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Leveraging Multivalent Assembly towards High-Temperature Liquid-Phase Phosphorescence.

Wuzhen Luo1,2, Liming Chen3, Guangqiang Yin2

  • 1College of Chemistry, Chemical Engineering and Environment, Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, Micro-Nano Organic Optical Materials Laboratory, Minnan Normal University, Zhangzhou, 363000, P. R. China.

Angewandte Chemie (International Ed. in English)
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PubMed
Summary
This summary is machine-generated.

Researchers developed high-temperature liquid-phase phosphorescence (HTLP) materials using multivalent assembly. This strategy overcomes deactivation in polar media, enabling robust phosphorescence in extreme conditions for advanced applications.

Keywords:
anti-counterfeitingliquid phasemultivalent interactionsphosphorescencesupramolecular assembly

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Area of Science:

  • Materials Science
  • Supramolecular Chemistry

Background:

  • High-temperature phosphorescence (HTP) materials are promising but degrade in polar solvents.
  • Deactivation in polar media limits the reliability and utility of HTP materials.

Purpose of the Study:

  • To develop a strategy for achieving stable high-temperature liquid-phase phosphorescence (HTLP).
  • To enhance the photophysical properties of HTLP materials for practical applications.

Main Methods:

  • Utilized a multivalent assembly strategy involving robust hydrogen-bonding networks.
  • Incorporated multitopic phosphors to boost multivalent interactions.
  • Investigated phosphorescence in various high-temperature polar media.

Main Results:

  • Achieved visible afterglow in boiling water (5 s) and DMSO at 460 K (>2 s).
  • Demonstrated a long phosphorescence lifetime (70.3 ms) in NMP at 476 K.
  • Successfully applied HTLP materials for in-situ microcrack detection and anticounterfeiting.

Conclusions:

  • The multivalent assembly strategy effectively immobilizes phosphors and protects triplet excitons.
  • The developed HTLP materials exhibit excellent stability and enhanced photophysical properties in polar media.
  • HTLP materials offer promising solutions for high-temperature sensing and security applications.