dl-Homocysteine was firstly used as a reducing/stabilizing reagent in a facile preparation of fluorescent Au NCs for bioimaging.
Strong and site selective red-emitting photoluminescent/MRI multi-functional KLa(0.95−x)GdxF4:Eu3+ (x = 0–0.4) bio-compatible nanomaterials for targeted in-vitro liver cancer cell imaging.