The Sn(IV)-tetra(4-sulfonatophenyl) porphyrin complexes with antioxidants: Synthesis, structure, properties

Мамардашвили, Г. М.; Lazovskiy, Dmitriy A.; Maltceva, Olga V.; Мамардашвили, Н. Ж.; Койфман, О. И.

doi:10.1016/j.ica.2018.11.003

Cited by 10 publications

(4 citation statements)

References 42 publications

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“…Strong quenching of the fluorescence ( Figure 11 ) of complexes I and II in comparison with bis-hydroxy-5,10,15,20-tetra-(4-sulfonatophenyl)porphyrin-Sn(IV) (III), according to the literature data [ 62 , 63 ] and the results of our own studies [ 64 , 65 ], is caused by the interaction of the closely spaced aromatic systems of the ligand and porphyrin macrocycle (in complex I, the inclination angle of the axial ligand aromatic part to the porphyrin plane was31°, while in complex II, it was 50°). The results of the quantum chemical calculations show ( Figure 2 , Table 1 ) that as dimeric structures were formed, the inclination angle of the phenolate fragment of the ligands relative to the porphyrin plane increased (the angle became close to 90°).…”

Section: Resultssupporting

confidence: 57%

New Polyporphyrin Arrays with Controlled Fluorescence Obtained by Diaxial Sn(IV)-Porphyrin Phenolates Chelation with Cu2+ Cation

et al. 2021

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New coordination oligomers and polymers of Sn(IV)-tetra(4-sulfonatophenyl)porphyrin have been constructed by the chelation reaction of its diaxialphenolates with Cu2+. The structure and properties of the synthesized polyporphyrin arrays were investigated by 1H Nuclear Magnetic Resonance (1H NMR), Infra Red (IR), Ultra Violet - Visible (UV-Vis) and fluorescence spectroscopy, mass spectrometry, Powder X-Rays Diffraction (PXRD), Electron Paramagnetic Resonance (EPR), thermal gravimetric, elemental analysis, and quantum chemical calculations. The results show that the diaxial coordination of bidentate organic ligands (L-tyrazine and diaminohydroquinone) leads to the quenching of the tetrapyrrole chromophore fluorescence, while the chelation of the porphyrinate diaxial complexes with Cu2+ is accompanied by an increase in the fluorescence in the organo-inorganic hybrid polymers formed. The obtained results are of particular interest to those involved in creating new ‘chemo-responsive’ (i.e., selectively interacting with other chemical species as receptors, sensors, or photocatalysts) materials, the optoelectronic properties of which can be controlled by varying the number and connection type of monomeric fragments in the polyporphyrin arrays.

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Section: Resultssupporting

confidence: 57%

New Polyporphyrin Arrays with Controlled Fluorescence Obtained by Diaxial Sn(IV)-Porphyrin Phenolates Chelation with Cu2+ Cation

et al. 2021

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“…Such upfield shift of the protons in the axial groups is due to the strong shielding effect of the ring current in the aromatic macrocycles. 49,50 The signals of ortho -protons are shifted upfield by ∼4.2 ppm and are additionally split due to spin–spin interactions with phosphorus ion. Similar shifts and splitting were observed in the case of aryloxy-substituted P V porphyrins.…”

Section: Resultsmentioning

confidence: 99%

Phosphorus(v) tetrapyrazinocorrolazines bearing axial aryloxy groups as pH-sensitive fluorophores and photosensitizers

et al. 2022

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“…Our research over the past decade has been focused on the systematic development of new porphyrins of complex structure that exhibit sensing and binding properties in solutions [1][2][3][4]. At the same time, the analysis of literature data and our own research results show that along with sensing properties porphyrins may have a high ability to supramolecular self-assembly [1][2][3][4][5]. Molecular selfassembly is the formation process of a complex ordered supramolecular structure, in which the structure of "assembling" molecules remains almost unchanged [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Sensing Ability of Zn-Tetraphenylporphyrin Langmuir-Schaefer Films

Maltсeva,

Nikitin,

Kazak

et al. 2023

Liq. Cryst. and their Appl.

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The floating layers formation conditions of Zn(II)-5,10,15,20tetraphenylporphyrin (ZnTPP) at the air/water interface and Langmuir-Schaefer films (LS-films) obtained on glass and silicon substrates have been studied. The floating layers were modeled and the geometric characteristics of molecular packings on water surface were calculated. It was shown that the area per molecule in the dense face-on packing of a monolayer is 1.69 nm 2 , and in the edge-on packing -0.90 nm 2 . Analysis of the floating layer compression isotherm revealed that ZnTPP molecules are arranged face-on to the interface plane. Electron absorption spectroscopy showed that LS-films contain aggregates of J-type. The surface morphology of LS-films studied by AFM revealed that the average roughness of LS-films increases by 1.4 times with an increase in the number of transfers from one to five. The sensing properties of the LS-films (with 15 transfers) with respect to hydroxypyridine and pyridine in aqueous and gaseous media, correspondingly, have been studied. It was established that the LS-film is sensitive to pyridine vapors. The results obtained can be used to create selective sensors for environmental pollution monitoring.

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The Sn(IV)-tetra(4-sulfonatophenyl) porphyrin complexes with antioxidants: Synthesis, structure, properties

Cited by 10 publications

References 42 publications

New Polyporphyrin Arrays with Controlled Fluorescence Obtained by Diaxial Sn(IV)-Porphyrin Phenolates Chelation with Cu2+ Cation

New Polyporphyrin Arrays with Controlled Fluorescence Obtained by Diaxial Sn(IV)-Porphyrin Phenolates Chelation with Cu2+ Cation

Phosphorus(v) tetrapyrazinocorrolazines bearing axial aryloxy groups as pH-sensitive fluorophores and photosensitizers

Sensing Ability of Zn-Tetraphenylporphyrin Langmuir-Schaefer Films

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