Here a ligand exchange strategy for synthesizing sol-gel oxides is demonstrated to achieve multifunctionality including direct photolithography, high dielectric strength, and high charge carrier mobility, which is challenging to obtain in such oxides. For this purpose, a series of bidentate ligands with azide termini and ethylene-glycol bridges is synthesized, and these ligands are universally applicable to the synthesis of a variety of dielectric and semiconductor oxides. Optimized photolithography conditions yield a high-quality ZrO dielectric film with a high dielectric constant and strength of ≈18 and ≈7 MV cm, respectively. Additionally, this strategy is applied to semiconductor oxides such as InO and ZnO, and the all-oxide-patterned solution-processed thin-film transistor (TFT) demonstrates a high charge carrier mobility of ≈40 cm V s. An oxide TFT array is fully photopatterned on a 4-inch Si wafer; uniform performances are observed across these devices. This study suggests the possibility of realizing multifunctional oxides for application in advanced electronics using simple ligand exchange chemistry.
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http://dx.doi.org/10.1002/adma.202409906 | DOI Listing |
J Colloid Interface Sci
December 2024
Key Laboratory of Geriatric Nutrition and Health, Ministry of Education, Beijing Technology and Business University, 11 Fucheng Road, Haidian District, Beijing 100048, PR China. Electronic address:
Intractable infected wound caused by drug-resistant bacteria remains a severe healthcare problem. Reactive oxygen species (ROS)-based nanocatalytic therapy (ROS-NT) is harnessed to combat drug-resistant bacterial infection. However, it can also cause immune imbalance and excessive inflammatory responses, postponing subsequent wound healing process.
View Article and Find Full Text PDFInorg Chem
December 2024
Facultad de Farmacia, Departamento de Química y Bioquímica, Urbanización Montepríncipe, Universidad San Pablo-CEU, CEU Universities, Boadilla del Monte, E-28668 Madrid, Spain.
Lanthanum strontium ferrite (LaSrAgFeO = 0; LSFO) and its silver-doped derivative (LaSrAgFeO = 0.05; LASFO) are synthesized using mild conditions by a sol-gel method. Both oxides present a perovskite-like structure with orthorhombic symmetry due to octahedral tilting; thus, the incorporation of silver in the A-site does not significantly modify the perovskite structure.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Street, 90-236 Lodz, Poland.
Chitosan, a biopolymer derived from chitin, exhibits significant antifungal properties, making it a valuable compound for various applications in agriculture food preservation, and biomedicine. The present study aimed to assess the antifungal properties of chitosan-modified films using sol-gel derivatives (CS:ZnO) or graphene-filled chitosan, (CS:GO and CS:rGO) against two strains of fungi that are the most common cause of food spoilage: ATCC 9643 and DSM 1282. The results indicate important differences in the antifungal activity of native chitosan films and zinc oxide-modified chitosan films.
View Article and Find Full Text PDFInt J Mol Sci
November 2024
Department of Solid-State Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russia.
This paper presents the results of a study on the characteristics of semiconductor sensors based on thin SnO films modified with antimony, dysprosium, and silver impurities and dispersed double Pt/Pd catalysts deposited on the surface to detect carbon monoxide (CO). An original technology was developed, and ceramic targets were made from powders of Sn-Sb-O, Sn-Sb-Dy-O, and Sn-Sb-Dy-Ag-O systems synthesized by the sol-gel method. Films of complex composition were obtained by RF magnetron sputtering of the corresponding targets, followed by technological annealing at various temperatures.
View Article and Find Full Text PDFNanomaterials (Basel)
December 2024
Univ. Lille, CNRS, UMR 8523-Physique des Lasers Atomes et Molécules (PhLAM), F-59000 Lille, France.
Multicomponent oxide systems have many applications in different fields such as optics and medicine. In this work, we developed new hybrid photoresists based on a combination of an organic acrylate resin and an inorganic sol, suitable for 3D printing via two-photon polymerization (2PP). The inorganic sol contained precursors of a binary SiO-CaO or a ternary SiO-CaO-PO system.
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