title: Synthesis and self-assembly of a heteroarm star amphiphile with 12 alternating arms and a well-defined core.
abstract: We report on a stepwise synthesis of a heteroarm starlike amphiphile containing 12 alternating arms (six polystyrene and six poly(acrylic acid)) connected to a hexabiphenyl aromatic core. The synthesis does not involve polymerization, and only commercially available precursors are used. Most importantly, this amphiphile undergoes self-assembly into spherical and wormlike cylindrical micelles in aqueous and methanol solutions, and forms reverse 1D micellar structures in chloroform. This remarkable morphological diversity of the reported amphiphile 1 is believed to be a direct consequence of its well-defined molecular architecture.