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Tkachenko N, Golovanov V, Penni A, Vesamäki S, Ajayakumar MR, Muranaka A, Kobayashi N, Efimov A. The windmill, the dragon, and the frog: geometry control over the spectral, magnetic, and electrochemical properties of cobalt phthalocyanine regioisomers. Phys Chem Chem Phys 2024; 26:18113-18128. [PMID: 38895861 DOI: 10.1039/d4cp01564a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
For the first time, we have prepared non-aggregating phthalocyanine cobalt complexes as a set of resolved positional isomers. These compounds comprise a unique test bed for the structure-properties studies, as their optical and electrochemical properties are influenced by the planarity of the phthalocyanine macrocycle, which can be controlled by the positional isomerism of the bulky aromatic substituents at the α-phthalo sites. We support our conclusions with molecular modelling studies, which show a perfect match between the calculated and experimentally determined spectral/electrochemical values. We challenge a common perception that the NMR spectra of cobalt phthalocyanines cannot be measured due to the paramagnetic nature of Co(II). We suggest instead that the key factors affecting the NMR spectral resolution are molecular aggregation and π-π stacking. These interactions are suppressed by the bulky peripheral substituents on the cobalt phthalocyanines prepared, making these isomeric compounds an excellent tool for paramagnetic NMR studies.
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Affiliation(s)
| | - Viacheslav Golovanov
- Tampere University, Korkeakoulunkatu 10, 33720 Tampere, Finland.
- South-Ukrainian National University, Staroportofrankovskaya str. 26, 65020, Odessa, Ukraine
| | - Aleksandr Penni
- Tampere University, Korkeakoulunkatu 10, 33720 Tampere, Finland.
| | - Sami Vesamäki
- Tampere University, Korkeakoulunkatu 10, 33720 Tampere, Finland.
| | - M R Ajayakumar
- Tampere University, Korkeakoulunkatu 10, 33720 Tampere, Finland.
| | - Atsuya Muranaka
- Molecular Structure Characterization Unit, RIKEN Center for Sustainable Resource Science, Wako, Saitama 351-0198, Japan
| | - Nagao Kobayashi
- Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan
| | - Alexander Efimov
- Tampere University, Korkeakoulunkatu 10, 33720 Tampere, Finland.
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Akyüz D, Demirbaş Ü, Bekircan O. Metallo‐phthalocyanines Containing 1,3,4‐oxadiazole Substituents: Synthesis, Characterization, Electrochemical and Spectroelectrochemical Properties. ChemistrySelect 2023. [DOI: 10.1002/slct.202204598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
- Duygu Akyüz
- Department of Chemistry Faculty of Science Gebze Technical University Kocaeli Türkiye
| | - Ümit Demirbaş
- Department of Chemistry Faculty of Science Karadeniz Technical University Trabzon Türkiye
| | - Olcay Bekircan
- Department of Chemistry Faculty of Science Karadeniz Technical University Trabzon Türkiye
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Ding Z, Chen H, Han Y, Liu J. Molecular engineering of π-extended viologens consisting of quinoxaline-based bridges for tunable electrochromic devices. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133073] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Karaca H, Delibaş NÇ, Sağlam S, Pişkin H, Sezer S, Hökelek T, Teker M. Metallophthalocyanines derived with phenyl sulfide by bridging triazole using click chemistry: Synthesis, Computational Study, Redox Chemistry and Catalytic Activity. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130225] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Synthesis, electrochemical and in-situ spectroelectrochemical properties of 1,2,4 triazole containing metallo-phthalocyanines. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-01033-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Akyüz D, Demirbaş Ü, Akçay HT. Synthesis, characterization and electrochemistry of 1-phenoxypropan-2-yloxy substituted phthalocyanines. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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7
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Electrochemistry, electropolymerization and electrochromism of novel phthalocyanines bearing morpholine groups. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127674] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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