TY - JOUR
T1 - Phosphorescent oxygen sensors produced by spot-crazing of polyphenylenesulfide films
AU - Toncelli, Claudio
AU - Arzhakova, Olga V.
AU - Dolgova, Alla
AU - Volynskii, Aleksandr L.
AU - Kerry, Joseph P.
AU - Papkovsky, Dmitri B.
N1 - Publisher Copyright:
© the Partner Organisations 2014.
PY - 2014/10/14
Y1 - 2014/10/14
N2 - Phosphorescent oxygen sensors based on PtBP and PdBP dyes encapsulated in polyphenylenesulfide (PPS) films by the spot-crazing method are described. The new polymer matrix enables simple, one-step production of discrete, high-performance O2 sensors using a low toxicity solvent 2-butanone, low overall strain (8%), low amounts of solvent and precise spatial control. The resulting nano-structured sensor materials display markedly enhanced brightness, high photo-, mechanical and chemical stability. Their structural and physico-chemical properties were characterized by differential scanning calorimetry (DSC), wide-angle X-ray scattering (WAXS), optical microscopy and phosphorescence lifetime imaging microscopy (PLIM). The PPS sensors show a high degree of lateral and in-depth homogeneity on the micro- and macro-scale, as revealed by confocal microscopy, linear Stern-Volmer plots and single-exponential decays. Operating in phosphorescence lifetime mode, optimised sensors show stable O2 calibrations in the range of 0.1-100 kPa O2, low temperature dependence (linear in the range 10-50 °C), low cross-sensitivity to humidity and high reproducibility (RSD 1.5% at 21 kPa and 0.5% at zero O2). This technology facilitates the production of low-cost disposable O2 sensors and their integration in large scale industrial applications such as packaging.
AB - Phosphorescent oxygen sensors based on PtBP and PdBP dyes encapsulated in polyphenylenesulfide (PPS) films by the spot-crazing method are described. The new polymer matrix enables simple, one-step production of discrete, high-performance O2 sensors using a low toxicity solvent 2-butanone, low overall strain (8%), low amounts of solvent and precise spatial control. The resulting nano-structured sensor materials display markedly enhanced brightness, high photo-, mechanical and chemical stability. Their structural and physico-chemical properties were characterized by differential scanning calorimetry (DSC), wide-angle X-ray scattering (WAXS), optical microscopy and phosphorescence lifetime imaging microscopy (PLIM). The PPS sensors show a high degree of lateral and in-depth homogeneity on the micro- and macro-scale, as revealed by confocal microscopy, linear Stern-Volmer plots and single-exponential decays. Operating in phosphorescence lifetime mode, optimised sensors show stable O2 calibrations in the range of 0.1-100 kPa O2, low temperature dependence (linear in the range 10-50 °C), low cross-sensitivity to humidity and high reproducibility (RSD 1.5% at 21 kPa and 0.5% at zero O2). This technology facilitates the production of low-cost disposable O2 sensors and their integration in large scale industrial applications such as packaging.
UR - https://www.scopus.com/pages/publications/84922521159
U2 - 10.1039/c4tc01390e
DO - 10.1039/c4tc01390e
M3 - Article
AN - SCOPUS:84922521159
SN - 2050-7526
VL - 2
SP - 8035
EP - 8041
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
IS - 38
ER -