1
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Vatsadze SZ, Maximov AL, Bukhtiyarov VI. Supramolecular Effects and Systems in Catalysis. A Review. DOKLADY CHEMISTRY 2022. [DOI: 10.1134/s0012500822010013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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2
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Gramage-Doria R, Abuhafez N, Perennes A. Mimicking Enzymes: Taking Advantage of the Substrate-Recognition Properties of Metalloporphyrins in Supramolecular Catalysis. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1729-9223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractThe present review describes the most relevant advances dealing with supramolecular catalysis in which metalloporphyrins are employed as substrate-recognition sites in the second coordination sphere of the catalyst. The kinetically labile interaction between metalloporphyrins (typically, those derived from zinc) and nitrogen- or oxygen-containing substrates is energetically comparable to the non-covalent interactions (i.e., hydrogen bonding) found in enzymes enabling substrate preorganization. Much inspired from host–guest phenomena, the catalytic systems described in this account display unique activities, selectivities and action modes that are difficult to reach by applying purely covalent strategies.
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3
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Wu J, Luo Y, Chen L, Sun X, Chen X, Qin S, Feng W, Li X, Yuan L. A host–guest interaction activated Bobbitt oxidant for highly efficient oxidation of alcohols. Chem Commun (Camb) 2022; 58:12867-12870. [DOI: 10.1039/d2cc05027g] [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
Host–guest complexation using hydrogen-bonded macrocycles was found to enable activation of the Bobbitt oxidant reagent, which greatly facilitates the highly efficient oxidation of unactivated primary alcohols.
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Affiliation(s)
- Jinyang Wu
- Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Youran Luo
- Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Lingxuan Chen
- Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xuan Sun
- Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xinnan Chen
- Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Song Qin
- Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Wen Feng
- Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xiaowei Li
- Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Lihua Yuan
- Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University, Chengdu, 610064, China
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4
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Affiliation(s)
- Naoyuki Hisano
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Takehiro Hirao
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Takeharu Haino
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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5
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Ousaka N, Yamamoto S, Iida H, Iwata T, Ito S, Souza R, Hijikata Y, Irle S, Yashima E. Encapsulation of Aromatic Guests in the Bisporphyrin Cavity of a Double-Stranded Spiroborate Helicate: Thermodynamic and Kinetic Studies and the Encapsulation Mechanism. J Org Chem 2021; 86:10501-10516. [PMID: 34282918 DOI: 10.1021/acs.joc.1c01155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A double-stranded spiroborate helicate bearing a bisporphyrin unit in the middle forms an inclusion complex with electron-deficient aromatic guests that are sandwiched between the porphyrins. In the present study, we systematically investigated the effects of size, electron density, and substituents of a series of aromatic guests on inclusion complex formations within the bisporphyrin. The thermodynamic and kinetic behaviors during the guest-encapsulation process were also investigated in detail. The guest-encapsulation abilities in the helicate increased with the increasing core sizes of the electron-deficient aromatic guests and decreased with the increasing bulkiness and number of substituents of the guests. Among the naphthalenediimide derivatives, those with bulky N-substituents at both ends hardly formed an inclusion complex. Instead, they formed a [2]rotaxane-like inclusion complex through the water-mediated dynamic B-O bond cleavage/reformation of the spiroborate groups of the helicate, which enhanced the conformational flexibility of the helicate to enlarge the bisporphyrin cavity and form an inclusion complex. Based on the X-ray crystal structure of a unique pacman-like 1:1 inclusion complex between the helicate and an ammonium cation as well as the molecular dynamics simulation results, a plausible mechanism for the inclusion of a planar aromatic guest within the helicate is also proposed.
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Affiliation(s)
- Naoki Ousaka
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan.,Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Shinya Yamamoto
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Hiroki Iida
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Takuya Iwata
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Shingo Ito
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Rafael Souza
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
| | - Yuh Hijikata
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya 464-8601, Japan
| | - Stephan Irle
- Department of Chemistry, Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya 464-8601, Japan
| | - Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan.,Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
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6
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Li L, Yang L, Li X, Wang J, Liu X, He C. Supramolecular Catalysis of Acyl Transfer within Zinc Porphyrin-Based Metal-Organic Cages. Inorg Chem 2021; 60:8802-8810. [PMID: 34085514 DOI: 10.1021/acs.inorgchem.1c00745] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
To illustrate the supramolecular catalysis process in molecular containers, two porphyrinatozinc(II)-faced cubic cages with different sizes were synthesized and used to catalyze acyl-transfer reactions between N-acetylimidazole (NAI) and various pyridylcarbinol (PC) regioisomers (2-PC, 3-PC, and 4-PC). A systemic investigation of the supramolecular catalysis occurring within these two hosts was performed, in combination with a host-guest binding study and density functional theory calculations. Compared to the reaction in a bulk solvent, the results that the reaction of 2-PC was found to be highly efficient with high rate enhancements (kcat/kuncat = 283 for Zn-1 and 442 for Zn-2), as well as the different efficiencies of the reactions with various ortho-substituted 2-PC substrates and NAI derivates should be attributed to the cages having preconcentrated and preoriented substrates. The same cage displayed different catalytic activities toward different PC regioisomers, which should be mainly attributed to different binding affinities between the respective reactant and product with the cages. Furthermore, control experiments were carried out to learn the effect of varying reactant concentrations and product inhibition. The results all suggested that, besides the confinement effect caused by the inner microenvironment, substrate transfer, including the encapsulation of the reactant and the release of products, should be considered to be a quite important factor in supramolecular catalysis within a molecular container.
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Affiliation(s)
- LiLi Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, P. R. China
| | - Linlin Yang
- Xinxiang Key Laboratory of Forensic Science Evidence, School of Forensic Medicine, Xinxiang Medical University, Xinxiang 453003, P. R. China
| | - Xuezhao Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, P. R. China
| | - Jing Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, P. R. China
| | - Xin Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, P. R. China
| | - Cheng He
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, P. R. China
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7
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Hashimoto M, Kuramochi Y, Ito S, Kinbara Y, Satake A. Metal-templated synthesis of rigid and conformationally restricted cyclic bisporphyrins: specific retention times on a cyanopropyl-modified silica gel column. Org Biomol Chem 2021; 19:3159-3172. [PMID: 33885570 DOI: 10.1039/d1ob00088h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A series of rigid and conformationally restricted cyclic bis(zinc porphyrin)s connected via 2,2'-bipyridine and phthalamide, isophthalamide, or terephthalamide moieties were prepared by metal-templated synthesis. The yields were significantly improved when compared with those obtained under metal-free conditions. In particular, phthalamide and terephthalamide derivatives were obtained only by metal-templated synthesis. Structural analyses and dynamics of the exchange between the conformers in each cyclic porphyrin were examined by NMR spectroscopy. Although the distances between the two zinc porphyrins were extended in the order of phthalamide, isophthalamide, and terephthalamide derivatives, the order of the specific retention of the cyclic porphyrins on cyanopropyl-modified silica gel (CN-MS) chromatography columns varied. Thus, this order was reversed in the isophthalamide and terephthalamide derivatives. Based on the rigid structure of the terephthalamide derivative, the origin of the specific retention on the CN-MS chromatography column was attributed to both the distance and rigidity of the cyclic porphyrins.
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Affiliation(s)
- Masaya Hashimoto
- Department of Chemistry, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
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8
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Pandey AK, Usman M, Rath SP. Hg···Hg···Hg Interaction Stabilizes Unusual Trinuclear Double Sandwich Structure of Mercury(II) Porphyrins. Inorg Chem 2020; 59:12988-12993. [DOI: 10.1021/acs.inorgchem.0c01627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Anjani Kumar Pandey
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Mohammad Usman
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Sankar Prasad Rath
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
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9
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Alcântara AFP, Fontana LA, Almeida MP, Rigolin VH, Ribeiro MA, Barros WP, Megiatto JD. Control over the Redox Cooperative Mechanism of Radical Carbene Transfer Reactions for the Efficient Active‐Metal‐Template Synthesis of [2]Rotaxanes. Chemistry 2020; 26:7808-7822. [DOI: 10.1002/chem.201905602] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Indexed: 02/01/2023]
Affiliation(s)
- Arthur F. P. Alcântara
- Institute of ChemistryUniversity of Campinas (UNICAMP) PO Box 6154 13083-970 Campinas Brazil
- Instituto Federal do Sertão Pernambucano Estrada do Tamboril 56200-000 Ouricuri Brazil
| | - Liniquer A. Fontana
- Institute of ChemistryUniversity of Campinas (UNICAMP) PO Box 6154 13083-970 Campinas Brazil
| | - Marlon P. Almeida
- Institute of ChemistryUniversity of Campinas (UNICAMP) PO Box 6154 13083-970 Campinas Brazil
| | - Vitor H. Rigolin
- Institute of ChemistryUniversity of Campinas (UNICAMP) PO Box 6154 13083-970 Campinas Brazil
| | - Marcos A. Ribeiro
- Departamento de QuímicaUniversidade Federal do Espírito Santo Av. Fernando Ferrari, 514 29075-910 Vitória Brazil
| | - Wdeson P. Barros
- Institute of ChemistryUniversity of Campinas (UNICAMP) PO Box 6154 13083-970 Campinas Brazil
| | - Jackson D. Megiatto
- Institute of ChemistryUniversity of Campinas (UNICAMP) PO Box 6154 13083-970 Campinas Brazil
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10
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Pesce L, Perego C, Grommet AB, Klajn R, Pavan GM. Molecular Factors Controlling the Isomerization of Azobenzenes in the Cavity of a Flexible Coordination Cage. J Am Chem Soc 2020; 142:9792-9802. [PMID: 32353237 PMCID: PMC7644116 DOI: 10.1021/jacs.0c03444] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
![]()
Photoswitchable
molecules are employed for many applications, from
the development of active materials to the design of stimuli-responsive
molecular systems and light-powered molecular machines. To fully exploit
their potential, we must learn ways to control the mechanism and kinetics
of their photoinduced isomerization. One possible strategy involves
confinement of photoresponsive switches such as azobenzenes or spiropyrans
within crowded molecular environments, which may allow control over
their light-induced conversion. However, the molecular factors that
influence and control the switching process under realistic conditions
and within dynamic molecular regimes often remain difficult to ascertain.
As a case study, here we have employed molecular models to probe the
isomerization of azobenzene guests within a Pd(II)-based coordination
cage host in water. Atomistic molecular dynamics and metadynamics
simulations allow us to characterize the flexibility of the cage in
the solvent, the (rare) guest encapsulation and release events, and
the relative probability/kinetics of light-induced isomerization of
azobenzene analogues in these host–guest systems. In this way,
we can reconstruct the mechanism of azobenzene switching inside the
cage cavity and explore key molecular factors that may control this
event. We obtain a molecular-level insight on the effects of crowding
and host–guest interactions on azobenzene isomerization. The
detailed picture elucidated by this study may enable the rational
design of photoswitchable systems whose reactivity can be controlled
via host–guest interactions.
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Affiliation(s)
- Luca Pesce
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, Via Cantonale 2c, CH-6928 Manno, Switzerland
| | - Claudio Perego
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, Via Cantonale 2c, CH-6928 Manno, Switzerland
| | - Angela B Grommet
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Giovanni M Pavan
- Department of Innovative Technologies, University of Applied Sciences and Arts of Southern Switzerland, Galleria 2, Via Cantonale 2c, CH-6928 Manno, Switzerland.,Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy
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11
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Ikumura Y, Habuka Y, Sakai S, Shinohara T, Yuge H, Rzeznicka II, Hori A. Enhanced and Heteromolecular Guest Encapsulation in Nonporous Crystals of a Perfluorinated Triketonato Dinuclear Copper Complex. Chemistry 2020; 26:5051-5060. [PMID: 32026510 DOI: 10.1002/chem.201905740] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/24/2020] [Indexed: 01/03/2023]
Abstract
The flexible host framework of a perfluorinated mononuclear copper complex, [Cu(L1 )2 ] (1, HL1 =3-hydroxy-1,3-bis(pentafluorophenyl)-2-propen-1-one), with a CuO4 core reversibly encapsulated several organic guest molecules through electrostatic interactions in its crystals. Hence, the corresponding dinuclear complex, [Cu2 (L2 )2 ] (2, H2 L2 =1,5-dihydroxy-1,5-bis(pentafluorophenyl)-1,4-pentadien-3-one), was prepared to enhance guest recognition and the ability to separate molecular mixtures. Complex 2 comprises a Cu2 O6 core and four pentafluorophenyl groups. In crystal 2, cavities are formed on the axial sites of the metal core that are surrounded by pentafluorophenyl groups. The crystal of 2 encapsulates various guest molecules, that is, benzene (3), toluene (4), xylene (5), mesitylene (6), durene (7), and anisole (8). X-ray crystallographic and thermogravimetric (TG) studies show that three guest molecules are present in the crystal cavities. The number of guest molecules found in complex 2 was higher than that in complex 1, for example, (2)3 ⋅(6)10 >1⋅(6)2 , (2)2 ⋅(7)7 >1⋅7, or 2⋅(8)3 >1⋅(8)2 . Naphthalene (9), was encapsulated in 2 to give 2⋅(9)3 , but not in 1. In the crystal of complex 2, heteromolecular guest encapsulation was confirmed, designated as 2⋅(3)2 ⋅9. TG analysis indicates that the thermal stability of the guest-included crystals of 2 is higher than that of 1.
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Affiliation(s)
- Yoshinori Ikumura
- Graduate School of Engineering and Science, Shibaura Institute of Technology, Fukasaku 307, Minuma-ku, Saitama-shi, Saitama, 337-8570, Japan
| | - Yusuke Habuka
- Graduate School of Engineering and Science, Shibaura Institute of Technology, Fukasaku 307, Minuma-ku, Saitama-shi, Saitama, 337-8570, Japan
| | - Shunichiro Sakai
- Department of Chemistry, School of Science, Kitasato University, Kitasato 1-15-1, Minami-ku, Sagamihara-shi, Kanagawa, 252-0373, Japan
| | - Takanori Shinohara
- Department of Chemistry, School of Science, Kitasato University, Kitasato 1-15-1, Minami-ku, Sagamihara-shi, Kanagawa, 252-0373, Japan
| | - Hidetaka Yuge
- Department of Chemistry, School of Science, Kitasato University, Kitasato 1-15-1, Minami-ku, Sagamihara-shi, Kanagawa, 252-0373, Japan
| | - Izabela I Rzeznicka
- Graduate School of Engineering and Science, Shibaura Institute of Technology, Fukasaku 307, Minuma-ku, Saitama-shi, Saitama, 337-8570, Japan
| | - Akiko Hori
- Graduate School of Engineering and Science, Shibaura Institute of Technology, Fukasaku 307, Minuma-ku, Saitama-shi, Saitama, 337-8570, Japan
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12
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Cyclic metalloporphyrin dimers: Conformational flexibility, applications and future prospects. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213117] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Yamashita K, Kuramochi N, Pham Qui Van H, Furutani K, Ogawa T, Sugiura K. Efficient Synthesis of Arylenedioxy‐Bridged Porphyrin Dimers through Catalyst‐Free Nucleophilic Aromatic Substitution. Chempluschem 2020. [DOI: 10.1002/cplu.201900670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ken‐ichi Yamashita
- Department of Chemistry Graduate School of Science and Engineering Tokyo Metropolitan University Minami-Osawa, Hachioji Tokyo 192-0397 Japan
- Department of Chemistry Graduate School of Science Osaka University Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Narumi Kuramochi
- Department of Chemistry Graduate School of Science and Engineering Tokyo Metropolitan University Minami-Osawa, Hachioji Tokyo 192-0397 Japan
| | - Hang Pham Qui Van
- Department of Chemistry Graduate School of Science and Engineering Tokyo Metropolitan University Minami-Osawa, Hachioji Tokyo 192-0397 Japan
| | - Kazuhiro Furutani
- Department of Chemistry Graduate School of Science Osaka University Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Takuji Ogawa
- Department of Chemistry Graduate School of Science Osaka University Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Ken‐ichi Sugiura
- Department of Chemistry Graduate School of Science and Engineering Tokyo Metropolitan University Minami-Osawa, Hachioji Tokyo 192-0397 Japan
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Mondal P, Banerjee S, Rath SP. Controlling the Photophysics of Aromatic Guests Using a Cyclic Porphyrin Dimer: Synthesis, Structure, and Encapsulation‐Mediated “ON‐OFF” Switch. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900639] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Pritam Mondal
- Department of Chemistry Indian Institute of Technology Kanpur 208016 Kanpur India
| | - Sayantani Banerjee
- Department of Chemistry Indian Institute of Technology Kanpur 208016 Kanpur India
| | - Sankar Prasad Rath
- Department of Chemistry Indian Institute of Technology Kanpur 208016 Kanpur India
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15
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Singh AK, Usman M, Sciortino G, Garribba E, Rath SP. Through‐Space Spin Coupling in a Silver(II) Porphyrin Dimer upon Stepwise Oxidations: Ag
II
⋅⋅⋅Ag
II
, Ag
II
⋅⋅⋅Ag
III
, and Ag
III
⋅⋅⋅Ag
III
Metallophilic Interactions. Chemistry 2019; 25:10098-10110. [DOI: 10.1002/chem.201901731] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 05/17/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Akhil Kumar Singh
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur 208016 India
| | - Mohammad Usman
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur 208016 India
| | - Giuseppe Sciortino
- Dipartimento di Chimica e FarmaciaUniversità di Sassari Via Vienna 2 07100 Sassari Italy
- Departament de QuímicaUniversitat Autònoma de Barcelona 08193 Cerdanyola del Vallés Barcelona Spain
| | - Eugenio Garribba
- Dipartimento di Chimica e FarmaciaUniversità di Sassari Via Vienna 2 07100 Sassari Italy
| | - Sankar Prasad Rath
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur 208016 India
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16
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Tchoń D, Makal A. Structure and piezochromism of pyrene-1-carbaldehyde at high pressure. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2019; 75:343-353. [PMID: 32830656 DOI: 10.1107/s2052520619003354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Accepted: 03/08/2019] [Indexed: 06/11/2023]
Abstract
The crystal structure of pyrene-1-carbaldehyde (PA), a model polyaromatic hydrocarbon, highly luminescent in the solid state and crystallizing in the triclinic system, has been re-determined at several pressures ranging from atmospheric up to 3 GPa using a diamond anvil cell. A `multi-crystal' approach was used in crystal structure determination, significantly improving completeness of X-ray diffraction data attainable for such a low-symmetry system. The crystal structure consists of infinite π-stacks of PA molecules with discernible dimers, which resemble aggregates formed by pyrene derivatives in solution as well as in the solid state. A series of measurements showed that the average inter-planar distance between individual molecules within π-stacks decreases with pressure in the investigated range. This results in piezochromic properties of PA: a significant sample color change as well as a red-shift of fluorescence with pressure, as studied with UV-vis spectroscopy. Periodic DFT calculations allowed us to relate the variations in the crystal structure with pressure to the changes in the electronic structure of this material.
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Affiliation(s)
- Daniel Tchoń
- Biological and Chemical Research Centre, Department of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
| | - Anna Makal
- Biological and Chemical Research Centre, Department of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
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17
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Modulation of iron spin in ethane-bridged diiron(III) porphyrin dimer: anion dependent spin state switching. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1488-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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18
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Tang JH, Sun Y, Gong ZL, Li ZY, Zhou Z, Wang H, Li X, Saha ML, Zhong YW, Stang PJ. Temperature-Responsive Fluorescent Organoplatinum(II) Metallacycles. J Am Chem Soc 2018; 140:7723-7729. [PMID: 29782153 PMCID: PMC6385588 DOI: 10.1021/jacs.8b04452] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The synthesis, characterization, and temperature-responsive properties of two fluorescent organoplatinum(II) metallacycles are reported. Metallacycles M1 and M2 were prepared via the coordination-driven self-assembly of a 120° triarylamine ligand L1 and a 120° diplatinum(II) acceptor Pt-1 or 180° diplatinum(II) acceptor Pt-2, respectively. M1 and M2 are hexagonal metallacycles, comprising of three or six freely rotating anthracene pendants on their periphery, respectively. In response to the temperature variation between -20 and 60 °C, the ligand displays irregular emission changes, whereas both metallacycles show reversible absorption and emission spectral changes in THF. The changes in their green emission intensity also exhibit a linear correlation with the temperature variation, with an average sensitivity of -0.67% and -0.77% per °C for M1 and M2, respectively. Furthermore, in coordinating solvents, such as DMF and CH3CN, M1 and M2 show different behaviors: in the lower temperature range, i.e., below 30 °C, their spectral changes are similar to those observed in THF; however, at a higher temperature the metallacycles were presumably destroyed by the solvents and displayed ratiometric fluorescent responses, including a cyan emission of the ligand L1.
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Affiliation(s)
- Jian-Hong Tang
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
| | - Yue Sun
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
| | - Zhong-Liang Gong
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhong-Yu Li
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
| | - Zhixuan Zhou
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
| | - Heng Wang
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Xiaopeng Li
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Manik Lal Saha
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
| | - Yu-Wu Zhong
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Peter J. Stang
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
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19
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Yamasaki Y, Shio H, Amimoto T, Sekiya R, Haino T. Majority-Rules Effect and Allostery in Molecular Recognition of Calix[4]arene-Based Triple-Stranded Metallohelicates. Chemistry 2018; 24:8558-8568. [DOI: 10.1002/chem.201800997] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/09/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Yutaro Yamasaki
- Department of Chemistry, Graduate School of Science; Hiroshima University; 1-3-1 Kagamiyama Higashi- Hiroshima 739-8526 Japan
| | - Hidemi Shio
- Department of Chemistry, Graduate School of Science; Hiroshima University; 1-3-1 Kagamiyama Higashi- Hiroshima 739-8526 Japan
| | - Tomoko Amimoto
- Natural Science Center for Basic Research and Development; Hiroshima University; 1-3-1 Kagamiyama Higashi- Hiroshima 739-8526 Japan
| | - Ryo Sekiya
- Department of Chemistry, Graduate School of Science; Hiroshima University; 1-3-1 Kagamiyama Higashi- Hiroshima 739-8526 Japan
| | - Takeharu Haino
- Department of Chemistry, Graduate School of Science; Hiroshima University; 1-3-1 Kagamiyama Higashi- Hiroshima 739-8526 Japan
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20
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Abstract
Efficient molecular switching in confined spaces is critical for the successful development of artificial molecular machines. However, molecular switching events often entail large structural changes and therefore require conformational freedom, which is typically limited under confinement conditions. Here, we investigated the behavior of azobenzene-the key building block of light-controlled molecular machines-in a confined environment that is flexible and can adapt its shape to that of the bound guest. To this end, we encapsulated several structurally diverse azobenzenes within the cavity of a flexible, water-soluble coordination cage, and investigated their light-responsive behavior. Using UV/Vis absorption spectroscopy and a combination of NMR methods, we showed that each of the encapsulated azobenzenes exhibited distinct switching properties. An azobenzene forming a 1:1 host-guest inclusion complex could be efficiently photoisomerized in a reversible fashion. In contrast, successful switching in inclusion complexes incorporating two azobenzene guests was dependent on the availability of free cages in the system, and it involved reversible trafficking of azobenzene between the cages. In the absence of extra cages, photoswitching was either suppressed or it involved expulsion of azobenzene from the cage and consequently its precipitation from the solution. This finding was utilized to develop an information storage medium in which messages could be written and erased in a reversible fashion using light.
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21
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Samanta D, Galaktionova D, Gemen J, Shimon LJW, Diskin-Posner Y, Avram L, Král P, Klajn R. Reversible chromism of spiropyran in the cavity of a flexible coordination cage. Nat Commun 2018; 9:641. [PMID: 29440687 PMCID: PMC5811438 DOI: 10.1038/s41467-017-02715-6] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 12/20/2017] [Indexed: 11/08/2022] Open
Abstract
Confining molecules to volumes only slightly larger than the molecules themselves can profoundly alter their properties. Molecular switches-entities that can be toggled between two or more forms upon exposure to an external stimulus-often require conformational freedom to isomerize. Therefore, placing these switches in confined spaces can render them non-operational. To preserve the switchability of these species under confinement, we work with a water-soluble coordination cage that is flexible enough to adapt its shape to the conformation of the encapsulated guest. We show that owing to its flexibility, the cage is not only capable of accommodating-and solubilizing in water-several light-responsive spiropyran-based molecular switches, but, more importantly, it also provides an environment suitable for the efficient, reversible photoisomerization of the bound guests. Our findings pave the way towards studying various molecular switching processes in confined environments.
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Affiliation(s)
- Dipak Samanta
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Daria Galaktionova
- Department of Chemistry, University of Illinois at Chicago, Chicago, IL, 60607, USA
| | - Julius Gemen
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Linda J W Shimon
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Yael Diskin-Posner
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Liat Avram
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Petr Král
- Department of Chemistry, University of Illinois at Chicago, Chicago, IL, 60607, USA
- Department of Physics, University of Illinois at Chicago, Chicago, IL, 60607, USA
- Department of Biopharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL, 60607, USA
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel.
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22
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Naseer MM, Bauzá A, Alnasr H, Jurkschat K, Frontera A. Lone pair–π vs. σ-hole–π interactions in bromine head-containing oxacalix[2]arene[2]triazines. CrystEngComm 2018. [DOI: 10.1039/c8ce00666k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New bromine head-containing oxacalix[2]arene[2]triazines were synthesized. Owing to the bromine head and complementary V-shaped cavity, the solid state structure showed an intriguing and unique 1D-supramolecular chain-like self-assembly.
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Affiliation(s)
| | - Antonio Bauzá
- Departament de Quimica
- Universitat de les Illes Balears
- 07122 Palma
- Spain
| | - Hazem Alnasr
- Lehrstuhl für Anorganische Chemie II
- Technische Universität Dortmund
- D-44221 Dortmund
- Germany
| | - Klaus Jurkschat
- Lehrstuhl für Anorganische Chemie II
- Technische Universität Dortmund
- D-44221 Dortmund
- Germany
| | - Antonio Frontera
- Departament de Quimica
- Universitat de les Illes Balears
- 07122 Palma
- Spain
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23
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Zwoliński KM, Sieroń L, Eilmes J. One-flask synthesis of dibenzotetraaza[14]annulene cyclic congeners bearing buta-1,3-diyne bridges. Org Chem Front 2018. [DOI: 10.1039/c7qo00821j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glaser–Hay and Glaser–Eglinton coupling conditions were applied to the direct synthesis of a cyclic strapped ligand and its corresponding dimer in 44% and 30% yields respectively.
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Affiliation(s)
- K. M. Zwoliński
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Krakow
- Poland
| | - L. Sieroń
- Institute of General and Ecological Chemistry
- Lodz University of Technology
- 90-924 Lodz
- Poland
| | - J. Eilmes
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Krakow
- Poland
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24
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Lai D, Khan FST, Rath SP. Multiheme proteins: effect of heme–heme interactions. Dalton Trans 2018; 47:14388-14401. [DOI: 10.1039/c8dt00518d] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
This Frontier illustrates a brief personal account on the effect of heme–heme interactions in dihemes which thereby discloses some of the evolutionary design principles involved in multiheme proteins for their diverse structures and functions.
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Affiliation(s)
- Dipti Lai
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur-208016
- India
| | | | - Sankar Prasad Rath
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur-208016
- India
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25
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Denis PA. Theoretical characterization of supramolecular complexes formed by fullerenes and dimeric porphyrins. NEW J CHEM 2018. [DOI: 10.1039/c8nj01467a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Intramolecular stacking is very strong in dimeric porphyrins. However, in solution they are able to inhibit folding and can trap fullerenes with very high association constants. Diabatic interaction energies can be a useful approach to evaluate the strength of porphyrin/fullerene supramolecular complexes.
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Affiliation(s)
- Pablo A. Denis
- Computational Nanotechnology
- DETEMA
- Facultad de Química
- UDELAR
- CC 1157
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26
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Mondal P, Rath SP. A Tunable Cyclic Container: Guest-Induced Conformational Switching, Efficient Guest Exchange, and Selective Isolation of C70
from a Fullerene Mixture. Chem Asian J 2017; 12:1824-1835. [DOI: 10.1002/asia.201700600] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Pritam Mondal
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur- 208016 India
| | - Sankar Prasad Rath
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur- 208016 India
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