Platinum porphyrin embedded in poly(1-trimethylsilyl-1-propyne) film as an optical sensor for trace analysis of oxygen

Y. Amao, K. Asai, I. Okura, H. Shinohara, Hiroyuki Nishide

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

A highly gas permeable polymer, poly(1-trimethylsilyl-1-propyne) (poly(TMSP)), was applied as an optical oxygen sensing matrix using luminescence quenching of platinum octaethylporphyrin (PtOEP) by oxygen. PtOEP was homogeneously embedded in poly(TMSP) to give a mechanically tough film with a thickness of 10 μm. The luminescence intensity of PtOEP embedded in the poly(TMSP) film drastically decreased with an increase in oxygen concentration. The oxygen sensitivity of the film (I0/I100) was very high and estimated to be 225. The Stern-Volmer plot for the poly(TMSP) film-embedded PtOEP was obeyed at lower oxygen concentrations between 0 and 10% and the Stern-Volmer constant is estimated to be 5.7%-1>. The limit of oxygen detection was less than 0.3%. The response times of PtOEP embedded in the poly(TMSP) film are 3.6 s on going from argon to oxygen and 73.2 s on going from oxygen to argon, respectively. These results indicate that PtOEP embedded in the poly(TMSP) film is a novel optical sensing material for trace analysis of oxygen.

Original languageEnglish
Pages (from-to)1911-1914
Number of pages4
JournalAnalyst
Volume125
Issue number11
DOIs
Publication statusPublished - 2000
Externally publishedYes

Fingerprint

Trace analysis
porphyrin
Porphyrins
Optical sensors
Platinum
platinum
Oxygen
sensor
oxygen
Argon
luminescence
argon
Luminescence
methylacetylene
analysis
Reaction Time
Limit of Detection
octaethylporphyrin
Quenching
Polymers

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Platinum porphyrin embedded in poly(1-trimethylsilyl-1-propyne) film as an optical sensor for trace analysis of oxygen. / Amao, Y.; Asai, K.; Okura, I.; Shinohara, H.; Nishide, Hiroyuki.

In: Analyst, Vol. 125, No. 11, 2000, p. 1911-1914.

Research output: Contribution to journalArticle

Amao, Y. ; Asai, K. ; Okura, I. ; Shinohara, H. ; Nishide, Hiroyuki. / Platinum porphyrin embedded in poly(1-trimethylsilyl-1-propyne) film as an optical sensor for trace analysis of oxygen. In: Analyst. 2000 ; Vol. 125, No. 11. pp. 1911-1914.
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