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Solid-state fluorescent photoswitches integrate aggregation-induced emission (AIE) motifs to overcome molecular packing limitations. This strategy enables efficient solid-state photoswitching for advanced applications.

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Area of Science:

  • Materials Science
  • Photochemistry
  • Supramolecular Chemistry

Background:

  • Photoswitchable molecules offer advantages like rapid response and reversibility for applications in sensing and data storage.
  • Solid-state fluorescent photoswitches provide enhanced stability and processability over solution-state counterparts.
  • Restricted molecular packing in solid-state materials often impedes photoisomerization, limiting performance.

Purpose of the Study:

  • To review recent advancements in solid-state fluorescent photoswitchable systems.
  • To highlight the strategy of integrating aggregation-induced emission (AIE) motifs with photoswitches.
  • To provide guidance for designing novel solid-state photoswitchable materials and understanding their mechanisms.

Main Methods:

  • Integration of aggregation-induced emission (AIE) luminogens (AIEgens) with photochromic units.
  • Designing molecular architectures that provide spatial freedom for photoisomerization in the solid state.
  • Summarizing and analyzing representative types of developed solid-state fluorescent photoswitchable systems.

Main Results:

  • AIEgens' twisted conformations facilitate photoisomerization in solid-state photoswitches.
  • Successful overcoming of molecular packing limitations in solid-state fluorescent photoswitching.
  • Development of high-performance solid-state photoswitchable systems with enhanced stability and processability.

Conclusions:

  • Integrating AIE motifs is a key strategy for high-performance solid-state fluorescent photoswitches.
  • These systems demonstrate significant potential for applications in anti-counterfeiting, imaging, and optical data storage.
  • Further research can deepen the understanding of stimulus-responsive mechanisms and expand application scope.