104-38-1Relevant articles and documents
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Read,Miller
, p. 1195 (1932)
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Ultrasensitive electrochemical detection of methyl parathion pesticide based on cationic water-soluble pillar[5]arene and reduced graphene nanocomposite
Tan, Xiaoping,Liu, Yan,Zhang, Tingying,Luo, Shasha,Liu, Xi,Tian, Hexiang,Yang, Yang,Chen, Chunlian
, p. 345 - 353 (2019)
We report a rapid, sensitive and selective electrochemical sensor based on pillar[5]arene (CP5) reduced graphene (rGO) nanohybrid-modified glassy carbon electrode CP5-rGO/GCE for the trace detection of methyl parathion (MP) by differential pulse voltammetry (DPV) for the first time. Compared to beta-cyclodextrin (β-CD)-functionalized reduced graphene (rGO)-modified GCE β-CD-rGO/GCE, the proposed CP5-rGO/GCE sensor exhibits excellent electrochemical catalytic activity, rapid response, high sensitivity, good reproducibility and anti-interference ability towards MP. The recognition mechanism of β-CD/MP and CP5/MP was studied by 1H NMR. The results indicate a higher supramolecular recognition capability between CP5 and MP compared to that between β-CD and MP. The β-CD-rGO and CP5-rGO nano-composites were prepared via a wet chemistry approach. The resulting nano-composites have been characterized by thermogravimetric analysis (TGA), fourier transform infrared spectrometry (FTIR), charge transfer resistance (Rct) and zeta potential. The CP5-rGO/GCE combines the merits of CP5 and rGO, and is used for quantitative detection of MP. It has a low detection limit of 0.0003 μM (S/N = 3) and a linear response range of 0.001-150 μM for MP. This method has been used to detect MP in soil and waste water samples with satisfactory results. This study provides a promising electrochemical sensing platform and is a promising tool for the rapid, facile and sensitive analysis of MP.
Method for synthesizing hydroquinone dihydroxyl diethyl ether
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Paragraph 0023; 0057; 0058; 0059, (2016/11/17)
The invention relates to a method for synthesizing hydroquinone dihydroxyl diethyl ether and belongs to the technical field of synthesis of organic compounds. The method comprises the steps: carrying out synthesis by taking hydroquinone and epoxyethane as raw materials, adding hydroquinone, a ferrocene catalyst and an ether solvent into a reactor, carrying out vacuumizing, heating the reactor until hydroquinone is completely dissolved in the ether solvent under nitrogen protection, then, adding a chain extender into the reactor, heating the reactor to a polymerization reaction temperature, and carrying out hydroquinone dihydroxyl diethyl ether synthesis under polymerization reaction pressure; and after the reaction ends, carrying out cooling, and subjecting crystallizing mother liquor to normal-pressure or reduced-pressure rectification, so as to separate out the ether solvent. The hydroquinone dihydroxyl diethyl ether is synthesized by the method, the problems in the conventional technologies that the preparation process is complicated and the quality of product is poor are solved, and the obtained product is reasonable in distribution, light in color and luster and low in byproduct content.
Synthesis of new cores and their use in the preparation of polyester dendrimers
Twibanire, Jean-D'Amour K.,Al-Mughaid, Hussein,Grindley, T. Bruce
experimental part, p. 9602 - 9609 (2011/01/03)
Six dendrimer and dendron cores terminated by hydroxyl groups that are neither phenolic nor cleavable by hydrogenolysis have been prepared in a consistent one-pot manner from terminal allyl groups by reduction of the product of reductive ozonolysis. Some of the terminal allyl derivatives are new and others have been prepared by new methods. The well-known O-benzylidene derivative of 2,2′-bis(hydroxymethyl)propanoic acid was shown to be the cis-stereoisomer. A new AB3-type anhydride, tris(benzyloxymethyl) acetic anhydride has been prepared. It was demonstrated that these cores and dendrons could be assembled into first and second generation homo- and mixed polyester dendrimers.