Static-Dynamic Fluorescence Patterns Based on Photodynamic Disulfide Reactions for Versatile Information Storage.

Area of Science:

• Materials Science
• Chemistry
• Optics

Background:

• Dynamic fluorescence patterns offer advanced capabilities for intelligent information storage.
• Current methods face challenges in cost, complexity, stability, and biocompatibility of functional fluorophores.

Purpose of the Study:

• To develop a facile and cost-effective approach for fabricating high-resolution, dynamic multicolor fluorescence patterns.
• To demonstrate the rewritability, stability, and information capacity of these novel fluorescence patterns.

Main Methods:

• Utilized photodynamic surface chemistry based on disulfide bonds for pattern creation.
• Employed classical fluorophores (fluorescein, rhodamine, dansyl acid) for multicolor patterns.
• Applied light for spatio-temporal control, enabling on-demand erasure and rewriting.

Main Results:

• Achieved high-resolution (≈20 µm) multicolor dynamic fluorescence patterns.
• Demonstrated dynamic rewritability and complex gray-level image generation with high information capacity.
• Exhibited excellent stability, with patterns showing minimal changes after 100 days in air and solvent environments.
• Successfully integrated static pattern creation using disulfide-ene chemistry for selective dynamicity control.

Conclusions:

• The presented facile approach enables low-cost, high-resolution, and dynamically rewritable multicolor fluorescence patterns.
• This method significantly advances information storage and protection technologies through controllable fluorescence dynamics.
• The strategy offers a versatile platform for applications requiring stable, adaptable optical information encoding.