Provided is a hollow particle aggregate formed by aggregating a plurality of self-organizable particles, wherein a metal core is modified by a surface modifier for a metal core comprising a first segment comprising an optionally branched fluorinated alkylene glycol group, an optionally branched fluorinated alkylene group, or an optionally branched fluorinated azaalkylene group; a second segment comprising at least one hydrophilic group and bonding to one of the ends of a main chain of the first segment; and a functional group that bonds directly or indirectly to the another end of the main chain of the first segment and is able to bond to the metal core.
提供了一种通过聚集多个可自组织颗粒而形成的中空颗粒聚集体,其中
金属芯由表面改性剂对
金属芯进行改性,该表面改性剂包括第一段,该第一段包括任选支化的
氟化亚烷基
乙二醇基团、任选支化的
氟化亚烷基基团或任选支化的
氟化偶氮亚烷基基团;第二段,包括至少一个亲
水基团,并与第一段主链的一端结合;以及一个官能团,直接或间接与第一段主链的另一端结合,并能与
金属芯结合。