Electrochemiluminescence studies of the cyclometalated iridium(III) complexes with substituted 2-phenylbenzothiazole ligands

Andrzej Kapturkiewicz*, Teng-Ming Chen, Inamur R. Laskar, Jacek Nowacki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

Electrogenerated chemiluminescence (ECL) studies have been performed for the iridium(III) cyclometalated L2Ir(acac) complexes with substituted 2-phenylbenzothiazole ligand L. Electron transfer (ET) generation of the excited 3*L2Ir(acac) has been studied using a triple-potential-step technique in acetonitrile-dioxane (1:1) solutions containing 0.1 M (n-C4H9)4NPF6 as the supporting electrolyte. ET reactions between electrochemically generated L2Ir(acac)+ and A- (radical anions of aromatic nitriles) species lead to very efficient generation of ECL emission. Extremely high ECL efficiencies (up to 0.40) close to the excited 3*L2Ir(acac) luminescence yields have been found.

Original languageEnglish
Pages (from-to)827-831
Number of pages5
JournalElectrochemistry Communications
Volume6
Issue number8
DOIs
StatePublished - 1 Aug 2004

Keywords

  • Electrogenerated chemiluminescence
  • Iridium complexes
  • MLCT excited state

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