Beyond Photochromism: Alternative Stimuli to Trigger Diarylethenes Switching

Area of Science:

• Materials Science
• Organic Chemistry
• Photochemistry

Background:

• Diarylethenes (DAEs) are P-type photochromic materials known for stability and fatigue resistance.
• They are used in molecular devices, data storage, and bioimaging.
• Stimuli beyond light, such as heat, acid, and electrochemistry, are increasingly used to control DAE isomerization.

Purpose of the Study:

• To review recent advances in DAE systems activated by non-photochemical stimuli.
• To highlight molecule design strategies and mechanisms for alternative stimulus-induced isomerization.
• To summarize applications of multi-stimuli responsive DAEs and discuss future opportunities.

Main Methods:

• Review of literature on DAEs responding to acidochromism, thermochromism, and electrochromism.
• Analysis of molecular design strategies for stimuli-responsive DAEs.
• Summary of applications and future outlook for DAEs beyond photo-switching.

Main Results:

• DAEs can be isomerized using stimuli beyond light, including heat, acid, and electrochemistry.
• Multi-stimuli responsiveness enables enhanced functionality for complex operations.
• Specific molecule designs facilitate controlled cyclization and cycloreversion under alternative stimuli.

Conclusions:

• DAEs offer multi-functional capabilities through stimuli beyond photo.
• Acidochromic, thermochromic, and electrochromic DAEs are promising for advanced applications.
• Further research into stimuli-responsive DAEs presents significant opportunities for future technologies.