Preparation and Characterization of Cerium (III) Doped Captopril Nanoparticles and Study of their Photoluminescence Properties

Ghamami, Shahriar; Anari, Sanaz Kazemzade; Bakhshi, Masome; Lashgari, Amir; Salgado-Morán, Guillermo; Glossman‐Mitnik, Daniel

doi:10.1515/chem-2016-0008

Cited by 16 publications

(6 citation statements)

References 19 publications

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“…The identified peaks of PUF microcapsules with or without Ce(NO 3 ) 3 are at about 1550 cm –1 (N–H), 1640 cm –1 (CO), and 3330–3350 cm –1 (N–H, O–H) . In addition, as can be seen in FTIR curves of the microcapsules containing Ce(NO 3 ) 3 , the characteristics peaks at 1390 and 1600 cm –1 are associated with the presence of Ce(NO 3 ) 3 , which confirms the successful encapsulation of Ce(NO 3 ) 3 within PUF microcapsules.…”

Section: Resultssupporting

confidence: 62%

Encapsulation of Cerium Nitrate within Poly(urea-formaldehyde) Microcapsules for the Development of Self-Healing Epoxy-Based Coating

et al. 2021

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In order to study the release of cerium nitrate in a self-healing epoxy-based coating, poly (urea-formaldehyde) (PUF) microcapsules containing cerium nitrate were synthesized. The effects of healing agent concentration and weight percent of microcapsules in the epoxy resin were studied through the incorporation of microcapsules within an epoxy-based coating. The prepared microcapsules were characterized using thermogravimetric analysis and Fourier transform infrared spectroscopy and confirmed the successful encapsulation of cerium nitrate within PUF capsules. The self-healing performance of the prepared epoxy coating was investigated in 0.6 M NaCl solution using electrochemical impedance spectroscopy (EIS) tests. The EIS results indicated the successful release of encapsulated cerium nitrate from PUF microcapsules once the damage occurred in the epoxy coating, which led to effective self-healing of the epoxy-based coating. The presence of chlorine and cerium ions in the solution led to the precipitation of cerium hydroxides and oxides in the scratched area as a passive layer which hindered the corrosion in the damaged area. In addition, the EIS results showed that the healing performance of the coatings depends on the weight percent of microcapsules and the concentration of the self-healing agent. The highest self-healing performance was achieved for the maximum amount of microcapsule incorporation (10 wt %), while the increase in the microcapsule percent led to a decrease in the adhesion of the coating to the substrate.

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Section: Resultssupporting

confidence: 62%

Encapsulation of Cerium Nitrate within Poly(urea-formaldehyde) Microcapsules for the Development of Self-Healing Epoxy-Based Coating

et al. 2021

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“…Additionally, selenium is important for maintaining the maturation of T-cells and their functions, as well as for the production of T-cell based antibodies (Bae & Kim, 2020). Nanoparticles (NPs) are defined as particles less than 100 nm in diameter (Ghamami et al, 2016;Lashgari et al, 2015). NPs have many beneficial applications in many fields (Ananth et al, 2019;Gangadoo et al, 2019) to reduce toxicity, improve bioavailability, and control and maintain the release of magnifying materials in their effective forms (Khurana et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Production and use of eco‐friendly selenium nanoparticles in the fortification of yoghurt

Salama

El‐Sayed

Abd-Rabou

et al. 2021

J. Food Process. Preserv.

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Eco‐friendly selenium nanoparticles (SeNPs) were prepared by biological‐methods using three individual or mixed strains of lactobacilli, which were evaluated for yield, selenium content, and particle size. The prepared SeNPs were used to fortify yoghurt, and the product was evaluated for its chemical composition, rheological properties, and microbiological quality. The highest SeNPs yield was obtained using Lactobacillus casei (26.87 g/L), whereas L. acidophilus produced nanoparticles with a significantly high selenium content. The lowest particle size (131.0 nm) was found in eco‐friendly SeNPs produced using mixed strains followed by those produced using L. plantarum (146.2 nm), L. acidophilus (202.8 nm), and L. casei (271.3 nm). Adding eco‐friendly SeNPs had no notable effect on the chemical composition and texture of functional yoghurt. Eco‐friendly SeNPs powder prepared with L. plantarum had the highest viable count, whereas the lowest was obtained using the mixed culture. No cytotoxicity was observed in a tested colon cancer cell line for all prepared eco‐friendly SeNPs. Practical applications The methods used in the preparation of selenium nanoparticles using lactic acid bacteria are safe, cheap, and easy to apply. It can be applied on an industrial scale as one of the ingredients that can be used to safely support different foods. Selenium nanoparticle prepared in this way can be added in the fortification of milk, children's food, and also bakery products to meet their daily needs of the important selenium element. They can also be produced in tablets containing the daily dose of selenium and also supported by probiotic bacteria. Therefore, the method used to prepare selenium nanoparticle in this study is one of the most promising ways to be applied in different food products.

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“…Its generally intensive, parity allowed absorptions in the UV region, originating from 4f-5d transitions, make it possible to detect the electronic changes during complexation at relatively low concentrations. Cerium(III)-doped or based materials are among the most usable and efficient scintillators, owing to their fast and intensive fluorescence [3,4,5,6,7,8,9,10,11]. CeF 3 is one of the most investigated cerium(III) compounds because the fluoride ions can control the mobility of lanthanide ions in nature; besides, cerium(III) fluoride is less hygroscopic than, e.g., cerium(III) chloride.…”

Section: Introductionmentioning

confidence: 99%

Explanation for the Multi-Component Scintillation of Cerium Fluoride Through the Equilibrium and Photophysical Investigation of Cerium(III)-Fluoro Complexes

2019

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CeF3 displays favorable scintillation properties, which have been utilized for decades in various solid-state systems. Its emission undergoes multi-component decays, which were interpreted by lattice defects and so-called intrinsic features herein. This study of the complex equilibria in connection with photophysical behavior of the cerium(III)-fluoride system in solution gave us the possibility to reveal the individual contribution of the [CeIIIFx(H2O)9−x]3−x species to the photoluminescence. Spectrophotometry and spectrofluorometry (also in time-resolved mode) were used, and combined with sophisticated evaluation methods regarding both the complex equilibria and the kinetics of the photoinduced processes. The individual photophysical parameters of the [CeIIIFx(H2O)9−x]3−x complexes were determined. For the kinetic evaluation, three methods of various simplifications were applied and compared. The results indicated that the rates of some excited-state equilibrium processes were comparable to those of the emission decay steps. Our results also contribute to the explanation of the multi-component emission decays in the CeF3-containing scintillators, due to the various coordination environments of Ce3+, which can be affected by the excitation leading to the dissociation of the metal-ligand bonds.

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Preparation and Characterization of Cerium (III) Doped Captopril Nanoparticles and Study of their Photoluminescence Properties

Cited by 16 publications

References 19 publications

Encapsulation of Cerium Nitrate within Poly(urea-formaldehyde) Microcapsules for the Development of Self-Healing Epoxy-Based Coating

Encapsulation of Cerium Nitrate within Poly(urea-formaldehyde) Microcapsules for the Development of Self-Healing Epoxy-Based Coating

Production and use of eco‐friendly selenium nanoparticles in the fortification of yoghurt

Explanation for the Multi-Component Scintillation of Cerium Fluoride Through the Equilibrium and Photophysical Investigation of Cerium(III)-Fluoro Complexes

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