The present invention refers to nanoparticles having optically fluorescent activity. In more detail, the invention refers to a nanoparticle matrix comprising a co-aggregate of at least one charged polyelectrolyte and at least one oppositely charged active agent, wherein the active agent is a hydrophilic optically fluorescent agent, and the invention further refers to a nanoparticle comprising said nanoparticle matrix. Optionally, the nanoparticle is surface modified. The invention also refers to a method for preparing said nanoparticle, and to a method of surface modification. Furthermore, the invention refers to uses of said nanoparticle in vitro and in vivo, and to methods for in vitro and in vivo diagnosis.
本发明涉及具有光学荧光活性的纳米颗粒。更具体地说,本发明涉及一种纳米颗粒基质,其包括至少一种带电聚电解质和至少一种相反带电的活性剂的共聚物,其中活性剂是亲
水性光学荧光剂,本发明还涉及包括该纳米颗粒基质的纳米颗粒。可选地,纳米颗粒可以表面修饰。本发明还涉及制备该纳米颗粒的方法和表面修饰的方法。此外,本发明还涉及在体外和体内使用该纳米颗粒的用途,以及体外和体内诊断的方法。