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Halide-containing organic persistent luminescent materials for environmental sensing applications.

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Halide-containing organic persistent luminescent (OPL) materials offer high sensitivity for environmental sensing. This review details their mechanisms, halide-enhanced properties, and applications in detecting various analytes.

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Area of Science:

  • Materials Science
  • Organic Optoelectronics
  • Environmental Sensing

Background:

  • Organic persistent luminescent (OPL) materials are gaining attention for environmental sensing due to long emission lifetimes and high sensitivity.
  • Halogen element incorporation significantly enhances OPL emission efficiency, lifetime, and color.

Purpose of the Study:

  • To review halide-containing OPL materials for environmental sensing.
  • To elucidate the relationship between molecular structure, OPL properties, and sensing capabilities.
  • To discuss challenges and future opportunities in OPL sensor development.

Main Methods:

  • Detailed exposition of photophysical processes and luminescence mechanisms in OPL materials.
  • Summarization of representative halide-containing OPL material systems (small molecules, polymers, doping systems).
  • Analysis of applications in sensing temperature, oxygen, H2O, UV light, and organic solvents.

Main Results:

  • Halide incorporation is key to efficient OPL emission with tunable properties.
  • Diverse halide-containing OPL materials exhibit promising sensing capabilities for various environmental analytes.
  • Established structure-property-application relationships guide material design.

Conclusions:

  • Halide-containing OPL materials are highly effective for environmental sensing.
  • Further research into material design and practical applications is warranted.
  • This field offers new perspectives for organic optoelectronics.