Synthesis of terpyridine ligands and their complexation with Zn 2+ and Ru2+ for optoelectronic applications

Panagiotis D. Vellis, John A. Mikroyannidis, Chih Nan Lo, Chain-Shu Hsu

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A series of soluble conjugated ligands TT, FT, PT, and NT that contained terpyridyl terminal units were synthesized by Heck coupling. These ligands absorbed at 341-434 nm and emitted blue-green light, with maximum at 440-522 nm and photolumi-nescence quantum yields of 0.15-0.71 in solution. The double-layer electroluminescent devices with the configuration of ITO/PEDOT/ligand FT, PT, or NT/Ca/Al exhibited a brightness of 43-63 cd/m2. These ligands were further reacted with zinc(II) and ruthenium(II) ions and subsequent anion exchange to afford linear and supramolecular complexes. The photophysics of these complexes were investigated. A significant redshift of the emission maximum of the Zn complexes relative to the corresponding ligands was observed. The Ru complexes were used to fabricate photovoltaic devices with the structure ITO/ PEDOT/Ru complex/P3HT:PCBM (1:1 wt/wt)/Ca/Al. The power conversion efficiency of these polymer-fullerene bulk heterojunction photovoltaic devices was up to 0.71%.

Original languageEnglish
Pages (from-to)7702-7712
Number of pages11
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Issue number23
StatePublished - 1 Dec 2008


  • Electroluminescence
  • Fluorene
  • Heck coupling
  • Light-emitting diodes
  • Metallocomplexes
  • Phenylenevinylene
  • Photophysics
  • Photovoltaic cells
  • Self-assembled reactions
  • Synthesis

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