Upconversion Luminescence of Gd2O3:Ln3+ Nanorods for White Emission and Cellular Imaging via Surface Charging and Crystallinity Control

Mingda Wu; Guijian Guan; Bingqing Yao; Choon Peng Teng; Shuhua Liu; Si Yin Tee; Boon Chong Ong; Zhili Dong; Ming Yong Han

doi:10.1021/acsanm.8b02315

Upconversion Luminescence of Gd₂O₃:Ln³⁺ Nanorods for White Emission and Cellular Imaging via Surface Charging and Crystallinity Control

Mingda Wu, Guijian Guan, Bingqing Yao, Choon Peng Teng, Shuhua Liu, Si Yin Tee, Boon Chong Ong, Zhili Dong^*, Ming Yong Han

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

In this paper, an oxide upconversion nanomaterial, Gd₂O₃:Ln³⁺, as an alternative counterpart of NaGdF₄:Ln³⁺ was developed via controlled surfactant-free synthesis, flexible lanthanide loading, compositional/size tuning, hexagonal-to-cubic lattice refinement, and positive surface charging to achieve a substantial enhancement of upconversion luminescence (∼30 times upon calcination at 1000 vs 600 °C; ∼4000 times versus its hydroxide form) due to high crystallinity and extremely low residual impurities for white emission and cellular imaging.

Original language	English
Pages (from-to)	1421-1430
Number of pages	10
Journal	ACS Applied Nano Materials
Volume	2
Issue number	3
DOIs	https://doi.org/10.1021/acsanm.8b02315
Publication status	Published - Mar 22 2019
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 American Chemical Society.

ASJC Scopus Subject Areas

General Materials Science

Keywords

cellular imaging
compositional tuning
lattice refinement
structural optimization
surface charging
upconversion luminescence
white-light emission

Access to Document

10.1021/acsanm.8b02315

Cite this

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title = "Upconversion Luminescence of Gd2O3:Ln3+ Nanorods for White Emission and Cellular Imaging via Surface Charging and Crystallinity Control",

abstract = "In this paper, an oxide upconversion nanomaterial, Gd2O3:Ln3+, as an alternative counterpart of NaGdF4:Ln3+ was developed via controlled surfactant-free synthesis, flexible lanthanide loading, compositional/size tuning, hexagonal-to-cubic lattice refinement, and positive surface charging to achieve a substantial enhancement of upconversion luminescence (∼30 times upon calcination at 1000 vs 600 °C; ∼4000 times versus its hydroxide form) due to high crystallinity and extremely low residual impurities for white emission and cellular imaging.",

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author = "Mingda Wu and Guijian Guan and Bingqing Yao and Teng, {Choon Peng} and Shuhua Liu and Tee, {Si Yin} and Ong, {Boon Chong} and Zhili Dong and Han, {Ming Yong}",

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AU - Wu, Mingda

AU - Guan, Guijian

AU - Yao, Bingqing

AU - Teng, Choon Peng

AU - Liu, Shuhua

AU - Tee, Si Yin

AU - Ong, Boon Chong

AU - Dong, Zhili

AU - Han, Ming Yong

PY - 2019/3/22

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KW - compositional tuning

KW - lattice refinement

KW - structural optimization

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