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pentaerythritol
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Selective Colorimetric Detection of Pentaerythritol Tetranitrate (PETN) Using Arginine-mediated Aggregation of Gold Nanoparticles
, M.Sc. Thesis Sharif University of Technology ; Hormozinezhad, Mohammad Reza (Supervisor)
Abstract
Detection of pentaerythritol tetranitrate (PETN) as an explosive has been of great interest because of public safety and military concerns. Here, we have presented a simple, selective and sensitive colorimetric method for direct detection of PETN. The gold nanoparticles (AuNPs) were first exposed to arginine which has primary amines in its structure. Primary amines from arginine as electron donors could strongly interact with electron deficient –NO2 group of PETN. Also, hydrogen bonding could happen between the –NO2 group of PETN and –NH2 group of arginine molecules. Therefore, selective aggregation of AuNPs happened because of the donor-acceptor and hydrogen bonding interactions. Due to the...