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Synthesis of YF3: Yb, Er upconverting nanofluorophores using chitosan and their cytotoxicity in MCF-7 cells.

Synthesis of YF3: Yb, Er upconverting nanofluorophores using chitosan and their cytotoxicity in MCF-7 cells.

International journal of biological macromolecules (2014-12-03)

Sethuraman Gayathri, Oriparambil Sivaraman Nirmal Ghosh, Annamraju Kasi Viswanath, P Sudhakara, M Jeevan Kumar Reddy, A M Shanmugharaj

RESUMEN

In this work, we described one pot hydrothermal synthesis of surface modified water soluble YF3: Yb, Er upconverting nanofluorophores (UCNFs) using natural biopolymer chitosan. The obtained nanocrystals have undergone X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), high resolution transmission electron microscopy (HRTEM) and photoluminescence (PL) studies. The nanoparticles possess uniform particle size distribution with average size about 27 nm. The cytotoxicity results revealed that the chitosan capped nanoparticles exhibit excellent biocompatibility in human breast cancer cells. In conclusion, the water soluble chitosan capped YF3: Yb, Er nanoparticles could be used as a potential candidate in bio-imaging and therapeutic applications.

MATERIALES

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Alcohol etílico puro, 200 proof, anhydrous, ≥99.5%

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Ammonium fluoride, ≥99.99% trace metals basis

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Alcohol etílico puro, 190 proof, ACS spectrophotometric grade, 95.0%

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Yttrium(III) chloride, anhydrous, powder, 99.99% trace metals basis

Sigma-Aldrich

Alcohol etílico puro, 190 proof, meets USP testing specifications

Supelco

Ethanol solution, 10 % (v/v) in H₂O, analytical standard

Sigma-Aldrich

Etanol, ≥99.5%, suitable for HPLC

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Etanol, JIS special grade, 94.8-95.8%

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Etanol, ≥99.5%

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Ytterbium, powder, ≥99.9% trace rare earth metals basis

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Yttrium(III) chloride, AnhydroBeads^™, −10 mesh, 99.99% trace metals basis

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Ethanol solution, suitable for fixing solution (blood films)

Sigma-Aldrich

Etanol, ≥99.5%, suitable for absorption spectrum analysis

Sigma-Aldrich

Etanol, JIS first grade, 94.8-95.8%

Ytterbium, lump, 25g, max. size 25mm, 99.9%

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Etanol, ≥99.5%, SAJ super special grade

Erbium, rod, 50mm, diameter 10.0mm, cast, 99%

Erbium, rod, 100mm, diameter 6.35mm, cast, 99%

Sigma-Aldrich

Etanol, ≥99.5%, suitable for fluorescence

Erbium, foil, 25x25mm, thickness 0.125mm, as rolled, 99%

Erbium, wire reel, 50mm, diameter 1.0mm, hard, 99.9%

Ytterbium, rod, 50mm, diameter 10.0mm, cast, 99%

Sigma-Aldrich

Etanol, JIS 300, ≥99.5%, for residue analysis

Sigma-Aldrich

Etanol, JIS 1000, ≥99.5%, for residue analysis

Erbium, rod, 100mm, diameter 10.0mm, cast, 99%

Ytterbium, lump, 100g, max. size 25mm, 99.9%

Ytterbium, lump, 50g, max. size 25mm, 99.9%

Ytterbium, rod, 100mm, diameter 6.35mm, cast, 99%

Erbium, foil, not light tested, 50x50mm, thickness 0.025mm, as rolled, 99%

Erbium, rod, 50mm, diameter 2.0mm, cast, 99%