Metallo-Polymerization/-Cyclization of a C16-Bridged Di-Terpyridine Ligand and Iron(II) Ions
-
Andres, Philip R.; Schubert, Ulrich S.
- Abstract:
- The coordinative polymerization/cyclization of a
flexible monodisperse di-terpyridine ligand with iron(II)
chloride is reported. Matrix-assisted laser desorption ionization
time-of-flight (MALDI-TOF) investigations showed the
preferred formation of a [2รพ2] macrocycle, but also larger
aggregates (cycles or linear oligomers) with up to 10 monomer
units were found. Because of its C16-spacer, the solubility
is sufficient for performing viscosity experiments
in CHCl3/MeOH solution. A viscosity titration revealed a
maximum in viscosity at the 1-to-1 ratio of iron(II) ions to
di-terpyridine-ligands, which indicates the formation of extended
oligomers, polymers, catenanes and/or cycles at that
ratio.
- Year:
- 2004
- Type of Publication:
- Article
- Journal:
- Macromolecular Rapid Communications
- Volume:
- 25
- Pages:
- 1371 - 1375