A charged iridophosphor for time-resolved luminescent CO2gas identification

Yun Ma, Hang Xu, Yi Zeng, Cheuk Lam Ho, Chung Hin Chui, Qiang Zhao, Wei Huang, Wai Yeung Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

38 Citations (Scopus)


A phosphorescent CO2gas probe based on an iridium(iii) complex with 2-phenylimidazo-[4,5-f][1,10]phenanthroline ligand has been developed. Its phosphorescence is quenched by the addition of CH3COO-. The quenched phosphorescence can be recovered by bubbling CO2into the detecting solution. This phosphorescent CO2probe exhibits higher photostability and reduced photobleaching than some of the reported organic fluorescent probes. A time-resolved photoluminescence experiment was performed for CO2gas detection, which could effectively remove the background fluorescence and improve the sensitivity and signal-to-noise ratio of the sensor in complicated media. This journal is
Original languageEnglish
Pages (from-to)66-72
Number of pages7
JournalJournal of Materials Chemistry C
Issue number1
Publication statusPublished - 7 Jan 2015
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry


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