Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
J Am Chem Soc. 2012 Jul 25;134(29):12134-7. doi: 10.1021/ja303340f. Epub 2012 Jul 16.
We demonstrate the use of a catecholic anchor (Dopa) for selective modification of the inner surface of an halloysite clay nanotube. Aqueous Dopa binds to alumina at the tube lumen and does not bind the silica surface under the same conditions. Selectivity of surface modification was evidenced using X-ray photoelectron spectroscopy (XPS) and (13)C solid state NMR spectroscopy. Surface-initiated atom transfer radical polymerization (SI-ATRP) was performed through selectively adsorbed Dopa to graft a layer of polymer brush into the nanotube lumen.
我们展示了一种儿茶酚基锚（Dopa）的用途，可用于选择性修饰海泡石粘土纳米管的内表面。水相中的 Dopa 在管腔中与氧化铝结合，而在相同条件下不会与硅石表面结合。表面修饰的选择性使用 X 射线光电子能谱（XPS）和（13）C 固态 NMR 光谱进行了证明。通过选择性吸附的 Dopa 进行表面引发原子转移自由基聚合（SI-ATRP），将聚合物刷层接枝到纳米管腔中。
