A new optochemical chlorine gas sensor based on the application of amphiphilic co-networks as matrices

A new optochemical chlorine gas sensor based on the application of amphiphilic co-networks as matrices
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一种基于两亲共网络作为基质的新型光化学氯气传感器

DOI:
10.1016/j.snb.2010.07.028
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发表时间:
2011
影响因子:
8.4
通讯作者:
Heinze
Heinze
中科院分区:
化学1区
文献类型:
--
作者:
Meskath;Heinze

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描述了一种用于氯气检测的传感器,该传感器由两亲性聚合物共网络与固定化氧化指示剂o-甲苯胺组成。将提供描述气敏特性和长期稳定性的数据。本研究的重点是APCN薄膜作为指标固定的矩阵。制备了聚(2-羟乙基丙烯酸酯)- 1 -聚二甲基硅氧烷phea - 1 - pdms薄膜作为邻甲苯胺的固定基质。我们提出了一种简单,不昂贵,但高灵敏度的氯气检测光学传感器。薄膜反应具有可重复性和不可逆性。用我们的动力学光学方法实现了快速的响应时间。氯的测定是在邻甲苯胺作为显色剂氧化成可在650nm处监测的有色产物的基础上进行的。结果显示,对浓度低至0.01ppm的氯气有快速反应。
A sensor for chlorine gas detection, consisting of an amphiphilic polymer co-network with an immobilised oxidation indicator, o-tolidine, is described. Data describing gas sensing properties and long-term stability will be presented. This study focuses on APCN thin films as a matrix for indicator immobilisation. Thin films of poly(2-hydroxyethyl acrylate)-l-polydimethylsiloxane PHEA-l-PDMS were prepared as immobilisation matrices for o-tolidine. We present a simple, non-expensive, but highly sensitive optical sensor for chlorine gas detection. The thin film response is reproducible and irreversible. With our kinetic-optical method rapid response times were achieved. The determination of chlorine is performed on the basis of the oxidation of o-tolidine as the chromogenic reagent to a coloured product which can be monitored at 650nm. The results reveal a fast response to chlorine gas down to concentrations of 0.01ppm.
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