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Grabowski D, Alef S, Becker S, Müller U, Schnakenburg G, Höger S. Condensation of pyrylium salts with mixed anhydrides: aryl ethers, aryl amines and sterically congested aromatics. Org Chem Front 2022. [DOI: 10.1039/d1qo01419f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Condensation of 2,4,6-triaryl pyrylium salts with mixed anhydrides, formed in situ from α-functionalized sodium acetates and an anhydride solvent, leads in good yields to the corresponding 2,4,6-triaryl benzenes functionalized at their 1-position.
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Affiliation(s)
- Daniel Grabowski
- Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - Susanne Alef
- Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - Steven Becker
- Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - Ute Müller
- Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - Gregor Schnakenburg
- Institut für Anorganische Chemie, Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - Sigurd Höger
- Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
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Nagahora N, Goto S, Inatomi T, Tokumaru H, Matsubara K, Shioji K, Okuma K. Buchwald–Hartwig Amination of Phosphinines and the Effect of Amine Substituents on Optoelectronic Properties of the Resulting Coupling Products. J Org Chem 2018; 83:6373-6381. [DOI: 10.1021/acs.joc.8b00592] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Noriyoshi Nagahora
- Department of Chemistry, Faculty of Science, Fukuoka University, Jonan-ku, Fukuoka 814-0180, Japan
| | - Shoko Goto
- Department of Chemistry, Faculty of Science, Fukuoka University, Jonan-ku, Fukuoka 814-0180, Japan
| | - Takahiro Inatomi
- Department of Chemistry, Faculty of Science, Fukuoka University, Jonan-ku, Fukuoka 814-0180, Japan
| | - Hiroshi Tokumaru
- Department of Chemistry, Faculty of Science, Fukuoka University, Jonan-ku, Fukuoka 814-0180, Japan
| | - Kouki Matsubara
- Department of Chemistry, Faculty of Science, Fukuoka University, Jonan-ku, Fukuoka 814-0180, Japan
| | - Kosei Shioji
- Department of Chemistry, Faculty of Science, Fukuoka University, Jonan-ku, Fukuoka 814-0180, Japan
| | - Kentaro Okuma
- Department of Chemistry, Faculty of Science, Fukuoka University, Jonan-ku, Fukuoka 814-0180, Japan
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Zhu X, Shao B, Vanden Bout DA, Plunkett KN. Directing the Conformation of Oligo(phenylenevinylene) Polychromophores with Rigid, Nonconjugatable Morphons. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00067] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Xinju Zhu
- Department
of Chemistry and Biochemistry and the Materials Technology Center, Southern Illinois University, Carbondale, Illinois 62901, United States
| | - Beiyue Shao
- Center
for Nano- and Molecular Science and Technology, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - David A. Vanden Bout
- Center
for Nano- and Molecular Science and Technology, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Kyle N. Plunkett
- Department
of Chemistry and Biochemistry and the Materials Technology Center, Southern Illinois University, Carbondale, Illinois 62901, United States
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Fakis M, Anestopoulos D, Giannetas V, Persephonis P. Influence of Aggregates and Solvent Aromaticity on the Emission of Conjugated Polymers. J Phys Chem B 2006; 110:24897-902. [PMID: 17149910 DOI: 10.1021/jp0619033] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The influence of aggregates and solvent aromaticity on the photophysics and fluorescence dynamics of two conjugated polymers is studied. The two polymers are derivatives of poly(p-phenylene vinylene) (PPV) containing different kinked moieties along the main chain. The polymers contain 2,6-diphenylpyridine and m-terphenyl kinked moieties and they are abbreviated as PN and PC, respectively. The insertion of kinked segments along the main chain shifts the emission spectrum from the yellow-orange spectral region, common to PPV derivatives, to the blue-green spectral region. The results show that in dilute solutions the polymers decay monoexponentially, while in concentrated ones the fluorescence decays biexponentially, indicating fluorescence quenching. This is attributed to an energy transfer process from polymer chains to aggregates that occurs within a few tens of picoseconds. By comparing the photophysics and fluorescence dynamics of polymer PN in a nonaromatic and an aromatic solvent, we conclude that the polymer conformation adopted in the aromatic solvent leads to a higher fluorescence quantum yield and a longer fluorescence lifetime. Furthermore, the fluorescence quenching of PN because of aggregates is faster and more efficient in the aromatic than in the nonaromatic solvent. These results can be explained through a more extended chain conformation of PN in the aromatic solvent.
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Affiliation(s)
- Mihalis Fakis
- Department of Physics, University of Patras, Patras 26504, Greece.
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Fakis M, Polyzos I, Tsigaridas G, Giannetas V, Persephonis P. Excited state dynamics of a partially conjugated polymer studied by femtosecond fluorescence upconversion spectroscopy. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.07.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Karastatiris P, Mikroyannidis JA, Spiliopoulos IK, Fakis M, Persephonis P. Luminescent poly(phenylene vinylene) derivatives withm-terphenyl or 2,6-diphenylpyridine kinked segments along the main chain: Synthesis, characterization, and stimulated emission. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pola.20050] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Mpallas JG, Spiliopoulos IK, Mikroyannidis JA. Blue light-emitting poly(p-phenylenevinylene) derivatives containing alternating conjugated segments and aliphatic spacers. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/pola.10650] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Mikroyannidis JA. Synthesis by Heck Coupling of Soluble, Blue-Light-Emitting Fully Conjugated Poly(p-phenylenevinylene)s with Highly Phenylated Side Groups. Macromolecules 2002. [DOI: 10.1021/ma021242h] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- John A. Mikroyannidis
- Chemical Technology Laboratory, Department of Chemistry, University of Patras, GR-26500 Patras, Greece
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Spiliopoulos IK, Mikroyannidis JA. Synthesis of Methacrylic Monomers Bearing Stilbenoid Chromophore and Their Free-Radical Polymerization To Give Luminescent Polymers. Macromolecules 2002. [DOI: 10.1021/ma0122324] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ioakim K. Spiliopoulos
- Chemical Technology Laboratory, Department of Chemistry, University of Patras, GR-26500 Patras, Greece
| | - John A. Mikroyannidis
- Chemical Technology Laboratory, Department of Chemistry, University of Patras, GR-26500 Patras, Greece
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Synthesis of poly(p-phenylene vinylene)- and poly(phenylene ethynylene)-based polymers containingp-terphenyl in the main chain with alkoxyphenyl side groups. ACTA ACUST UNITED AC 2002. [DOI: 10.1002/pola.10352] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Spiliopoulos IK, Mikroyannidis JA. Blue-Light-Emitting Poly(phenylenevinylene)s with Alkoxyphenyl Substituents: Synthesis and Optical Properties. Macromolecules 2002. [DOI: 10.1021/ma011409r] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ioakim K. Spiliopoulos
- Chemical Technology Laboratory, Department of Chemistry, University of Patras, GR-26500 Patras, Greece
| | - John A. Mikroyannidis
- Chemical Technology Laboratory, Department of Chemistry, University of Patras, GR-26500 Patras, Greece
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Spiliopoulos IK, Mikroyannidis JA. Synthesis and optical properties of soluble polyethers containing oligophenyl in the main chain andp-styrylbenzene side groups. ACTA ACUST UNITED AC 2002. [DOI: 10.1002/pola.10151] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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