First graphene nanoribbon with dynamically switchable twist direction for spintronics, chemical optical sensors, adaptive designs

https://www.eurekalert.org/news-releases/1142388

"flexible, fabricated using fused 4-ring helicene units... structure's handedness amplified rather than locked... dynamically switches helical twist direction upon interaction with chiral solvents: dissolving in pine or citrus peel chiral liquid reversibly adjusts orientation toward right- or left-handed spiral depending on solvent variant, altering circularly polarized light emission direction... adaptive chemical sensors, spintronic devices, nanoscale stereochemistry/ molecular hardware"