Luminescence ratiometric oxygen sensor based on gadolinium labeled porphyrin and filter paper

Huimin Zhao, Lixin Zang, Lin Wang, Feng Qin, Zhiguo Zhang, Wenwu Cao

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

A fluorescence-phosphorescence ratiometric oxygen sensing system based on gadolinium labeled hematoporphyrin monomethyl ether (Gd-HMME) and filter paper was developed. A compact and simple measurement system was constructed utilizing fiber optoelectronic sensing device. Optical parameter (OP) was defined as the ratio of filter paper background fluorescence to oxygen sensitive Gd-HMME phosphorescence. We demonstrate that the OP is independent of excitation intensity in this ratiometric method. The measured results of oxygen concentration were calibrated and displayed by a Labview-based software. The fluctuation is about 0.1% for a wide range of oxygen concentration above 10% and much less than 0.1% for oxygen concentrations lower than 3%. A detection limit of 0.01% was achieved. The response time was determined to be about 4 s. These results indicate that the system we have developed can be used for oxygen detection in the whole range and is especially accurate for very low oxygen concentrations.

Original languageEnglish (US)
Pages (from-to)405-411
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume215
DOIs
StatePublished - Aug 1 2015

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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