New fluoropolymers, poly(isobutylmethacrylate-co-trifluoroethylmethacrylate) (poly-IBM-co-TFEM) and poly(styrene-co-trifluoroethylmethacrylate) (poly-styrene-co-TFEM) are synthesized and applied to the matrix of optical oxygen pressure sensing based on phosphorescence quenching of platinum porphyrin, platinum octaethylporphyrin (PtOEP), by oxygen. The I0/I100, as a 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, of PtOEP-poly-IBM film and polystyrene film, as the reference, are estimated to be 69.0 and 4.5, respectively. However, the I0/I100 of poly-IBM-co-TFEM film and poly-styrene-co-TFEM film are estimated to be 288 and 296, respectively, and large Stern-Volmer constants are obtained. This result indicates that PtOEP-fluoropolymer films are highly sensitive devices for oxygen. For PtOEP-poly-IBM-co-TFEM film, response times are 6.0 sec for deoxygenated to oxygenated conditions and 35.1 sec for reverse conditions. For PtOEP-poly-styrene-co-TFEM film, however, response times are 4.4 sec for deoxygenated to oxygenated conditions and 30.2 sec for reverse conditions. The rapid response for switching between oxygenated and deoxygenated condition is accomplished using PtOEP-fluoropolymer film.
|Number of pages||5|
|Journal||Polymers for Advanced Technologies|
|Publication status||Published - 2000 Aug 1|
ASJC Scopus subject areas
- Polymers and Plastics