Ontology highlight
ABSTRACT:
SUBMITTER: Nampi PP
PROVIDER: S-EPMC7065621 | biostudies-literature | 2019 Apr
REPOSITORIES: biostudies-literature
Nampi Padmaja P PP Vakurov Alexander A Mackenzie Lewis E LE Scrutton Nigel S NS Millner Paul A PA Jose Gin G Saha Sikha S
Journal of biophotonics 20190102 4
Upconversion nanoparticles (UCNPs) with sodium yttrium fluoride, NaYF<sub>4</sub> (host lattice) doped with Yb<sup>3+</sup> (sensitizer) and Er<sup>3+</sup> (activator) were synthesized via hydrothermal route incorporating polyethyleneimine (PEI) for their long-term stability in water. The cationic PEI-modified UCNPs with diameter 20 ± 4 nm showed a zeta potential value of +36.5 mV and showed an intense, visible red luminescence and low-intensity green emission with 976 nm laser excitation. The ...[more]