Understanding and applications of collison-induced chemistry with hyperthermal hydrogen and inert gas

这项建议旨在进一步提高我们在超热碰撞引起的新化学研究方面的科学理解和技术影响。自2004年以来，我们已经用许多例子表明，当被吸附的有机前体分子被5-10 eV的质子轰击时，通常只有它们的C-H键被裂解，因为动能转移只在H-H碰撞中有效。碳自由基的复合导致分子交联成稳定的分子网络，具有前体所需的化学功能。因此，发明了一种除氢以外几乎不需要化学试剂的“绿色”技术，以生产具有定制特性的交联分子膜，用于表面改性或膜应用。2008年，我们成功地开发了一个生产原型反应堆，表明可以产生中性超热分子氢来取代质子，用于聚合物或生物材料等电绝缘衬底的表面改性。具有理想的化学/生化性能的分子在聚合物上的大面积(300平方厘米)和高通量(曝光时间1秒)的接枝确实已经被证明。技术商业化正在进行中。

This proposal aims at further lifting the scientific understanding and technological impact of our research in novel chemistry induced by hyperthermal collision. Since 2004, we have shown with many examples that when adsorbed organic precursor molecules are bombarded by 5-10eV protons, generally only their C-H bonds are cleaved because the kinetic energy transfer is merely effective in H---H collisions. The recombination of the carbon radicals leads to cross-linking the molecules into a stable molecular network having the desirable chemical functionalities of the precursor. A "green" technology requiring little chemical reagents other than hydrogen is thus invented to produce a cross-linked molecular film with tailor-made properties for surface modification or membrane applications. In 2008, we successfully developed a production prototype reactor to show that neutral hyperthermal molecular hydrogen can be generated to replace protons, for surface modification of electrically insulating substrates such as polymers or biomaterials. Grafting molecules with desirable chemical/biochemical properties on a polymer in a large area (>300 cm2) with a high throughput (< 1 second of exposure time) has indeed been demonstrated. Technology commercialization is under way.