A triphenylamine/bis(terpyridine)IrIII dyad for the assembly of charge-separation constructs with improved performances

Lucia Flamigni, Barbara Ventura, Etienne Baranoff, Jean Paul Collin, Jean Pierre Sauvage, Etienne Baranoff

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A new dyad DII-Ir consisting of a triphenylamine donor and a bis(terpyridine)IrIII acceptor separated by a bridge composed of two benzamide groups has been synthesized. The electrochemical and photophysical properties of the dyad have been compared to those of a corresponding dyad D-Ir characterized by a bridge connecting the donor and the acceptor consisting of a single benzamide unit. We show that, whereas the charge-separation steps are still very efficient in the long dyad (≥99%), charge recombination is slowed by a factor of three with respect to the short dyad. This encourages the use of this dyad in the assembly of a more elaborate array DII-Ir-A, expected to overcome the disappointingly low charge-separation yield of a previously studied D-Ir-A short triad.

Original languageEnglish
Pages (from-to)5189-5198
Number of pages10
JournalEuropean Journal of Inorganic Chemistry
Issue number33
DOIs
Publication statusPublished - 6 Dec 2007

Keywords

  • Charge separation
  • Electron transfer
  • Iridium
  • Photochemistry
  • Supramolecular chemistry

ASJC Scopus subject areas

  • Inorganic Chemistry

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