X-ray excited luminescence spectroscopy and imaging with NaGdF₄:Eu and Tb.

ABSTRACT: X-ray excited optical luminescence from nanophosphors can be used to selectively generate light in tissue for imaging and stimulating light-responsive materials and cells. Herein, we synthesized X-ray scintillating NaGdF₄:Eu and Tb nanophosphors via co-precipitate and hydrothermal methods, encapsulated with silica, functionalized with biotin, and characterized by X-ray excited optical luminescence spectroscopy and imaging. The nanophosphors synthesized by co-precipitate method were ∼90 and ∼106 nm in diameter, respectively, with hydrothermally synthesized particles showing the highest luminescence intensity. More importantly, we investigated the effect of thermal annealing/calcination on the X-ray excited luminescence spectra and intensity. At above 1000 °C, the luminesce

SUBMITTER: Ranasinghe M 

PROVIDER: S-EPMC9041542 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature