Surface film application method
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In this paper, we report a simple, low-cost, and environmentally friendly electrochemical method to obtain a novel copolymer consisting of 1-pyrenyl-2,5-di(2-thienyl)pyrrole and pyrrole on a pencil graphite electrode (PGE). Poly(1-pyrenyl)-2,5-di(2-thienyl)pyrrole-co-pyrrole) that is P(PyrPy-co-Py) film was prepared by one-step potentiostatic codeposition in an ethanol solution containing PyrPy and Py monomers for supercapacitor applications. The electrodeposition of homopolymer and copolymer modified electrodes was carried out on the surface of the PGE via chronocoulometry.
16p tudichquannguyet 29-11-2021 7 1 Download
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The insecticidal and repellent activities were observed by residual film method and surface film application methods respectively. Leaf, stem and root of Mimosa pudica L. were screened through Petroleum ether, chloroform, ethyl acetate and methanol extracts against flat grain beetle, Cryptolestes pusillus (Schon.).
14p trinhthamhodang9 16-12-2020 13 2 Download