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Iwai T, Abe S, Takizawa SY, Masai H, Terao J. Insulated π-conjugated 2,2'-bipyridine transition-metal complexes: enhanced photoproperties in luminescence and catalysis. Chem Sci 2024; 15:8873-8879. [PMID: 38873064 PMCID: PMC11168077 DOI: 10.1039/d4sc01046a] [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: 02/14/2024] [Accepted: 05/03/2024] [Indexed: 06/15/2024] Open
Abstract
2,2'-Bipyridine has been identified as a privileged ligand scaffold for photofunctional transition metal complexes. We herein report on the synthesis and photoproperties of an insulated π-conjugated 2,2'-bipyridine with a linked rotaxane structure consisting of permethylated α-cyclodextrin (PM α-CD) and oligo(p-phenylene ethynylene). The insulated π-conjugated 2,2'-bipyridine exhibited enhanced ligand performance in the solid-state emitting biscyclometalated Ir complexes and visible-light-driven Ni catalysts owing to π-extension and remote steric effects based on the linked rotaxane structure.
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Affiliation(s)
- Tomohiro Iwai
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo 3-8-1, Komaba, Meguro-ku Tokyo 153-8902 Japan
| | - Shinsuke Abe
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo 3-8-1, Komaba, Meguro-ku Tokyo 153-8902 Japan
| | - Shin-Ya Takizawa
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo 3-8-1, Komaba, Meguro-ku Tokyo 153-8902 Japan
| | - Hiroshi Masai
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo 3-8-1, Komaba, Meguro-ku Tokyo 153-8902 Japan
- PRESTO, Japan Science and Technology Agency 4-1-8 Honcho 332-0012 Kawaguchi Saitama Japan
| | - Jun Terao
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo 3-8-1, Komaba, Meguro-ku Tokyo 153-8902 Japan
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2
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Russell GM, Masai H, Terao J. Insulation of a coumarin derivative with [1]rotaxane to control solvation-induced effects in excited-state dynamics for enhanced luminescence. Phys Chem Chem Phys 2022; 24:15195-15200. [PMID: 35703560 DOI: 10.1039/d2cp02221d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A coumarin derivative bearing a [1]rotaxane structure with permethylated α-cyclodextrins suppressed unwanted solvation-induced effects and increased luminescent quantum yields in medium- and high-polarity solvents. The non-radiative decay was suppressed by the twist in the π-conjugated system and the radiative decay was enhanced by the suppression of the polarity-induced structural changes.
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Affiliation(s)
- Go M Russell
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan.
| | - Hiroshi Masai
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan. .,PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Jun Terao
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan.
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3
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Gao B, Wang G, Li B, Wu L. Self-Inclusion and Dissociation of a Bridging β-Cyclodextrin Triplet. ACS OMEGA 2020; 5:8127-8136. [PMID: 32309722 PMCID: PMC7161068 DOI: 10.1021/acsomega.0c00363] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 03/13/2020] [Indexed: 06/11/2023]
Abstract
To understand the self-inclusion and the dissociation in a branched β-cyclodextrin (CD) system, we designed and synthesized a β-CD trimer in which each CD group is connected to one of bridging arms of a planar triphenylbenzene core through a CuAAC click reaction. Only one rather than two or all of the three host CDs was demonstrated to be in a self-including state in water, while no self-inclusion was observed to occur in dimethylsulfoxide (DMSO) via the characterization of 1H and NOESY NMR spectra. The configuration structures of the CD groups in the self-included state were evaluated, and the dissociation to free state in water was investigated under various conditions like heating, increased acidity, and discharging versus the addition of competitive guests. While raised temperature and increased acidity did not break the self-inclusion, two adamantane guest molecules were found to show capability in driving the equilibrium to get back to free state against the self-inclusion. The inclusion process of the added guests was believed to involve in the dissociation of the self-inclusion and the occupation of the guests in CD cavity. The results of host-guest interaction study indicated that the stable combination of guests was favorable for blocking the structural overturning of glucose toward trapping the bridging group into the cavity.
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Mavridis IM, Yannakopoulou K. Porphyrinoid-Cyclodextrin Assemblies in Biomedical Research: An Update. J Med Chem 2019; 63:3391-3424. [PMID: 31808344 DOI: 10.1021/acs.jmedchem.9b01069] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Porphyrinoids, well-known cofactors in fundamental processes of life, have stimulated interest as synthetic models of natural systems and integral components of photodynamic therapy, but their utilization is compromised by self-aggregation in aqueous media. The capacity of cyclodextrins to include hydrophobic molecules in their cavity provides porphyrinoids with a protective environment against oxidation and the ability to disperse efficiently in biological fluids. Moreover, engineered cyclodextrin-porphyrinoid assemblies enhance the photodynamic abilities of porphyrinoids, can carry chemotherapeutics for synergistic modalities, and can be enriched with functions including cell recognition, tissue penetration, and imaging. This Perspective includes synthetic porphyrinoid-cyclodextrin models of proteins participating in fundamental processes, such as enzymatic catalysis, respiration, and electron transfer. In addition, since porphyrinoid-cyclodextrin systems comprise third generation photosensitizers, recent developments for their utilization in photomedicine, that is, multimodal therapy for cancer (e.g., PDT, PTT) and antimicrobial treatment, and eventually in biocompatible therapeutic or diagnostic platforms for next-generation nanomedicine and theranostics are discussed.
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Affiliation(s)
- Irene M Mavridis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patriarchou Gregoriou & 27 Neapoleos Str., Agia Paraskevi, Attiki 15341, Greece
| | - Konstantina Yannakopoulou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patriarchou Gregoriou & 27 Neapoleos Str., Agia Paraskevi, Attiki 15341, Greece
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Pathak P, Yao W, Hook KD, Vik R, Winnerdy FR, Brown JQ, Gibb BC, Pursell ZF, Phan AT, Jayawickramarajah J. Bright G-Quadruplex Nanostructures Functionalized with Porphyrin Lanterns. J Am Chem Soc 2019; 141:12582-12591. [PMID: 31322869 DOI: 10.1021/jacs.9b03250] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The intricate arrangement of numerous and closely placed chromophores on nanoscale scaffolds can lead to key photonic applications ranging from optical waveguides and antennas to signal-enhanced fluorescent sensors. In this regard, the self-assembly of dye-appended DNA sequences into programmed photonic architectures is promising. However, the dense packing of dyes can result in not only compromised DNA assembly (leading to ill-defined structures and precipitates) but also to essentially nonfluorescent systems (due to π-π aggregation). Here, we introduce a two-step "tether and mask" strategy wherein large porphyrin dyes are first attached to short G-quadruplex-forming sequences and then reacted with per-O-methylated β-cyclodextrin (PMβCD) caps, to form supramolecular synthons featuring the porphyrin fluor fixed into a masked porphyrin lantern (PL) state, due to intramolecular host-guest interactions in water. The PL-DNA sequences can then be self-assembled into cyclic architectures or unprecedented G-wires tethered with hundreds of porphyrin dyes. Importantly, despite the closely arrayed PL units (∼2 nm), the dyes behave as bright chromophores (up to 180-fold brighter than the analogues lacking the PMβCD masks). Since other self-assembling scaffolds, dyes, and host molecules can be used in this modular approach, this work lays out a general strategy for the bottom-up aqueous self-assembly of bright nanomaterials containing densely packed dyes.
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Affiliation(s)
- Pravin Pathak
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
| | - Wei Yao
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
| | - Katherine Delaney Hook
- Department of Biochemistry and Molecular Biology , Tulane University , New Orleans , Louisiana 70112 , United States
| | - Ryan Vik
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
| | - Fernaldo Richtia Winnerdy
- School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Jonathon Quincy Brown
- Department of Biomedical Engineering , Tulane University , New Orleans , Louisiana 70118 , United States
| | - Bruce C Gibb
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
| | - Zachary F Pursell
- Department of Biochemistry and Molecular Biology , Tulane University , New Orleans , Louisiana 70112 , United States
| | - Anh Tuân Phan
- School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Janarthanan Jayawickramarajah
- Department of Chemistry , Tulane University , 2015 Percival Stern Hall , New Orleans , Louisiana 70118 , United States
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Masai H, Terao J. Synthetic Methodologies for Structurally Defined Linked-[n]Rotaxanes with Permethylated Cyclodextrins: Platform for Functionalized Molecular Electronics. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180349] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Hiroshi Masai
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 168-8902, Japan
| | - Jun Terao
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 168-8902, Japan
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7
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Terao J. Synthesis and Function of Insulated Molecular Devices Bearing [1]Rotaxane Structure. J SYN ORG CHEM JPN 2015. [DOI: 10.5059/yukigoseikyokaishi.73.1007] [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)
- Jun Terao
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University
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Terao J, Konoshima Y, Matono A, Masai H, Fujihara T, Tsuji Y. Synthesis of an organic-soluble π-conjugated [3]rotaxane via rotation of glucopyranose units in permethylated β-cyclodextrin. Beilstein J Org Chem 2014; 10:2800-8. [PMID: 25550746 PMCID: PMC4273295 DOI: 10.3762/bjoc.10.297] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 11/10/2014] [Indexed: 11/23/2022] Open
Abstract
We synthesized symmetrically insulated oligo(para-phenylene) and oligothiophene with a pseudo-linked [3]rotaxane structure by full rotation of glucopyranose units via a flipping (tumbling) mechanism in the π-conjugated guest having two permethylated β-cyclodextrin units at both ends. We also succeeded in the synthesis of an organic-soluble fixed [3]rotaxane by a cross-coupling or complexation reaction of thus formed pseudo linked [3]rotaxane. Oligo(para-phenylene), oligothiophene, and porphyrin derivatives were used as π-conjugated guests with stopper groups.
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Affiliation(s)
- Jun Terao
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, Japan
| | - Yohei Konoshima
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, Japan
| | - Akitoshi Matono
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, Japan
| | - Hiroshi Masai
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, Japan
| | - Tetsuaki Fujihara
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, Japan
| | - Yasushi Tsuji
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, Japan
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9
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Schönbeck C, Westh P, Holm R. Complexation Thermodynamics of Modified Cyclodextrins: Extended Cavities and Distorted Structures. J Phys Chem B 2014; 118:10120-9. [DOI: 10.1021/jp506001j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christian Schönbeck
- NSM,
Research Unit for Functional Biomaterials, Roskilde University, Universitetsvej 1, DK-4000 Roskilde, Denmark
- Biologics
and Pharmaceutical Science, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
- Sino-Danish Center for Education and Research (SDC), Niels Jensens Vej 2, DK-8000 Aarhus C, Denmark
| | - Peter Westh
- NSM,
Research Unit for Functional Biomaterials, Roskilde University, Universitetsvej 1, DK-4000 Roskilde, Denmark
| | - René Holm
- Biologics
and Pharmaceutical Science, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark
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10
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Bauer M, Fajolles C, Charitat T, Wacklin H, Daillant J. Amphiphilic Behavior of New Cholesteryl Cyclodextrins: A Molecular Study. J Phys Chem B 2011; 115:15263-70. [DOI: 10.1021/jp205917q] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Martin Bauer
- CEA, IRAMIS, SIS2M, LIONS, UMR 3299 CEA/CNRS, CEA-Saclay bât. 125, F-91191 Gif-sur-Yvette Cedex, France
| | - Christophe Fajolles
- CEA, IRAMIS, SIS2M, LIONS, UMR 3299 CEA/CNRS, CEA-Saclay bât. 125, F-91191 Gif-sur-Yvette Cedex, France
| | - Thierry Charitat
- Université de Strasbourg, Institut Charles Sadron, CNRS, 23 Rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Hanna Wacklin
- Institut Laue-Langevin, 6 rue Jules Horowitz, BP 156, 38042 Grenoble Cedex, France
| | - Jean Daillant
- CEA, IRAMIS, SIS2M, LIONS, UMR 3299 CEA/CNRS, CEA-Saclay bât. 125, F-91191 Gif-sur-Yvette Cedex, France
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11
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12
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Liu Y, Ke CF, Zhang HY, Cui J, Ding F. Complexation-Induced Transition of Nanorod to Network Aggregates: Alternate Porphyrin and Cyclodextrin Arrays. J Am Chem Soc 2007; 130:600-5. [DOI: 10.1021/ja075981v] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yu Liu
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Chen-Feng Ke
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Heng-Yi Zhang
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Jie Cui
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Fei Ding
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
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13
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Zhang X, Sasaki K, Kuroda Y. Syntheses and Photophysical Studies of Cyclodextrin Derivatives with Two Proximate Anthracenyl Groups. J Org Chem 2006; 71:4872-7. [PMID: 16776515 DOI: 10.1021/jo060449w] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A series of permethylated cyclodextrin derivatives, cyclodextrin dimers doubly bridged with two anthracene moieties (An2CD2) and singly bridged with one (AnCD2) and the monomer bearing two anthracene moieties (An2CD), were newly synthesized. For An2CD2, the two isomeric forms are also identified. All compounds are soluble in both aqueous and various organic solvents. The bisanthracene systems, An2CD2 and An2CD, show the thermal equilibrium in an aqueous solution between the intramolecularly interacting (closed) and less-interacting (open) states of the anthracene moieties, which results in the temperature-dependent absorption changes. These systems also show the characteristic excimer emission that is enhanced in water and weakened in organic solvents. The excitation spectra for the monomer and excimer fluorescence are found to be quite different from each other and similar to the absorption spectra of the open and the closed forms, respectively. The observed unique parallelism between excitation and absorption spectra for the present excimer systems indicates the dual ground state-dual excitation scheme where the excitation state formed from the closed ground state mainly gives excimer. The fluorescence lifetime analyses reveal that the rates of the conversion from the excited state of the open form to that of the closed one (6.0 x 10(6) s(-1) for An2CD2-2) are largely retarded compared with that of the ethyleneoxy linked bisanthracene system (8.8 x 10(7) s(-1)).
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Affiliation(s)
- Xiaoyong Zhang
- Department of Polymer Science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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