Pathway and Length Control of Supramolecular Polymers in Aqueous Media via a Hydrogen Bonding Lock.

ABSTRACT: Programming the organization of π-conjugated systems into nanostructures of defined dimensions is a requirement for the preparation of functional materials. Herein, we have achieved high-precision control over the self-assembly pathways and fiber length of an amphiphilic BODIPY dye in aqueous media by exploiting a programmable hydrogen bonding lock. The presence of a (2-hydroxyethyl)amide group in the target BODIPY enables different types of intra- vs. intermolecular hydrogen bonding, leading to a competition between kinetically controlled discoidal H-type aggregates and thermodynamically controlled 1D J-type fibers in water. The high stability of the kinetic state, which is dominated by the hydrophobic effect, is reflected in the slow transformation to the thermodynamic product (several w

SUBMITTER: Helmers I 

PROVIDER: S-EPMC7898687 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature