We report here a novel in-situ synthetic method for the preparation of poly (o-methoxyaniline) and palladium nanoparticle composite material. Ortho-Methoxyaniline and palladium acetate were used as the precursors; during the reaction o-methoxyaniline was oxidized and forms poly (o-methoxyaniline) and palladium acetate is reduced forming palladium nanoparticles. IR and Raman spectra provide information on the structure of the polymer. The TEM and SEM analysis are used to determine the size of the nanoparticles and the morphology of the polymer respectively.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1140/epje/e2006-00027-2 | DOI Listing |
Molecules
September 2022
Department of Physics, Federal University of Amazonas, Manaus 69067-005, AM, Brazil.
The temperature dependence of the electrical properties of composites formed by biphasic sodium titanate and poly(-methoxyaniline) (NaTiO/NaTiO/POMA) with different concentrations of POMA (0%, 1%, 10%, 15%, 35% and 50%) in the ceramic matrix was determined from measurements of complex impedance. The structural details were studied by means of X-ray diffraction, confirming the formation of the NaTiO/NaTiO/POMA composites. The displacement of the (200) reflection from 2θ = 10.
View Article and Find Full Text PDFMolecules
June 2022
Laboratory of Nanostructured Polymers (NANOPOL-@nanopol_ufam), Federal University of Amazonas (UFAM), Manaus 69067-005, AM, Brazil.
Poly(-methoxyaniline) emeraldine-salt form (ES-POMA) was chemically synthesized using hydrochloric acid and subjected to a heat treatment (HT) process for 1 h at 100 °C (TT) and 200 °C (TT). The HT process promoted a progressive decrease in crystallinity. The Le Bail method revealed a decomposition from tetrameric to trimeric-folded chains after the HT process.
View Article and Find Full Text PDFAnal Chim Acta
March 2022
Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, China. Electronic address:
The o-methoxyaniline (OMA) monomer was polymerized in-situ by vapor phase polymerization to form uniform and dense poly-o-methoxyaniline (POMA) film on the surface of ZnO nanorods array film which was pre-prepared by hydrothermal method. The as-prepared POMA/ZnO composite shows the best response at 40 min of vapor phase polymerization time. The response to 100 ppm ammonia at 25 °C is 8.
View Article and Find Full Text PDFMikrochim Acta
August 2020
Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, China.
Poly-o-methoxyaniline (POMA) and zinc oxide (ZnO) composites were prepared via in situ polymerization and characterized by thermogravimetry thermal analysis, X-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and N sorption measurement. The composites show different morphology when the ratio of POMA and ZnO varies. At a ratio of 2:2, the composite shows thinner nanosheet structure with smooth surface and exhibits best response to NH at room temperature.
View Article and Find Full Text PDFMater Sci Eng C Mater Biol Appl
October 2018
Materials Science Centre, Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai 600025, India. Electronic address:
Dopamine (DA) and Folic acid (FA) are co-existing compounds in biological fluids that plays a vital role in central nervous system and human metabolism. DA is an important neurotransmitter in the brain's neural circuits and its diminution often results in Parkinson's disease. Folate is another form of folic acid, which is known as one of the B vitamins.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!