Phosphorescent oxygen sensors produced from polyolefin fibres by solvent-crazing method

SENSORS AND ACTUATORS B-CHEMICAL

卷:230

Article

Banerjee, Swagata¹  Arzhakova, Olga V.²  Dolgova, Alla A.²  Papkovsky, Dmitri B.¹ 

[1] Natl Univ Ireland Univ Coll Cork, Sch Biochem & Cell Biol, Cavanagh Pharm Bldg, Cork, Ireland

[2] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119991, Russia

关键词: Solid-state oxygen sensor;    Phosphorescence quenching;    Polyolefin fibre;    Solvent crazing;   

DOI  :  10.1016/j.snb.2016.02.062

来源: Elsevier

【 摘 要 】

Development of phosphorescent oxygen sensing materials based on commercially available semicrystalline polymer fibres (polyolefins, PP and PE) is described. The Pt-benzoporphyrin dye was incorporated into the nanoporous network of polyolefin fibres formed upon tensile drawing in the presence of physically active liquid environment via the mechanism of solvent crazing. Optimised fibre sensors showed optimal sensitivity to o(2), stable calibration in the range of 0-21 kPa O-2, reversible operation, linear temperature dependence and no significant cross-sensitivity towards humidity. The high surface area to volume ratio of the solvent-crazed polymer fibres enabled relatively bright phosphorescence intensity signals and fast response. Widefield and confocal microscopy combined with lifetime imaging were used to investigate the fine structure, dye distribution and heterogeneity of quenching by O-2 in the solvent-crazed dye-containing polymer fibres. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

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