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Ivanov MY, Fedin MV. Nanoscale heterogeneities in ionic liquids: insights from EPR of spin probes. MENDELEEV COMMUNICATIONS 2018. [DOI: 10.1016/j.mencom.2018.11.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Ivanov MY, Prikhod’ko SA, Adonin NY, Bagryanskaya EG, Fedin MV. Influence of C2-Methylation of Imidazolium Based Ionic Liquids on Photoinduced Spin Dynamics of the Dissolved ZnTPP Studied by Time-Resolved EPR. Z PHYS CHEM 2016. [DOI: 10.1515/zpch-2016-0820] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Abstract
Unusual physical properties of ionic liquids (ILs) can be implemented in many different applications and are very sensitive to the structure of IL. In this work we investigate the spin dynamics of probe molecule Zn tetraphenylporphyrin (ZnTPP) dissolved in a series of ILs using time-resolved electron paramagnetic resonance (TR EPR). We compare the TR EPR characteristics in C2-methylated imidazolium-based ILs [bmmim]BF4 and [bmmim]PF6 and in their C2-protonated analogs [bmim]BF4 and [bmim]PF6 to assess the influence of C2-methylation. The corresponding TR EPR signatures are drastically different in the two types of ILs. The analysis of experimental data allows assumptions that the ZnTPP molecule is distorted in C2-methylated ILs, contrary to other organic media and C2-protonated analogs. The mobility of ZnTPP in C2-methylated ILs is smaller compared to that in C2-protonated analogs, implying different microenvironment formed around dissolved ZnTPP.
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Affiliation(s)
- Mikhail Yu. Ivanov
- International Tomography Center SB RAS, 630090, Novosibirsk, Russian Federation
- Novosibirsk State University, 630090, Novosibirsk, Russian Federation
| | | | - Nicolay Yu. Adonin
- Boreskov Institute of Catalysis SB RAS, 630090, Novosibirsk, Russian Federation
| | - Elena G. Bagryanskaya
- Novosibirsk State University, 630090, Novosibirsk, Russian Federation
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, 630090, Novosibirsk, Russian Federation
| | - Matvey V. Fedin
- Novosibirsk State University, 630090, Novosibirsk, Russian Federation
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090, Novosibirsk, Russian Federation , Tel.: +7 383 3301276
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Ivanov MY, Veber SL, Prikhod’ko SA, Adonin NY, Bagryanskaya EG, Fedin MV. Probing Microenvironment in Ionic Liquids by Time-Resolved EPR of Photoexcited Triplets. J Phys Chem B 2015; 119:13440-9. [DOI: 10.1021/acs.jpcb.5b06792] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Yu. Ivanov
- International
Tomography Center SB RAS, 630090, Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk, Russia
| | - S. L. Veber
- International
Tomography Center SB RAS, 630090, Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk, Russia
| | - S. A. Prikhod’ko
- Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia
| | - N. Yu. Adonin
- Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia
| | - E. G. Bagryanskaya
- International
Tomography Center SB RAS, 630090, Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk, Russia
- N. N. Vorozhtsov
Novosibirsk Institute of Organic Chemistry SB RAS, 630090 Novosibirsk, Russia
| | - M. V. Fedin
- International
Tomography Center SB RAS, 630090, Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk, Russia
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Mandal P, Kundu S, Misra T, Roy SK, Ganguly T. Effects of Liquid Crystal Environment on the Spectroscopic and Photophysical Properties of Well-Known Reacting Systems 2,3-Dimethylindole (DMI) and 9-Cyanoanthracene (9CNA). J Phys Chem A 2007; 111:11480-6. [DOI: 10.1021/jp073501g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paulami Mandal
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Sudarshan Kundu
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Tapas Misra
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Subir Kumar Roy
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Tapan Ganguly
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
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Principal ZFS tensor axes versus optical transition moments of novel expanded porphyrins (texaphyrins). Time-resolved triplet EPR spectroscopy. Chem Phys Lett 1989. [DOI: 10.1016/0009-2614(89)87618-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gonen O, Levanon H. Energy transfer and fine structure axes determination in a hybrid porphyrin dimer oriented in a liquid crystal. Time resolved triplet EPR spectroscopy. J Chem Phys 1986. [DOI: 10.1063/1.450083] [Citation(s) in RCA: 88] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Subramanian R, Patterson LK, Levanon H. PHOTOPHYSICS IN LIQUID CRYSTALS. FLUORESCENCE BEHAVIOR OF CHLOROPHYLL-a IN DODECYLCYANOBIPHENYL. Photochem Photobiol 1985. [DOI: 10.1111/j.1751-1097.1985.tb03520.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Picosecond time-resolved fluorescence spectra of a liquid crystal: Fluorescence behavior related to phase transitions in cyanooctyloxybiphenyl. Chem Phys Lett 1984. [DOI: 10.1016/0009-2614(84)85627-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gonen O, Levanon H. EPR study of oriented photoexcited triplets of zinc porphyrin in a discotic liquid crystal: Evidence for axial symmetry in the condensed phase. J Chem Phys 1983. [DOI: 10.1063/1.445065] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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