Phosphorescent oxygen sensors produced by spot-crazing of polyphenylenesulfide films

2014 ◽  
Vol 2 (38) ◽  
pp. 8035-8041 ◽  
Author(s):  
Claudio Toncelli ◽  
Olga V. Arzhakova ◽  
Alla Dolgova ◽  
Aleksandr L. Volynskii ◽  
Joseph P. Kerry ◽  
...  
Keyword(s):  
Oxygen Sensors ◽  
Polyphenylene Sulphide ◽  
Solvent Crazing

Phosphorescent oxygen sensors produced by localised solvent-crazing of polyphenylene sulphide films are described.

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

2016 ◽  
Vol 230 ◽  
pp. 434-441 ◽  
Author(s):  
Swagata Banerjee ◽  
Olga V. Arzhakova ◽  
Alla A. Dolgova ◽  
Dmitri B. Papkovsky
Keyword(s):  
Oxygen Sensors ◽  
Solvent Crazing

scholarly journals Stability and Safety Assessment of Phosphorescent Oxygen Sensors for Use in Food Packaging Applications

Chemosensors ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 38 ◽  
Author(s):  
Caroline Kelly ◽  
Malco Cruz-Romero ◽  
Joseph Kerry ◽  
Dmitri Papkovsky
Keyword(s):  
Safety Assessment ◽  
Food Packaging ◽  
Oxygen Sensors ◽  
Modified Atmosphere ◽  
Atmospheric Conditions ◽  
Phosphorescence Lifetime ◽  
Optical Signals ◽  
Polypropylene Fabric ◽  
Polyphenylene Sulphide ◽  
Fabric Materials

Five types of new solid-state oxygen sensors, four based on microporous polypropylene fabric materials and one on polyphenylene sulphide films impregnated with phosphorescent platinum(II)-benzoporphyrin dye, were tested for their stability and safety in food packaging applications. All these sensors exhibit useful optical signals (phosphorescence lifetime readout) and working characteristics and are simpler and cheaper to produce and integrate into standard packaging materials than existing commercial sensors. When exposed to a panel of standard food simulants and upon direct contact with raw beef and chicken meat and cheddar cheese samples packaged under modified atmosphere, the sensors based on ungrafted polypropylene fabric, impregnated with PtBP dye by the swelling method, outperformed the other sensors. The sensors are also stable upon storage under normal atmospheric conditions for at least 12 months, without any significant changes in calibration.

scholarly journals The impact of particulate electron paramagnetic resonance oxygen sensors on fluorodeoxyglucose imaging characteristics detected via positron emission tomography

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Philip E. Schaner ◽  
Ly-Binh-An Tran ◽  
Bassem I. Zaki ◽  
Harold M. Swartz ◽  
Eugene Demidenko ◽  
...  
Keyword(s):  
Fdg Pet ◽  
Oxygen Sensor ◽  
Oxygen Sensors ◽  
Paramagnetic Resonance ◽  
Imaging Characteristics ◽  
Positron Emission ◽  
Pet Ct ◽  
Fdg Pet Ct ◽  
The Impact ◽  
Electron Paramagnetic

AbstractDuring a first-in-humans clinical trial investigating electron paramagnetic resonance tumor oximetry, a patient injected with the particulate oxygen sensor Printex ink was found to have unexpected fluorodeoxyglucose (FDG) uptake in a dermal nodule via positron emission tomography (PET). This nodule co-localized with the Printex ink injection; biopsy of the area, due to concern for malignancy, revealed findings consistent with ink and an associated inflammatory reaction. Investigations were subsequently performed to assess the impact of oxygen sensors on FDG-PET/CT imaging. A retrospective analysis of three clinical tumor oximetry trials involving two oxygen sensors (charcoal particulates and LiNc-BuO microcrystals) in 22 patients was performed to evaluate FDG imaging characteristics. The impact of clinically used oxygen sensors (carbon black, charcoal particulates, LiNc-BuO microcrystals) on FDG-PET/CT imaging after implantation in rat muscle (n = 12) was investigated. The retrospective review revealed no other patients with FDG avidity associated with particulate sensors. The preclinical investigation found no injected oxygen sensor whose mean standard uptake values differed significantly from sham injections. The risk of a false-positive FDG-PET/CT scan due to oxygen sensors appears low. However, in the right clinical context the potential exists that an associated inflammatory reaction may confound interpretation.

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