Aligned 1-D nanorods of a π-gelator exhibit molecular orientation and excitation energy transport different from entangled fiber networks

摘要: Linear π-gelators self-assemble into entangled fibers in which the molecules are arranged perpendicular to fiber long axis. However, orientation of gelator a direction parallel axes one-dimensional (1-D) structures remains challenging. Herein we demonstrate that, at air–water interface, an oligo(p-phenylenevinylene)-derived π-gelator forms aligned nanorods 340 ± 120 nm length and 34 5 width, reoriented axis rods. The change results distinct excited-state properties upon local photoexcitation, as evidenced by near-field scanning optical microscopy. A detailed understanding mechanism excitation energy migrates through these 1-D molecular assemblies might help design supramolecular with improved charge-transport properties.