Modulation of Morphology and Luminescence Property of NaBiF4:Yb3+/Er3+ Upconversion Nanoparticles by Organic Ligands

doi:10.15541/jim20190236

Abstract

Abstract:

NaBiF₄:Yb³⁺/Er³⁺ upconversion materials modified by different organic ligands were synthesized by solvent thermal method, and then their morphology and luminescence properties were studied. The results show that the soft template and orientation of the organic ligands can tune the particle size and morphology of the UCNPs, and the defect passivation of the surface organic ligands enhances the luminescence intensity. Especially, the cetyl trimethylammonium bromide (CTAB) and the cetyl trimethylammonium chloride (CTAC) modified materials have the most significant enhancement effect (9 times). Furthermore, the effects of temperature and pH on luminescent properties of the materials were investigated. Results show that, within the range of experimental conditions, the luminescence intensity of the materials decreases with the increase of temperature from 30 to 90 ℃ and significantly reduces under strong acid and alkaline conditions, with maximum at pH 5-6.

Key words: upconversion nanoparticles, NaBiF₄:Yb³⁺/Er³⁺, organic ligand

CLC Number:

O482

SHAO Kang,WANG Tao,WEN Yingting,TENG Yuanjie,LIU Huijun,PAN Zaifa. Modulation of Morphology and Luminescence Property of NaBiF₄:Yb³⁺/Er³⁺ Upconversion Nanoparticles by Organic Ligands[J]. Journal of Inorganic Materials, 2020, 35(4): 447-453.

Figures/Tables 9

Fig. 1 IR spectra of (a) PAA-modified NaBiF4, (b) PEI-modified NaBiF4, (c) PVP-modified NaBiF4, (d) CTAB-modified NaBiF4, (e) CTAC-modified NaBiF4, and (f) CA-modified NaBiF4

Fig. 2 XRD patterns of several samples

Fig. 3 SEM images of (a) PAA-modified NaBiF4, (b) PEI-modified NaBiF4, (c) PVP-modified NaBiF4, (d) CTAB-modified NaBiF4, (e) CTAC-modified NaBiF4, and (f) CA-modified NaBi

Fig. 4 Size distributions of (a) PAA-NaBiF4, (b) PEI-NaBiF4, (c) PVP-NaBiF4, (d) CTAB-NaBiF4,(e) CTAC-NaBiF4, and (f) CA-NaBiF4

Fig. 5 Structural formulas of six organic ligands: PAA, PEI, PVP, CTAB, CTAC, and CA

Fig. 6 Emission spectra of NaBiF4 upconversion material modified by different organic ligands excited at 980 nm

Fig. 7 Emission spectra of PEI-NaBiF4 upconverting material in water and ethanol, respectively

Fig. 8 Emission spectra of (a) CTAB-NaBiF4 and (b) CTAC-NaBiF4 at different temperatures

Fig. 9 Emission spectra of (a) PAA-NaBiF4, (b) PVP-NaBiF4, (c) CTAB-NaBiF4, and (d) CTAC-NaBiF4 under different pH conditions

References 19

[1]	HUANG P, ZHENG W, ZHOU S Y , et al. Lanthanide-doped LiLuF₄ upconversion nanoprobes for the detection of disease biomarkers. Angewandte Chemie International Edition, 2014,53(5):1252-1257.
[2]	GORRIS H H, WOLFBEIS O S . Photon-upconverting nanoparticles for optical encoding and multiplexing of cells, biomolecules, and microspheres. Angewandte Chemie International Edition, 2013,52(13):3584-3600.
[3]	ZHOU J, LIU Q, FENG W , et al. Upconversion luminescent materials: advances and applications. Chemical Reviews, 2015,115(1):395-465.
[4]	IDRIS N M, GNANASAMMANDHAN M K, ZHANG J , et al. In vivo photodynamic therapy using upconversion nanoparticles as remote-controlled nanotransducers. Nature Medicine, 2012,18(10):1580-1585.
[5]	TIAN G, GU Z Z, ZHOU L J , et al. Mn²⁺ dopant-controlled synthesis of NaYF₄:Yb/Er upconversion nanoparticles for in vivo imaging and drug delivery. Advanced Materials, 2012,24(9):1226-1231.
[6]	LEI P P, LIU X L, DONG L L , et al. Lanthanide doped Bi₂O₃ upconversion luminescence nanospheres for temperature sensing and optical imaging. Dalton Trans., 2016,45(6):2686-2693.
[7]	LUO X X, CAO W H . Upconversion luminescence of holmium and ytterbium co-doped yttrium oxysulfide phosphor. Materials Letters, 2007,61(17):3696-3700.
[8]	DU Y P, ZHANG Y W, SUN L D , et al. Luminescent monodisperse nanocrystals of lanthanide oxyfluorides synthesized from trifluoroacetate precursors in high-boiling solvents. Journal of Physical Chemistry C, 2008,112(2):405-415.
[9]	BOYER J C, CUCCIA L A, CAPOBIANCO J A . Synthesis of colloidal upconverting NaYF₄:Er³⁺/Yb³⁺ and Tm³⁺/Yb³⁺ monodisperse nanocrystals. Nano Letters, 2007,7(3):847-852.
[10]	DAS EDDY A A, PRAKASH G V . Strong green upconversion emission from Er³⁺-Yb³⁺ codoped KCaBO₃ phosphor. Chemical Physics Letters, 2011,504(4/5/6):206-210.
[11]	HEER S, LEHMANN O, HAASE M , et al. Blue, green, and red upconversion emission from lanthanide-doped LuPO₄ and YbPO₄ nanocrystals in a transparent colloidal solution. Angewandte Chemie, 2003,42(27):3179-3182.
[12]	DU H Y, LAN Y J, XIA Z G ,et al. Synthesis and upconversion luminescence properties of Yb³⁺/Er³⁺ codoped BaGd₂(MoO₄)₄ powder. Materials Research Bulletin, 2009,44(8):1660-1662.
[13]	XU W, ZHAO H, LI Y X , et al. Optical temperature sensing through the upconversion luminescence from Ho³⁺/Yb³⁺ codoped CaWO₄. Sensors & Actuators B Chemical , 2013,188(11):1096-1100.
[14]	SUN Y J, LIU H J, WANG X ,et al. Optical spectroscopy and visible upconversion studies of YVO₄:Er³⁺ nanocrystals synthesized by a hydrothermal process. Chemistry of Materials, 2006,18(11):2726-2732.
[15]	CHEN G Y, OHULCHANSKYY T Y, KACHYNSKI A , et al. Intense visible and near-infrared upconversion photoluminescence in colloidal LiYF₄:Er³⁺ nanocrystals under excitation at 1490 nm. ACS Nano, 2011,5(6):4981-4986.
[16]	LEI P P, AN R, YAO S , et al. Ultrafast synthesis of novel hexagonal phase NaBiF₄ upconversion nanoparticles at room temperature. Advanced Materials, 2017,29(22):1700505.
[17]	LEI P P, AN R, ZHAI X S , et al. Benefits of surfactant effects on quantum efficiency enhancement and temperature sensing behavior of NaBiF₄ upconversion nanoparticles. Journal of Colloid and Interface Science, 2017,5(37):9659-9665.
[18]	SARKAE S, DASH A, MAHALINGAM V . Strong stokes and upconversion luminescence from ultrasmall Ln³⁺-doped BiF₃ (Ln= Eu³⁺, Yb³⁺/Er³⁺) nanoparticles confined in a polymer matrix. Chemistry-An Asian Journal, 2014,9(2):447-451.
[19]	PAN Z F, WEN Y T, WANG T , et al. One-step synthesis of hollow PEI-NaBiF₄:Yb³⁺/Er³⁺ upconversion nanoparticles for water- responsive luminescent probe. Journal of Rare Earths., DOI: 10.1016/j.jre.2019.04.022.

Modulation of Morphology and Luminescence Property of NaBiF₄:Yb³⁺/Er³⁺ Upconversion Nanoparticles by Organic Ligands

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