title: Hierarchical helical assembly of conjugated poly(3-hexylthiophene)-block-poly(3-triethylene glycol thiophene) diblock copolymers.
abstract: We report on the solution-state assembly of all-conjugated polythiophene diblock copolymers containing nonpolar (hexyl) and polar (triethylene glycol) side chains. The polar substituents provide a large contrast in solubility, enabling formation of stably suspended crystalline fibrils even under very poor solvent conditions for the poly(3-hexylthiophene) block. For appropriate block ratios, complexation of the triethylene glycol side chains with added potassium ions drives the formation of helical nanowires that further bundle into superhelical structures.
authors.affiliation: Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA.
authors.forename: Eunji
authors.initials: E
authors.lastname: Lee
authors.forename: Brenton
authors.initials: B
authors.lastname: Hammer
authors.forename: Jung-Keun
authors.initials: JK
authors.lastname: Kim
authors.forename: Zachariah
authors.initials: Z
authors.lastname: Page
authors.forename: Todd
authors.initials: T
authors.lastname: Emrick
authors.forename: Ryan C
authors.initials: RC
authors.lastname: Hayward