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The PtIV complex cis,cis,trans-[Pt(NH3)2(Cl)2(O2CCH2CH2CO2H)2] is photoactivated by near infrared light (980 nm) using NaYF4:Yb3+/Tm3+@NaYF4 core–shell upconversion nanoparticles. Coupling of this cisplatin precursor with the biocompatible PEGylated phospholipid DSPE-PEG(2000)-NH2 affords a valuable approach to decorate the surface of the nanoparticles, providing novel photoactivatable nanomaterials capable of releasing PtII species upon NIR light excitation.

Graphical abstract: Near infrared activation of an anticancer PtIV complex by Tm-doped upconversion nanoparticles

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