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Nandi RP, Chandra B, Ghosh S, Sarma SP, Geremia S, Hickey N, Thilagar P. Pyrrole βC-B-N Fused Porphyrins: Molecular Structures and Opto-Electrochemical Studies. Chemistry 2024; 30:e202304219. [PMID: 38155424 DOI: 10.1002/chem.202304219] [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: 12/19/2023] [Accepted: 12/28/2023] [Indexed: 12/30/2023]
Abstract
Herein, we report the design, synthesis, structure, and electrochemical study of doubly βC-B-N fused Ni(II) porphyrins (1-trans, 1-cis, 2-trans, and 2-cis). These compounds have been synthesized from A2B2 type dipyridyl Ni(II) porphyrins (Ar=Ph for 1 a; Ar=C6F5 for 2 a) via Lewis base-directed electrophilic aromatic borylation reactions. The solution state structures of these compounds have been established using 1H NMR, 11B NMR, 1H-1H COSY, 1H-13C HSQC, and 19F-13C HSQC NMR techniques. Single crystal X-ray analysis have revealed that 1-trans, 1-cis, and 2-trans adopt ruffled conformations, with alternate meso-carbons on the opposite sides of the mean porphyrin plane. The Soret bands in the absorption spectra of the B-N fused molecules are ~40 nm redshifted compared to unfused Ni(II) porphyrin precursors. The B-N fusion have diminished the redox potential of fused porphyrins. Although 1-trans and 1-cis, show four oxidation processes, 2-trans and 2-cis show only three oxidation processes. DFT studies have revealed that the tetrahedral geometry of the boron has induced a twist in the π-conjugation, which destabilizes the HOMO and stabilizes the LUMO in 1-trans, 1-cis, 2-trans, and 2-cis.
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Affiliation(s)
- Rajendra Prasad Nandi
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, INDIA
| | - Brijesh Chandra
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, INDIA
| | - Subhajit Ghosh
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, INDIA
| | - Siddhartha P Sarma
- Molecular Biophysics Unit, Division of Biological Sciences, Indian Institute of Science, Bangalore, 560012, INDIA
| | - Silvano Geremia
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, via L. Giorgieri 1, 34127, Trieste, ITALY
| | - Neal Hickey
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, via L. Giorgieri 1, 34127, Trieste, ITALY
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, INDIA
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2
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Tsurusaki A, Tahara S, Nakamura M, Matsumoto H, Kamikawa K. Synthesis, Structures, and Properties of π-Extended Phosphindolizine Derivatives. Chemistry 2023; 29:e202203321. [PMID: 36539376 DOI: 10.1002/chem.202203321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
Dibenzo[b,g]phosphindolizine oxide and three types of benzo[e]naphthophosphindolizine oxides have been synthesized by the ring-closing metathesis of benzo[b]phosphole oxide and naphthophosphole oxides with two olefin tethers. Their molecular structures and properties were revealed by X-ray crystallographic analysis, UV-vis spectroscopy, and electrochemical analysis. The number and position of the benzene rings were found to alter the structural geometry and the HOMO/LUMO energy levels, and their effects were investigated by theoretical calculations. Among the phosphindolizine oxide derivatives investigated, only benzo[e]naphtho[2,3-b]phosphindolizine oxide with the naphthalene ring fused at 2,3-positions showed weak yellow fluorescence with a large Stokes shift.
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Affiliation(s)
- Akihiro Tsurusaki
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai, Osaka, 599-8531, Japan
| | - Sana Tahara
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai, Osaka, 599-8531, Japan
| | - Makoto Nakamura
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai, Osaka, 599-8531, Japan
| | - Hiroyo Matsumoto
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai, Osaka, 599-8531, Japan
| | - Ken Kamikawa
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai, Osaka, 599-8531, Japan
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3
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Škoch K, Daniliuc CG, Müller M, Grimme S, Kehr G, Erker G. Stereochemical Behavior of Pairs of P‐stereogenic Phosphanyl Groups at the Dimethylxanthene Backbone. Chemistry 2022; 28:e202200248. [DOI: 10.1002/chem.202200248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Karel Škoch
- Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
- Current address: Institute of Inorganic Chemistry of the Czech Academy of Sciences Husinec 250 68 Husinec-Řež (Czech Republic
| | | | - Marcel Müller
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie Universität Bonn Beringstraβe 4 53115 Bonn Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie Universität Bonn Beringstraβe 4 53115 Bonn Germany
| | - Gerald Kehr
- Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Gerhard Erker
- Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
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4
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Li C, Wang Y, Wu S, Zhuang W, Huang Z, Zhou L, Li Y, Chen M, You J. Direct [4 + 2] Cycloaddition to Isoquinoline-Fused Porphyrins for Near-Infrared Photodynamic Anticancer Agents. Org Lett 2022; 24:175-180. [PMID: 34889619 DOI: 10.1021/acs.orglett.1c03804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The synthesis of efficient porphyrin-based photosensitizers with intense near-infrared (NIR) absorption is in high demand for photodynamic therapy (PDT) but remains a challenging task. Herein we show the construction of a type of isoquinoline-fused porphyrins 3 and 4 with an impressive NIR-absorbing capacity. In light of the extraordinary singlet oxygen generation capabilities of 3 upon NIR irradiation, the representative nanoparticles (3a-NPs) assembled show excellent tumoricidal behavior with good biocompatibility in the phototherapeutic window (650-850 nm).
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Affiliation(s)
- Chengming Li
- Laboratory of Heart Valve Disease, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu 610041, P. R. China
| | - Yinchan Wang
- Core Facility of West China Hospital, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu 610041, P. R. China
| | - Sisi Wu
- Core Facility of West China Hospital, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu 610041, P. R. China
| | - Weihua Zhuang
- Laboratory of Heart Valve Disease, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu 610041, P. R. China
| | - Zhenmei Huang
- Key Laboratory of Green Chemistry and Technology of the Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Linsen Zhou
- Institute of Materials, Chinese Academy of Engineering Physics, Jiangyou 621908, P. R. China
| | - Yinggang Li
- Laboratory of Stem Cell Biology, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu 610041, P. R. China
| | - Mao Chen
- Laboratory of Heart Valve Disease, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu 610041, P. R. China
- Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu 610041, P. R. China
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of the Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
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5
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Borissov A, Maurya YK, Moshniaha L, Wong WS, Żyła-Karwowska M, Stępień M. Recent Advances in Heterocyclic Nanographenes and Other Polycyclic Heteroaromatic Compounds. Chem Rev 2022; 122:565-788. [PMID: 34850633 PMCID: PMC8759089 DOI: 10.1021/acs.chemrev.1c00449] [Citation(s) in RCA: 224] [Impact Index Per Article: 112.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Indexed: 12/21/2022]
Abstract
This review surveys recent progress in the chemistry of polycyclic heteroaromatic molecules with a focus on structural diversity and synthetic methodology. The article covers literature published during the period of 2016-2020, providing an update to our first review of this topic (Chem. Rev. 2017, 117 (4), 3479-3716).
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Affiliation(s)
| | | | | | | | | | - Marcin Stępień
- Wydział Chemii, Uniwersytet
Wrocławski, ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
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6
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Arp FF, Ashirov R, Bhuvanesh N, Blümel J. Di(hydroperoxy)adamantane adducts: synthesis, characterization and application as oxidizers for the direct esterification of aldehydes. Dalton Trans 2021; 50:15296-15309. [PMID: 34636381 DOI: 10.1039/d1dt03243g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The di(hydroperoxy)adamantane adducts of water (1) and phosphine oxides p-Tol3PO·(HOO)2C(C9H14) (2), o-Tol3PO·(HOO)2C(C9H14) (3), and Cy3PO·(HOO)2C(C9H14) (4), as well as a CH2Cl2 adduct of a phosphole oxide dimer (8), have been created and investigated by multinuclear NMR spectroscopy, and by Raman and IR spectroscopy. The single crystal X-ray structures for 1-4 and 8 are reported. The IR and 31P NMR data are in accordance with strong hydrogen bonding of the di(hydroperoxy)adamantane adducts. The Raman ν(O-O) stretching bands of 1-4 prove that the peroxo groups are present in the solids. Selected di(hydroperoxy)alkane adducts, in combination with AlCl3 as catalyst, have been applied for the direct oxidative esterification of n-nonyl aldehyde, benzaldehyde, p-methylbenzaldehyde, p-bromobenzaldehyde, and o-hydroxybenzaldehyde to the corresponding methyl esters. The esterification takes place in an inert atmosphere, under anhydrous and oxygen-free conditions, within a time frame of 45 minutes to 5 hours at room temperature. Hereby, two oxygen atoms per adduct assembly are active with respect to the quantitative transformation of the aldehyde into the ester.
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Affiliation(s)
- Fabian F Arp
- Department of Chemistry, Texas A&M University, College Station, TX, 77842-3012, USA.
| | - Rahym Ashirov
- Department of Chemistry, Texas A&M University, College Station, TX, 77842-3012, USA.
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, College Station, TX, 77842-3012, USA.
| | - Janet Blümel
- Department of Chemistry, Texas A&M University, College Station, TX, 77842-3012, USA.
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7
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Škoch K, Daniliuc CG, Kehr G, Ehlert S, Müller M, Grimme S, Erker G. Frustrated Lewis-Pair Neighbors at the Xanthene Framework: Epimerization at Phosphorus and Cooperative Formation of Macrocyclic Adduct Structures. Chemistry 2021; 27:12104-12114. [PMID: 34076908 DOI: 10.1002/chem.202100835] [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: 03/06/2021] [Indexed: 11/07/2022]
Abstract
Attachment of a pair of P-stereogenic mesityl(alkynyl)phosphanyl groups at the 4- and 5-positions of a 9,9-dimethylxanthene framework gave mixtures of the respective rac- and meso-bisphosphanyl diastereoisomers. They slowly epimerized in a thermally induced reaction with Gibbs activation barriers of about 25 kcal mol-1 at room temperature (measured and DFT calculated). The reaction of the meso-mesityl(tert-butylethynyl)phosphanyl derivative with two molar equivalents of Piers' borane [HB(C6 F5 )2 ] led to the formation of the alkylidene-bridged geminal bisphosphane/borane-frustrated Lewis pair system. The compound was obtained enriched (>85 %) in the rac diastereoisomer. With a variety of bifunctional donor substrates, the rac-bis-P/B FLP formed macrocyclic compounds. They were all formally derived from meso-configurated diastereoisomers of the bisphosphanylxanthene backbone.
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Affiliation(s)
- Karel Škoch
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraβe 40, 48149, Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraβe 40, 48149, Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraβe 40, 48149, Münster, Germany
| | - Sebastian Ehlert
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie, Universität Bonn, Beringstraβe 4, 53115, Bonn, Germany
| | - Marcel Müller
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie, Universität Bonn, Beringstraβe 4, 53115, Bonn, Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie, Universität Bonn, Beringstraβe 4, 53115, Bonn, Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraβe 40, 48149, Münster, Germany
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8
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Liu Z, Deng C, Su L, Wang D, Jiang Y, Tsuboi T, Zhang Q. Efficient Intramolecular Charge-Transfer Fluorophores Based on Substituted Triphenylphosphine Donors. Angew Chem Int Ed Engl 2021; 60:15049-15053. [PMID: 33872455 DOI: 10.1002/anie.202103075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/16/2021] [Indexed: 11/11/2022]
Abstract
Triphenylphosphine (TPP)-based luminescent compounds are rarely investigated because of the low photoluminescence quantum yield (PLQY). Here, we demonstrate that introducing steric hindrance groups to the TPP moiety and separating the orbitals involved in the transition can drastically suppress the non-radiative decay induced by structural distortion of TPP in the excited state. High PLQY up to 0.89 as well as thermally activated delayed fluorescence are observed from the intramolecular charge-transfer (ICT) molecules with substituted TPP donors (sTPPs) in doped films. The red organic light-emitting diodes employing these emitters achieve comparable external quantum efficiencies to the control device containing a classical phosphorescent dye, revealing the great potential of the ICT emitters based on electrochemically stable sTPPs.
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Affiliation(s)
- Zhang Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Chao Deng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Liwu Su
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Dan Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yongshi Jiang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Taiju Tsuboi
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Qisheng Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.,State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
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9
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Liu Z, Deng C, Su L, Wang D, Jiang Y, Tsuboi T, Zhang Q. Efficient Intramolecular Charge‐Transfer Fluorophores Based on Substituted Triphenylphosphine Donors. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zhang Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China
| | - Chao Deng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China
| | - Liwu Su
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China
| | - Dan Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China
| | - Yongshi Jiang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China
| | - Taiju Tsuboi
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China
| | - Qisheng Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China
- State Key Laboratory of Clean Energy Utilization Zhejiang University Hangzhou 310027 China
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10
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Urbańska K, Farinone M, Pawlicki M. Changes in porphyrin’s conjugation based on synthetic and post-synthetic modifications. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2019-0081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Porphyrins or more broadly defined porphyrinoids are the structures where the extended π-cloud can be significantly modified by several factors. The broad range of introduced structural motifs has shown a possibility of modification of conjugation by a controlled synthetic approach, leading to expected optical or magnetic behaviour, and also by post-synthetic modifications (i.e. redox or protonation/deprotonation), Both approaches lead to noticeab changes in observed properties but also open a potential for further utilization. Thus, this already constituted big family of macrocyclic structures with specific highly extended π-delocalization shows a significant contribution in several fields from fundamental studies, leading to understanding behaviour of skeletons like that with a substantial influence on biological studies and material science. The presented material focuses on the most significant examples of modifications of porphyrinoids skeleton leading to drastic changes in optical response and magnetic properties. Through the presentation, the focus will be placed on the changes leading to the most red-shifted transition as the parameter indicating extending the π-delocalization. Significantly different magnetic character will be also discussed based on the switching between aromatic/antiaromatic character assigned to macrocyclic structures that will be included.
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Affiliation(s)
- Karolina Urbańska
- Wydział Chemii , Uniwersytet Wrocławski , F. Joliot-Curie 14 , 50-383 Wrocław , Poland
| | - Marco Farinone
- Wydział Chemii , Uniwersytet Wrocławski , F. Joliot-Curie 14 , 50-383 Wrocław , Poland
| | - Miłosz Pawlicki
- Wydział Chemii , Uniwersytet Wrocławski , F. Joliot-Curie 14 , 50-383 Wrocław , Poland
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11
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Osterloh WR, Fang Y, Chaudhri N, Cong L, Sankar M, Kadish KM. Effect of fused indanedione (IND) groups and antipodal β-substituents on electrochemical properties of unsymmetrical metalloporphyrins. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s108842462050039x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The interacting effect of fused indanedione (IND) groups and antipodal Br [Formula: see text]-substituents on the electroreduction of free-base and transition metal tetraphenylporphyrins (TPPs) are elucidated through the use of cyclic voltammetry. A systematic study of the reduction potentials for mono- and di-fused derivatives of MTPP(IND)(R)2 and MTPP(IND)2(R)2 where R = Br or H and M = Cu[Formula: see text], Ni[Formula: see text], Zn[Formula: see text] or H2 is carried out in pyridine containing 0.1 M tetrabutylammonium perchlorate (TBAP) as supporting electrolyte and demonstrates how the overall electrochemical properties of these compounds can be tuned by systematic changes in the number of meso-[Formula: see text]fused IND groups on the molecule and the presence or absence of electron-withdrawing Br [Formula: see text]-substituents. Under these solution conditions, two reversible one-electron reductions are seen for H2TPP, while three reversible reductions are obtained for H2TPP(IND) or H2TPP(IND)Br2 and four for H2TPP(IND)2Br2. Multiple reductions also occur for the other investigated mono- and di-fused metalloporphyrins. Plots of measured [Formula: see text] values for the two ring-centered reductions of compounds in a given series vs. the number of fused IND groups are linear and with slopes varying in magnitude between 15 and 230 mV/IND depending upon the product of the electron transfer (anion radical or dianion), the specific central metal ion and the presence or absence of Br substituents on the pyrrole ring opposite the fused IND group(s). It is anticipated that the information from this study can be used for predicting the reduction potentials for yet to be synthesized compounds where a specific redox reactivity is desired.
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Affiliation(s)
- W. Ryan Osterloh
- Department of Chemistry, University of Houston, Houston, TX, 77204-5003, USA
| | - Yuanyuan Fang
- Department of Chemistry, University of Houston, Houston, TX, 77204-5003, USA
| | - Nivedita Chaudhri
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, India
| | - Lei Cong
- Department of Chemistry, University of Houston, Houston, TX, 77204-5003, USA
| | - Muniappan Sankar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, India
| | - Karl M. Kadish
- Department of Chemistry, University of Houston, Houston, TX, 77204-5003, USA
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12
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Machida T, Iwasa T, Taketsugu T, Sada K, Kokado K. Photoinduced Pyramidal Inversion Behavior of Phosphanes Involved with Aggregation‐Induced Emission Behavior. Chemistry 2020; 26:8028-8034. [DOI: 10.1002/chem.202000264] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 02/27/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Takashi Machida
- Graduate School of Chemical Sciences and Engineering Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
| | - Takeshi Iwasa
- Graduate School of Chemical Sciences and Engineering Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- Department of Chemistry Faculty of Science Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
| | - Tetsuya Taketsugu
- Graduate School of Chemical Sciences and Engineering Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- Department of Chemistry Faculty of Science Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
| | - Kazuki Sada
- Graduate School of Chemical Sciences and Engineering Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- Department of Chemistry Faculty of Science Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
| | - Kenta Kokado
- Graduate School of Chemical Sciences and Engineering Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- Department of Chemistry Faculty of Science Hokkaido University Kita 10 Nishi 8, Kita-ku Sapporo 060-0810 Japan
- JST-PRESTO 4-1-8 Honcho, Kawaguchi Saitama 332-0012 Japan
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13
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Affiliation(s)
- Karolina Urbańska
- Wydział Chemii, Uniwersytet Wrocławski, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Miłosz Pawlicki
- Wydział Chemii, Uniwersytet Wrocławski, F. Joliot-Curie 14, 50-383 Wrocław, Poland
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14
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Affiliation(s)
- Kenichi Kato
- 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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15
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Farinone M, Cybińska J, Pawlicki M. BODIPY-amino acid conjugates – tuning the optical response with a meso-heteroatom. Org Chem Front 2020. [DOI: 10.1039/d0qo00481b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The presence of a heteroatom at the meso-position of BODIPY significantly influences the π-cloud of the main chromophore, modifying the final optical properties.
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Affiliation(s)
- Marco Farinone
- Wydział Chemii
- Uniwersytet Wrocławski
- 50-383 Wrocław
- Poland
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16
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Espinosa Ferao A, García Alcaraz A. Benchmarking the inversion barriers in σ3λ3-phosphorus compounds: a computational study. NEW J CHEM 2020. [DOI: 10.1039/d0nj01237h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Benchmark study of three mechanisms for inversion at phosphorus, including parametric criteria for classification and analysis of factors affecting barriers.
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Affiliation(s)
- Arturo Espinosa Ferao
- Departamento de Química Orgánica
- Facultad de Química
- Campus de Espinardo
- Universidad de Murcia
- 30100 Murcia
| | - Antonio García Alcaraz
- Departamento de Química Orgánica
- Facultad de Química
- Campus de Espinardo
- Universidad de Murcia
- 30100 Murcia
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17
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Stawski W, Kijewska M, Pawlicki M. Multi‐Cation Coordination in Porphyrinoids. Chem Asian J 2019; 15:8-20. [DOI: 10.1002/asia.201901422] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Indexed: 01/21/2023]
Affiliation(s)
- Wojciech Stawski
- Department of ChemistryUniversity of Wrocław F. Joliot-Curie 14 50383 Wrocław Poland
| | - Monika Kijewska
- Department of ChemistryUniversity of Wrocław F. Joliot-Curie 14 50383 Wrocław Poland
| | - Miłosz Pawlicki
- Department of ChemistryUniversity of Wrocław F. Joliot-Curie 14 50383 Wrocław Poland
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18
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Higashino T, Nishimura I, Imahori H. Corrigendum: Near-Infrared Circularly Polarized Light Triggered Enantioselective Photopolymerization by Using Upconversion Nanophosphors. Chemistry 2019; 25:13816-13823. [PMID: 31393036 DOI: 10.1002/chem.201903269] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tomohiro Higashino
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Issei Nishimura
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, 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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19
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Li C, Zhu L, Liang W, Su R, Yin J, Hu Y, Lan Y, Wu D, You J. An unusual [4 + 2] fusion strategy to forge meso-N/ O-heteroarene-fused (quinoidal) porphyrins with intense near-infrared Q-bands. Chem Sci 2019; 10:7274-7280. [PMID: 31588297 PMCID: PMC6686728 DOI: 10.1039/c9sc01596e] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 06/15/2019] [Indexed: 01/04/2023] Open
Abstract
Divergent synthesis of meso-N/O-heteroarene-fused (quinoidal) porphyrins was established via rhodium-catalyzed β-C–H activation/annulation of quinoidal porphyrins with alkynes.
Here we present a divergent synthesis of brand-new types of meso-N/O-heteroarene-fused (quinoidal) porphyrins through Rh-catalyzed β-C–H activation/annulation of 5,15-dioxoporphyrins and dioxime derivatives with alkynes, in which the synthetic disconnections are difficult to access through the commonly used intramolecular cyclization strategy. Using the O-methyl oxime as a traceless oxidizing directing group, the meso-N-embedded pyridine-fused anti-quinoidal porphyrin 3 and pyridinium-fused cation 4 are formed with controllable chemoselectivity and complete anti-selectivity. Replacing the exocyclic oxime with a carbonyl group delivers the pyran-fused porphyrin 5, achieving structural conversion from a quinoidal conformation to a stable porphyrin macrocycle. Further oxidation of the expanded dimer 5ea gives the oxonium 6, which exhibits intense near-infrared (NIR) Q-bands up to 1300 nm. Theoretical studies demonstrate that the incorporation of a heteroatom at the meso-position enables more effective π-extension, resulting in a 22π aromatic (vs. 18π aromatic) character of pyran-fused porphyrins (syn/anti-5aa). Compared with the commercially available methylene blue (MB), syn-5al exhibits a better ability (ΦΔ = 0.61) to sensitize singlet oxygen (1O2) when irradiated with a 680 nm laser beam, and has potential as a photodynamic therapy (PDT) photosensitizer in the body's therapeutic window (650–900 nm).
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Affiliation(s)
- Chengming Li
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , P. R. China .
| | - Lei Zhu
- School of Chemistry and Chemical Engineering , Chongqing Key Laboratory of Theoretical and Computational Chemistry , Chongqing University , Chongqing 400030 , P. R. China
| | - Wenbo Liang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , P. R. China .
| | - Rongchuan Su
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , P. R. China .
| | - Jiangliang Yin
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , P. R. China .
| | - Yanmei Hu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , P. R. China .
| | - Yu Lan
- School of Chemistry and Chemical Engineering , Chongqing Key Laboratory of Theoretical and Computational Chemistry , Chongqing University , Chongqing 400030 , P. R. China
| | - Di Wu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , P. R. China .
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , P. R. China .
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20
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Stawski W, Hurej K, Skonieczny J, Pawlicki M. Organoboron Complexes in Edge-Sharing Macrocycles: The Triphyrin(2.1.1)-Tetraphyrin(1.1.1.1) Hybrid. Angew Chem Int Ed Engl 2019; 58:10946-10950. [PMID: 31141278 DOI: 10.1002/anie.201904819] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Indexed: 01/29/2023]
Abstract
The formation of a precisely designed environment predefined for stabilizing electron-deficient atoms, such as boron(III), is an important approach for optimizing the properties of a chromophore. A triphyrin(2.1.1) motif built on the extended π-system of a tetraphyrin(1.1.1.1) skeleton creates a new coordination environment, with a CNN set of donors confined in a limited space predefined for binding small cations. The entrapment of boron(III) in the triphyrin(2.1.1) sector, with formation of a direct B-C bond, significantly changes the optical response and the global aromatic character of the compound, leading to an extension of the π-delocalisation.
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Affiliation(s)
- Wojciech Stawski
- Department of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50383, Wrocław, Poland
| | - Karolina Hurej
- Department of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50383, Wrocław, Poland
| | - Janusz Skonieczny
- Łukasiewicz Research Network®, PORT, ul. Stabłowicka 147, 54066, Wrocław, Poland
| | - Miłosz Pawlicki
- Department of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50383, Wrocław, Poland
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21
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Stawski W, Hurej K, Skonieczny J, Pawlicki M. Organoboron Complexes in Edge‐Sharing Macrocycles: The Triphyrin(2.1.1)–Tetraphyrin(1.1.1.1) Hybrid. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904819] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Wojciech Stawski
- Department of ChemistryUniversity of Wrocław F. Joliot-Curie 14 50383 Wrocław Poland
| | - Karolina Hurej
- Department of ChemistryUniversity of Wrocław F. Joliot-Curie 14 50383 Wrocław Poland
| | - Janusz Skonieczny
- Łukasiewicz Research Network®, PORT ul. Stabłowicka 147 54066 Wrocław Poland
| | - Miłosz Pawlicki
- Department of ChemistryUniversity of Wrocław F. Joliot-Curie 14 50383 Wrocław Poland
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22
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Kato K, Osuka A. meta
‐ and
para
‐Phenylenediamine‐Fused Porphyrin Dimers: Synthesis and Magnetic Interactions of Their Dication Diradicals. Angew Chem Int Ed Engl 2019; 58:8546-8550. [DOI: 10.1002/anie.201901939] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/07/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Kenichi Kato
- 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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23
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Kato K, Osuka A. meta
‐ and
para
‐Phenylenediamine‐Fused Porphyrin Dimers: Synthesis and Magnetic Interactions of Their Dication Diradicals. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901939] [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)
- Kenichi Kato
- 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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24
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Kharel S, Bhuvanesh N, Gladysz JA, Blümel J. New hydrogen bonding motifs of phosphine oxides with a silanediol, a phenol, and chloroform. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.03.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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25
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Tsurusaki A, Matsumoto H, Kamikawa K. Dibenzo[b,e]phosphindolizines synthesized by a ring-closing metathesis of benzo[b]phospholes with two vinyl tethers. Chem Commun (Camb) 2019; 55:4909-4912. [PMID: 30892322 DOI: 10.1039/c9cc00463g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Dibenzo[b,e]phosphindolizines 1 were successfully synthesized by a ring-closing metathesis of benzo[b]phosphole chalcogenides 2a-2c with two vinyl tethers (for chalcogen analogs 1a-1c), and by a deselenization reaction (for lone-pair analog 1d). The structures, properties, and bowl inversion derived from a phosphorus atom were fully investigated.
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Affiliation(s)
- Akihiro Tsurusaki
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
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26
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Fioroni M, Savage RE, DeYonker NJ. On the formation of phosphorous polycyclic aromatics hydrocarbons (PAPHs) in astrophysical environments. Phys Chem Chem Phys 2019; 21:8015-8021. [PMID: 30931458 DOI: 10.1039/c9cp00547a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation of phosphorous-containing polycyclic aromatic hydrocarbons (PAPHs) in astrophysical contexts is proposed and analyzed by means of computational methods [B3LYP-D3BJ/ma-def2-TZVPP, MP2-F12, CCSD-F12b and CCSD(T)-F12b levels of theory]. A "bottom-up" approach based on a radical-neutral reaction scheme between acetylene (C2H2) and the CP radical was used investigating: (a) the synthesis of the first PAPH (C5H5P) "phosphinine"; (b) PAPH growth by addition of C2H2 to the C5H4P radical; (c) PAPH synthesis by addition reactions of one CP radical and nC2H2 to a neutral PAH. Results show: (I) the formation of the phosphinine radical has a strong thermodynamic tendency (-133.3 kcal mol-1) and kinetic barriers ≤5.4 kcal mol-1; (II) PAPH growth by nC2H2 addition on the radical phosphinine easily and exothermically produces radicals (1a- or 1-phospha-naphtalenes with kinetic barriers ≤7.1 kcal mol-1 and reaction free energies ≤-102.5 kcal mol-1); (III) the addition of a single CP + nC2H2 to a neutral benzene generates a complex chemistry where the main product is 2-phospha-naphtalene; (IV) because of the CP radical character, its barrierless addition to a PAH produces a resonant stabilized PAPH, becoming excellent candidates for addition reactions with neutral or radical hydrocarbons and PAHs; (V) the same energy trend between all four levels of theory continues a well-calibrated computational protocol to analyze complex organic reactions with astrochemical interest using electronic structure theory.
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Affiliation(s)
- Marco Fioroni
- 213 Smith Chemistry Building, The University of Memphis, Memphis, 38152, TN, USA.
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27
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Hirai M, Tanaka N, Sakai M, Yamaguchi S. Structurally Constrained Boron-, Nitrogen-, Silicon-, and Phosphorus-Centered Polycyclic π-Conjugated Systems. Chem Rev 2019; 119:8291-8331. [DOI: 10.1021/acs.chemrev.8b00637] [Citation(s) in RCA: 286] [Impact Index Per Article: 57.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Masato Hirai
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8601, Japan
| | - Naoki Tanaka
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8601, Japan
| | - Mika Sakai
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Shigehiro Yamaguchi
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8601, Japan
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
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28
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Omori H, Hiroto S, Takeda Y, Fliegl H, Minakata S, Shinokubo H. Ni(II) 10-Phosphacorrole: A Porphyrin Analogue Containing Phosphorus at the Meso Position. J Am Chem Soc 2019; 141:4800-4805. [DOI: 10.1021/jacs.8b13169] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroto Omori
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Satoru Hiroto
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Heike Fliegl
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
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29
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Farinone M, Cybińska J, Pawlicki M. A controlled blue-shift in meso-nitrogen aryl fused DIPY and BODIPY skeletons. Org Chem Front 2019. [DOI: 10.1039/c9qo00294d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
An aryl-amine attached to the meso-position of the BODIPY skeleton quenches the fluorescence. The observed edge fusion creates a new heterocyclic subunit simultaneously increasing the efficiency of emission. The quantitative deprotonation of meso NH functionality leads to absorbance blue shift and increased emission quantum yield showing potential for formation of BODIPY based changeable chromophores.
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Affiliation(s)
- Marco Farinone
- Wydział Chemii
- Uniwersytet Wrocławski
- 50-383 Wrocław
- Poland
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30
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Fukui N, Osuka A. Singly and Doubly Sulfone-Inserted Porphyrin Arch-Tape Dimers. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180103] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Norihito Fukui
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
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31
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Fujimoto K, Osuka A. A 1,5-Naphthyridine-Fused Porphyrin Dimer: Intense NIR Absorption and Facile Redox Interconversion with Its Reduced Congener. Chemistry 2018. [PMID: 29536577 DOI: 10.1002/chem.201800854] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
PtII -catalyzed cyclization of β-to-β ethynylene-bridged meso-amino NiII porphyrin dimer 4 followed by oxidation with PbO2 afforded 1,5-naphthyridine-fused porphyrin dimer 5 in good yield. This dimer possesses a redox-active 1,4-diazabutadiene linkage that is interconvertible with its reduced 1,2-diaminoethene linkage upon treatments with NaBH4 or PbO2 . The dimer 5 exhibits an intense NIR absorption and a narrow HOMO-LUMO gap with a remarkably low reduction potential mainly due to effective bonding interactions in the LUMO through the 1,4-diazabutadiene linkage. In contrast, the reduced dimer 7 is fairly electron-rich with high HOMO energy and shows a relatively large HOMO-LUMO gap compared to that of 5.
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Affiliation(s)
- Keisuke Fujimoto
- 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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Regulska E, Romero-Nieto C. Highlights on π-systems based on six-membered phosphorus heterocycles. Dalton Trans 2018; 47:10344-10359. [DOI: 10.1039/c8dt01485j] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Herein, we highlight relevant π-systems based on six-membered phosphorus heterocycles as well as their potential in bio- and optoelectronic applications.
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Affiliation(s)
- Elzbieta Regulska
- Organisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
- Institute of Chemistry
| | - Carlos Romero-Nieto
- Organisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
- HEiKA – Heidelberg–Karlsruhe Research Partnership
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