Self-Assembly of p-Conjugated Bis(terpyridine) Ligands with Zinc(II) Ions: New Metallosupramolecular Materials for Optoelectronic Applications

Winter, Andreas; Friebe, Christian; Chiper, Manuela; Hager, Martin D.; Schubert, Ulrich S.

Abstract:

A series of main-chain metallopolymers (P1–P10) was prepared by the self-assembly of rigid-linear p-conjugated bis(terpyridine) monomers (1–10) with ZnII ions and was fully characterized. The polymerization was additionally confirmed by UV/vis titration experiments. A strong increase in viscosities (around 1.6 times) relative to those of the monomer solutions was found. The thermal stability of P1–P10 compared with that of 1–10 was enhanced as a result of the metallopolymerization. The electro-optical properties of the materials were investigated in detail. Tuning of the electrochemical and photophysical properties was enabled; thus, bright purple to green photoluminescent (PL) emission (PL quantum yields of 0.12–0.81) for P1–P10 was observed in solution with the emission color strongly depending on the nature of the p-conjugated bis(terpyridine) system. Thin homogeneous films of P6 were prepared by solution processing, that is, spin-coating and inkjet-printing, and exhibited intense yellow PL emission in the solid state.

Year:

2009

Type of Publication:

Article

Journal:

Journal of Polymer Science: Part A: Polymer Chemistry

Volume:

47

Pages:

4083 - 4098