Visualization of the slide-ring effect: a study on movable cross-linking points using mechanochromism

Chem Commun (Camb). 2020 Mar 21;56(23):3361-3364. doi: 10.1039/c9cc09452k. Epub 2020 Mar 9.

Abstract

To evaluate the 'slide-ring' effect in a rotaxane cross-linked network, we incorporated mechanochromophores into static and rotaxane cross-linking points and compared the mechanochromisms exhibited by the obtained polymers. This novel strategy reveals a molecular-level phenomenon with visible color changes as well as enabling quantitative electron paramagnetic resonance measurements.