American Society for Engineering Education Postdoctoral Fellow, Naval Research Laboratory , 4555 Overlook Avenue South West, Washington, DC 20375, United States.
ACS Appl Mater Interfaces. 2013 Oct 23;5(20):10191-200. doi: 10.1021/am402897b. Epub 2013 Oct 4.
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. 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). 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.
利用活性单重态氧（1O2），已经证明了化学战剂（CWA）模拟物的氧化作用。锌八苯氧基酞菁（ZnOPPc）络合物被证明是一种有效的光致剂，可利用 250 W 卤素灯发出的广谱光（450-800nm）将分子氧（O2）转化为 1O2。这种敏化作用可在溶液中和聚合物基质中产生 1O2。1-萘酚氧化为萘醌可用于监测在市售聚合物薄膜 Hydrothane 中 ZnOPPc 生成 1O2 的速率。通过静电纺丝，在 Hydrothane 和聚碳酸酯中形成了 ZnOPPc 的纳米纤维，并对其在聚合物表面氧化 CWA 模拟物 demeton-S 的能力进行了分析，发现它们的反应性与相应的薄膜相似。然后，使用 Hydrothane 薄膜氧化 CWA 模拟物马拉硫磷、2-氯乙基苯硫醚（CEPS）和 2-氯乙基乙硫醚（CEES）。通过这个氧化过程，CWA 模拟物被转化为毒性较低的化合物，从而仅使用空气中的 O2 和光对表面进行消毒。
