Nanocomposites containing neutral blue emitting cyclometalated iridium(III) emitters for oxygen sensing

Marta Marín-Suárez, Basile F E Curchod, Ivano Tavernelli, Ursula Rothlisberger, Rosario Scopelliti, Il Jung, Davide Di Censo, Michael Grätzel, Jorge Fernando Fernández-Sánchez*, Alberto Fernández-Gutiérrez, Md Khaja Nazeeruddin, Etienne Baranoff

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

57 Citations (Scopus)

Abstract

The behavior toward oxygen sensing of nanocomposites made of the aluminum oxide-hydroxide nanostructured solid support (AP200/19) and neutral blue emitting cyclometalated iridium(III) complexes was studied. The results are compared with the same dyes immobilized in polystyrene films. Since the photoluminescence of the complexes is totally quenched for oxygen concentrations just over 10%, these systems using the blue region of the visible spectrum are promising for oxygen detection at low concentration. In particular, dyes supported into the AP200/19 provide the best sensitivity to oxygen concentration, with the possibility to detect oxygen below 1% O 2 in gas (0.01 bar).

Original languageEnglish
Pages (from-to)2330-2338
Number of pages9
JournalChemistry of Materials
Volume24
Issue number12
DOIs
Publication statusPublished - 26 Jun 2012

Keywords

  • cyclometalated iridium(III) complexes
  • nanostructured films
  • oxygen sensing
  • phosphorescence

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