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Area of Science:

  • Materials Science
  • Organic Chemistry
  • Photochemistry

Background:

  • Developing photoswitchable materials with multiple functionalities is challenging.
  • Existing systems often have single functions and are nonemissive in aggregated states, limiting applications.

Purpose of the Study:

  • To synthesize a cyanostilbene-based molecule with aggregation-induced emission (AIE).
  • To investigate its multiple, controllable photoresponsive behaviors under various conditions.

Main Methods:

  • Synthesis of a tailored cyanostilbene derivative.
  • Characterization of photoresponsive behaviors including Z/E isomerization, photocyclization, and photodimerization.
  • Experimental and theoretical analyses of photoreaction mechanisms.

Main Results:

  • The synthesized molecule exhibits efficient, multiple, and controllable photoresponsive behaviors.
  • Demonstrated reversible Z/E isomerization, UV-induced photocyclization with fluorescence enhancement, and regio-/stereoselective photodimerization.
  • Fabricated fluorescent 2D photopatterns with high signal-to-background ratio.

Conclusions:

  • The developed cyanostilbene molecule offers versatile photoresponsive properties.
  • This work provides an efficient strategy for constructing smart multiphotochromic materials.
  • Potential applications in advanced optical devices and responsive materials.