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A triarylboron-based fluorescent temperature indicator: sensitive both in solid polymers and in liquid solvents.

Xuan Liu1, Shayu Li, Jiao Feng

  • 1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. gqyang@iccas.ac.cn.

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A new triarylboron compound, MPB, shows reversible thermochromic dual-fluorescence. This material can be used as a sensitive, concentration-independent temperature indicator in polymers.

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Area of Science:

  • Materials Science
  • Organic Chemistry
  • Photophysics

Background:

  • Thermochromic materials change color with temperature.
  • Dual-fluorescence offers unique optical properties.
  • Developing sensitive temperature sensors is crucial for various applications.

Purpose of the Study:

  • To design and synthesize a novel triarylboron compound.
  • To investigate its thermochromic and dual-fluorescence properties.
  • To evaluate its potential as a self-reference temperature indicator.

Main Methods:

  • Chemical synthesis of the triarylboron compound (MPB).
  • Characterization of photophysical properties (fluorescence, thermochromism).
  • Incorporation into solid-state polymer matrices and liquid solvents.

Main Results:

  • MPB was successfully synthesized.
  • The compound exhibited reversible thermochromic dual-fluorescence.
  • The fluorescent polymer showed high sensitivity as a temperature indicator.
  • The sensing performance was independent of MPB concentration.

Conclusions:

  • A novel triarylboron compound with reversible thermochromic dual-fluorescence was developed.
  • The material demonstrates potential as a highly sensitive, concentration-independent solid-state temperature sensor.