Chemical functionalization of cellulosic materials with diazo compounds
AssigneesCentre National de la Recherche Scientifique (CNRS), Nantes Universite
InventorsFrançois-Xavier Felpin, Guillaume Bretel, Erwan Le Grognec, Marie Denis, Samuel Calderoni
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Abstract
A method for chemically functionalizing a cellulosic material using a diazo compound, and the functionalized cellulosic materials obtained by the method. The cellulosic materials may be functionalized with a functional groups selected from hydrophobic agents, catalyzing agents, sensing agent, diagnostic agents, printing agents chelating agents, ligands, antioxidants, antimicrobial agents, or drugs. Also, the uses of functionalized cellulosic materials obtained by the method in a variety of applications.
Claims16
A method for functionalizing a cellulosic material, comprising a step of:
- contacting said cellulosic material with a diazo compound to obtain a functionalized cellulosic material,
- wherein the diazo compound is stabilized by at least one electron-withdrawing group and has general formula R′R2C═N2, wherein R1 and R2 are substituents independently selected from acyl, aldehyde, amide, ester, nitrile, nitro, sulfonyl and aryl groups, or wherein R1 is selected from acyl, aldehyde, amide, ester, nitrile, nitro, and sulfonyl groups and R2 is a hydrogen or an alkyl group, or R1 is selected from aryl groups and R2 is an alkyl group, or wherein the diazo compound has general formula:
Dependencies are inferred from the claim text.