2565-21-1Relevant academic research and scientific papers
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 (2016/03/01)
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.
Crosslinking agent (by machine translation)
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Paragraph 0089; 0091, (2018/12/12)
PROBLEM TO BE SOLVED: To provide a crosslinking agent exhibiting excellent performance as a crosslinking agent and hardly volatilizing to outside the system after compounding. SOLUTION: The crosslinking agent includes an organoboron compound having three or more partial structures (I) represented by formula (I) in the molecule. In the formula, m is 0 or 1; n is an integer of 1-3; R1and R2are each independently a hydrogen atom or an alkyl group which may be substituted; and R1and R2may be connected to each other. COPYRIGHT: (C)2012,JPO&INPIT
Glycosiderophores: Synthesis of tris-hydroxamate siderophores based on a galactose or glycero central scaffold, Fe(III) complexation studies
Neff, Christelle,Bellot, Francois,Waern, Jenny-Birgitta,Lambert, Francois,Brandel, Jeremy,Serratrice, Guy,Gaboriau, Francois,Policar, Clotilde
experimental part, p. 59 - 67 (2012/09/11)
A series of five new hexadentate tris-hydroxamate ligands based on a d-galactose or a glycerol scaffold have been synthesized. Protonation and ferric complex formation constants have been determined from solution studies by potentiometric and spectrophotometric titrations. All ligands form 1:1 Fe:L complexes. The calculated pFe values at pH 7.4 span over the range 19.2-23.0 depending on the scaffold and on the length of the spacers between hydroxamate and central scaffold and on the N-methyl substitution. This new kind of artificial siderophores based on a glycoscaffold is of interest as it opens up an easy way to modulate the pFe.
Synthesis of divalent β-(1→6)-branched (1→3)-glucohexaose and trivalent β-(1→6)-branched (1→3)-glucotriose
Wu, Zicheng,Kong, Fanzuo
, p. 2761 - 2768 (2007/10/03)
Hexaose, β-d-Glcp-(1→3)-[β-d-Glcp-(1→6)]-α-d- Glcp-(1→3)-β-d-Glcp-(1→3)-[β-d-Glcp-(1→6)] -β-d-Glcp, based dimers were synthesized by twofold glycosidation of the hexaosyl trichloroacetimidate with hexylene 1,6-diol, diethylene glycol and triethylene glycol, respectively. Meanwhile, a triose, β-1d-Glcp-(1→3) -[β-d-Glcp-(1→6)]-β-d-Glcp, based trimer was obtained by glycosidation of the triosyl trichloroacetimidate with a glycerol-derived triol scaffold.
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.
