Application of Polyaniline Film as a Sensor for Stimulant Nerve Agents

作者：Hosseini Seyed Hossein^*; Ansari Reza; Noor Peymane

来源：Phosphorus, Sulfur, and Silicon and the Related Elements, 2013, 188(10): 1394-1401.

DOI：10.1080/10426507.2013.769981

• Polyaniline
• methyl phosphonic dichloride
• dimethyl methyl phosphonate
• sensors
• nerve agents

Methyl phosphonic dichloride (MPDC) and dimethyl methyl phosphonate (DMMP) are two important organophosphorus compounds used in the preparation of many toxic organophosphorus compounds such as nerve agents. This paper deals with the application of polyaniline coated on a glass slide surface as a sensor for the detection of some of the stimulant nerve agents such as MPDC and DMMP. The sensing behavior of polyaniline films toward MPDC and DMMP vapors via electrical conductivity changes of the polymer film using the standard four-point probe technique was investigated. The effects of the chemical concentration and the polymer thickness on the conductivity and conductivity stability of the polymer were also studied. The vapors of nerve agent stimulants affect the PANi film by the p-doping mechanism and lead to an increase in the conductivity of the polymer. The response times of the PANi film to MPDC and DMMP vapors are very fast, and the conductivity of the polymer increases with the increase in the concentration of the samples.

• 出版日期2013-10-1