Upconversion: Tunable Near Infrared to Ultraviolet Upconversion Luminescence Enhancement in (α-NaYF4 :Yb,Tm)/CaF2 Core/Shell Nanoparticles for In situ Real-time Recorded Biocompatible Photoactivation (Small 19/2013).

TitleUpconversion: Tunable Near Infrared to Ultraviolet Upconversion Luminescence Enhancement in (α-NaYF4 :Yb,Tm)/CaF2 Core/Shell Nanoparticles for In situ Real-time Recorded Biocompatible Photoactivation (Small 19/2013).
Publication TypeJournal Article
Year of Publication2013
AuthorsShen J, Chen G, Ohulchanskyy TY, Kesseli SJ, Buchholz S, Li Z, Prasad PN, Han G
JournalSmall (Weinheim an der Bergstrasse, Germany)
Volume9
Issue19
Pagination3212
Date Published2013 Oct 11
Abstract

Upconversion nanoparticles (UCNPs) can convert tissue-penetrable nearinfrared light into UV emission, making them promising as transducers for photoactivation in biology. However, the choice of the UV emitting UCNPs is limited and their NIR-to-UV efficiency is low. G. Han and co-workers have addressed this issue by developing a family of CaF2 -coated UCNPs with tunable UV enhancement. As reported on page 3213, such design outperforms known optimal UCNPs and in situ realtime live-cell photoactivation is recorded for the first time with such nanoparticles. This result is a potential game changer in photoactivation in living systems and a new tool for other biophotonic applications.

DOI10.1002/ece3.685
Alternate JournalSmall