Control of Surface Charges by Radicals as a Principle of Antistatic Polymers Protecting Electronic Circuitry
Control of Surface Charges by Radicals as a Principle of Antistatic Polymers Protecting Electronic Circuitry
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DOI：
10.1126/science.1241326
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发表时间：
2013-09-20
期刊：
影响因子：
56.9
通讯作者：
Grzybowski, Bartosz A.
中科院分区：
文献类型：
--
作者：
Baytekin, H. Tarik;Baytekin, Bilge;Grzybowski, Bartosz A.
即使是聚集在聚合物表面的极少量电荷也可能导致冲击、爆炸和数十亿美元的电子线路损失。这篇论文证明，要消除静电，根本没有必要“瞄准”电荷本身。相反，释放聚合物的方法是从其表面去除自由基。这些自由基与电荷共处并稳定；当它们被清除时，表面迅速放电。这种自由基电荷相互作用允许通过在普通聚合物中掺杂少量清除自由基的分子来控制静电，其中包括熟悉的维生素E。这种方法的有效性通过使普通聚合物降尘并将其用作防止电子电路故障的涂层来证明。
Even minute quantities of electric charge accumulating on polymer surfaces can cause shocks, explosions, and multibillion-dollar losses to electronic circuitry. This paper demonstrates that to remove static electricity, it is not at all necessary to "target" the charges themselves. Instead, the way to discharge a polymer is to remove radicals from its surface. These radicals colocalize with and stabilize the charges; when they are scavenged, the surfaces discharge rapidly. This radical-charge interplay allows for controlling static electricity by doping common polymers with small amounts of radical-scavenging molecules, including the familiar vitamin E. The effectiveness of this approach is demonstrated by rendering common polymers dust-mitigating and also by using them as coatings that prevent the failure of electronic circuitry.