Structures and properties of block copolymers in solution depend on th
e total block length, the block length ratio, the block sequence and t
he solvent quality. The supramolecular structures formed by core/shell
or flower-like micelles in the concentrated solution region are exami
ned by dynamic light scattering to ascertain some of the conditions wh
ich can enhance the formation of open associated structures using a tr
iblock copolymer in a selective solvent for the middle block.