This invention belongs to the field of biomedical materials technology, and discloses a one-step
chitosan-grafted
iohexol self-illuminating
microsphere, its preparation method, and its applications. The
microsphere uses
chitosan, a natural
biocompatible material, as the carrier framework,
iohexol as the self-illuminating functional component, and
genipin, a natural extract, as the cross-linking agent. A one-step
grafting and cross-linking curing process is used to form self-illuminating microspheres with uniform particle size and stable structure. These microspheres exhibit clear imaging under X-rays and also possess good
biocompatibility, biodegradability, and sustained-release properties, making them widely applicable in medical fields such as tumor
embolization therapy and
tissue engineering tracing, achieving integrated diagnosis and treatment. The preparation process of this invention is simplified, requiring no multi-step reactions, with mild control conditions, and is easy for industrial production, solving the problems of complex preparation, poor
biocompatibility, and imbalance between imaging and biological properties in traditional self-illuminating materials.