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New azo dyes based on 8-methoxy-2,2,4-trimethyl-1,2-dihydroquinoline and N-substituted tetrazoles. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3647-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Garcia-Amorós J, Maerz B, Reig M, Cuadrado A, Blancafort L, Samoylova E, Velasco D. Picosecond Switchable Azo Dyes. Chemistry 2019; 25:7726-7732. [PMID: 30924974 DOI: 10.1002/chem.201900796] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Indexed: 12/27/2022]
Abstract
Azo dyes that combine electron-withdrawing thiazole/benzothiazole heterocycles and electron-donating amino groups within the very same covalent skeleton exhibit relaxation times for their thermal isomerization kinetics within milli- and microsecond timescales at room temperature. Notably, the thermal back reaction of the corresponding benzothiazolium and thiazolium salts occurred much faster, within the picosecond temporal domain. In fact, these new light-sensitive platforms are the first molecular azo derivatives capable of reversible switching between their trans and cis isomers in a subnanosecond timescale under ambient conditions. In addition, theoretical calculations revealed very low activation energies for the isomerization process, in accordance with the fast subnanosecond kinetics that were observed experimentally.
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Affiliation(s)
- Jaume Garcia-Amorós
- Grup de Materials Orgànics, Institut de Nanociència i Nanotecnologia (IN2UB), Departament de Química Inorgànica i Orgànica, (Secció de Química Orgànica), Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, Spain
| | - Benjamin Maerz
- Chair for BioMolecular Optics, Department of Physics, Ludwigs-Maximilians-University, Oettingenstrasse 67, 80538, Munich, Germany
| | - Marta Reig
- Grup de Materials Orgànics, Institut de Nanociència i Nanotecnologia (IN2UB), Departament de Química Inorgànica i Orgànica, (Secció de Química Orgànica), Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, Spain
| | - Alba Cuadrado
- Grup de Materials Orgànics, Institut de Nanociència i Nanotecnologia (IN2UB), Departament de Química Inorgànica i Orgànica, (Secció de Química Orgànica), Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, Spain
| | - Lluís Blancafort
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, Campus de Montilivi, 17003, Girona, Spain
| | - Elena Samoylova
- Chair for BioMolecular Optics, Department of Physics, Ludwigs-Maximilians-University, Oettingenstrasse 67, 80538, Munich, Germany
| | - Dolores Velasco
- Grup de Materials Orgànics, Institut de Nanociència i Nanotecnologia (IN2UB), Departament de Química Inorgànica i Orgànica, (Secció de Química Orgànica), Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, Spain
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Nekipelova TD, Khodot EN, Klimovich (Lygo) ON, Kurkovskaya LN, Levina II, Kuzmin VA. Novel hetarylazo dyes containing tetrazole and hydroquinoline moieties: spectral characteristics, solvatochromism and photochemistry. Photochem Photobiol Sci 2016; 15:1558-1566. [DOI: 10.1039/c6pp00251j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel hetarylazo dyes containing tetrazole and tetra- or dihydroquinoline moieties exhibit solvatochromism dramatically depending on the proton accepting ability of solvents and the dye concentration.
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Affiliation(s)
- Tatiana D. Nekipelova
- Emanuel Institute of Biochemical Physics
- Russian Academy of Sciences
- Moscow
- 119334 Russia
| | - Evgenii N. Khodot
- Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- 119991 Russia
| | | | - Lidiya N. Kurkovskaya
- Emanuel Institute of Biochemical Physics
- Russian Academy of Sciences
- Moscow
- 119334 Russia
| | - Irina I. Levina
- Emanuel Institute of Biochemical Physics
- Russian Academy of Sciences
- Moscow
- 119334 Russia
| | - Vladimir A. Kuzmin
- Emanuel Institute of Biochemical Physics
- Russian Academy of Sciences
- Moscow
- 119334 Russia
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