The design of functionalized silicone polymers for chemical sensor detection of nitroaromatic compounds
The design of functionalized silicone polymers for chemical sensor detection of nitroaromatic compounds
复制标题
DOI：
10.1109/freq.1998.717966
复制
发表时间：
1998-05
期刊：
影响因子：
--
通讯作者：
R. A. McGill;Todd E. Mlsna;Robert L. Mowery
中科院分区：
文献类型：
--
作者：
R. A. McGill;Todd E. Mlsna;Robert L. Mowery
一系列新型的化学选择性聚合物已被设计，合成，表征和评价作为传感器涂层检测多硝基芳香族化合物。这些聚合物已被评估为表面声波（SAW）器件上的薄吸附剂涂层的蒸汽吸附和选择性性能。测试的最有前途的材料包括用酸性侧基官能化的硅氧烷聚合物，所述酸性侧基在其对硝基芳族化合物的溶解性方面是互补的。最敏感的新聚合物表现出SAW传感器检测限硝基苯和2，4-二硝基甲苯在十亿分之三（ppb）和万亿分之235（ppt）分别。优化的聚合物表现出较低的水蒸气吸附，硝基苯的快速信号动力学，在4秒内达到90%的信号响应。原位红外光谱技术的研究被用来确定硝基芳香族化合物和化学选择性聚合物之间的相互作用的机制。
A series of novel chemoselective polymers have been designed, synthesized, characterized, and evaluated as sensor coatings for the detection of polynitroaromatic compounds. These polymers have been evaluated as thin sorbent coatings on surface acoustic wave (SAW) devices for their vapor sorption and selectivity properties. The most promising materials tested, include siloxane polymers functionalized with acidic pendant groups that are complimentary in their solubility properties for nitroaromatic compounds. The most sensitive of the new polymers exhibit SAW sensor detection limits for nitrobenzene and 2,4-dinitrotoluene at 3 parts per billion (ppb) and 235 parts per trillion (ppt) respectively. Optimized polymers exhibit low water vapor sorption, and rapid signal kinetics for nitrobenzene, reaching 90% of signal response in 4 seconds. Studies with an in-situ infrared spectroscopy technique are used to determine the mechanism of interaction between nitroaromatic compounds and the chemoselective polymer.