Highly Sensitive Built-In Strain Sensors for Polymer Composites: Fluorescence Turn-On Response through Mechanochemical Activation.

Li, Zhong'an; Toivola, Ryan; Ding, Feizhi; Yang, Jeffrey; Lai, Po-Ni; Howie, Tucker; Georgeson, Gary; Jang, Sei-Hum et al. · Adv Mater · 2016

basic_science · Level V

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Abstract

A new class of rationally designed mechanophores is developed for highly sensitive built-in strain sensors in polymer composites. These mechanophores are designed to regenerate the π-conjugation pathway between the electron donor and electron acceptor by force-induced cleavage of the covalent bond to form a fluorescent dipolar dye.