TF and glioblastoma: CDs have been exploited as biocompatible nanocarriers for brain-targeted drug delivery due to their tunable properties, photostability, small size, and facial synthesis.306 Leblanc et al. successively reported the development of two CDs-based nanocarriers to treat glioblastoma brain tumor and Alzheimer’s disease.307,308 The CDs for brain tumor treatment were conjugated with transferrin, epirubicin, temozolomide via EDC/NHS reactions with carboxylic groups on CDs surface.