Nano Research

, Volume 3, Issue 1, pp 51–60

Dopant-controlled synthesis of water-soluble hexagonal NaYF4 nanorods with efficient upconversion fluorescence for multicolor bioimaging

  • Xuefeng Yu
  • Min Li
  • Mengyin Xie
  • Liangdong Chen
  • Yan Li
  • Ququan Wang
Open Access
Research Article

Abstract

A novel strategy is proposed to directly synthesize water-soluble hexagonal NaYF4 nanorods by doping rare-earth ions with large ionic radius (such as La3+, Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, and Gd3+), and the dopantcontrolled growth mechanism is studied. Based on the doping effect, we fabricated water-soluble hexagonal NaYF4:(Yb,Er)/La and NaYF4:(Yb,Er)/Ce nanorods, which exhibited much brighter upconversion fluorescence than the corresponding cubic forms. The sizes of the nanorods can be adjusted over a broad range by changing the dopant concentration and reaction time. Furthermore, we successfully demonstrated a novel depth-sensitive multicolor bioimaging for in vivo use by employing the as-synthesized NaYF4:(Yb,Er)/La nanorods as probes.

Keywords

Crystal growth hexagonal NaYF4 nanocrystals fluorescence bioimaging 

Supplementary material

12274_2010_1008_MOESM1_ESM.pdf (757 kb)
Supplementary material, approximately 757 KB.

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Copyright information

© Tsinghua University Press and Springer Berlin Heidelberg 2010

Authors and Affiliations

  • Xuefeng Yu
    • 1
  • Min Li
    • 1
  • Mengyin Xie
    • 1
  • Liangdong Chen
    • 2
  • Yan Li
    • 2
  • Ququan Wang
    • 1
  1. 1.Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of EducationWuhan UniversityWuhanChina
  2. 2.Department of OncologyZhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological BehaviorsWuhanChina

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