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Issue 11-12, 1999
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Novel optical oxygen sensing material: platinum porphyrin–styrene–pentafluorostyrene copolymer film

Abstract

A new fluoropolymer, poly(styrene-co-pentafluorostyrene) [copoly(styrene/PFS)], is synthesized and applied to the matrix of optical oxygen sensing using phosphorescence quenching of platinum octaethylporphyrin (PtOEP) by oxygen. The phosphorescence intensity of PtOEP–poly(styrene-co-PFS) film decreased with increase of oxygen concentration. The ratio I0/I100 is used to describe the sensitivity of the sensing film, where I0 and I100 represent the detected phosphorescence intensities from a film exposed to 100% argon and 100% oxygen, respectively. The I0/I100 of PtOEP–poly(styrene-co-PFS) film is estimated to be 18.0 and a large Stern–Volmer constant is obtained compared with PtOEP–polystyrene film (I0/I100=4.5). The response times of PtOEP–poly(styrene-co-PFS) film are 5.66 s on going from argon to oxygen and 30.0 s from oxygen to argon. This result indicates that PtOEP–copoly(styrene/PFS) film is a highly sensitive device for oxygen.

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Article type: Paper
DOI: 10.1039/A907024I
Citation: Anal. Commun., 1999,36, 367-369
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    Novel optical oxygen sensing material: platinum porphyrin–styrene–pentafluorostyrene copolymer film

    Y. Amao, K. Asai, T. Miyashita and I. Okura, Anal. Commun., 1999, 36, 367
    DOI: 10.1039/A907024I

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