Robuta

https://pmc.ncbi.nlm.nih.gov/articles/PMC10530568/ Naphthopyran molecular switches and their emergent mechanochemical reactivity - PMC Naphthopyran molecular switches undergo a ring-opening reaction upon external stimulation to generate intensely colored merocyanine dyes. Their unique... naphthopyranmolecularswitchesemergentmechanochemical