Key Laboratory of Biomimetic Sensing and Advanced Robot Technology, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, China.
Analyst. 2010 Feb;135(2):368-74. doi: 10.1039/b920266h. Epub 2009 Dec 22.
Fabrication of hybridized single-walled carbon nanotube (SWNT) device based on novel sensing material N-4-Hexafluoroisopropanolphenyl-1-pyrenebutyramide (HFIPP) via facile approach has been reported for the first time. Considered that strong hydrogen-bonding can be formed between HFIPP and dimethyl methylphosphonate (DMMP) (simulant of nerve agent sarin), the HFIPP-decorated SWNT device has been employed to detect DMMP. The detection limit achieved with our sensor is as low as 50 ppb; moreover, the response and reproducibility can be presented clearly even at very low concentration of DMMP. Excellent sensitivity and selectivity of the hybridized SWNT-HFIPP device suggest that it has great potential application for detecting explosives and nerve agents. In order to investigate sensing mechanism of SWNT-HFIPP for DMMP, control electrical and fluorescent experiments have been carried out and discussed in the present paper.
首次报道了通过简便方法制备基于新型传感材料 N-4-六氟异丙醇苯基-1-芘丁酰胺（HFIPP）的杂交单壁碳纳米管（SWNT）器件。考虑到 HFIPP 与二甲亚砜（神经毒剂沙林的模拟物）之间可以形成强氢键，因此已将 HFIPP 修饰的 SWNT 器件用于检测二甲亚砜。我们的传感器的检测限低至 50 ppb；此外，即使在 DMMP 的浓度非常低的情况下，也可以清楚地呈现出响应和重现性。杂交 SWNT-HFIPP 器件的优异灵敏度和选择性表明，它在检测爆炸物和神经毒剂方面具有很大的应用潜力。为了研究 SWNT-HFIPP 对 DMMP 的传感机制，本文进行了控制电气和荧光实验，并对其进行了讨论。
