申请人:International Business Machines Corporation
公开号:US10800671B2
公开(公告)日:2020-10-13
Metal ion sequestering particles were formed in a one-pot single step synthesis by azeotropically removing water while heating a reaction mixture containing a branched poly(ethylenimine), poly(acrylic acid), di-(2-picolylamine), a catalytic amount of N,N-duimethylformamide, toluene, and either glycine or a carboxy-terminated poly(N-isopropylacrylamide). No other catalyst was present. The branched and crosslinked particles formed using the poly(N-isopropylacrylamide) sequestered metal ion from water at ambient temperature and released the bound metal ion upon heating.
在加热含有支化聚(乙烯亚胺)、聚(丙烯酸)、二(2-吡啶基胺)、催化剂量的 N,N-二甲基甲酰胺、甲苯以及甘氨酸或羧基端聚(N-异丙基丙烯酰胺)的反应混合物时,通过共沸除去水,在单锅单步合成中形成了金属离子螯合微粒。没有其他催化剂。使用聚(N-异丙基丙烯酰胺)形成的支化和交联颗粒在环境温度下可从水中螯合金属离子,加热后可释放出结合的金属离子。