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Simultaneous Multicolor Imaging of Biological Structures with Fluorescence Photoactivation Localization Microscopy
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Multicolor hyperafterglow from isolated fluorescence chromophores.

Xiao Zhang1, Mingjian Zeng1, Yewen Zhang1

  • 1State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 210023, Nanjing, China.

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Researchers developed a new strategy for organic hyperafterglow materials, achieving high efficiency and color purity. This breakthrough enables brighter, more efficient organic optoelectronic displays and new applications.

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Area of Science:

  • Organic optoelectronics
  • Materials science
  • Photophysics

Background:

  • High-efficiency narrowband emission is crucial for organic optoelectronic displays.
  • Developing organic afterglow materials with high color purity and quantum efficiency for hyperafterglow is challenging due to structural relaxation and non-radiative decay of triplet excitons.

Purpose of the Study:

  • To demonstrate a strategy for achieving hyperafterglow emission by sensitizing and stabilizing isolated fluorescence chromophores.
  • To integrate multi-resonance fluorescence chromophores into an afterglow host within a single-component copolymer.

Main Methods:

  • Design and synthesis of a single-component copolymer integrating multi-resonance fluorescence chromophores.
  • Characterization of photoluminescent efficiencies, full-width at half-maximums (FWHMs), and emission lifetimes.
  • Fabrication of a large-area hyperafterglow display panel.

Main Results:

  • Achieved bright multicolor hyperafterglow emission.
  • Maximum photoluminescent efficiencies reached 88.9%.
  • Minimum FWHMs of 38 nm and ultralong lifetimes of 1.64 s were recorded under ambient conditions.

Conclusions:

  • The developed polymer enables efficient hyperafterglow emission with high color purity and quantum efficiency.
  • This facilely designed polymer represents a significant technological advance for organic afterglow materials.
  • The findings extend the application domain of organic afterglow materials in optoelectronics.