Design and synthesis of mechanochromic poly(ether-ester-urethane) elastomer with high toughness and resilience mediated by crystalline domains

Poly(ether-ester-urethane) elastomers with spiropyran were designed and synthesized to perform mechanochromic behavior. Poly(ether-ester) precursor with crystalline PBT domains and PTMG soft segments endows it with high toughness and resilience.