13236-02-7Relevant articles and documents
Development of photoactivable glycerol-based coatings containing quercetin for antibacterial applications
Condat, Michael,Babinot, Julien,Tomane, Somia,Malval, Jean-Pierre,Kang, Inn-Kyu,Spillebout, Faustine,Mazeran, Pierre-Emmanuel,Lalevée, Jacques,Andalloussi, Samir Abbad,Versace, Davy-Louis
, p. 18235 - 18245 (2016)
The development of new antibacterial coatings (against Escherichia coli and Staphylococcus aureus) using a natural dye, quercetin, according to a green chemistry process was investigated. Quercetin was used as both a photosensitizer and antibacterial agent. The synthesized material was developed according to a cationic photopolymerization process under light irradiation. The photosensitizing mechanism involving quercetin and an iodonium-based cationic photoinitiator was described for the first time according to steady state photolysis and fluorescence experiments. The resulting coatings showed excellent adhesion on a stainless steel plate as demonstrated by nanoindentation and scratch tests, with a high thermal stability up to 375 °C. Finally, a primary investigation was conducted to assess the antibacterial properties of the glycerol-derived coatings against Escherichia coli and Staphylococcus aureus under light illumination. Electron paramagnetic resonance spectroscopy confirmed the generation of reactive oxygen species, such as singlet oxygen, which is responsible for inhibiting bacteria proliferation.
Synthesis and characterization of novel surfactants 1,2,3-tri(2- oxypropylsulfonate-3-alkylether-propoxy) propanes
Zhou, Ming,Zhao, Jinzhou,Wang, Xu,Jing, Jiaqiang,Zhou, Lizhi
, p. 665 - 672 (2013)
A series of trimeric sulfonate surfactants 1,2,3-tri(2-oxypropylsulfonate- 3-alkylether-propoxy) propanes were prepared by the reaction of glycerin triglycidyl ether with long-chain alcohols, followed by sulfonation with 1,3-propane sultone. Glycerin triglycidyl ether was synthesized by the reaction of epichlorohydrin with glycerin. The chemical structures of the prepared compounds were confirmed by FTIR, 1H NMR and element analysis. Their solution properties were characterized by use of the method of equilibrium and dynamic surface tension, steady-state fluorescence spectroscopy of pyrene and fluorescence quenching. With the increasing length of the carbon chain, the values of their CMC initially decreased. All these trimeric sulfonate surfactants had good water solubility. These compounds were superior in surface active properties to the reference surfactant SDS. The efficiency of adsorption at the water/air interface (pC20) of these surfactants was very high. It is found that the shorter hydrocarbon chain length of the trimeric sulfonate surfactants, the faster the rate of decrease of surface tension, and the bigger the aggregation number of the trimeric sulfonate surfactants.
Polyether-polyol compound
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Page column 15-16, (2008/06/13)
A polyether-polyol compound represented by the compositional formula C3nH6n+2O2n+1, wherein n is an integer of 4 or more, wherein the polyether-polyol compound has a total number of 1,2-diol unit and 1,3-diol unit of [(n/2)+1] in a case where n is an even number of 4 or more, or a total number of 1,2-diol unit and 1,3-diol unit of [((n?1)/2)+1] and one hydroxyl group which is not involved in the units in a case where n is an odd number of 5 or more; a polyglycerol alkyl ether, a part of hydroxyl groups in a polyglycerol being substituted by an alkyl group, wherein the polyglycerol is the polyether polyol compound mentioned above; and an ester prepared by the process comprising reacting the polyether-polyol compound mentioned above or the polyglycerol alkyl ether mentioned above with a fatty acid.