Water compatible stir-bar devices imprinted with underivatised glyphosate for selective sample clean-up was written by Gomez-Caballero, Alberto;Diaz-Diaz, Goretti;Bengoetxea, Olatz;Quintela, Amaia;Unceta, Nora;Goicolea, M. Aranzazu;Barrio, Ramon J.. And the article was included in Journal of Chromatography A in 2016.Reference of 4074-88-8 This article mentions the following:
This paper reports the development of stir bars with a new MIP based coating, for the selective sorptive extraction of the herbicide glyphosate (GLYP). Mol. imprinting of the polymer has directly been carried out employing underivatised GLYP as the template mol. Due to the poor solubility of the target compound in organic solvents, the MIP methodol. has been optimized for rebinding in aqueous media, being the synthesis and the rebinding steps carried out in water:methanol mixtures and pure aqueous media. The coating has been developed by radical polymerization initiated by UV energy, using N-allylthiourea and 2-dimethyl aminoethyl methacrylate as functional monomers and ethylene glycol dimethacrylate as the crosslinker. Mech. stability of the coating has been improved using 1,3-divinyltetramethyldisiloxane in the polymerization mixture Under the optimized conditions, the MIP has demonstrated excellent selectivity for the target compound in the presence of structural analogs, including its major metabolites. The applicability of the proposed method to real matrixes has also been assessed using river water and soil samples. Registered mean recoveries ranged from 90.6 to 97.3% and RSD values were below 5% in all cases, what confirmed the suitability of the described methodol. for the selective extraction and quantification of GLYP. In the experiment, the researchers used many compounds, for example, Diethyleneglycoldiacrylate (cas: 4074-88-8Reference of 4074-88-8).
Diethyleneglycoldiacrylate (cas: 4074-88-8) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Reference of 4074-88-8
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts