Mechanically induced color change based on the chromophores of anthracene and rhodamine 6G

We report herein the mechanically induced luminescent color change of a molecule with two anthracene moieties and a rhodamine 6G unit at both sides of a branched amidoamine spacer. Different emission properties of this compound are due to the π-π overlap of anthracene moieties and the ring-opening reaction of rhodamine 6G.

The molecule with two anthracene moieties and a rhodamine 6G unit at both sides of a branched amidoamine spacer was synthesized. The luminescent properties of this molecule with the color change from blue-green to orange under mechanical stimulus were observed. Different emission properties of this compound are due to the π-π overlap of anthracene moieties and the ring-opening reaction of rhodamine 6G.