Metallo-supramol. block copolymers are promising precursors for nano-materials. The polymer blocks are linked via an asym. bis-terpyridine ruthenium(II) complex. The synthetic methodol. relies on the two-step self-assembly of two different terpyridine functionalized polymers around a ruthenium ion. When an excess of Ru(III)Cl3 is added, only one ligand coordinates to the metal ion and a ruthenium(III) mono-complex is formed. The fact that this mono-complex can be isolated and characterized opens up tremendous opportunities regarding possible combinations of polymers with respect to mol. wts. and compns. The second step involves the addn. of a second terpyridine functionalized polymer of different compn. under reducing conditions. An asym. bis-terpyridine ruthenium(II) complex is formed, linking the polymers together. To expand the scope of possible block copolymer architectures and their assocd. material properties, this contribution will describe the synthesis and characterization of metallo-supramol. ABA and ABn block copolymers and the first results on the thermal, morphol. and material properties of these block copolymers
Discussion(0)
No comments yet. Be the first to comment.