1
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Zhang C, Zhang R, Zhang R, Zhang Q, Zhang Zhangjunlong Pku Edu Cn JL, Ding Z. Spectroscopy and absolute quantum efficiency of near-infrared electrochemiluminescence for a macrocyclic palladium complex. J Inorg Biochem 2024; 254:112514. [PMID: 38422586 DOI: 10.1016/j.jinorgbio.2024.112514] [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: 01/01/2024] [Revised: 02/03/2024] [Accepted: 02/23/2024] [Indexed: 03/02/2024]
Abstract
Electrochemiluminescence (ECL) is widely applied as a reliable tool in clinical diagnosis, including immunoassays, cancer biomarker detection, etc. Metal complexes with emission in the near-infrared (NIR) range possess distinct features such as high transmission and minimal tissue auto-absorption, making them versatile for applications in biosensing and other fields. Through ECL spectral studies of an O-linked nonaromatic benzitripyrrin (C^N^N^N) macrocyclic palladium complex (Pd1) with multiple pyrrole structures, we observed emission peaks from the Qx(0,0) and its vibronic Qx(0,1) bands during both photoluminescence (PL) and ECL. Notably, the emission from the Qx(0,1) band was significantly enhanced in the ECL spectrum, demonstrating higher selectivity for near-infrared light at 743 nm. In the ECL annihilation pathway, the appearance of ECL signals showed a strong correlation with the redox processes of the tri-pyrrin structure, revealing a cyclic tri-pyrrin ligand-centered nature with contributions from the metal center. Upon the introduction of tripropylamine (TPrA) and benzoyl peroxide (BPO) coreactants, the ECL signals exhibited enhancements ranging from several hundred to tens of times. Various reaction routes within different coreactant systems are extensively discussed. Additionally, the absolute quantum efficiencies of the Pd1/TPrA coreactant system were determined, showing efficiencies of 0.0032% ± 0.0005% and 0.000074% ± 0.000016% during pulsing and CV scan processes, respectively. This work addresses gaps in the study of palladacycle complexes in ECL and provides insights into the design of NIR luminescent structures that contribute to the fast screening and deep tissue penetration bioimaging techniques.
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Affiliation(s)
- Congyang Zhang
- Department of Chemistry, Western University, London, ON N6A 5B7, Canada; Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Ruizhong Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Ruijing Zhang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; Spin-X Institute, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Qiao Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Jun-Long Zhang Zhangjunlong Pku Edu Cn
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhifeng Ding
- Department of Chemistry, Western University, London, ON N6A 5B7, Canada.
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2
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Wu S, Han Y, Ni Y, Hou X, Wei H, Li Z, Wu J. Unveiling Möbius/Hückel Topology and Aromaticity in A Core-Expanded [10]Annulene at Different Oxidation States. Angew Chem Int Ed Engl 2024; 63:e202320144. [PMID: 38243691 DOI: 10.1002/anie.202320144] [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: 12/28/2023] [Revised: 01/19/2024] [Accepted: 01/19/2024] [Indexed: 01/21/2024]
Abstract
The exploration of annulene's conformation, electronic properties and aromaticity has generated enduring interest over the years, yet it continues to present formidable challenges for annulenes with more than ten carbon atoms. In this study, we present the synthesis of a stable [10]cyclo-para-phenylmethine derivative (1), which bears a resemblance to [10]annulene. 1 can be readily oxidized into its respective cations, wherein electrons are effectively delocalized along the backbone, resulting in different conformations and aromaticity. Both 1 and its tetracation (14+ ⋅ 4SbF6 - ) exhibit a nearly planar conformation with a rectangular shape, akin to the E,Z,E,Z,Z-[10]annulene. In contrast, the radical cation (1⋅+ ⋅ SbCl6 - ) possesses a doubly twisted Hückel topology. Furthermore, the dication (12+ ⋅ 2SbCl6 - ) displays conformational flexibility in solution and crystalizes with the simultaneous presence of Möbius-twisted (1a2+ ⋅ 2SbCl6 - ) and Hückel-planar (1b2+ ⋅ 2SbCl6 - ) isomers in its unit cell. Detailed experimental measurements and theoretical calculations reveal that: (1) 1 demonstrates localized aromaticity with an alternating benzenoid/quinoid structure; (2) 1a2+ ⋅ 2SbCl6 - and 1b2+ ⋅ 2SbCl6 - with 48π electrons are weakly Möbius aromatic and Hückel antiaromatic, respectively; (3) 14+ ⋅ 4SbF6 - exhibits Hückel aromaticity (46π) and open-shell diradical character.
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Affiliation(s)
- Shaofei Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Yi Han
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Yong Ni
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Xudong Hou
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Haipeng Wei
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
| | - Zhengtao Li
- Institute of Zhejiang University-Quzhou, Quzhou, Zhejiang Province, 32400, P. R. China
| | - Jishan Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore
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3
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Wang C, Xu L, Rao Y, Yin B, Zhou M, Song J, Osuka A. Di(p-dibenzi)[40]decaphyrin(1.0.0.0.0.1.0.0.0.0) Pd II Complex: A Weakly Hückel 38π-Aromatic Macrocycle. Chem Asian J 2024; 19:e202300923. [PMID: 37985417 DOI: 10.1002/asia.202300923] [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: 10/20/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 11/22/2023]
Abstract
Di(p-benzi)[40]decaphyrin(1.0.0.0.0.1.0.0.0.0) BF2 complex and tris(p-benzi)[60]pentadecaphyrin(1.0.0.0.0.1.0.0.0.0.1.0.0.0.0) BF2 complex were synthesized by Suzuki-Miyaura coupling of α,α'-diborylated tetrapyrrole BF2 -complex with 1,4-diiodobenzene. Bis-BF2 complex was converted to bis-PdII complex via its free base. Macrocycles bis-BF2 and tris-BF2 complex take Möbius topology but are nonaromatic, since the macrocyclic conjugation is disrupted by the locally aromatic 1,4-phenylene units. In contrast, bis-PdII complex is a weakly Hückel 38π-aromatic macrocycle as evinced by its red-shifted, enhanced, and structured Q-like bands and a small electrochemical HOMO-LUMO gap. Interestingly, one 1,4-pheylene part of bis-PdII complex takes a quinonoidal distorted structure and the other takes a usual benzene structure in a figure-eight conformation with Hückel topology.
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Affiliation(s)
- Chengwei Wang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Ling Xu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Yutao Rao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Bangshao Yin
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Mingbo Zhou
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Jianxin Song
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Atsuhiro Osuka
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
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4
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Białek MJ, Hurej K, Furuta H, Latos-Grażyński L. Organometallic chemistry confined within a porphyrin-like framework. Chem Soc Rev 2023; 52:2082-2144. [PMID: 36852929 DOI: 10.1039/d2cs00784c] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
The world of modified porphyrins changed forever when an N-confused porphyrin (NCP), a porphyrin isomer, was first published in 1994. The replacement of one inner nitrogen with a carbon atom revolutionised the chemistry that one is able to perform within the coordination cavity. One could explore new pathways in the organometallic chemistry of porphyrins by forcing a carbon fragment from the ring or an inner substituent to sit close to an inserted metal ion. Since the NCP discovery, a series of modifications became available to tune the coordination properties of the cavity, introducing a fascinating realm of carbaporphyrins. The review surveys all possible carbatetraphyrins(1.1.1.1) and their spectacular coordination and organometallic chemistry.
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Affiliation(s)
- Michał J Białek
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50383 Wrocław, Poland.
| | - Karolina Hurej
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50383 Wrocław, Poland.
| | - Hiroyuki Furuta
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.
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5
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Organometallic Chemistry within the Structured Environment Provided by the Macrocyclic Cores of Carbaporphyrins and Related Systems. Molecules 2023; 28:molecules28031496. [PMID: 36771158 PMCID: PMC9920839 DOI: 10.3390/molecules28031496] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 02/08/2023] Open
Abstract
The unique environment within the core of carbaporphyrinoid systems provides a platform to explore unusual organometallic chemistry. The ability of these structures to form stable organometallic derivatives was first demonstrated for N-confused porphyrins but many other carbaporphyrin-type systems were subsequently shown to exhibit similar or complementary properties. Metalation commonly occurs with catalytically active transition metal cations and the resulting derivatives exhibit widely different physical, chemical and spectroscopic properties and range from strongly aromatic to nonaromatic and antiaromatic species. Metalation may trigger unusual, highly selective, oxidation reactions. Alkyl group migration has been observed within the cavity of metalated carbaporphyrins, and in some cases ring contraction of the carbocyclic subunit takes place. Over the past thirty years, studies in this area have led to multiple synthetic routes to carbaporphyrinoid ligands and remarkable organometallic chemistry has been reported. An overview of this important area is presented.
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6
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Vetter G, Białońska A, Krzyszowska P, Koniarz S, Pacholska‐Dudziak E. Two Rhodium(III) Ions Confined in a [18]Porphyrin Frame: 5,10,15,20‐Tetraaryl‐21,23‐Dirhodaporphyrin. Chemistry 2022; 28:e202201513. [PMID: 35665970 PMCID: PMC9545270 DOI: 10.1002/chem.202201513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Indexed: 11/23/2022]
Abstract
Tetraaryl‐21,23‐dirhodaporphyrin and a series of related monorhodaporphyrins have been obtained by tellurium‐to‐rhodium exchange in a reaction of tetraaryl‐21,23‐ditelluraporphyrin with [RhCl(CO)2]2. These organometallic metallaporphyrins contain rhodium(III) centers embedded in rhodacyclopentadiene rings, incorporated within the porphyrin frames. The skeletons of 21,23‐dirhodaporphyrin and 21‐rhoda‐23‐telluraporphyrin are strongly deformed in‐plane from the rectangular shape typical for porphyrins, due to rhodium(III) coordination preferences, the large size of the two core atoms, and the porphyrin skeleton constrains. These two metallaporphyrins exhibit fluxional behavior, as studied by 1H NMR and DFT, involving the in‐plane motion and the switch of the rhodium center(s) between two nitrogen donors. A side product detected in the reaction mixture, 21‐oxa‐23‐rhodaporphyrin, results from tellurium‐to‐oxygen exchange, occurring in parallel to the tellurium‐to‐rhodium exchange. The reaction paths and mechanisms have been analyzed. The title 21,23‐dirhodaporphyrin contains a bridged bimetallic unit, Rh2Cl2, in the center of the macrocycle, with two rhodium(III) ions lying approximately in the plane of the porphyrinoid skeleton. The geometry of the implanted Rh2Cl2 unit is affected by macrocyclic constrains.
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Affiliation(s)
- Grzegorz Vetter
- Faculty of Chemistry University of Wroclaw ul. Joliot-Curie 14 50-383 Wroclaw Poland
| | - Agata Białońska
- Faculty of Chemistry University of Wroclaw ul. Joliot-Curie 14 50-383 Wroclaw Poland
| | - Paulina Krzyszowska
- Faculty of Chemistry University of Wroclaw ul. Joliot-Curie 14 50-383 Wroclaw Poland
| | - Sebastian Koniarz
- Faculty of Chemistry University of Wroclaw ul. Joliot-Curie 14 50-383 Wroclaw Poland
| | - Ewa Pacholska‐Dudziak
- Faculty of Chemistry University of Wroclaw ul. Joliot-Curie 14 50-383 Wroclaw Poland
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7
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Ali MA, Ravikanth M. Vacatadithiasapphyrins: Synthesis, Structure, and Spectral and Redox Properties. J Org Chem 2022; 87:10815-10824. [PMID: 35943824 DOI: 10.1021/acs.joc.2c01088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Four examples of novel aromatic [22]vacatadithiasapphyrins were synthesized by refluxing appropriate [22]telluradithiasapphyrins in 1,2-dichlorobenzene in the presence of excess HCl followed by simple column chromatographic purification. The [22]vacatadithiasapphyrins can exist in three conformers "in", "out", and "zigzag" w.r.t the butadiene moiety, and under our experimental conditions, the "out" conformer was the major compound. The X-ray structure obtained for one of the "out" conformers of vacatadithiasapphyrins revealed that the macrocycle was planar similar to its parent telluradithiasapphyrin and showed effective π-delocalization over the entire macrocyclic core. NMR studies supported the formation of the "out" conformer and suggested that the vacatadithiasapphyrins were less aromatic than the parent telluradithiasapphyrins. Density functional theory, time-dependent DFT, and nuclear independent chemical shift studies indicated that the protonated form of vacatadithiasapphyrin was more aromatic than the parent protonated telluradithiasapphyrin. The absorption spectra of vacatadithiasapphyrins showed a typical strong Soret band at ∼488 nm and four relatively broad Q-bands in the region of 590-860 nm, and electrochemical studies suggest that vacatadithiasapphyrins were easier to oxidize and easier to reduce compared to the parent telluradithiasapphyrins.
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Affiliation(s)
- Md Ashif Ali
- Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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8
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Thuita DW, Brückner C. Metal Complexes of Porphyrinoids Containing Nonpyrrolic Heterocycles. Chem Rev 2022; 122:7990-8052. [PMID: 35302354 DOI: 10.1021/acs.chemrev.1c00694] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The replacement of one or more pyrrolic building block(s) of a porphyrin by a nonpyrrolic heterocycle leads to the formation of so-called pyrrole-modified porphyrins (PMPs), porphyrinoids of broad structural variability. The wide range of coordination environments (type, number, charge, and architecture of the donor atoms) that the pyrrole-modified frameworks provide to the central metal ions, the frequent presence of donor atoms at their periphery, and their often observed nonplanarity or conformational flexibility distinguish the complexes of the PMPs clearly from those of the traditional square-planar, dianionic, N4-coordinating (hydro)porphyrins. Their different coordination properties suggest their utilization in areas beyond which regular metalloporphyrins are suitable. Following a general introduction to the synthetic methodologies available to generate pyrrole-modified porphyrins, their general structure, history, coordination chemistry, and optical properties, this Review highlights the chemical, electronic (optical), and structural differences of specific classes of metalloporphyrinoids containing nonpyrrolic heterocycles. The focus is on macrocycles with similar "tetrapyrrolic" architectures as porphyrins, thusly excluding the majority of expanded porphyrins. We highlight the relevance and application of these metal complexes in biological and technical fields as chemosensors, catalysts, photochemotherapeutics, or imaging agents. This Review provides an introduction to the field of metallo-PMPs as well as a comprehensive snapshot of the current state of the art of their synthesis, structures, and properties. It also aims to provide encouragement for the further study of these intriguing and structurally versatile metalloporphyrinoids.
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Affiliation(s)
- Damaris Waiyigo Thuita
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Christian Brückner
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
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9
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Ruffin H, Fihey A, Boitrel B, Le Gac S. Möbius Zn
II
‐Hexaphyrins Bearing a Chiral Coordinating Arm: A Chiroptical Switch Featuring P/M Twist Inversion Controlled by Achiral Effectors. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hervé Ruffin
- Univ Rennes CNRS, ISCR Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
| | - Arnaud Fihey
- Univ Rennes CNRS, ISCR Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
| | - Bernard Boitrel
- Univ Rennes CNRS, ISCR Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
| | - Stéphane Le Gac
- Univ Rennes CNRS, ISCR Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
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10
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Kim J, Oh J, Park S, Yoneda T, Osuka A, Lim M, Kim D. Modulations of a Metal-Ligand Interaction and Photophysical Behaviors by Hückel-Möbius Aromatic Switching. J Am Chem Soc 2021; 144:582-589. [PMID: 34967619 DOI: 10.1021/jacs.1c11705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In organometallic complexes containing π-conjugated macrocyclic chelate ligands, conformational change significantly affects metal-ligand electronic interactions, hence tuning properties of the complexes. In this regard, we investigated the metal-ligand interactions in hexaphyrin mono-Pd(II) complexes Pd[28]M and Pd[26]H, which exhibit a redox-induced switching of Hückel-Möbius aromaticity and subsequent molecular conformation, and their effect on the electronic structure and photophysical behaviors. In Möbius aromatic Pd[28]M, the weak metal-ligand interaction leads to the π electronic structure of the hexaphyrin ligand remaining almost intact, which undergoes efficient intersystem crossing (ISC) assisted by the heavy-atom effect of the Pd metal. In Hückel aromatic Pd[26]H, the significant metal-ligand interaction results in ligand-to-metal charge-transfer (LMCT) in the excited-state dynamics. These contrasting metal-ligand electronic interactions have been revealed by time-resolved electronic and vibrational spectroscopies and time-dependent DFT calculations. This work indicates that the conspicuous modulation of metal-ligand interaction by Hückel-Möbius aromaticity switching is an appealing approach to manipulate molecular properties of metal complexes, further enabling the fine-tuning of metal-ligand interactions and the novel design of functional organometallic materials.
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Affiliation(s)
- Jinseok Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 03722, Korea
| | - Juwon Oh
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 03722, Korea.,Department of Chemistry, Soonchunhyang University, Asan-si, Chungnam 31538, Korea
| | - Seongchul Park
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Tomoki Yoneda
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Manho Lim
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 03722, Korea
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11
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Kim J, Oh J, Osuka A, Kim D. Porphyrinoids, a unique platform for exploring excited-state aromaticity. Chem Soc Rev 2021; 51:268-292. [PMID: 34879124 DOI: 10.1039/d1cs00742d] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Recently, Baird (anti)aromaticity has been referred to as a description of excited-state (anti)aromaticity. With the term of Baird's rule, recent studies have intensively verified that the Hückel aromatic [4n + 2]π (or antiaromatic [4n]π) molecules in the ground state are reversed to give Baird aromatic [4n]π (or Baird antiaromatic [4n + 2]π) molecules in the excited states. Since the Hückel (anti)aromaticity has great influence on the molecular properties and reaction mechanisms, the Baird (anti)aromaticity has been expected to act as a dominant factor in governing excited-state properties and processes, which has attracted intensive scientific investigations for the verification of the concept of reversed aromaticity in the excited states. In this scientific endeavor, porphyrinoids have recently played leading roles in the demonstration of the aromaticity reversal in the excited states and its conceptual development. The distinct structural and electronic nature of porphyhrinoids depending on their (anti)aromaticity allow the direct observation of excited-state aromaticity reversal, Baird's rule. The explicit experimental demonstration with porphyrinoids has contributed greatly to its conceptual development and application in novel functional organic materials. Based on the significant role of porphyrinoids in the field of excited-state aromaticity, this review provides an overview of the experimental verification of the reversal concept of excited-state aromaticity by porphyrinoids and the recent progress on its conceptual application in novel functional molecules.
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Affiliation(s)
- Jinseok Kim
- Department of Chemistry, Yonsei University, Seoul 03722, Korea.
| | - Juwon Oh
- Department of Chemistry, Soonchunhyang University, Asan-si 31538, Korea.
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
| | - Dongho Kim
- Department of Chemistry, Yonsei University, Seoul 03722, Korea.
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12
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Ruffin H, Fihey A, Boitrel B, Le Gac S. Möbius Zn II -Hexaphyrins Bearing a Chiral Coordinating Arm: A Chiroptical Switch Featuring P/M Twist Inversion Controlled by Achiral Effectors. Angew Chem Int Ed Engl 2021; 61:e202113844. [PMID: 34813138 DOI: 10.1002/anie.202113844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Indexed: 11/07/2022]
Abstract
By their conformational flexibility, Möbius aromatic hexaphyrins provide a dynamic chirality attractive to develop stimuli responsive systems such as chiroptical switches. A regular [28]hexaphyrin has been equipped with a chiral coordinating arm to achieve transfer of chirality from a fix stereogenic element to the dynamic Möbius one. The arm allows straightforward formation of labile monometallic ZnII complexes with an exogenous ligand, either a carboxylato or an amino with opposite inwards/outwards orientations relative to the Möbius ring. As a corollary, the chiral coordinating arm is constrained over the ring or laterally, inducing opposite P and M Möbius configurations with unprecedented high stereoselectivity (diast. excess greater than 95 %). By tuning the transfer of chirality, these achiral effectors generate electronic circular dichroism spectra with bisignate Cotton effect of opposite signs. Switching between distinct chiroptical states was ultimately achieved in mild conditions owing to ligand exchange, with high robustness (10 cycles).
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Affiliation(s)
- Hervé Ruffin
- Univ Rennes, CNRS, ISCR, Institut des Sciences Chimiques de Rennes)-UMR 6226, 35000, Rennes, France
| | - Arnaud Fihey
- Univ Rennes, CNRS, ISCR, Institut des Sciences Chimiques de Rennes)-UMR 6226, 35000, Rennes, France
| | - Bernard Boitrel
- Univ Rennes, CNRS, ISCR, Institut des Sciences Chimiques de Rennes)-UMR 6226, 35000, Rennes, France
| | - Stéphane Le Gac
- Univ Rennes, CNRS, ISCR, Institut des Sciences Chimiques de Rennes)-UMR 6226, 35000, Rennes, France
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13
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Abdisa Kerayu B, Ching WM, Dela Cruz JA, Hung CH. 2,5-Thienylene-Strapped Bicyclic and Tricyclic Expanded Porphyrins. Chempluschem 2020; 84:810-815. [PMID: 31943993 DOI: 10.1002/cplu.201900013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 05/10/2019] [Indexed: 11/08/2022]
Abstract
An [18]thiaporphyrin[36]dithiaoctaphyrin-[18]thiaporphyrin tricyclic macrocycle, fused through the 2,5-thienylene bridging moiety, was isolated during the preparation of 2,5-thienylene-strapped [26]hexaphyrin containing o-dichlorophenyl groups as meso substituents. The spectroscopic data of the 2,5-thienylene-strapped [26]hexaphyrin verified contributions of aromaticity from ring currents of both the [18]thiaporphyrin and the [26]hexaphyrin. The crystal structure of the tricyclic macrocycle revealed a distorted [36]dithiaoctaphyrin central core with two [18]thiaporphyrin sidewheels oriented nearly perpendicular to the mean-plane of dithiaoctaphyrin, implying the existence of independent π-conjugated systems. Both the absorption maximum at 441 nm and the chemical shifts in the 1 H NMR spectrum of the tricyclic macrocycle are dominated by diatropic ring currents of two aromatic [18]thiaporphyrin sidewheels.
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Affiliation(s)
- Bulti Abdisa Kerayu
- Institute of Chemistry, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei, 11529, Taiwan.,Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 10607 (Taiwan)-Min Ching Instrumentation Center National Taiwan Normal University Taipei 10617, Taiwan
| | - Wei-Min Ching
- Institute of Chemistry, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei, 11529, Taiwan
| | - Jay-Ar Dela Cruz
- Institute of Chemistry, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei, 11529, Taiwan.,Sustainable Chemical Science and Technology Program, Taiwan International Research program Academia Sinica, Taipei, 11529, Taiwan
| | - Chen-Hsiung Hung
- Institute of Chemistry, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei, 11529, Taiwan.,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
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14
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Hojniak-Thyssen S, Szczepaniak M, Latos-Grażyński L, Pacholska-Dudziak E. A flexible expanded heterocorrole: Tellura[22]porphyrin(6.1.1.0). J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s1088424619501621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
An expanded heterocorrole, meso-tetraaryl-tellura[22]porphyrin(6.1.1.0), containing a bipyrrole moiety and a six-carbon long link, has been synthesized. The reaction path proceeds through a controlled acid-promoted extrusion of one tellurium atom from meso-aryl-26,28-ditellurasapphyrin, leading to a structure where one tellurophene ring of the substrate is replaced by a bridging acyclic four-carbon unit. This aromatic porphyrin-annulene hybrid is conformationally flexible in solution, on account of the C4 unit adopting two different configurations: trans–cis–trans or all-trans. Studies of the dynamic behavior of tellura[22]porphyrin(6.1.1.0) in solution were performed by means of 1H and 125Te NMR spectroscopy. The X-ray structure of the all-trans form with trapezoid macrocyclic skeleton is also presented.
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Affiliation(s)
- Sandra Hojniak-Thyssen
- Department of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Michał Szczepaniak
- Department of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | | | - Ewa Pacholska-Dudziak
- Department of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
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15
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A Pincer Motif Etched into a meta-Benziporphyrin Frame. TOP ORGANOMETAL CHEM 2020. [DOI: 10.1007/3418_2020_61] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Dash S, Ghosh A, Srinivasan A, Suresh CH, Chandrashekar TK. Protonation-Triggered Hückel and Möbius Aromatic Transformations in Nonaromatic Core-Modified [30]Hexaphyrin(2.1.1.2.1.1) and Annulated [28]Hexaphyrin(2.1.1.0.1.1). Org Lett 2019; 21:9637-9641. [PMID: 31763854 DOI: 10.1021/acs.orglett.9b03805] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two 1,2-diphenyl-1,2-dithienylethene-embedded hexaphyrins 6 and 8 containing 30π and 28π electrons, respectively, in conjugation exhibit nonaromatic characteristics. Compound 6 shows an unusual bond length equalization in its electronic structure. However, on protonation, 6 exhibits Hückel aromatic characteristics while 8 shows Möbius aromatic characteristics. The changes in aromaticity are accompanied by change in conformation from a figure-eight/twisted structure to an open extended structure.
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Affiliation(s)
- Syamasrit Dash
- School of Chemical Sciences , National Institute of Science Education and Research (NISER) Bhubaneswar 752050 , Odisha, HBNI , India
| | - Arindam Ghosh
- School of Chemical Sciences , National Institute of Science Education and Research (NISER) Bhubaneswar 752050 , Odisha, HBNI , India
| | - A Srinivasan
- School of Chemical Sciences , National Institute of Science Education and Research (NISER) Bhubaneswar 752050 , Odisha, HBNI , India
| | - Cherumuttathu H Suresh
- Inorganic and theoretical chemistry section, Chemical Science and Technology Division , CSIR-National Institute of Interdisciplinary Science and Technology , Trivandrum 695019 , Kerala , India
| | - Tavarekere K Chandrashekar
- School of Chemical Sciences , National Institute of Science Education and Research (NISER) Bhubaneswar 752050 , Odisha, HBNI , India
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17
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Pacholska‐Dudziak E, Latos‐Grażyński L, Białońska A. Shaping a Porphyrinoid Frame by Heteroatoms Extrusion: Formation of an Expanded [22]Triphyrin(6.6.0). Chemistry 2019; 25:10088-10097. [DOI: 10.1002/chem.201901571] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Ewa Pacholska‐Dudziak
- Department of ChemistryUniversity of Wroclaw ul. Joliot-Curie 14 50-383 Wroclaw Poland
| | | | - Agata Białońska
- Department of ChemistryUniversity of Wroclaw ul. Joliot-Curie 14 50-383 Wroclaw Poland
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18
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Soya T, Osuka A. Internally Bridged Hückel Aromatic [46]Decaphyrins: (Doubly‐Twisted‐Annuleno)Doubly‐Twisted‐Annulene Variants. Chemistry 2019; 25:5173-5176. [DOI: 10.1002/chem.201900819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/06/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Takanori Soya
- Department of ChemistryGraduate School of ScienceKyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of ChemistryGraduate School of ScienceKyoto University Sakyo-ku Kyoto 606-8502 Japan
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19
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Latham AN, Ferrence GM, Lash TD. Metalation and Methyl Group Migration in 21-, 22-, and 23-Methylcarbaporphyrins: Synthesis and Characterization of Palladium(II), Rhodium(I), and Rhodium(III) Derivatives. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00863] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alissa N. Latham
- Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
| | - Gregory M. Ferrence
- Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
| | - Timothy D. Lash
- Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
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20
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Higashino T, Kumagai A, Sakaki S, Imahori H. Reversible π-system switching of thiophene-fused thiahexaphyrins by solvent and oxidation/reduction. Chem Sci 2018; 9:7528-7539. [PMID: 30319753 PMCID: PMC6179095 DOI: 10.1039/c8sc02448k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 08/07/2018] [Indexed: 12/23/2022] Open
Abstract
The concept of chemical topology has generated considerable interest among chemists and one of the state-of-the-art topics is Möbius topology in cyclic π-conjugated molecules. In this regard, expanded porphyrins have been extensively studied because of their facile topological interconversions and attractive optoelectronic properties. A typical example involves [28]hexaphyrins: they show topological conversion between planar Hückel and twisted Möbius topologies owing to their flexible structure. With this in mind, we designed a [28]hexaphyrin where one dimethine pyrrole unit was replaced with dithieno[3,4-b:3',4'-d]thiophene (β-DTT), aiming at a reversible switching between macrocyclic and cross-conjugated π-systems by a change in molecular topologies. Considering that the β-DTT unit can offer both macrocyclic and cross-conjugated π-circuits, we envisioned that a combination of the topological interconversion of [28]hexaphyrin with the two π-circuits of the β-DTT unit would enable a reversible switching between macrocyclic and cross-conjugated π-circuits on Möbius and Hückel topologies, respectively, by a simple conformational change. Unexpectedly, the hexaphyrin revealed a unique, unprecedented π-system switching between a Möbius cross-conjugated π-system and a Hückel antiaromatic π-system, which was fully supported by both experimental and theoretical investigations. Meanwhile, the [28]hexaphyrin was also found to be redox interconvertible with the corresponding [26]hexaphyrin with a Hückel cross-conjugated π-system. These results demonstrate that the β-DTT unit is a new effective motif to realize π-system switching by changing molecular and π-system topologies. Importantly, external stimuli, i.e., solvent, as well as oxidation/reduction can be used to trigger the topological changes in expanded porphyrins with the help of the β-DTT unit.
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Affiliation(s)
- Tomohiro Higashino
- Department of Molecular Engineering , Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan . ;
| | - Atsushi Kumagai
- Department of Molecular Engineering , Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan . ;
| | - Shigeyoshi Sakaki
- Fukui Institute for Fundamental Chemistry , Kyoto University , Sakyo-ku , Kyoto 606-8103 , Japan
| | - Hiroshi Imahori
- Department of Molecular Engineering , Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan . ;
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Sakyo-ku , Kyoto 606-8501 , Japan
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21
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Hong JH, Aslam AS, Ko MS, Choi J, Lee Y, Cho DG. Bond Rotation in an Aromatic Carbaporphyrin: Allyliporphyrin. Chemistry 2018; 24:10054-10058. [PMID: 29740892 DOI: 10.1002/chem.201802176] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Indexed: 01/24/2023]
Abstract
Allyliporphyrin is a carbaporphyrin that has replaced one pyrrole with an allyl group. Dynamic behavior (bond rotation) was observed by variable temperature 1 H NMR and 2D-NOESY NMR spectroscopy and theoretically examined by DFT calculations. These studies revealed that well-defined bond rotation was first observed in the limited space of the carbaporphyrin from 2 through cis-2 and the calculated rotational barrier was low enough, with the relative energy level of cis-2 only 0.65 kcal mol-1 higher than 2. The synthesized allyliporphyrin (2) is a strongly aromatic macrocycle as indicated by the chemical shifts of its inner NH and CH signals. However, its palladium complex displayed reduced aromaticity due to the tilted thiophene of Pd-2.
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Affiliation(s)
- Jung-Ho Hong
- Department of Chemistry and Chemical Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Adil S Aslam
- Department of Chemistry and Chemical Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Min-Sung Ko
- Department of Chemistry and Chemical Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Jonghoon Choi
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 3055-701, Republic of Korea
| | - Yunho Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 3055-701, Republic of Korea
| | - Dong-Gyu Cho
- Department of Chemistry and Chemical Engineering, Inha University, Incheon, 22212, Republic of Korea
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22
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An K, Shen T, Zhu J. Craig-Type Möbius Aromaticity and Antiaromaticity in Dimetalla[10]annulenes: A Metal-Induced Yin-and-Yang Pair. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00341] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ke An
- State Key Laboratory of Physical
Chemistry of Solid Surfaces, Fujian Provincial Key Laboratory of Theoretical
Computational Chemistry and Department of Chemistry, College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Ting Shen
- State Key Laboratory of Physical
Chemistry of Solid Surfaces, Fujian Provincial Key Laboratory of Theoretical
Computational Chemistry and Department of Chemistry, College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
| | - Jun Zhu
- State Key Laboratory of Physical
Chemistry of Solid Surfaces, Fujian Provincial Key Laboratory of Theoretical
Computational Chemistry and Department of Chemistry, College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen 361005, PR China
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23
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Adinarayana B, Thomas AP, Yadav P, Mukundam V, Srinivasan A. Carbatriphyrin(3.1.1)-A Distinct Coordination Approach of BIII
to Generate Organoborane and Weak C−H⋅⋅⋅B Interactions. Chemistry 2017; 23:2993-2997. [DOI: 10.1002/chem.201605332] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Indexed: 12/16/2022]
Affiliation(s)
- B. Adinarayana
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar; 752050 Odisha India
| | - Ajesh P. Thomas
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar; 752050 Odisha India
| | - Prerna Yadav
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar; 752050 Odisha India
| | - Vanga Mukundam
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar; 752050 Odisha India
| | - A. Srinivasan
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar; 752050 Odisha India
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24
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Sung YM, Oh J, Cha WY, Kim W, Lim JM, Yoon MC, Kim D. Control and Switching of Aromaticity in Various All-Aza-Expanded Porphyrins: Spectroscopic and Theoretical Analyses. Chem Rev 2016; 117:2257-2312. [DOI: 10.1021/acs.chemrev.6b00313] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Young Mo Sung
- Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, South Korea
| | - Juwon Oh
- Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, South Korea
| | - Won-Young Cha
- Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, South Korea
| | - Woojae Kim
- Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, South Korea
| | - Jong Min Lim
- Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, South Korea
- Physical
and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - Min-Chul Yoon
- Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, South Korea
- Manufacturing
Engineering Team, Memory Manufacturing Operation Center, Samsung Electronics, Samsungjeonja-ro 1, Hwasung-si, Gyeonggi-do 18448, South Korea
| | - Dongho Kim
- Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, South Korea
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25
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Abstract
The use of cyclic polyene perimeter-model approaches, such as Gouterman's four-orbital model and Michl's perimeter model, to analyze trends in the electronic structures and optical properties of expanded, contracted, and isomeric porphyrins is described with an emphasis on the use of magnetic circular dichroism (MCD) spectroscopy to validate the results of TD-DFT calculations. Trends in the electronic structures and optical properties of isomeric porphyrins are examined by comparing the properties of porphycenes, corrphycenes, hemiporphycenes, isoporphycenes, N-confused and neoconfused porphyrins, and norroles, whereas those of ring-contracted porphyrins are examined by comparing the properties of subporphyrins, triphyrins, and vacataporphyrins. The ring-expanded compounds that are examined include cyclo[n]pyrroles, [22]pentaphyrins(1.1.1.1.1), sapphyrins, smaragdyrins, isosmaragdyrins, orangarins, ozaphyrins, [26]hexaphyrins(1.1.1.1.1.1), rubyrins, rosarins, amethyrins, isoamethyrins, bronzaphyrins, and doubly N-confused hexaphyrins.
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Affiliation(s)
- John Mack
- Department of Chemistry, Rhodes University , Grahamstown 6140, South Africa
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26
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Abstract
This review underscores the conformational flexibility of porphyrinoids, a unique class of functional molecules, starting from the smallest triphyrins(1.1.1) via [18]porphyrins(1.1.1.1) and concluding with a variety of expanded porphyrinoids and heteroporphyrinoids, including the enormous [96]tetracosaphyrin(1.0.1.0.1.0.1.0.1.0.1.0.1.0.1.0.1.0.1.0.1.0.1.0). The specific flexibility of porphyrinoids has been documented as instrumental in the designing or redesigning of macrocyclic frames, particularly in the search for adjustable platforms for coordination or organometallic chemistry, anion binding, or mechanistic switches in molecular devices. A structural prearrangement to coordinate one or more metal ions has been outlined. The coverage of the topic focuses on representative examples of geometry or conformational rearrangements for each selected class of the numerous porphyrinoids accordingly categorized by the number of built-in carbo- or heterocycles.
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Affiliation(s)
- Bartosz Szyszko
- Wydział Chemii, Uniwersytet Wrocławski , ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Michał J Białek
- Wydział Chemii, Uniwersytet Wrocławski , ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Ewa Pacholska-Dudziak
- Wydział Chemii, Uniwersytet Wrocławski , ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
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27
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Shimizu S. Recent Advances in Subporphyrins and Triphyrin Analogues: Contracted Porphyrins Comprising Three Pyrrole Rings. Chem Rev 2016; 117:2730-2784. [PMID: 27779851 DOI: 10.1021/acs.chemrev.6b00403] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Subporphyrinato boron (subporphyrin) was elusive until the syntheses of tribenzosubporphine in 2006 and meso-aryl-substituted subporphyrin in 2007. These novel contracted analogues possess a 14π-electron conjugated system embedded in a bowl-shaped structure. They exhibit absorption and fluorescence in the UV/vis region and nonlinear optical properties due to their octupolar structures. The unique coordination geometry around the central boron atom in the structure of subporphyrin enabled investigation of rare boron species, such as borenium cations, boron hydrides, and boron peroxides. Along with the burgeoning development of the chemistry of subporphyrins, analogous triphyrin systems have also emerged. Their rich coordination chemistry as a result of their free-base structures, which are different from the boron-coordinating structure of subporphyrins, has been intensively investigated. On the basis of the unique structures and reactivities of subporphyrins and their related triphyrin analogues, supramolecular architectures and covalently linked multicomponent systems have also been actively pursued. This Review provides an overview of the development of subporphyrin and triphyrin chemistry in the past decade and future prospects in this field, which may inspire molecular design toward applications based on their unique properties.
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Affiliation(s)
- Soji Shimizu
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University , Fukuoka 819-0395, Japan.,Center for Molecular Systems (CMS), Kyushu University , Fukuoka 819-0395, Japan
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28
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Naoda K, Osuka A. A Doubly Zwitterionic Antiaromatic [28]Hexaphyrin Formed upon Deprotonation of 5,20-Di(N-methyl-4-pyridinium)-Substituted [28]Hexaphyrin. Chem Asian J 2016; 11:2849-2853. [PMID: 27529538 DOI: 10.1002/asia.201601071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Indexed: 11/06/2022]
Abstract
A rectangular 5,20-di(4-pyridyl) [26]hexaphyrin was reduced with NaBH4 to give the corresponding twisted Möbius aromatic [28]hexaphyrin. Subsequent double N-methylation gave a dicationic 5,20-di(N-methyl-4-pyridinium) [28]hexaphyrin, which was converted to a doubly zwitterionic and Hückel antiaromatic [28]hexaphyrin upon deprotonation with sodium methoxide.
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Affiliation(s)
- Koji Naoda
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan.
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29
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Affiliation(s)
- Timothy D. Lash
- Department of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
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30
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Tanaka T, Osuka A. Chemistry of meso-Aryl-Substituted Expanded Porphyrins: Aromaticity and Molecular Twist. Chem Rev 2016; 117:2584-2640. [DOI: 10.1021/acs.chemrev.6b00371] [Citation(s) in RCA: 283] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Takayuki Tanaka
- Department of Chemistry,
Graduate School of Science, Kyoto University, Kyoto 606-8501, Japan
| | - Atsuhiro Osuka
- Department of Chemistry,
Graduate School of Science, Kyoto University, Kyoto 606-8501, Japan
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31
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Mori T, Tanaka T, Higashino T, Yoshida K, Osuka A. Combined Experimental and Theoretical Investigations on Optical Activities of Möbius Aromatic and Möbius Antiaromatic Hexaphyrin Phosphorus Complexes. J Phys Chem A 2016; 120:4241-8. [DOI: 10.1021/acs.jpca.6b03978] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tadashi Mori
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1
Yamada-oka, Suita 565-0871, Japan
| | - Takayuki Tanaka
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Tomohiro Higashino
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Kota Yoshida
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Atsuhiro Osuka
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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32
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Oh J, Sung YM, Kim W, Mori S, Osuka A, Kim D. Aromaticity Reversal in the Lowest Excited Triplet State of Archetypical Möbius Heteroannulenic Systems. Angew Chem Int Ed Engl 2016; 55:6487-91. [DOI: 10.1002/anie.201602083] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 03/22/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Juwon Oh
- Department of Chemistry; Spectroscopy Laboratory for Functional π-Electronic Systems; Yonsei University; Seoul 120-749 Korea
| | - Young Mo Sung
- Department of Chemistry; Spectroscopy Laboratory for Functional π-Electronic Systems; Yonsei University; Seoul 120-749 Korea
| | - Woojae Kim
- Department of Chemistry; Spectroscopy Laboratory for Functional π-Electronic Systems; Yonsei University; Seoul 120-749 Korea
| | - Shigeki Mori
- Department of Chemistry; Graduated School of Science; Kyoto University; Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduated School of Science; Kyoto University; Kyoto 606-8502 Japan
| | - Dongho Kim
- Department of Chemistry; Spectroscopy Laboratory for Functional π-Electronic Systems; Yonsei University; Seoul 120-749 Korea
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33
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Oh J, Sung YM, Kim W, Mori S, Osuka A, Kim D. Aromaticity Reversal in the Lowest Excited Triplet State of Archetypical Möbius Heteroannulenic Systems. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602083] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Juwon Oh
- Department of Chemistry; Spectroscopy Laboratory for Functional π-Electronic Systems; Yonsei University; Seoul 120-749 Korea
| | - Young Mo Sung
- Department of Chemistry; Spectroscopy Laboratory for Functional π-Electronic Systems; Yonsei University; Seoul 120-749 Korea
| | - Woojae Kim
- Department of Chemistry; Spectroscopy Laboratory for Functional π-Electronic Systems; Yonsei University; Seoul 120-749 Korea
| | - Shigeki Mori
- Department of Chemistry; Graduated School of Science; Kyoto University; Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduated School of Science; Kyoto University; Kyoto 606-8502 Japan
| | - Dongho Kim
- Department of Chemistry; Spectroscopy Laboratory for Functional π-Electronic Systems; Yonsei University; Seoul 120-749 Korea
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34
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Mallick A, Rath H. Möbius Aromatic Core-Modified Heterocyclic [20] Macrocycles (4.1.1) with a Protruding N
-Methyl Pyrrole Ring. Chem Asian J 2016; 11:986-90. [DOI: 10.1002/asia.201600025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Abhijit Mallick
- Department of Inorganic Chemistry; Indian Association for the Cultivation of Science; 2 A/2 B Raja SC Mullick Road Jadavpur Kolkata 700 032 India), Fax: (+91) 33-24732805
| | - Harapriya Rath
- Department of Inorganic Chemistry; Indian Association for the Cultivation of Science; 2 A/2 B Raja SC Mullick Road Jadavpur Kolkata 700 032 India), Fax: (+91) 33-24732805
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35
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Ghosh A, Chaudhary A, Srinivasan A, Suresh CH, Chandrashekar TK. [32]π Fused Core-Modified Heptaphyrin with Möbius Aromaticity. Chemistry 2016; 22:3942-6. [DOI: 10.1002/chem.201505116] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Arindam Ghosh
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), Bhubaneswar; 751005 Odisha India
| | - Arvind Chaudhary
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), Bhubaneswar; 751005 Odisha India
| | - A. Srinivasan
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), Bhubaneswar; 751005 Odisha India
| | - Cherumuttathu H. Suresh
- Inorganic & Theoretical Chemistry Section; Chemical Sciences and Technology Division; CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum -; 695019 Kerala India
| | - Tavarekere K. Chandrashekar
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), Bhubaneswar; 751005 Odisha India
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36
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Białek MJ, Latos-Grażyński L. Palladium(II), Ruthenium(II), and Ruthenium(III) Complexes of 23-Thiaazuliporphyrin: The Case of Coordination-Induced Contraction. Inorg Chem 2016; 55:1758-69. [DOI: 10.1021/acs.inorgchem.5b02684] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michał J. Białek
- Department of Chemistry, University of Wrocław, F.
Joliot-Curie 14, 50-383 Wrocław, Poland
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37
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Oh J, Mori H, Sung YM, Kim W, Osuka A, Kim D. Switchable π-electronic network of bis(α-oligothienyl)-substituted hexaphyrins between helical versus rectangular circuit. Chem Sci 2015; 7:2239-2245. [PMID: 29910912 PMCID: PMC5977443 DOI: 10.1039/c5sc04263a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 12/03/2015] [Indexed: 11/21/2022] Open
Abstract
The switching phenomena of conformation with π-electronic network through deprotonation–protonation processes were investigated by employing a series of 5,20-bis(α-oligothienyl) substituted hexaphyrins(1.1.1.1.1.1).
The switching phenomena of conformation with π-electronic network through deprotonation–protonation processes were investigated by employing a series of 5,20-bis(α-oligothienyl) substituted hexaphyrins(1.1.1.1.1.1). They showed significant changes in the absorption and emission spectra with deprotonation, and returned to the initial state with protonation. Through NMR measurements and single crystal X-ray diffraction analysis, we found that the 5,20-bis(α-oligothienyl) substituted hexaphyrins, which possess acyclic, helical electronic networks involving oligothienyl chains in dumbbell conformations (type-I) in a neutral form, underwent effective deprotonation upon treatment with tetrabutylammonium fluoride (TBAF) to generate the corresponding dianions, which display cyclic electronic networks with enhanced aromaticity in rectangular conformations (type-II). Our quantum calculation results provide an unambiguous description for the switchable conformation and π-conjugation, which revealed that a deprotonation-induced enhanced aromatic conjugation pathway is involved in the switchable π-electronic network.
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Affiliation(s)
- Juwon Oh
- Spectroscopy Laboratory for Functional π-Electronic Systems , Department of Chemistry , Yonsei University , 50 Yonsei-ro , Seoul 120-749 , Korea .
| | - Hirotaka Mori
- Department of Chemistry , Graduated School of Science , Kyoto University , Sakyo-ku , Kyoto 606-8502 , Japan .
| | - Young Mo Sung
- Spectroscopy Laboratory for Functional π-Electronic Systems , Department of Chemistry , Yonsei University , 50 Yonsei-ro , Seoul 120-749 , Korea .
| | - Woojae Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems , Department of Chemistry , Yonsei University , 50 Yonsei-ro , Seoul 120-749 , Korea .
| | - Atsuhiro Osuka
- Department of Chemistry , Graduated School of Science , Kyoto University , Sakyo-ku , Kyoto 606-8502 , Japan .
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems , Department of Chemistry , Yonsei University , 50 Yonsei-ro , Seoul 120-749 , Korea .
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38
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Naoda K, Mori H, Oh J, Park KH, Kim D, Osuka A. 5,20-Di(pyridin-2-yl)-[28]hexaphyrin(1.1.1.1.1.1): A Stable Hückel Antiaromatic Hexaphyrin Stabilized by Intramolecular Hydrogen Bonding and Protonation-Induced Conformational Twist To Gain Möbius Aromaticity. J Org Chem 2015. [DOI: 10.1021/acs.joc.5b01348] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Koji Naoda
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Hirotaka Mori
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Juwon Oh
- Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Kyu Hyung Park
- Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Dongho Kim
- Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Atsuhiro Osuka
- Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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39
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Wang E, He Z, Zhao E, Meng L, Schütt C, Lam JWY, Sung HHY, Williams ID, Huang X, Herges R, Tang BZ. Aggregation-Induced-Emission-Active Macrocycle Exhibiting Analogous Triply and Singly Twisted Möbius Topologies. Chemistry 2015; 21:11707-11. [DOI: 10.1002/chem.201502224] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Indexed: 12/19/2022]
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40
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Pawlicki M, Latos-Grażyński L. Aromaticity Switching in Porphyrinoids. Chem Asian J 2015; 10:1438-51. [DOI: 10.1002/asia.201500170] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Miłosz Pawlicki
- Department of Chemistry; University of Wrocław; F. Joliot-Curie 14 50383 Wrocław
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41
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Mori H, Suzuki M, Kim W, Lim JM, Kim D, Osuka A. 5,20-Bis(α-oligothienyl)-substituted [26]hexaphyrins possessing electronic circuits strongly perturbed by meso-oligothienyl substituents. Chem Sci 2015; 6:1696-1700. [PMID: 28717451 PMCID: PMC5501004 DOI: 10.1039/c4sc03394a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 11/30/2014] [Indexed: 11/29/2022] Open
Abstract
A series of [26]hexaphyrins(1.1.1.1.1.1) bearing two α-oligothienyl substituents at 5,20-positions have been synthesised and are shown to have a dumbbell hexaphyrin conformation, to which the α-oligothienyl groups are linked with small dihedral angles to form an acyclic helix-like conjugated network. While their distinct diatropic ring currents and four reversible reduction waves characteristic of aromatic [26]hexaphyrins indicate that the [26]hexaphyrin aromatic circuits are viable, the absorption spectra and excited state dynamics are significantly perturbed, which becomes increasingly evident with elongation of the oligothienyl substituents. DFT calculations of these hexaphyrins indicated that the LUMO and LUMO + 1 are localised on the hexaphyrin circuit and the HOMO and HOMO - 1 are spread over the acyclic helix-like conjugation network, which can explain the perturbed absorption spectra.
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Affiliation(s)
- Hirotaka Mori
- Department of Chemistry , Graduate School of Science , Kyoto University Sakyo-ku , Kyoto 606-8502 , Japan .
| | - Masaaki Suzuki
- Department of Chemistry , Graduate School of Science , Kyoto University Sakyo-ku , Kyoto 606-8502 , Japan .
| | - Woojae Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry Yonsei University , Seoul 120-749 , Korea .
| | - Jong Min Lim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry Yonsei University , Seoul 120-749 , Korea .
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry Yonsei University , Seoul 120-749 , Korea .
| | - Atsuhiro Osuka
- Department of Chemistry , Graduate School of Science , Kyoto University Sakyo-ku , Kyoto 606-8502 , Japan .
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42
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Higashino T, Soya T, Kim W, Kim D, Osuka A. A Möbius Aromatic [28]Hexaphyrin Bearing a Diethylamine Group: A Rigid but Smooth Conjugation Circuit. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500099] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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Higashino T, Soya T, Kim W, Kim D, Osuka A. A Möbius Aromatic [28]Hexaphyrin Bearing a Diethylamine Group: A Rigid but Smooth Conjugation Circuit. Angew Chem Int Ed Engl 2015; 54:5456-9. [DOI: 10.1002/anie.201500099] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Indexed: 11/12/2022]
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44
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Szyszko B, Latos-Grażyński L. Core chemistry and skeletal rearrangements of porphyrinoids and metalloporphyrinoids. Chem Soc Rev 2015; 44:3588-616. [DOI: 10.1039/c4cs00398e] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Porphyrin core alteration allows for the exploration of porphyrin-like or porphyrin-unlike coordination chemistry and provides an insight into reactions inside particularly shaped macrocyclic architecture including metal-mediated structural transformations.
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45
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Möbius K, Plato M, Klihm G, Laurich C, Savitsky A, Lubitz W, Szyszko B, Stępień M, Latos-Grażyński L. Möbius–Hückel topology switching in an expanded porphyrin cation radical as studied by EPR and ENDOR spectroscopy. Phys Chem Chem Phys 2015; 17:6644-52. [DOI: 10.1039/c4cp05745g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The symmetry of the arrangement of objects has fascinated philosophers, artists and scientists for a long time, and still does.
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Affiliation(s)
- Klaus Möbius
- Freie Universität Berlin
- Fachbereich Physik
- 14195 Berlin
- Germany
- Max Planck Institut für Chemische Energiekonversion
| | - Martin Plato
- Freie Universität Berlin
- Fachbereich Physik
- 14195 Berlin
- Germany
| | - Gudrun Klihm
- Max Planck Institut für Chemische Energiekonversion
- 45470 Mülheim (Ruhr)
- Germany
| | - Christoph Laurich
- Max Planck Institut für Chemische Energiekonversion
- 45470 Mülheim (Ruhr)
- Germany
| | - Anton Savitsky
- Max Planck Institut für Chemische Energiekonversion
- 45470 Mülheim (Ruhr)
- Germany
| | - Wolfgang Lubitz
- Max Planck Institut für Chemische Energiekonversion
- 45470 Mülheim (Ruhr)
- Germany
| | | | - Marcin Stępień
- Wydział Chemii
- Uniwersytet Wrocławski
- 50-383 Wrocław
- Poland
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46
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Yoneda T, Sung YM, Lim JM, Kim D, Osuka A. PdIIComplexes of [44]- and [46]Decaphyrins: The Largest Hückel Aromatic and Antiaromatic, and Möbius Aromatic Macrocycles. Angew Chem Int Ed Engl 2014; 53:13169-73. [DOI: 10.1002/anie.201408506] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Indexed: 11/12/2022]
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47
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Yoneda T, Sung YM, Lim JM, Kim D, Osuka A. PdIIComplexes of [44]- and [46]Decaphyrins: The Largest Hückel Aromatic and Antiaromatic, and Möbius Aromatic Macrocycles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408506] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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48
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49
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Rath H, Mallick A, Ghosh T, Kalita A. Aromatic fused heterocyclic [22] macrocycles with NIR absorption. Chem Commun (Camb) 2014; 50:9094-6. [DOI: 10.1039/c4cc02749c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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50
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Schaller GR, Topić F, Rissanen K, Okamoto Y, Shen J, Herges R. Design and synthesis of the first triply twisted Möbius annulene. Nat Chem 2014; 6:608-13. [PMID: 24950331 DOI: 10.1038/nchem.1955] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 04/11/2014] [Indexed: 12/29/2022]
Abstract
As long as 50 years ago theoretical calculations predicted that Möbius annulenes with only one π surface and one edge would exhibit peculiar electronic properties and violate the Hückel rules. Numerous synthetic attempts notwithstanding, the first singly twisted Möbius annulene was not prepared until 2003. Here we present a general, rational strategy to synthesize triply or even more highly twisted cyclic π systems. We apply this strategy to the preparation of a triply twisted [24]dehydroannulene, the structure of which was confirmed by X-ray analysis. Our strategy is based on the topological transformation of 'twist' into 'writhe'. The advantage is twofold: the product exhibits a lower degree of strain and precursors can be designed that inherently include the writhe, which, after cyclization, ends up in the Möbius product. With our strategy, triply twisted systems are easier to prepare than their singly twisted counterparts.
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Affiliation(s)
- Gaston R Schaller
- Institute for Organic Chemistry, University of Kiel, Otto-Hahn Platz 4, 24098 Kiel, Germany
| | - Filip Topić
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, PO Box 35, 40014 Jyväskylä, Finland
| | - Kari Rissanen
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, PO Box 35, 40014 Jyväskylä, Finland
| | - Yoshio Okamoto
- Nagoya University, 1E Miyahigashi-cho, Showa-ku, Nagoya 466-0804, Japan
| | - Jun Shen
- College of Materials Science and Chemical Engineering, Harbin Engineering University, 145 Nantong Street, Harbin 150001, China
| | - Rainer Herges
- Institute for Organic Chemistry, University of Kiel, Otto-Hahn Platz 4, 24098 Kiel, Germany
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