Ontology highlight
ABSTRACT:
SUBMITTER: Pan Y
PROVIDER: S-EPMC7756483 | biostudies-literature | 2020 Dec
REPOSITORIES: biostudies-literature
Angewandte Chemie (International ed. in English) 20200925 49
We demonstrate an intermolecular reaction cascade to control the force which triggers crosslinking of a mechanochromic polymer of spirothiopyran (STP). Mechanochromism arises from rapid reversible force-sensitive isomerization of STP to a merocyanine, which reacts rapidly with activated C=C bonds. The concentration of such bonds, and hence the crosslinking rate, is controlled by force-dependent dissociation of a Diels-Alder adduct of anthracene and maleimide. Because the adduct requires ca. 1 nN ...[more]