Askes SH1, Pomp W2, Hopkins SL1, Kros A1, Wu S3, Schmidt T2, Bonnet S4.
Small. 2016 Oct;12(40):5579-5590. doi: 10.1002/smll.201601708. Epub 2016 Aug 29.Light upconversion is a very powerful tool in bioimaging as it can eliminate autofluorescence, increase imaging contrast, reduce irradiation damage, and increase excitation penetration depth in vivo. In particular, triplet-triplet annihilation upconverting (TTA-UC) nanoparticles and liposomes offer high upconversion efficiency at low excitation power. However, TTA-UC is quenched in air by oxygen, which also leads to the formation of toxic singlet oxygen. Read More