1
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Halland N, Schmidt F, Weiss T, Li Z, Czech J, Saas J, Ding-Pfennigdorff D, Dreyer MK, Strübing C, Nazare M. Rational Design of Highly Potent, Selective, and Bioavailable SGK1 Protein Kinase Inhibitors for the Treatment of Osteoarthritis. J Med Chem 2021; 65:1567-1584. [PMID: 34931844 DOI: 10.1021/acs.jmedchem.1c01601] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The serine/threonine kinase SGK1 is an activator of the β-catenin pathway and a powerful stimulator of cartilage degradation that is found to be upregulated under genomic control in diseased osteoarthritic cartilage. Today, no oral disease-modifying treatments are available and chronic treatment in this indication sets high requirements for the drug selectivity, pharmacokinetic, and safety profile. We describe the identification of a highly selective druglike 1H-pyrazolo[3,4-d]pyrimidine SGK1 inhibitor 17a that matches both safety and pharmacokinetic requirements for oral dosing. Rational compound design was facilitated by a novel hSGK1 co-crystal structure, and multiple ligand-based computer models were applied to guide the chemical optimization of the compound ADMET and selectivity profiles. Compounds were selected for subchronic proof of mechanism studies in the mouse femoral head cartilage explant model, and compound 17a emerged as a druglike SGK1 inhibitor, with a highly optimized profile suitable for oral dosing as a novel, potentially disease-modifying agent for osteoarthritis.
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Affiliation(s)
- Nis Halland
- Integrated Drug Discovery, Sanofi R&D, Industriepark Höchst, D-65926 Frankfurt am Main, Germany
| | - Friedemann Schmidt
- Integrated Drug Discovery, Sanofi R&D, Industriepark Höchst, D-65926 Frankfurt am Main, Germany
| | - Tilo Weiss
- Integrated Drug Discovery, Sanofi R&D, Industriepark Höchst, D-65926 Frankfurt am Main, Germany
| | - Ziyu Li
- Integrated Drug Discovery, Sanofi R&D, Industriepark Höchst, D-65926 Frankfurt am Main, Germany
| | - Jörg Czech
- Integrated Drug Discovery, Sanofi R&D, Industriepark Höchst, D-65926 Frankfurt am Main, Germany
| | - Joachim Saas
- Integrated Drug Discovery, Sanofi R&D, Industriepark Höchst, D-65926 Frankfurt am Main, Germany
| | | | - Matthias K Dreyer
- Integrated Drug Discovery, Sanofi R&D, Industriepark Höchst, D-65926 Frankfurt am Main, Germany
| | - Carsten Strübing
- Integrated Drug Discovery, Sanofi R&D, Industriepark Höchst, D-65926 Frankfurt am Main, Germany
| | - Marc Nazare
- Leibniz-Institut für Molekulare Pharmakologie (FMP), Robert-Rössle-Straße 10, 13125 Berlin-Buch, Germany
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2
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Shin JY, Kim SH, Lee S, Lee YS, Han WS, Wang KK. Effect of substituents of corrole derivatives on generation of singlet oxygen. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2020.138165] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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3
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Teixeira RI, da Silva RB, Gaspar CS, de Lucas NC, Garden SJ. Photophysical Properties of Fluorescent 2-(Phenylamino)-1,10-phenanthroline Derivatives †. Photochem Photobiol 2020; 97:47-60. [PMID: 32654158 DOI: 10.1111/php.13303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/14/2020] [Accepted: 06/21/2020] [Indexed: 01/13/2023]
Abstract
The present study details the experimental and theoretical characterization of the photophysical properties of 14 examples of 2-(phenylamino)-1,10-phenanthrolines (1). The absorption spectra of 1 are substituent-dependent but in a general manner present absorption bands at wavelengths of ~230; ~300; ~335 and a shoulder at ~380 nm. Electron-donating groups (EDG) and electron-withdrawing groups (EWG), respectively, result in bathochromic and hypsochromic shifts. Compounds 1 are highly luminescent, in contrast to phenanthroline, and emit in the region between 350 and 500 nm with substituent-dependent λmax emission. The emission spectra show a redshift for EDG (4-OMe 62 nm; 4-Me 19 nm) and a blueshift for EWG (4-CN 41 nm; 4-CF3 38 nm) relative to the emission of the unsubstituted parent compound 1a. Plotting the λ max EM against Hammett σ+ constants gave an excellent linear correlation demonstrating the electron-deficient nature of the excited state and how the substituents (de)stabilize S1 . Theoretical calculations revealed a HOMO-LUMO π-π* electronic transition to S1 which in combination with difference (S1 -S0 ) in electron density maps revealed charge-transfer character. Strongly electron-withdrawing substituents switch off the charge transfer to give rise to a local excitation.
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Affiliation(s)
- Rodolfo I Teixeira
- Instituto de Química, Centro de Tecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ramon B da Silva
- Instituto de Química, Centro de Tecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Caio S Gaspar
- Instituto de Química, Centro de Tecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Nanci C de Lucas
- Instituto de Química, Centro de Tecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Simon J Garden
- Instituto de Química, Centro de Tecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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4
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Pomarico E, Pospíšil P, Bouduban MEF, Vestfrid J, Gross Z, Záliš S, Chergui M, Vlček A. Photophysical Heavy-Atom Effect in Iodinated Metallocorroles: Spin–Orbit Coupling and Density of States. J Phys Chem A 2018; 122:7256-7266. [DOI: 10.1021/acs.jpca.8b05311] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Enrico Pomarico
- Ecole Polytechnique Fédérale de Lausanne, Laboratoire de Spectroscopie Ultrarapide, ISIC and Lausanne Centre for Ultrafast Science (LACUS), FSB, Station 6, CH-1015 Lausanne, Switzerland
| | - Petr Pospíšil
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 3, CZ-182 23 Prague, Czech Republic
| | - Marine E. F. Bouduban
- Ecole Polytechnique Fédérale de Lausanne, Laboratoire de Spectroscopie Ultrarapide, ISIC and Lausanne Centre for Ultrafast Science (LACUS), FSB, Station 6, CH-1015 Lausanne, Switzerland
| | - Jenya Vestfrid
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Zeev Gross
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Stanislav Záliš
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 3, CZ-182 23 Prague, Czech Republic
| | - Majed Chergui
- Ecole Polytechnique Fédérale de Lausanne, Laboratoire de Spectroscopie Ultrarapide, ISIC and Lausanne Centre for Ultrafast Science (LACUS), FSB, Station 6, CH-1015 Lausanne, Switzerland
| | - Antonín Vlček
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 3, CZ-182 23 Prague, Czech Republic
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
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5
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Yadav O, Varshney A, Kumar A. Manganese(III) mediated synthesis of A2B Mn(III) corroles: A new general and green synthetic approach and characterization. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.10.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Ultrafast Dynamics of Sb-Corroles: A Combined Vis-Pump Supercontinuum Probe and Broadband Fluorescence Up-Conversion Study. Molecules 2017; 22:molecules22071174. [PMID: 28703762 PMCID: PMC6152390 DOI: 10.3390/molecules22071174] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/01/2017] [Accepted: 07/10/2017] [Indexed: 12/17/2022] Open
Abstract
Corroles are a developing class of tetrapyrrole-based molecules with significant chemical potential and relatively unexplored photophysical properties. We combined femtosecond broadband fluorescence up-conversion and fs broadband Vis-pump Vis-probe spectroscopy to comprehensively characterize the photoreaction of 5,10,15-tris-pentafluorophenyl-corrolato-antimony(V)-trans-difluoride (Sb-tpfc-F₂). Upon fs Soret band excitation at ~400 nm, the energy relaxed almost completely to Q band electronic excited states with a time constant of 500 ± 100 fs; this is evident from the decay of Soret band fluorescence at around 430 nm and the rise time of Q band fluorescence, as well as from Q band stimulated emission signals at 600 and 650 nm with the same time constant. Relaxation processes on a time scale of 10 and 20 ps were observed in the fluorescence and absorption signals. Triplet formation showed a time constant of 400 ps, with an intersystem crossing yield from the Q band to the triplet manifold of between 95% and 99%. This efficient triplet formation is due to the spin-orbit coupling of the antimony ion.
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7
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Langlois A, Xu HJ, Karsenti PL, Gros CP, Harvey PD. Excited State N−H Tautomer Selectivity in the Singlet Energy Transfer of a Zinc(II)-Porphyrin-Truxene-Corrole Assembly. Chemistry 2017; 23:5010-5022. [DOI: 10.1002/chem.201605909] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Adam Langlois
- Département de Chimie; Université de Sherbrooke; Sherbrooke PQ J1K 2R1 Canada
| | - Hai-Jun Xu
- Université de Bourgogne Franche-Comté UBFC ICMUB; UMR CNRS 6302; 9 Avenue Alain Savary BP 47870 21078 Dijon Cedex France
- Present address: College of Chemical Engineering; Nanjing Forestry University; Nanjing 210037 P.R. China
| | | | - Claude P. Gros
- Université de Bourgogne Franche-Comté UBFC ICMUB; UMR CNRS 6302; 9 Avenue Alain Savary BP 47870 21078 Dijon Cedex France
| | - Pierre D. Harvey
- Département de Chimie; Université de Sherbrooke; Sherbrooke PQ J1K 2R1 Canada
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8
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Flamigni L. Functional Arrays for Light Energy Capture and Charge Separation. CHEM REC 2016; 16:1067-81. [DOI: 10.1002/tcr.201500295] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Lucia Flamigni
- Istituto ISOF-CNR; Via P. Gobetti 101 40129 Bologna Italy
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9
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Abstract
The phosphorescence features of free base corroles have been analysed, completing the picture on their excited state photophysical properties.
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Affiliation(s)
| | - Thien Huynh Ngo
- Molecular Design and Synthesis
- Department of Chemistry
- KU Leuven
- B-3001 Leuven
- Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis
- Department of Chemistry
- KU Leuven
- B-3001 Leuven
- Belgium
| | - Wouter Maes
- Design & Synthesis of Organic Semiconductors (DSOS)
- Institute for Materials Research (IMO-IMOMEC)
- Hasselt University
- B-3590 Diepenbeek
- Belgium
| | - Mikalai M. Kruk
- Belarusian State Technological University
- Physics Department
- Minsk
- Belarus
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10
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Ngo TH, Zieba D, Webre WA, Lim GN, Karr PA, Kord S, Jin S, Ariga K, Galli M, Goldup S, Hill JP, D'Souza F. Engaging Copper(III) Corrole as an Electron Acceptor: Photoinduced Charge Separation in Zinc Porphyrin–Copper Corrole Donor–Acceptor Conjugates. Chemistry 2015; 22:1301-12. [DOI: 10.1002/chem.201503490] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Thien H. Ngo
- International Center for Young Scientist (ICYS) National Institute for Materials Science Namiki 1-1 Tsukuba Ibaraki 305-0044 Japan
- WPI Center for Materials Nanoarchitectonics National Institute for Materials Science Namiki 1-1 Tsukuba Ibaraki 305-0044 (Japan
| | - David Zieba
- Institut für Chemie und Biochemie Freie Universität Berlin Takustrasse 3 14195 Berlin Germany
| | - Whitney A. Webre
- Department of Chemistry University of North Texas 1155 Union Circle, 305070 Denton TX 76203 USA
| | - Gary N. Lim
- Department of Chemistry University of North Texas 1155 Union Circle, 305070 Denton TX 76203 USA
| | - Paul A. Karr
- Department of Physical Sciences and Mathematics Wayne State College 111 Main Street Wayne NE 68787 USA
| | - Scheghajegh Kord
- Institut für Chemie und Biochemie Freie Universität Berlin Takustrasse 3 14195 Berlin Germany
| | - Shangbin Jin
- WPI Center for Materials Nanoarchitectonics National Institute for Materials Science Namiki 1-1 Tsukuba Ibaraki 305-0044 (Japan
| | - Katsuhiko Ariga
- WPI Center for Materials Nanoarchitectonics National Institute for Materials Science Namiki 1-1 Tsukuba Ibaraki 305-0044 (Japan
| | - Marzia Galli
- Department of Chemistry University of Southampton Southampton SO17 1BJ UK
| | - Steve Goldup
- Department of Chemistry University of Southampton Southampton SO17 1BJ UK
| | - Jonathan P. Hill
- WPI Center for Materials Nanoarchitectonics National Institute for Materials Science Namiki 1-1 Tsukuba Ibaraki 305-0044 (Japan
| | - Francis D'Souza
- Department of Chemistry University of North Texas 1155 Union Circle, 305070 Denton TX 76203 USA
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11
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Semenishyn N, Mahammed A, Gross Z. Corrole-Decorated Porphyrin Dendrimer and Its Selective Metallation. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500752] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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12
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Saltsman I, Goldberg I, Gross Z. Porphyrins and Corroles with 2,6-Pyrimidyl Substituents. Org Lett 2015; 17:3214-7. [DOI: 10.1021/acs.orglett.5b01297] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Irena Saltsman
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 32000, Israel
| | - Israel Goldberg
- School
of Chemistry, Sackler Faculty of Exact Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Zeev Gross
- Schulich
Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 32000, Israel
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13
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Canard G, Gao D, D'Aléo A, Giorgi M, Dang FX, Balaban TS. meso-Ester Corroles. Chemistry 2015; 21:7760-71. [DOI: 10.1002/chem.201406369] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Indexed: 01/06/2023]
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14
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Zhang L, Liu ZY, Zhan X, Wang LL, Wang H, Liu HY. Photophysical properties of electron-deficient free-base corroles bearing meso-fluorophenyl substituents. Photochem Photobiol Sci 2015; 14:953-62. [DOI: 10.1039/c5pp00060b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The ultrafast photophysical behaviors of a series of meso-flurophenyl substituted electron-deficient free base corroles F0C, F5C, F10C and F15C in toluene have been investigated using femtosecond time resolved absorption spectroscopy and steady spectroscopies.
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Affiliation(s)
- Lei Zhang
- State Key Laboratory of Optoelectronics Materials and Technologies
- Sun-Yat Sen University
- Guangzhou 510275
- China
| | - Zi-Yu Liu
- State Key Laboratory of Optoelectronics Materials and Technologies
- Sun-Yat Sen University
- Guangzhou 510275
- China
| | - Xuan Zhan
- Department of Chemistry
- South China University of Technology
- Guangzhou 510641
- China
| | - Li-Li Wang
- State Key Laboratory of Optoelectronics Materials and Technologies
- Sun-Yat Sen University
- Guangzhou 510275
- China
| | - Hui Wang
- State Key Laboratory of Optoelectronics Materials and Technologies
- Sun-Yat Sen University
- Guangzhou 510275
- China
| | - Hai-Yang Liu
- Department of Chemistry
- South China University of Technology
- Guangzhou 510641
- China
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15
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Vestfrid J, Goldberg I, Gross Z. Tuning the Photophysical and Redox Properties of Metallocorroles by Iodination. Inorg Chem 2014; 53:10536-42. [DOI: 10.1021/ic501585a] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Jenya Vestfrid
- Schulich
Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Israel Goldberg
- School
of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel
| | - Zeev Gross
- Schulich
Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 32000, Israel
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16
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Ishihara S, Labuta J, Van Rossom W, Ishikawa D, Minami K, Hill JP, Ariga K. Porphyrin-based sensor nanoarchitectonics in diverse physical detection modes. Phys Chem Chem Phys 2014; 16:9713-46. [PMID: 24562603 DOI: 10.1039/c3cp55431g] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Porphyrins and related families of molecules are important organic modules as has been reflected in the award of the Nobel Prizes in Chemistry in 1915, 1930, 1961, 1962, 1965, and 1988 for work on porphyrin-related biological functionalities. The porphyrin core can be synthetically modified by introduction of various functional groups and other elements, allowing creation of numerous types of porphyrin derivatives. This feature makes porphyrins extremely useful molecules especially in combination with their other interesting photonic, electronic and magnetic properties, which in turn is reflected in their diverse signal input-output functionalities based on interactions with other molecules and external stimuli. Therefore, porphyrins and related macrocycles play a preeminent role in sensing applications involving chromophores. In this review, we discuss recent developments in porphyrin-based sensing applications in conjunction with the new advanced concept of nanoarchitectonics, which creates functional nanostructures based on a profound understanding of mutual interactions between the individual nanostructures and their arbitrary arrangements. Following a brief explanation of the basics of porphyrin chemistry and physics, recent examples in the corresponding fields are discussed according to a classification based on physical modes of detection including optical detection (absorption/photoluminescence spectroscopy and energy and electron transfer processes), other spectral modes (circular dichroism, plasmon and nuclear magnetic resonance), electronic and electrochemical modes, and other sensing modes.
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Affiliation(s)
- Shinsuke Ishihara
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan.
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17
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Beenken W, Presselt M, Ngo TH, Dehaen W, Maes W, Kruk M. Molecular Structures and Absorption Spectra Assignment of Corrole NH Tautomers. J Phys Chem A 2014; 118:862-71. [DOI: 10.1021/jp411033h] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Wichard Beenken
- Institute
of Physics, Ilmenau University of Technology, P.O. Box 100565, 98684 Ilmenau, Germany
| | - Martin Presselt
- Institute
of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg
4, 07743 Jena, Germany
| | - Thien H. Ngo
- International Center for Young Scientists (ICYS)/International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Wim Dehaen
- Molecular
Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan
200F, B-3001 Leuven, Belgium
| | - Wouter Maes
- Design & Synthesis of Organic Semiconductors (DSOS), Institute for Materials Research (IMO), Hasselt University, Universitaire Campus, Agoralaan 1 - Building D, B-3590 Diepenbeek, Belgium
| | - Mikalai Kruk
- Physics Department, Belarusian State Technological University, Sverdlova str. 13a, Minsk 220050, Belarus
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18
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Light Energy Collection in a Porphyrin-Imide-Corrole Ensemble. Chem Asian J 2013; 8:1004-14. [DOI: 10.1002/asia.201300014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 01/25/2013] [Indexed: 11/07/2022]
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19
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Ivanova YB, Savva VA, Mamardashvili NZ, Starukhin AS, Ngo TH, Dehaen W, Maes W, Kruk MM. Corrole NH tautomers: spectral features and individual protonation. J Phys Chem A 2012; 116:10683-94. [PMID: 22985133 DOI: 10.1021/jp305325e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Protonation of a free-base meso-pyrimidinyl-substituted AB(2)-corrole (H(3)AB(2)) in ethanol solution by stepwise addition of sulfuric acid has been studied in the temperature range from 293 to 333 K. The formation rate of protonated species was found to depend profoundly on the temperature at which the titration was undertaken. Two steps in the titration curve were identified at temperatures around 293-298 K, whereas one-step formation of protonated species was found to occur at temperatures above 308 K. The protonation product was the same in both cases, i.e., H(4)AB(2)(+) corrole, protonated at the macrocycle core nitrogen atoms. The two steps in the protonation kinetics at lower temperatures were attributed to protonation of individual tautomers of the free-base H(3)AB(2) corrole. To the best of our knowledge, this is the first well-illustrated (spectrophotometric) observation of individual properties of corrole NH tautomers in fluid solution. Concomitant increase in the NH tautomerization rate with increasing temperature is proposed to account for the one-step protonation. Evidences for the role of individual corrole NH tautomers in the protonation process as well as their optical features are discussed based on spectroscopic results and simulation data.
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Affiliation(s)
- Yulia B Ivanova
- Institute of Solution Chemistry of Russian Academy of Sciences, 153045, Ivanovo, Academicheskaya str. 1, Russian Federation
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20
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Kruk M, Ngo TH, Verstappen P, Starukhin A, Hofkens J, Dehaen W, Maes W. Unraveling the Fluorescence Features of Individual Corrole NH Tautomers. J Phys Chem A 2012; 116:10695-703. [DOI: 10.1021/jp305326x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Mikalai Kruk
- B. I. Stepanov Institute of Physics of National Academy of Sciences, Pr. Nezavisimosti 68, Minsk 220072, Belarus
| | - Thien H. Ngo
- Molecular Design and Synthesis,
Department of Chemistry, KU Leuven, Celestijnenlaan
200F, B-3001 Leuven, Belgium
- Institut für Chemie und
Biochemie−Organische Chemie, Freie Universität Berlin, Takustrasse 3, D-14195 Berlin, Germany
| | - Pieter Verstappen
- Design & Synthesis of Organic Semiconductors (DSOS), Institute for Materials Research (IMO-IMOMEC), Hasselt University, Universitaire Campus, Agoralaan 1, Building D, B-3590 Diepenbeek, Belgium
| | - Aleksander Starukhin
- B. I. Stepanov Institute of Physics of National Academy of Sciences, Pr. Nezavisimosti 68, Minsk 220072, Belarus
| | - Johan Hofkens
- Molecular Imaging and Photonics,
Department of Chemistry, KU Leuven, Celestijnenlaan
200F, B-3001 Leuven, Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis,
Department of Chemistry, KU Leuven, Celestijnenlaan
200F, B-3001 Leuven, Belgium
| | - Wouter Maes
- Molecular Design and Synthesis,
Department of Chemistry, KU Leuven, Celestijnenlaan
200F, B-3001 Leuven, Belgium
- Design & Synthesis of Organic Semiconductors (DSOS), Institute for Materials Research (IMO-IMOMEC), Hasselt University, Universitaire Campus, Agoralaan 1, Building D, B-3590 Diepenbeek, Belgium
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21
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Voloshchuk R, Gryko DT, Chotkowski M, Ciuciu AI, Flamigni L. Photoinduced Electron Transfer in an Amine-Corrole-Perylene Bisimide Assembly: Charge Separation over Terminal Components Favoured by Solvent Polarity. Chemistry 2012; 18:14845-59. [DOI: 10.1002/chem.201200744] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 07/27/2012] [Indexed: 11/07/2022]
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22
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Kruk M, Ngo TH, Savva V, Starukhin A, Dehaen W, Maes W. Solvent-Dependent Deprotonation of meso-Pyrimidinylcorroles: Absorption and Fluorescence Studies. J Phys Chem A 2012; 116:10704-11. [DOI: 10.1021/jp305327c] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Mikalai Kruk
- B. I. Stepanov Institute of Physics of National Academy of Sciences, Pr. Nezavisimosti 68, Minsk 220072, Belarus
| | - Thien H. Ngo
- Molecular Design and Synthesis,
Department of Chemistry, KU Leuven, Celestijnenlaan
200F, B-3001 Leuven, Belgium
- Institut für Chemie und
Biochemie−Organische Chemie, Freie Universität Berlin, Takustrasse 3, D-14195 Berlin, Germany
| | - Vadim Savva
- B. I. Stepanov Institute of Physics of National Academy of Sciences, Pr. Nezavisimosti 68, Minsk 220072, Belarus
| | - Aleksander Starukhin
- B. I. Stepanov Institute of Physics of National Academy of Sciences, Pr. Nezavisimosti 68, Minsk 220072, Belarus
| | - Wim Dehaen
- Molecular Design and Synthesis,
Department of Chemistry, KU Leuven, Celestijnenlaan
200F, B-3001 Leuven, Belgium
| | - Wouter Maes
- Molecular Design and Synthesis,
Department of Chemistry, KU Leuven, Celestijnenlaan
200F, B-3001 Leuven, Belgium
- Design & Synthesis of Organic Semiconductors (DSOS), Institute for Materials Research (IMO-IMOMEC), Hasselt University, Universitaire Campus, Agoralaan 1, Building D, B-3590 Diepenbeek, Belgium
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Ngo TH, Nastasi F, Puntoriero F, Campagna S, Dehaen W, Maes W. Corrole-Porphyrin Conjugates with Interchangeable Metal Centers. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200836] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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24
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Ngo TH, Nitychoruk KA, Lentz D, Rzymowski T, Dehaen W, Maes W. Oligoether-strapped meso-pyrimidinylporphyrins. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.02.116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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25
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Flamigni L, Ciuciu AI, Langhals H, Böck B, Gryko DT. Improving the Photoinduced Charge Separation Parameters in Corrole-Perylene Carboximide Dyads by Tuning the Redox and Spectroscopic Properties of the Components. Chem Asian J 2012; 7:582-92. [DOI: 10.1002/asia.201100818] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Indexed: 11/07/2022]
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