PEG-COOH modified water soluble Upconverting Nanoparticle

PEG-COOH Upconverting Nanoparticles（UCNPS）, Excitation 980 nm,PEG-COOH modified water soluble Upconversion Nanoparticles from ruixi.The upconversion nanoparticles, which use near-infrared continuous laser as the excitation source, have deep light penetration depth, no background fluorescence interference, and almost no damage to biological tissues. Peg COOH coated up conversion nanoparticles have good stability and can be used in the study of drug loaded imaging system.