专利检索 ap:("THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES") AND inv:"Keir Cajal Neuman" 第 1 页

1.

发明授权
Method for functionalizing carbon nanoparticles and compositions 有权

公开(公告)号：US10995004B2

公开(公告)日：2021-05-04

申请号：US16336709

申请日：2017-09-29

申请人： THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES

发明人： Keir Cajal Neuman , Ganesh Shenoy , Chandrasekhar Mushti , Rolf E. Swenson

IPC分类号： C01B32/28 , C07C51/347 , C07C59/125 , C07C231/12 , C07C235/08 , C07C327/30 , C07D207/448 , C07D225/08 , C07D239/47 , C07D473/18 , B82Y30/00 , B82Y40/00

摘要： A method of increasing a density of carboxylic acids on a surface of a carbon nanoparticle is disclosed. The method includes contacting an oxygen-containing functional group on a surface of a carbon nanoparticle with a reducing agent to provide a hydroxyl group; reacting the hydroxyl group with a diazoacetate ester in the presence of a transition metal catalyst to provide an ester, the diazoacetate ester having the structure wherein R is a C1-8 hydrocarbyl, preferably tert-butyl, methyl, ethyl, isopropyl, allyl, benzyl, pentafluorophenyl, or N-succinimidyl; and cleaving the ester to provide a carboxylic acid group. Surface-functionalized carbon nanoparticles made by the method are also disclosed.