Fabrication of Elastic Color-Changing Films-Elastomer Films Incorporating Mechanochromic Fluorenylidene-Acridane

Area of Science:

• Materials Science
• Polymer Chemistry
• Organic Electronics

Background:

• Developing advanced materials for pressure-sensitive applications is crucial.
• Incorporating functional molecules into polymer matrices presents challenges in maintaining molecular conformation and material integrity.

Purpose of the Study:

• To create a pressure-sensitive elastomer film incorporating fluorenylidene-acridane (FA) in its folded conformation.
• To investigate the film's structural integrity, durability, and responsive properties.

Main Methods:

• Swelling an elastomer network with acetone to create space for FA molecules.
• Utilizing a solvent exchange process with methanol to precipitate FA in its folded conformation within the elastomer.
• Employing confocal and scanning electron microscopy for structural analysis.
• Conducting film stretching and water resistance tests for durability assessment.

Main Results:

• Successfully incorporated FA in its folded conformation within the elastomer matrix.
• Confirmed structural integrity and durability through microscopy and physical testing.
• Demonstrated a reversible color change upon mechanical pressure, reverting to yellow with methanol treatment.

Conclusions:

• A novel method for integrating FA into elastomer films was established.
• The developed film exhibits promising properties for pressure-sensitive applications, including flexible mechanical sensors.
• The approach offers a pathway for creating advanced responsive materials.