Fluorescent bilayer nanocoils assembled from an asymmetric perylene diimide molecule with ultrasensitivity for amine vapors.

Highly fluorescent bilayer nanocoils assembled from an asymmetric perylene diimide molecule exhibit unprecedented sensitivity to trace amines, that is, three orders of magnitude greater than our previously reported solid nanofibers. The coiled nanostructure design for new sensing materials offers a novel option for optimizing the sensitivities of fluorescence sensors based on organic nanomaterials.