Surface-functionalized CdSe nanorods for assembly in diblock copolymer templates
Surface-functionalized CdSe nanorods for assembly in diblock copolymer templates
复制标题
DOI：
10.1021/ja058615p
复制
发表时间：
2006-03-29
影响因子：
15
通讯作者：
Russell, TP
中科院分区：
文献类型：
--
作者：
Zhang, QL;Gupta, S;Russell, TP
通过将嵌段共聚物模板浮置在纳米棒水溶液中，制备了聚环氧乙烷覆盖的CdSe纳米棒，并将其组装在嵌段共聚物模板中。通过考虑纳米棒的表面配体覆盖来实现组装。通过最先进的技术制备的烷烃覆盖的CdSe纳米棒与这种组装过程不兼容。然而，聚（环氧乙烷）（PEO）功能化的CdSe纳米棒被成功地用于组装的纳米棒的通道和二嵌段共聚物模板的孔。其他水分散性的CdSe纳米棒，如那些覆盖有11-巯基十一烷酸（MUA），没有得到所需的组件。通过考虑PEO覆盖的CdSe纳米棒在该界面组装过程中的表面能来理解这些结果。
Poly(ethylene oxide)-covered CdSe nanorods were prepared and assembled in diblock copolymer templates by floating the block copolymer templates onto aqueous nanorod solutions. The assembly was enabled by consideration of the surface ligand coverage of the nanorods. Alkane-covered CdSe nanorods prepared by state-of-the-art techniques are not compatible with this assembly process. However, poly(ethylene oxide) (PEO)-functionalized CdSe nanorods were successfully used to assemble the nanorods into the channels and pores of diblock copolymer templates. Other water-dispersible CdSe nanorods, such as those covered with 11-mercaptoundecanoic acid (MUA), did not give the desired assemblies. These results are understood by considering the surface energies of the PEO-covered CdSe nanorods in this interfacial assembly process.