Novel optical oxygen sensing by phosphorescence quenching of palladium porphyrin self-assembled film on alumina plate

Yutaka Amao, Keisuke Asai, Ichiro Okura

Research output: Contribution to journalArticle

Abstract

An optical oxygen sensor based on the phosphorescence quenching of palladium tetrakis(4-carboxyphenyl)porphyrin (PdTCPP) self-assembled film (SAM) on alumina plate was developed. The phosphorescence intensity of PdTCPP film decreased with increasing oxygen pressure, indicating that the film can be used as an optical oxygen-sensing device based on phosphorescence quenching by oxygen. The ratio I0/I100 as a sensitivity measure of the sensing film is estimated to be 17.7, showing that the film is a highly sensitive device for oxygen pressure. The film obeyed Stern-Volmer plots with a multisite model and possessed good operational stability and a fast response. Response times are 36 s for deoxygenated to oxygenated conditions and 148 s for the reverse conditions. Copyright (C) 2000 John Wiley and Sons, Ltd.

Original languageEnglish
Pages (from-to)179-184
Number of pages6
JournalJournal of Porphyrins and Phthalocyanines
Volume4
Issue number2
DOIs
Publication statusPublished - 2000 Mar
Externally publishedYes

Keywords

  • Optical oxygen sensing
  • Palladium porphyrin
  • Phosphorescence
  • Self-assembled film

ASJC Scopus subject areas

  • Chemistry(all)

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