited singlet and triplet states.
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Affiliation(s)
- Toshikazu Ono
- Department of Chemistry and Biochemistry, Graduate School of Engineering Center for Molecular Systems (CMS), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Kazuki Kimura
- Department of Chemistry and Biochemistry, Graduate School of Engineering Center for Molecular Systems (CMS), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Megumi Ihara
- Department of Chemistry and Biochemistry, Graduate School of Engineering Center for Molecular Systems (CMS), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Yuri Yamanaka
- Department of Chemistry and Biochemistry, Graduate School of Engineering Center for Molecular Systems (CMS), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Miori Sasaki
- Department of Chemistry and Biochemistry, Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Hirotoshi Mori
- Department of Applied Chemistry, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan.,Department of Theoretical and Computational Molecular Science, Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, 444-8787, Japan
| | - Yoshio Hisaeda
- Department of Chemistry and Biochemistry, Graduate School of Engineering Center for Molecular Systems (CMS), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
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8
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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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Keshri SK, Ishizuka T, Kojima T, Matsushita Y, Takeuchi M. Long-Range Order in Supramolecular π Assemblies in Discrete Multidecker Naphthalenediimides. J Am Chem Soc 2021; 143:3238-3244. [PMID: 33600719 DOI: 10.1021/jacs.0c13389] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report herein the solution and solid-state studies of conformationally flexible multidecker naphthalenediimides (NDIs) in which the chromophoric NDI units intramolecularly assemble into a series of discrete π-stacks. The X-ray crystallography reveals the existence of exclusively all-syn NDIs orientations in lower congeners while all-anti in a higher congener, suggesting short- to long-range π···π interactions throughout the slipped πNDI chromophoric array. The UV/vis and fluorescence spectra evaluate the discrete π-stacks by remarkable optical changes upon cooling in solution. Furthermore, we carried out a systematic electrochemical investigation to gain an insight into redox properties of the long-range π-stacked structures. The higher congener (5NDI) shows a ten-electron reversible reduction process in a small working potential window (∼0.8 V). To our knowledge, this is an unusual observation in an organic molecular system to undergo up to ten-electron reduction. These results pave the way to design multidecker π-stacks in which structural control with specific electronic properties would be engineered.
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Affiliation(s)
- Sudhir Kumar Keshri
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | - Tomoya Ishizuka
- Department of Chemistry, Faculty of Pure & Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8477, Japan
| | - Takahiko Kojima
- Department of Chemistry, Faculty of Pure & Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8477, Japan
| | - Yoshitaka Matsushita
- Materials Analysis Station, Research Network and Facility Services Division, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | - Masayuki Takeuchi
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan
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10
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Sha Y, Zhang H, Zhou Z, Luo Z. Stress-responsive properties of metallocenes in metallopolymers. Polym Chem 2021. [DOI: 10.1039/d1py00311a] [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
This review article combines the field of metallopolymers and stress-responsiveness on a molecular level, namely, metallocenes, as emerging stress-responsive building blocks for materials.
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Affiliation(s)
- Ye Sha
- College of Science
- Nanjing Forestry University
- Nanjing
- PR China
| | - Hao Zhang
- College of Science
- Nanjing Forestry University
- Nanjing
- PR China
| | - Zhou Zhou
- College of Science
- Nanjing Forestry University
- Nanjing
- PR China
| | - Zhenyang Luo
- College of Science
- Nanjing Forestry University
- Nanjing
- PR China
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11
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Keshri SK, Nakanishi W, Takai A, Ishizuka T, Kojima T, Takeuchi M. Discrete π Stack of a Tweezer-Shaped Naphthalenediimide-Anthracene Conjugate. Chemistry 2020; 26:13288-13294. [PMID: 32583576 DOI: 10.1002/chem.202002477] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Indexed: 12/22/2022]
Abstract
The design and synthesis of a tweezer-shaped naphthalenediimide (NDI)-anthracene conjugate (2NDI) are reported. In the structure of the closed form (πNDI ⋅⋅⋅πNDI stack) of 2NDI, which was elucidated by single-crystal XRD, the existence of C-H⋅⋅⋅O hydrogen bonding involving the nearest carbonyl oxygen atom of an NDI unit was suggested. The tunability of πNDI ⋅⋅⋅πNDI interactions was studied by means of UV/Vis absorption, fluorescence and NMR spectroscopy and molecular modelling. This revealed that the πNDI ⋅⋅⋅πNDI interactions in 2NDI affect the absorption and emission properties depending on the temperature. Furthermore, in polar solvents, 2NDI prefers the stronger πNDI ⋅⋅⋅πNDI stack, whereas the πNDI ⋅⋅⋅πNDI interaction is diminished in nonpolar solvents. Importantly, the conformational variations of 2NDI can be reversibly switched by variation in temperature, and this suggests potential application for fluorogenic molecular switches upon temperature changes.
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Affiliation(s)
- Sudhir Kumar Keshri
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Waka Nakanishi
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Atsuro Takai
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Tomoya Ishizuka
- Department of Chemistry, Faculty of Pure & Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Takahiko Kojima
- Department of Chemistry, Faculty of Pure & Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Masayuki Takeuchi
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
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12
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Keshri SK, Takai A, Ishizuka T, Kojima T, Takeuchi M. Conformational Dynamics of Monomer- versus Dimer-like Features in a Naphthalenediimide-Based Conjugated Cyclophane. Angew Chem Int Ed Engl 2020; 59:5254-5258. [PMID: 31854072 DOI: 10.1002/anie.201914414] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Indexed: 11/07/2022]
Abstract
The design and synthesis of an enantiomeric pair of 1,8-diethynylanthracene-bridged naphthalenediimide (NDI)-based cyclophanes (Cyclo-NDIs) are reported. Each enantiomer of Cyclo-NDI exhibits a circularly polarized luminescence signal with a relatively large luminescence dissymmetry factor (glum =±8×10-3 ). We have further investigated the modulation of through-space electronic communication between co-facially oriented NDIs in a discrete Cyclo-NDI with changes in the temperature. Tuning of the electronic communication results from the conformational transformation of monomer- versus dimer-like features of Cyclo-NDI, as confirmed by UV/Vis, fluorescence, circular dichroic, and NMR spectroscopic analysis. The temperature-dependent optical response in the Cyclo-NDI through the conformational transformation could be utilized as a highly sensitive and reversible optical thermometer in a wide temperature range (100 to -80 °C).
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Affiliation(s)
- Sudhir Kumar Keshri
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Atsuro Takai
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Tomoya Ishizuka
- Department of Chemistry, Graduate School of Pure & Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Takahiko Kojima
- Department of Chemistry, Graduate School of Pure & Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
| | - Masayuki Takeuchi
- Molecular Design and Function Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
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13
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Keshri SK, Takai A, Ishizuka T, Kojima T, Takeuchi M. Conformational Dynamics of Monomer‐ versus Dimer‐like Features in a Naphthalenediimide‐Based Conjugated Cyclophane. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914414] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Sudhir Kumar Keshri
- Molecular Design and Function GroupNational Institute for Materials Science (NIMS) 1-2-1 Sengen Tsukuba 305-0047 Japan
| | - Atsuro Takai
- Molecular Design and Function GroupNational Institute for Materials Science (NIMS) 1-2-1 Sengen Tsukuba 305-0047 Japan
| | - Tomoya Ishizuka
- Department of ChemistryGraduate School of Pure & Applied SciencesUniversity of Tsukuba 1-1-1 Tennodai Tsukuba 305-8571 Japan
| | - Takahiko Kojima
- Department of ChemistryGraduate School of Pure & Applied SciencesUniversity of Tsukuba 1-1-1 Tennodai Tsukuba 305-8571 Japan
| | - Masayuki Takeuchi
- Molecular Design and Function GroupNational Institute for Materials Science (NIMS) 1-2-1 Sengen Tsukuba 305-0047 Japan
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14
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Tsujimoto Y, Sakurai T, Ono Y, Nagano S, Seki S. Cold Crystallization of Ferrocene-Hinged π-Conjugated Molecule Induced by the Limited Conformational Freedom of Ferrocene. J Phys Chem B 2019; 123:8325-8332. [PMID: 31498994 DOI: 10.1021/acs.jpcb.9b06880] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yuki Tsujimoto
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Tsuneaki Sakurai
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yuichiro Ono
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Shusaku Nagano
- Nagoya University Venture Business Laboratory, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
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15
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Chen C, Wu Y, Li H. Fine-Tuning Aromatic Stacking and Single-Crystal Photoluminescence Through Coordination Chemistry. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801843] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Chaoyuan Chen
- Key Laboratory of Cluster Science of Ministry of Education; School of Chemistry and Chemical Engineering; Beijing Institute of Technology; 100081 Beijing P. R. China
| | - Yilei Wu
- Department of Chemical Engineering; Stanford University; 443 Via Ortega 94305-4125 Stanford CA United States
| | - Hui Li
- Key Laboratory of Cluster Science of Ministry of Education; School of Chemistry and Chemical Engineering; Beijing Institute of Technology; 100081 Beijing P. R. China
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16
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Park M, Kang DG, Choi YJ, Yoon WJ, Koo J, Park SH, Ahn S, Jeong KU. Kinetically Controlled Polymorphic Superstructures of Pyrene-Based Asymmetric Liquid Crystal Dendron: Relationship Between Hierarchical Superstructures and Photophysical Properties. Chemistry 2018; 24:9015-9021. [DOI: 10.1002/chem.201801284] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 04/17/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Minwook Park
- BK21 Plus Haptic Polymer Composite Research Team; Department of Polymer-Nano Science and Technology; Chonbuk National University; Jeonju Jeonbuk 54896 Korea
| | - Dong-Gue Kang
- BK21 Plus Haptic Polymer Composite Research Team; Department of Polymer-Nano Science and Technology; Chonbuk National University; Jeonju Jeonbuk 54896 Korea
| | - Yu-Jin Choi
- BK21 Plus Haptic Polymer Composite Research Team; Department of Polymer-Nano Science and Technology; Chonbuk National University; Jeonju Jeonbuk 54896 Korea
| | - Won-Jin Yoon
- BK21 Plus Haptic Polymer Composite Research Team; Department of Polymer-Nano Science and Technology; Chonbuk National University; Jeonju Jeonbuk 54896 Korea
| | - Jahyeon Koo
- BK21 Plus Haptic Polymer Composite Research Team; Department of Polymer-Nano Science and Technology; Chonbuk National University; Jeonju Jeonbuk 54896 Korea
| | - Seo-Hee Park
- BK21 Plus Haptic Polymer Composite Research Team; Department of Polymer-Nano Science and Technology; Chonbuk National University; Jeonju Jeonbuk 54896 Korea
| | - Seokhoon Ahn
- Institute of Advanced Composite Materials; Korea Institute of Science and Technology; Jeonbuk 565-905 Korea
| | - Kwang-Un Jeong
- BK21 Plus Haptic Polymer Composite Research Team; Department of Polymer-Nano Science and Technology; Chonbuk National University; Jeonju Jeonbuk 54896 Korea
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17
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Nagura K, Inoue R, Takai A, Sugiyasu K, Takeuchi M. “π-Figuration” for Controlling Stacking of π-Conjugated Molecules and Polymers. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | - Atsuro Takai
- Molecular Design & Function Group, National Institute for Materials Science
| | - Kazunori Sugiyasu
- Molecular Design & Function Group, National Institute for Materials Science
| | - Masayuki Takeuchi
- Molecular Design & Function Group, National Institute for Materials Science
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18
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Xing P, Tham HP, Li P, Chen H, Xiang H, Zhao Y. Environment-Adaptive Coassembly/Self-Sorting and Stimulus-Responsiveness Transfer Based on Cholesterol Building Blocks. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1700552. [PMID: 29375976 PMCID: PMC5770671 DOI: 10.1002/advs.201700552] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 09/20/2017] [Indexed: 05/20/2023]
Abstract
Manipulating the property transfer in nanosystems is a challenging task since it requires switchable molecular packing such as separate aggregation (self-sorting) or synergistic aggregation (coassembly). Herein, a unique manipulation of self-sorting/coassembly aggregation and the observation of switchable stimulus-responsiveness transfer in a two component self-assembly system are reported. Two building blocks bearing the same cholesterol group give versatile topological structures in polar and nonpolar solvents. One building block (cholesterol conjugated cynanostilbene, CCS) consists of cholesterol conjugated with a cynanostilbene unit, and the other one (C10CN) is comprised of cholesterol connected with a naphthalimide group having a flexible long alkyl chain. Their assemblies including gel, crystalline plates, and vesicles are obtained. In gel and crystalline plate phases, the self-sorting behavior dominates, while synergistic coassembly occurs in vesicle phase. Since CCS having the cyanostilbene group can respond to the light irradiation, it undergoes light-induced chiral amplification. C10CN is thermally responsive, whereby its supramolecular chirality is inversed upon heating. In coassembled vesicles, it is interestingly observed that their responsiveness can be transferred by each other, i.e., the C10CN segment is sensitive to the light irradiation, while CCS is thermoresponsive. This unprecedented behavior of the property transfer may shine a light to the precise fabrication of smart materials.
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Affiliation(s)
- Pengyao Xing
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University21 Nanyang Link637371SingaporeSingapore
| | - Huijun Phoebe Tham
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University21 Nanyang Link637371SingaporeSingapore
| | - Peizhou Li
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University21 Nanyang Link637371SingaporeSingapore
| | - Hongzhong Chen
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University21 Nanyang Link637371SingaporeSingapore
| | - Huijing Xiang
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University21 Nanyang Link637371SingaporeSingapore
| | - Yanli Zhao
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University21 Nanyang Link637371SingaporeSingapore
- School of Materials Science and EngineeringNanyang Technological University50 Nanyang Avenue639798SingaporeSingapore
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19
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Sivaev IB. Ferrocene and Transition Metal Bis(Dicarbollides) as Platform for Design of Rotatory Molecular Switches. Molecules 2017; 22:molecules22122201. [PMID: 29232924 PMCID: PMC6149777 DOI: 10.3390/molecules22122201] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 11/27/2017] [Accepted: 12/01/2017] [Indexed: 11/16/2022] Open
Abstract
Design of rotatory molecular switches based on extremely stable sandwich organometallic complexes ferrocene and bis(dicarbollide) complexes of transition metals is reviewed. The "on"-"off" switching in these systems can be controlled by various external stimuli such as change of the solution pH, interactions with coordinating species or redox reactions involving the central atom or substituents in the ligands.
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Affiliation(s)
- Igor B Sivaev
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., Moscow 119991, Russia.
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20
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Scottwell SØ, Barnsley JE, McAdam CJ, Gordon KC, Crowley JD. A ferrocene based switchable molecular folding ruler. Chem Commun (Camb) 2017. [DOI: 10.1039/c7cc03358c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A bis(ferrocene) three tiered molecular folding ruler can be induced to undergo a large scale extension and contraction process using either chemical or better electrochemical methods.
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Affiliation(s)
| | - Jonathan E. Barnsley
- Department of Chemistry
- University of Otago
- Dunedin
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
| | - C. John McAdam
- Department of Chemistry
- University of Otago
- Dunedin
- New Zealand
| | - Keith C. Gordon
- Department of Chemistry
- University of Otago
- Dunedin
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
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