Process for preparing magnetic nanoparticles coated with a thermo- or Ph-responsive polymer, characterized in that it comprises the radical polymerization of a monomer or co-monomers susceptible of forming a thermo-polymer or Ph-responsive copolymer in a solution including magnetic nanoparticles functionalized at their surface with a polymerization initiator of formula (I): wherein: R3 is hydrogen or hydroxyl, Hal is a halogen selected from bromine, chlorine and iodine, m is an integer from 1 to 10, preferably from 1 to 3, and R1 and R2, independently of one another, are selected from hydrogen, methyl and phenyl. The coated particles are useful, particularly as carriers of a drug in therapeutic treatments by hyperthermia and/or in situ release of the drug.
制备热响应或pH响应聚合物包覆磁性纳米颗粒的过程,其特征在于在包含经表面功能化的磁性纳米颗粒的溶液中,通过自由基聚合单体或共聚单体,制备热聚合物或pH响应共聚物。表面功能化磁性纳米颗粒的聚合
引发剂的
化学式为(I):其中:R3为氢或羟基,Hal是从
溴、
氯和
碘中选择的卤素,m为1至10的整数,优选为1至3,R1和R2独立选择自氢、甲基和苯基。包覆的颗粒特别适用于作为药物的载体,在高温治疗和/或现场释放药物的治疗中使用。