title: 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.
abstract: A family of upconverting nanoparticles (UCNPs) with a tunable UV enhancement is developed via a facile approach. The design leads to a maximum 9-fold enhancement in comparison with known optimal β-phase core/shell UCNPs in water. A highly effective and rapid in situ real-time live-cell photoactivation is recorded for the first time with such nanoparticles.
authors.affiliation: Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA.
authors.forename: Jie
authors.initials: J
authors.lastname: Shen
authors.forename: Guanying
authors.initials: G
authors.lastname: Chen
authors.forename: Tymish Y
authors.initials: TY
authors.lastname: Ohulchanskyy
authors.forename: Samuel J
authors.initials: SJ
authors.lastname: Kesseli
authors.forename: Steven
authors.initials: S
authors.lastname: Buchholz
authors.forename: Zhipeng
authors.initials: Z
authors.lastname: Li
authors.forename: Paras N
authors.initials: PN
authors.lastname: Prasad
authors.forename: Gang
authors.initials: G
authors.lastname: Han
mesh_terms: D007259:Infrared Rays; D049449:Luminescence; D053758:Nanoparticles / Q000737:chemistry*; D010777:Photochemistry / Q000379:methods*; D014466:Ultraviolet Rays
keywords: UV emission; biocompatible; nanoparticles; photoactivation; upconversion