Disclosed are micro-nano materials, products obtained by covalently modifying the surfaces of micro/nano materials with hydrophilic materials, and methods for making the same. The micro/nano materials on the surfaces have carboxyl groups or/and pro-carboxyl groups. The carboxyl groups or/and pro-carboxyl groups are converted into their active esters. The products are covalently modified by forming amide bonds between the active esters on the surfaces and the modification agents; where the modification agents are hydrophilic compounds and/or hydrophilic polymers bearing primary and/or secondary aliphatic amines. The method includes: using monomers bearing carboxyl groups and/or pro-carboxyl groups to generate an adequate number of carboxyl groups and/or pro-carboxyl groups on the surface of a polymer material to be modified, then converting them into active esters; using a reasonably-sized modification agent bearing primary and/or secondary amines, zwitterions and hydrophilic linear spacer arms to form amide bonds and obtain a covalently modified surface layer; regenerating active esters on the surface of a covalently modified product, then using the amide bond formation process to create multiple layers of covalent modification. High performance coating of the surface of a micro/nano material for negligible nonspecific adsorption is achieved with reasonably-sized hydrophilic modification agents.
本发明公开了微纳米材料、通过亲
水材料共价修饰微/纳米材料表面而获得的产品以及制造方法。微米/纳米材料表面具有羧基或/和原羧基。羧基或/和原羧基被转化为其活性酯。通过在表面上的活性酯和改性剂之间形成酰胺键,对产品进行共价改性;其中改性剂为亲
水性化合物和/或亲
水性聚合物,含有
伯胺和/或仲脂族胺。该方法包括使用含有羧基和/或原羧基的单体,在待改性聚合物材料表面生成足够数量的羧基和/或原羧基,然后将其转化为活性酯;使用含有
伯胺和/或仲胺、齐聚物和亲
水线性间隔臂的合理大小的改性剂,形成酰胺键,获得共价改性表面层;在共价改性产品表面再生活性酯,然后使用酰胺键形成过程,形成多层共价改性层。通过合理大小的亲
水改性剂,可实现微/纳米材料表面的高性能涂层,从而使非特异性吸附几乎可以忽略不计。