Sensitization of ZnO nanoparticles by metal–free phthalocyanine

Gharagozlou, Mehrnaz; Naghibi, Sanaz

doi:10.1016/j.jlumin.2017.12.020

Cited by 11 publications

(10 citation statements)

References 30 publications

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“…The absorptions present at 1086 and 1118 cm –1 were due to C–N stretching and C–H in-plane bending vibrations, respectively, of CoPc . The pyrrole C–C stretching tied-up with aza rocking was displayed at 1331 cm –1 , and C–H deformation was observed at 1288 cm –1 . The band at 1424 cm –1 was due to C–C benzene ring skeletal stretching vibrations, and the band at 1521 cm –1 was due to stretching of the pyrrole ring …”

Section: Resultsmentioning

confidence: 98%

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Cobalt Phthalocyanine-Sensitized Graphene–ZnO Composite: An Efficient Near-Infrared-Active Photothermal Agent

Neelgund

Oki

2019

ACS Omega

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Herein, a promising near-infrared-responsive photothermal agent was designed by anchoring of rice grain-shaped ZnO particles over graphene (GR) nanosheets and subsequent sensitization with cobalt phthalocyanine (CoPc). Thus, produced GR–ZnO–CoPc was able to attain the temperature of 68 °C by irradiating to 980 nm laser for 7 min, which is extremely higher than the endurance temperature of cancer cells. The linear fashioned progression in the photothermal effect of GR nanosheets was conquered by immobilization of ZnO particles and successive sensitization with CoPc. The excellence found in the photothermal effect of GR–ZnO–CoPc was verified by estimation of its photothermal conversion efficiency. The photothermal conversion efficiency assessed for GR–ZnO–CoPc was higher than those for the popular gold- and CuS-based photothermal agents. In addition, it possessed significant stability against photobleaching and structural rupture. It was found that the photothermal effect of GR–ZnO–CoPc is proportional to its concentration. However, by replacement of a 980 nm laser system with 808 nm, the photothermal effect of GR–ZnO–CoPc was reduced, which could be due to lower absorption of GR–ZnO–CoPc at 808 nm compared to 980 nm. On account of its significance and important properties, GR–ZnO–CoPc could be an interesting photothermal agent to employ in future photothermal therapy for cancer.

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Section: Resultsmentioning

confidence: 98%

“…26 The band at 1424 cm –1 was due to C–C benzene ring skeletal stretching vibrations, and the band at 1521 cm –1 was due to stretching of the pyrrole ring. 26…”

Section: Resultsmentioning

confidence: 99%

Cobalt Phthalocyanine-Sensitized Graphene–ZnO Composite: An Efficient Near-Infrared-Active Photothermal Agent

Neelgund

Oki

2019

ACS Omega

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“…The preparation of ceramic NPs is a hot topic, and several methods have been reported for this purpose . ZnO as a semiconductor ceramic finds several applications in light emission, biosensors, and solar cells Therefore, several methods have been developed to enhance their properties and performance . Green chemistry is one of the new methods that is utilized for the preparation of ZnO NPs.…”

Section: Introductionmentioning

confidence: 99%

Water‐based synthesis of ZnO nanoparticles via decomposition of a ternary zinc complex containing Schiff‐base, chelating, and Phen ligands

Gharagozlou

Naghibi

Ataei

2018

J Chinese Chemical Soc

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The recent environmental awareness has been the motivation for the growing preference for environmentally friendly and water‐based systems in chemical synthesis. In the present work, ZnO nanoparticles were synthesized via a novel method without any water‐insoluble compounds. At the first step, a binary Zn Schiff‐base complex was prepared from sodium salicylaldehyde‐5‐sulfonate, L‐alanine, and zinc acetate. Then, a ternary Zn complex containing the Schiff‐base, chelating, and Phen ligands was synthesized from the as‐synthesized binary Zn Schiff base and 1,10‐phenanthroline monohydrate. This intermediate product showed high water solubility and long‐term stability. Finally, ZnO nanoparticles were synthesized through the calcination of the ternary complex powder at 400, 500, and 600 °C. Combining X‐ray diffraction (XRD) and energy dispersive spectroscopy (EDS) results, it was concluded that the samples contained the ZnO phase without any impurity phases, but Fourier transform infrared (FTIR) spectra implied the presence of a remaining impurity. According to the XRD, FTIR, and photoluminescence (PL) analyses, the as‐synthesized samples differed in terms of the defect content and lattice strain. The sample calcined at 500 °C possessed the lowest defect content and lattice strain. Transmission electron microscopy (TEM) imaging revealed the formation of ZnO nanoparticles with particles sizes of <20, ~50, and ~100 nm for samples heat‐treated at the different temperatures.

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“…The observed bands and their assignments are as follows: the bands detected at 421 and 1055 cm -1 are associated with Zn-O bonds belonging to the ZnO structure [60,61]. The weak bands for each sample detected at about 2000-2400 cm -1 are related to the stretching mode of C-O bond of CO2 group, and another one observed at 2921 cm -1 is attributed to the stretching vibration modes of C-H bond, most probably arising from trace content of urea which was used a fuel for the combustion reaction [62,63].…”

Section: B Ftir Resultsmentioning

confidence: 91%

Y Katkılı Piramit ZnO Tozlarının Sentez ve Karakterizasyonu

Kayğili

Kebiroglu

Bulut

et al. 2020

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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The present study focuses on the structural changes in ZnO powder induced by doping of a rare earth metal of Y. For this aim, we synthesized four ZnO samples with different Y-content using the combustion reaction method. X-ray powder diffraction (XRPD) technique and scanning electron microscopy (SEM) results confirm that the asinvestigated structural parameters and morphology of the ZnO structure were affected directly by the concentration of Y dopant. For each Y-doped sample, randomly-oriented pyramidal morphology and the formation of a minority phase of Y2O3 were observed. A gradual increase in both lattice parameters and unit cell volume was detected with increasing Y content. All samples were found to be thermally stable in the temperature interval of 25-950 °C.

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Sensitization of ZnO nanoparticles by metal–free phthalocyanine

Cited by 11 publications

References 30 publications

Cobalt Phthalocyanine-Sensitized Graphene–ZnO Composite: An Efficient Near-Infrared-Active Photothermal Agent

Cobalt Phthalocyanine-Sensitized Graphene–ZnO Composite: An Efficient Near-Infrared-Active Photothermal Agent

Water‐based synthesis of ZnO nanoparticles via decomposition of a ternary zinc complex containing Schiff‐base, chelating, and Phen ligands

Y Katkılı Piramit ZnO Tozlarının Sentez ve Karakterizasyonu

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