The present investigation deals with synthesis of graphene oxide (GO) and fabrication of GO-based hybrid nanocomposites (Ncs). Synthesized GO and Ncs were primarily confirmed by UV visible and Fourier transform infrared (FT-IR) spectroscopy. Fabricated Ncs showed potential antimicrobial activity against Gram-positive and Gram-negative bacterial strains. Surface morphology, Elemental analysis, and FTIR imaging analysis were carried out to confirm Ncs formation. The Ncs were impregnated into the pullulan polymeric layer-by-layer (LbL) ultrathin film by using novel spin-coating approach. Mechanical properties were determined using Brookfield texture analyzer, and percentage moisture content confirmed the physicochemical stability of LbL film.
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http://dx.doi.org/10.1080/21691401.2016.1252384 | DOI Listing |
Int J Biol Macromol
December 2024
Department of Materials Science and Engineering, Faculty of Engineering & Technology, Tarbiat Modares Universirty, Tehran, Iran.
One of the most effective ways to solve the problems caused by the presence of steel implants in the body is to apply a coating to them. This study aims to develop and optimize composite coatings of magnesium oxide (MgO), 58S bioactive glass (BG), and N-carboxymethyl chitosan (N-CMC) on stainless steel (SS316L) substrates using the electrophoretic deposition (EPD) method. The synthesized materials were characterized using FTIR, XRD, and SEM to confirm their structure and morphology prior to coating.
View Article and Find Full Text PDFJ Autism Dev Disord
December 2024
School of Information Science and Engineering, Yanshan University, Qinhuangdao, 066004, China.
Autism spectrum disorder (ASD) has been reported to exhibit altered local functional consistency. However, previous studies mainly focused on male samples and explored the temporal consistency in the ASD brain ignoring the spatial consistency. In this study, FOur-dimensional Consistency of local neural Activities (FOCA) analysis was used to investigate the sex differences of local spatiotemporal consistency of spontaneous brain activity in ASD.
View Article and Find Full Text PDFLangmuir
December 2024
Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China.
Due to intrinsic defects in blue-light-emitting perovskite materials, the charge carriers are prone to being trapped by the trap states. Therefore, the preparation of efficient blue-light-emitting perovskite materials remains a significant challenge. Herein, CsPb(Cl/Br) nanocrystal (NCs)@SiO structures were fabricated through hydrolyzing (3-aminopropyl)-triethoxysilane (APTS).
View Article and Find Full Text PDFMar Drugs
December 2024
Interdepartmental Centre of Environmental Science and Engineering (CINSA), University of Cagliari, Via San Giorgio 12, 09124 Cagliari, Italy.
The green synthesis of silver (Ag) and zinc oxide (ZnO) nanoparticles (NPs), as well as Ag/AgO/ZnO nanocomposites (NCs), using polar and apolar extracts of , offers a sustainable method for producing nanomaterials with tunable properties. The impact of the synthesis environment and the nanomaterials' characteristics on cytotoxicity was evaluated by examining reactive species production and their effects on mitochondrial bioenergetic functions. Cytotoxicity assays on PC12 cells, a cell line originated from a rat pheochromocytoma, an adrenal medulla tumor, demonstrated that Ag/AgO NPs synthesized with apolar (Ag/AgO NPs A) and polar (Ag/AgO NPs P) extracts exhibited significant cytotoxic effects, primarily driven by Ag ion release and the disruption of mitochondrial function.
View Article and Find Full Text PDFBiosensors (Basel)
December 2024
School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea.
Metal nanoclusters (NCs) are promising alternatives to organic dyes and quantum dots. These NCs exhibit unique physical and chemical properties, such as fluorescence, chirality, magnetism and catalysis, which contribute to significant advancements in biosensing, biomedical diagnostics and therapy. Through adjustments in composition, size, chemical environments and surface ligands, it is possible to create NCs with tunable optoelectronic and catalytic activity.
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