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Wireless Oxygen Sensors Enabled by Fe(II)-Polymer Wrapped Carbon Nanotubes
ACS Sensors ( IF 8.2 ) Pub Date : 2017-07-12 00:00:00 , DOI: 10.1021/acssensors.7b00327
Rong Zhu 1 , Maude Desroches 1 , Bora Yoon 1 , Timothy M. Swager 1
Affiliation  

Oxygen causes food spoilage and drug degradation, which is addressed commercially by modified atmosphere packaging. We report herein a wireless oxygen sensor, O2-p-CARD, from solution processed FeII-poly(4-vinylpyridine)-single-walled carbon nanotube composites on commercial passive near-field communication tags. A large irreversible attenuation in the reflection signal of an O2-p-CARD was observed in response to oxygen at relevant concentrations, enabling non-line-of-sight monitoring of modified atmosphere packaging. These devices allow for cumulative oxygen exposure inside a package to be read with a conventional smartphone. We have demonstrated that an O2-p-CARD can detect air ingress into a nitrogen-filled vegetable package at ambient conditions. This technology provides an inexpensive, heavy-metal-free, and smartphone-readable method for in situ non-line-of-sight quality monitoring of oxygen-sensitive packaged products.

中文翻译:

Fe(II)-聚合物包裹碳纳米管实现的无线氧气传感器

氧气会导致食物变质和药物降解,这在商业上可以通过改善气氛的包装来解决。我们在这里报告了一种无线氧气传感器,O 2 - p -CARD,由溶液处理的Fe II-聚(4-乙烯基吡啶)-单壁碳纳米管复合材料在商业无源近场通信标签上制成。响应于相关浓度的氧气,观察到O 2 - p -CARD的反射信号出现了不可逆的大衰减,从而实现了对非挥发性包装物的非视线监测。这些设备允许使用传统的智能手机读取包装内的累积氧气暴露量。我们证明了O 2 - p-CARD可以在环境条件下检测空气进入充氮蔬菜包装中的情况。这项技术提供了一种廉价,无重金属且智能手机可读的方法,用于对氧气敏感的包装产品进行现场非视距质量监控。
更新日期:2017-07-12
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