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Related Concept Videos

Photoluminescence: Applications01:14

Photoluminescence: Applications

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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
405

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Related Experiment Video

Updated: Jul 8, 2025

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
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Constructing Lanthanide-Organic Complexes for X-ray Scintillation and Imaging.

Huangjie Lu1, Miaomiao Xu2, Jingqi Ma1

  • 1Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 2019 Jia Luo Road, Shanghai, 201800, P. R. China.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|December 16, 2023
PubMed
Summary

Lanthanide-based hybrids show promise for X-ray detection and imaging. Tb-bppCOO-2 exhibits superior X-ray sensitivity and stability, enabling high-resolution flexible scintillator films for advanced imaging applications.

Keywords:
LanthanideOrganic-inorganic hybridRadiation detectionScintillationX-ray imaging

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Area of Science:

  • Materials Science
  • Luminescence
  • Radiation Detection

Background:

  • Lanthanide complexes are known for photoluminescence, but their use in ionizing radiation detection is less explored.
  • Organic-inorganic hybrids offer tunable properties for advanced applications.

Purpose of the Study:

  • To investigate the photo- and radio-induced luminescence of novel lanthanide-organic-inorganic hybrids.
  • To evaluate their potential as X-ray scintillators and imaging platforms.
  • To develop a flexible scintillator film for high-resolution X-ray imaging.

Main Methods:

  • Synthesis of six new lanthanide-bearing organic-inorganic hybrid materials using lanthanide cations and 2,6-di(1H-pyrazol-1-yl)isonicotinate (bppCOO-) ligands.
  • Characterization of photo- and X-ray-excited luminescence (XEL) properties.
  • Correlation of XEL intensity with X-ray dose rates.
  • Evaluation of X-ray sensing efficacy and detection limits.
  • Fabrication of a flexible scintillator film using Tb-bppCOO-2 embedded in polydimethylsiloxane (PDMS).

Main Results:

  • Six new hybrid materials with three distinct structures were synthesized.
  • Eu-bppCOO-1 and Tb-bppCOO-2 demonstrated sharp XEL with linear correlation to X-ray dose rates over a wide dynamic range (0.007-4.55 mGy s⁻¹).
  • Tb-bppCOO-2 showed a lower X-ray detection limit (4.06 μGy s⁻¹) compared to Eu-bppCOO-1 (14.55 μGy s⁻¹).
  • A flexible scintillator film using Tb-bppCOO-2 achieved high-resolution X-ray imaging with a spatial resolution of approximately 7 lp mm⁻¹.
  • The Tb-bppCOO-2 material exhibited excellent radiation stability.

Conclusions:

  • Lanthanide-organic-inorganic hybrids are effective platforms for X-ray scintillation and imaging.
  • Tb-bppCOO-2 is a highly sensitive and stable material for X-ray detection.
  • The developed flexible scintillator film holds significant potential for advanced, high-resolution X-ray imaging applications.