Composites based on graphite oxide and zirconium phthalocyanines with aromatic amino acids as photoactive materials

Gerasymchuk, Yuriy; Tahershamsi, Leili; Tomala, Robert; Wedzynska, Anna; Chernii, Viktor; Tretyakova, Iryna; Korona-Głowniak, Izabela; Rajtar, Barbara; Malm, Anna; Piątek, Dominika; Łukowiak, Anna

doi:10.1007/s11696-021-01731-7

Cited by 4 publications

(4 citation statements)

References 38 publications

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“…Graphite oxide (GO) with a high level of oxidation (general formula CO 0.5 H 0.2 ), as a precursor for composite, was obtained by modified Brodie method [31] from synthetic graphite (conducting grade, 200 mesh, 99.9995%, Alfa-Aesar, USA) by fourfold oxidation with potassium chlorate (99 + %, Alfa-Aesar, USA) in fumed nitric acid (98-100%, Merck, USA), and with washing with 1 M hydrochloric acid (Avantor, Poland) and distilled and deionized water until the filtrate has a neutral pH, and finally dried in a laboratory dryer with forced air circulation [32][33][34][35]. The graphite oxide obtained is a light beige powder.…”

Section: Obtaining Of Graphite Oxidementioning

confidence: 99%

“…The high oxidation level of graphite oxide caused the high catalytic activity of obtained material due to the small linear dimensions and high degree of delamination of the material during reduction, which creates a very extensive specific surface, which is very important when using this material as a catalyst. The structure and morphology of obtained graphite oxide were confirmed by scanning electron microscopy (FESEM, FEI Nova NanoSEM 230 with EDS detector) with EDX analysis, powder X-ray diffraction pattern (PANalytical X'Pert Pro diffractometer) and Raman spectroscopy (Raman microscope inVia by Renishaw, supported with CCD camera as a detector, and laser lines 488 nm, 514 nm and 830 nm, as a source of excitation; range of measurement: 100-3200 cm −1 ), FTIR spectroscopy (FT-IR spectrometer Biorad 575C, probes were measured in KBr pellets) and in details described in our previous works [33][34][35].…”

Section: Obtaining Of Graphite Oxidementioning

confidence: 99%

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Liquid “Syngas” Based on Supercritical Water and Graphite Oxide/TiO2 Composite as Catalyst for CO2 to Organic Conversion

2021

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The conversion of carbon monoxide into organic substances is one of the top topics of modern science due to the development of industry and the climate changes caused by it on the one hand, and the possibility of obtaining an economic effect on the other, as it could allow for partial recovery of fuels. A problem in this regard has always been the low solubility of CO2 in water, which eliminated the possibility of easy converting carbon dioxide into the liquid. The development of research on water critical states revealed the fact that water in a subcritical state has a much higher ability to dissolve gases. And this effect was used to obtain the "liquid synthesis gas" model presented in this paper. Equally important was the selection of an appropriate catalyst that would increase the efficiency of the conversion process by generating hydrogen in the system under the influence of cold plasma. In this work we present the studies of transformation of CO2 dissolved in supercritical water using partially reduced graphite oxide—nanometric titania composite (RGO-TiO2) as catalyst, due to the ability of RGO to generate hydrogen in the water environment (water splitting) under the influence of various physical factors, especially cold plasma. The RGO catalyst was stabilized with titanium oxide to obtain higher activity at lower RGO concentrations in the system. Therefore, research on conversions was preceded by a thorough analysis of CO2 solubility in supercritical water, as well as an analysis of the structural, morphological, and spectroscopic properties of the catalyst. Graphic Abstract General scheme of cold plasma reactor.

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Section: Obtaining Of Graphite Oxidementioning

confidence: 99%

Section: Obtaining Of Graphite Oxidementioning

confidence: 99%

Liquid “Syngas” Based on Supercritical Water and Graphite Oxide/TiO2 Composite as Catalyst for CO2 to Organic Conversion

2021

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“…Due to the ease of the structural modification of Pcs, these macromolecules can be designed for special applications [29–32] . Additionally, axially substituted phthalocyanines bearing various ligand(s) on the metal center have attracted attention in recent years [33–36] . Among the axially substituted Pcs, silicon phthalocyanines (SiPcs) exhibit excellent biological properties owing to the unusual six‐coordinated silicon (IV) ion and the possibility of symmetrically or unsymmetrically replacement of different axial ligands [37,38] .…”

Section: Introductionmentioning

confidence: 99%

“…[29][30][31][32] Additionally, axially substituted phthalocyanines bearing various ligand(s) on the metal center have attracted attention in recent years. [33][34][35][36] Among the axially substituted Pcs, silicon phthalocyanines (SiPcs) exhibit excellent biological properties owing to the unusual six-coordinated silicon (IV) ion and the possibility of symmetrically or unsymmetrically replacement of different axial ligands. [37,38] Generally, amine, carboxylic, or sulfonic groups result in water-soluble phthalocyanines.…”

Section: Introductionmentioning

confidence: 99%

Silicon Phthalocyanines as Anti‐infectious, Antioxidant, and Anticancer Agents

Yenilmez¹,

Farajzadeh²,

Tollu³

et al. 2023

ChemistrySelect

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This study reports the synthesis of three silicon phthalocyanines (SiPc1–3) bearing 2‐dimethylaminoethoxy, 2‐[2‐(dimethylamino)ethoxy]ethoxy, or 2‐{2‐[2‐(dimethylamino)ethoxy]ethoxy}ethoxy on axial positions. Also, their quaternized derivatives (SiPcQ1–3) were prepared. The effect of ligand length on the biological features of water‐soluble silicon phthalocyanines (SiPcQ1–3) was investigated. The highest antimicrobial activity was obtained 32 μg/mL for SiPcQ1 against double‐distilled water, E. hirae, and E. faecalis. The growth inhibition percentages of compounds SiPcQ1–3 were obtained 100 %, 100 %, and 85.14 %, respectively. The highest biofilm inhibition activity was obtained 86.16 % for 250 mg/L SiPcQ3 against S. aureus. The E. coli growth inhibition activities of 50 mg/L compounds SiPcQ1–3 ranged from 60.17 % to 87.53 % and their activities increased (73.46 %–95.37 %) by the enhancement of the concentration. The E. coli viability inhibition activities of SiPcQ1–3 were concentration‐dependent. The DNA cleavage and binding properties of SiPcQ1–3 were studied using pBR322 DNA and CT‐DNA, respectively. Besides, the toxicity of SiPcQ1–3 was examined against the human colon cancer cell line (DLD‐1). The IC50 values of compounds (SiPcQ1–3) were obtained between 10.12 and 27.06 μM in the dark, however, these values were calculated between 12.32 and 22.17 μM under the light. SiPcQ3 exhibited the highest in vitro anticancer activity against the tested cell.

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Effect of Axial Ligand Length on Biological and Anticancer Properties of Axially Disubstituted Silicon Phthalocyanines

Yenilmez

Farajzadeh

Kuşçulu

et al. 2023

Chemistry & Biodiversity

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In this study, three new axially disubstituted silicon phthalocyanines (SiPc1-3) and their quaternized phthalocyanine derivatives (QSiPc1-3) were prepared and characterized. The biological properties (antioxidant, antimicrobial, antibiofilm, and microbial cell viability activities) of the water-soluble silicon phthalocyanines were examined, as well. A 1 % DMSO diluted with pure water was used as a solvent in biological activity studies. All the compounds exhibited high antioxidant activity. They displayed efficient antimicrobial and antimicrobial photodynamic therapeutic properties against various microorganisms, especially Gram (+) bacteria. Additionally, they demonstrated high antibiofilm activities against S. aureus and P. aeruginosa. In addition, 100 % bacterial reduction was obtained for all the studied phthalocyanines against E. coli viable cells. Besides, the DNA cleavage and binding features of compounds (QSiPc1-3) were studied using pBR322 DNA and CT-DNA, respectively. Furthermore, the human topoisomerase I enzyme inhibition activities of compounds QSiPc1-3 were studied. Anticancer properties of the water-soluble compounds were investigated using cell proliferation MTT assay. They exhibited anticarcinogenic activity against the human colon cancer cell line (DLD-1). Compounds QSiPc1 and QSiPc3 displayed a high anticarcinogenic effect on the DLD-1 cell line. The obtained results indicated that all the studied compounds may be effective biological agents and anticancer drugs after further investigations.

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Composites based on graphite oxide and zirconium phthalocyanines with aromatic amino acids as photoactive materials

Cited by 4 publications

References 38 publications

Liquid “Syngas” Based on Supercritical Water and Graphite Oxide/TiO2 Composite as Catalyst for CO2 to Organic Conversion

Liquid “Syngas” Based on Supercritical Water and Graphite Oxide/TiO2 Composite as Catalyst for CO2 to Organic Conversion

Silicon Phthalocyanines as Anti‐infectious, Antioxidant, and Anticancer Agents

Effect of Axial Ligand Length on Biological and Anticancer Properties of Axially Disubstituted Silicon Phthalocyanines

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