Upconversion color tuning in Ce³⁺-doped LiYF₄:Yb³⁺/Ho³⁺@LiYF₄ nanoparticles towards ratiometric fluorescence detection of chromium(III)

详细信息    查看全文

• 作者：Shijiang Liu^a ; ^b ; Yangjie Li^a ; ^b ; Cheng Zhang^a ; ^b ; Liang Yang^a ; ^c ; Tingting Zhao^a ; ^c ; Ruilong Zhang^a ; ^c ; Changlong Jiang^a ; ^b ; ^c ; ^{cljiang@iim.ac.cn}
• 关键词：Upconversion ; Color tuning ; Ratiometric fluorescence ; Cr3+ sensing
• 刊名：Journal of Colloid and Interface Science
• 出版年：2017
• 出版时间：1 May 2017
• 年：2017
• 卷：493
• 期：Complete
• 页码：10-16
• 全文大小：2189 K
• 卷排序：493

文摘

A dual-emission Ce3+-doped LiYF4:Yb3+/Ho3+@LiYF4 upconversion nanoparticles were synthesized. The output color of the nanoparticles can be precisely manipulated by modulating the doping-concentration of Ce3+ ions. Cr3+-responsive rhodamine derivative was assembled on the surface to fabricate the colorimetric probe by LRET process. A sequence of color change were obtained under 980 nm laser excitation, which could easily be visualized by the naked eye. This ratiometric probe is successfully applied to practical detection.