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Researchers at Naval Research Laboratory Target Chalcogens (Decontamination of chemical-warfare agent simulants by polymer surfaces doped with the...

July 15, 2014



Researchers at Naval Research Laboratory Target Chalcogens (Decontamination of chemical-warfare agent simulants by polymer surfaces doped with the singlet oxygen generator zinc octaphenoxyphthalocyanine)

By a News Reporter-Staff News Editor at Life Science Weekly -- Fresh data on Chalcogens are presented in a new report. According to news originating from Washington, District of Columbia, by NewsRx correspondents, research stated, "Using reactive singlet oxygen (1O2), the oxidation of chemical-warfare agent (CWA) simulants has been demonstrated. The zinc octaphenoxyphthalocyanine (ZnOPPc) complex was demonstrated to be an efficient photosensitizer for converting molecular oxygen (O2) to 1O2 using broad-spectrum light (450-800 nm) from a 250 W halogen lamp."

Our news journalists obtained a quote from the research from Naval Research Laboratory, "This photosensitization produces 1O2 in solution as well as within polymer matrices. The oxidation of 1-naphthol to naphthoquinone was used to monitor the rate of 1O2 generation in the commercially available polymer film Hydrothane that incorporates ZnOPPc. Using electrospinning, nanofibers of ZnOPPc in Hydrothane and polycarbonate were formed and analyzed for their ability to oxidize demeton-S, a CWA simulant, on the surface of the polymers and were found to have similar reactivity as their corresponding films. The Hydrothane films were then used to oxidize CWA simulants malathion, 2-chloroethyl phenyl sulfide (CEPS), and 2-chloroethyl ethyl sulfide (CEES)."

According to the news editors, the research concluded: "Through this oxidation process, the CWA simulants are converted into less toxic compounds, thus decontaminating the surface using only O2 from the air and light."

For more information on this research see: Decontamination of chemical-warfare agent simulants by polymer surfaces doped with the singlet oxygen generator zinc octaphenoxyphthalocyanine. Acs Applied Materials & Interfaces, 2013;5(20):10191-200. (American Chemical Society - www.acs.org; Acs Applied Materials & Interfaces - www.pubs.acs.org/journal/aamick)

The news correspondents report that additional information may be obtained from R.T. Gephart, American Society for Engineering Education Postdoctoral Fellow, Naval Research Laboratory , 4555 Overlook Avenue South West, Washington, DC 20375, United States. Additional authors for this research include P.N. Coneski and J.H Wynne (see also Chalcogens).

Keywords for this news article include: Washington, Chalcogens, United States, Singlet Oxygen, District of Columbia, Reactive Oxygen Species, North and Central America.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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