ABSTRACT

Development of Chemiresponsive Sensors for Detection of Common Homemade Explosives   [open pdf - 2MB]

"Field-structured chemiresistors (FSCRs) are polymer based sensors that exhibit a resistance change when exposed to an analyte of interest. The amount of resistance change depends on the polymer-analyte affinity. The affinity can be manipulated by modifying the polymer within the FSCRs. In this paper, we investigate the ability of chemically modified FSCRs to sense hydrogen peroxide vapor. Five chemical species were chosen based on their hydrophobicity or reactivity with hydrogen peroxide. Of the five investigated, FSCRs modified with allyl methyl sulfide exhibited a significant response to hydrogen peroxide vapor. Additionally, these same FSCRs were evaluated against a common interferrant in hydrogen peroxide detection, water vapor. For the conditions investigated, the FSCRs modified with allyl methyl sulfide were able to successfully distinguish between water vapor and hydrogen peroxide vapor. A portion of the results presented here will be submitted to the Sensors and Actuators journal."

Report Number:
SAND2012-3744
Author:
Publisher:
Date:
2012-05
Copyright:
Public Domain
Retrieved From:
Office of Scientific and Technical Information, Department of Energy: http://www.osti.gov/
Format:
pdf
Media Type:
application/pdf
URL:
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