“…In addition to photoswitching from colored triene-2-ol to colorless cyclopentenone, a thermal reversion of the cyclized molecule back to the open-chain triene-2-ol conformation is very well-known in the solution phase. , However, similar to other photoresponsive molecules like azobenzene, spiropyrane, and diarylethene, the thermal reversion of DASA on the solid surfaces is limited due to intermolecular cohesive forces and still poses problems even today. ,− However, recent advances in the solid-state photoswitching of DASA reveal that the polymer design and molecular distribution can provide enough space for photoisomerization. Furthermore, a recent study of the Wang group revealed that the presence of an ester group influences the thermal reversion of cyclic colorless cyclopentenone to open-chain colored triene-2-ol on solid surfaces, which coincide well with the inherent ester functionality of the OrmoComp chemical system.…”