Construction of a targeted photodynamic nanotheranostic agent using upconversion nanoparticles coated with an ultrathin silica layer

Chem Commun (Camb). 2018 Sep 25;54(75):10618-10621. doi: 10.1039/c8cc05121f. Epub 2018 Sep 4.

Abstract

Two-activator codoped UCNPs served as energy donors and photosensitizers entrapped in an ultrathin silica layer served as energy acceptors to establish LRET-based photodynamic therapy with the advantages of shortened donor-to-acceptor distance and enhanced LRET efficiency. The exterior PEG-FA ligand further enhanced the biocompatibility and targetability to cancer cells and the tumor section.