Self-Assembly Behavior of Bis(Terpyridine)- and Metallobis(Terpyridine) Pluronics in Dilute Aqueos Solutions

Chiper, Manuela; Höppener, Stephanie; Schubert, Ulrich S.; Fustin, Charles-Andre; Gohy, Jean-Francois

Abstract:

Bis(terpyridine) and metallo-bis(terpyridine) Pluronics have been synthesized starting from commercially available P105 and P123 hydroxytelechelic Pluronics. The grafting of terpyridine ligands at the extremity of the Pluronic chains results in the further association of the Pluronic micelles in water. Increasing temperature decreases the solubility of the Pluronics, but also increases the solubility of the terpyridine groups. The addition of 0.5 equiv. nickel(II) ions compared to terpyridine groups induces the formation of bis(terpyridine) nickel(II) complexes and disrupts the initial hydrophobic terpyridine aggregates. In that case, formation of flower-like micelles in which the coronal chains form loops due to the terpyridine nickel(II) complexes is observed in the dilute regime.

Year:

2010

Type of Publication:

Article

Journal:

Macromolecular Chemistry and Physics

Volume:

211

Pages:

2323 - 2330