A flexible and superhydrophobic upconversion-luminescence membrane as an ultrasensitive fluorescence sensor for single droplet detection

Light, Science & Applications
Kui-Chao LiuBin Dong

Abstract

A Ln3+-doped (Yb3+, Tm3+ or Yb3+, Er3+ co-doped) NaYF4 nanoparticle/polystyrene hybrid fibrous membrane (HFM) was fabricated using an electrospinning technique. The HFM shows upconversion luminescence (UCL), flexibility, superhydrophobicity and processability. The UCL membrane can be used as a fluorescence sensor to detect bioinformation from a single water droplet (~10 μl). Based on the fluorescence resonance energy transfer, the detection limits of this sensor can reach 1 and 10 ppb for the biomolecule, avidin, and the dye molecule, Rhodamine B, respectively, which are superior to most of the fluorescence sensors reported in previous works. After the fluorescence detection, the target droplet was easily removed without residues on the UCL membrane surface due to its superhydrophobic property, which exhibits an excellent recyclability that cannot be achieved by traditional liquid-based detection systems.

References

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Citations

Mar 7, 2019·Nanoscale·Jan BergstrandHaichun Liu
Jun 20, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Guofeng LiuJun Lin
Jan 3, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Libo LiTianyan You
Jun 5, 2018·Chemical Communications : Chem Comm·Gang WangGaorong Han
Nov 11, 2017·Nanoscale·Yu-Qing LiuHong-Bo Sun
Jan 25, 2019·Light, Science & Applications·Xinbin ChengZhanshan Wang
Sep 16, 2020·Analytical Methods : Advancing Methods and Applications·Zhijun GuoHansong Yu
Oct 7, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Guotao XiangXiaojun Wang
May 3, 2021·Journal of Colloid and Interface Science·Minjia MengYonghai Feng
Aug 28, 2021·Micromachines·Dasheng LuPatricia Haro-González
Nov 24, 2021·Advanced Science·Tianli WuBaojun Li

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Methods Mentioned

BETA
biosensor
X-ray
scanning
transmission electron microscopy
electron diffraction
FRET

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