Hydrogen-bond acidic polymers coated SAW sensors for 2,4-dinitrotoluene detection
Hydrogen-bond acidic polymers coated SAW sensors for 2,4-dinitrotoluene detection
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用于 2,4-二硝基甲苯检测的氢键酸性聚合物涂层 SAW 传感器
DOI：
10.1039/c4ra11525b
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发表时间：
2014-11
期刊：
影响因子：
3.9
通讯作者：
Yadong Jiang
中科院分区：
文献类型：
--
作者：
Jinzhu Zhao;Huiling Tai;Xianzhong Tang;Yadong Jiang
将两种强氢键酸性(HBA)聚合物DKAP和PLF涂覆在434 MHz声表面波(SAW)器件上，用于快速检测爆炸性化合物2，4-二硝基甲苯(2，4-DNT)。研究了在200 ppb~1 ppm的浓度范围内，2，4-DNT对聚合物涂层传感器的灵敏度和选择性，以及较高浓度时的常见干扰。结果表明，当浓度为1ppm时，DKAP传感器对2，4-DNT的灵敏度是PLF的4.6倍，而对二甲基膦酸二甲酯(DMMP)的灵敏度基本相同。与PLF相比，DKAP对硝基芳香族化合物具有更好的敏感性能，这是由于芳环链段产生的偶极促进了爆炸性蒸汽与聚合物涂层之间的π-π相互作用。此外，DKAP传感器对200 ppb的2，4-DNT具有4.6 kHz的高响应，外推检测下限(LOD)为0.1 ppb，可与以前报道的最灵敏的聚合物涂层传感器相媲美。此外，DKAP传感器的吸附和回收时间都比其他相关传感器短得多。传感器对可能的常见干扰的响应比对2，4-DNT的响应低11-35倍。用原位红外光谱研究了硝基芳香化合物与化学选择性聚合物之间的氢键作用。
Two strong hydrogen-bond acidic (HBA) polymers DKAP and PLF, were coated onto 434 MHz surface acoustic wave (SAW) devices for rapid detection of an explosive compound, 2,4-dinitrotoluene (2,4-DNT). Sensitivity and selectivity of the polymer-coated sensors were studied by exposure to 2,4-DNT in the concentration range of 200 ppb to 1 ppm, as well as some common interferences at higher concentrations. The results showed that the DKAP sensor has a 4.6 times higher sensitivity to 2,4-DNT than PLF at the concentration of 1 ppm, while a further comparison indicated that their sensitivities to dimethyl methylphosphonate (DMMP) are essentially identical. The superior sensitive performance of DKAP to nitroaromatics as compared to PLF can be attributed to the dipolarity induced by the aromatic ring segments, which promotes π–π interactions between the explosive vapor and the polymer coating. In addition, the DKAP sensor exhibits a high response of 4.6 kHz to 200 ppb 2,4-DNT, with an extrapolated limit of detection (LOD) of 0.1 ppb, which is comparable to most sensitive polymer-coated sensors previously reported. Furthermore, both adsorption and recovery time of the DKAP sensor is much shorter than other related sensors. Sensor responses to possible common interferences are found to be 11–35 fold lower than to 2,4-DNT. In situ infrared spectroscopy studies were performed to demonstrate the hydrogen bonding between nitroaromatic compounds and the chemoselective polymers.
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影响因子：
2.9
作者：
Harding, G
通讯作者：
Harding, G
影响因子：
3
作者：
Claire Hartmann-Thompson;Douglas L. Keeley;B. Voit;K. Eichhorn;Y. Mikhaylova
通讯作者：
Claire Hartmann-Thompson;Douglas L. Keeley;B. Voit;K. Eichhorn;Y. Mikhaylova
DOI：
10.1109/freq.1998.717966
发表时间：
1998-05
期刊：
Proceedings of the 1998 IEEE International Frequency Control Symposium (Cat. No.98CH36165)
影响因子：
--
作者：
R. A. McGill;Todd E. Mlsna;Robert L. Mowery
通讯作者：
R. A. McGill;Todd E. Mlsna;Robert L. Mowery
影响因子：
6.1
作者：
Houser, EJ;Mlsna, TE;McGill, RA
通讯作者：
McGill, RA
影响因子：
6.1
作者：
P. Palmas;J. Klingenfus;B. Vedeau;E. Girard;Pierre Montmeat;L. Hairault;C. Pradier;C. Méthivier
通讯作者：
P. Palmas;J. Klingenfus;B. Vedeau;E. Girard;Pierre Montmeat;L. Hairault;C. Pradier;C. Méthivier