Work

Strain-dependent multicolor mechanochromism of 3 H -bis-naphthopyran in solid polymeric materials

Year: 2025

Type: article

Abstract: -bis-naphthopyran crosslinker were synthesized and deformed under uniaxial tension. The relative distribution of two distinctly colored merocyanine dyes is systematically biased under varying levels of applied stress and/or strain, resulting in the appearance of distinct coloration, which is characterized by pronounced changes in visible absorption spectra. This work demonstrates that judiciously designed bis-naphthopyran mechanophores can function as force sensors that visually report on the magnitude of applied force in elastomeric materials.

Source: Chemical Science

DOI: 10.1039/d5sc05757d

Authors: Skylar K. Osler, Audrey V. Conner, Molly E. McFadden, Maxwell J. Robb

Institution: California Institute of Technology

Language: English

Topic: Polymer composites and self-healing

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

Open Access status: diamond