Synthesis and characterization of Nd3þ: Yb3þ co-doped near infrared sensitive fluorapatite nanoparticles as a bioimaging probe

Kumar, GA and Santhosh, C (2018) Synthesis and characterization of Nd3þ: Yb3þ co-doped near infrared sensitive fluorapatite nanoparticles as a bioimaging probe. Optical Materials, 77. pp. 39-47. ISSN 0925-3467

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Abstract

Trivalent Nd and Yb co-doped rod shaped hexagonal phase fluorapatite (FAP) nanoparticles of length and width about 32 and 13 nm, respectively were prepared by hydrothermal method and investigated the ability for 980 nm emission via Nd3þ / Yb3þ energy transfer with the objective of utilizing them in biomedical imaging. Nd3þ / Yb3þ energy transfer in FAP was studied as a function of both Nd3þ and Yb3þ concentrations and found that when Yb3þ concentration was 10 mol% the FAP phase has partially turned in to YbPO4 phase. The Yb3þ emission intensity at 980 nm significantly increased up to 5 mol% Yb3þ doping and then reduced drastically for further increase in its concentration. Nd3þ /Yb3þ energy transfer rates were evaluated from the decay curves and found that a transfer rate of 71% for 2 mol% Nd3þ co-doped with 5 mol% Yb3þ. The cytocompatibility test with fibroblast like cells using MTT assay revealed that the nanoparticles are compatible with the cells.

Item Type: Article
Uncontrolled Keywords: Fluorapatite; Near infrared emission; Energy transfer; Biocompatible; Quantum yield
Subjects: Departments at MU > Atomic Molecular Physics
Depositing User: KMC Library
Date Deposited: 22 Nov 2018 09:46
Last Modified: 22 Nov 2018 09:46
URI: http://eprints.manipal.edu/id/eprint/152331

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