Water-soluble building blocks for terpyridine-containing supramolecular polymers: Synthesis, complexation, and pH stability studies of poly(ethylene oxide) moieties

摘要

Poly(ethylene oxide) of various molecular weights ((M) over bar (n) = 3 000, 5 200, 10 000, 16 500 g . mol(-1)) has been modified with terpyridine end groups as building blocks for water-soluble metallo-supramolecular polymers. Metallo-supramolecular A-A homopolymers have been prepared and characterized by complexing the terpyridine units of one selected poly(ethylene oxide) ((M) over bar (n) = 3 000 g . mol(-1)) with the following transition metal ions in their 2+ oxidation states: Fe, Ru, Co, Ni, Cu, Zn, and Cd. In addition the stability of the supramolecular connection with respect to pH variations has been investigated. [References: 25]