Electrochemiluminescent functionalizable cyclometalated thiophene-based iridium(III) complexes

Marco Bandini, Michele Bianchi, Giovanni Valenti, Fabio Piccinelli, Francesco Paolucci, Magda Monari, Achille Umani-Ronchi, Massimo Marcaccio

Research output: Contribution to journalArticle

Abstract

A family of new functional bis-cyclometalated thiophene-based cationic iridium complexes have been prepared and fully characterized. The introduction of formyl groups into the thienyl-based cyclometalating ligand (thpy-CHO) allows one to perform further functionalizability and to confer to the whole species potentially interesting perspectives as functional materials. The X-ray crystal structures of three complexes, namely, [Ir(thpy)2bpy]PF6, [Ir(thpy-CHO)2bpy]PF6, and [Ir(thpy-CHO) 2phen]PF6, are reported. A rich reduction voltammetric pattern of the complexes is outlined, and the effect of the substituents on the cyclic voltammetric behavior is fully elucidated. Finally, the electrochemiluminescence spectra of all of the species have been obtained in acetonitrile by annihilation of the one-electron-oxidized and-reduced forms, showing very similar features with respect to the luminescence (as both the shape and energy of the emission bands).

Original languageEnglish
Pages (from-to)1439-1448
Number of pages10
JournalInorganic Chemistry
Volume49
Issue number4
DOIs
Publication statusPublished - Feb 15 2010

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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  • Cite this

    Bandini, M., Bianchi, M., Valenti, G., Piccinelli, F., Paolucci, F., Monari, M., Umani-Ronchi, A., & Marcaccio, M. (2010). Electrochemiluminescent functionalizable cyclometalated thiophene-based iridium(III) complexes. Inorganic Chemistry, 49(4), 1439-1448. https://doi.org/10.1021/ic901660m