公开(公告)号：US20060088713A1

公开(公告)日：2006-04-27

申请号：US11122235

申请日：2005-05-05

申请人： Tieneke Dykstra ,  Xiao-Song Wang ,  Mayrose Salvador ,  Gregory Scholes ,  Mitchell Winnik ,  Jung Oh

发明人： Tieneke Dykstra ,  Xiao-Song Wang ,  Mayrose Salvador ,  Gregory Scholes ,  Mitchell Winnik ,  Jung Oh

IPC分类号： B32B27/14 ,  B01F3/12 ,  B32B33/00

CPC分类号： B82Y10/00 ,  B82Y30/00 ,  C01B19/007 ,  C01P2002/84 ,  C01P2002/86 ,  C01P2004/52 ,  C01P2004/64 ,  C09C1/04 ,  C09C1/10 ,  C30B7/00 ,  Y10T428/2982

摘要： The present invention provides a method of surface passivation of colloidal nanocrystalline materials using a ligand exchange process in which quantum nanoparticles of pre-selected size and shape has polymer multidentate ligands bound at the surface of the nanocrystals for stabilizing quantum size-dependent properties of nanocrystals and providing colloidal stability of the nanoparticles in solvents. The method includes preparing a colloidal dispersion of nanoparticles, preparing a suitable polymer multidentate ligand and dissolving said suitable polymer multidentate ligand in a fluid, the polymer multidentate ligand having first portions which can bind to a surface of the nanoparticles and a second portion which does not bind to the surface of the nanoparticles, and mixing the fluid containing the suitable polymer with the colloidal dispersion of nanoparticles under conditions suitable to induce binding of at least some of the first portions of the polymer multidentate ligand onto the surface of the nanoparticles, the suitable polymer multidentate ligand being selected so that the at least some of the first portions which bind to the surface to stabilize quantum size-dependent properties of the nanocrystals, and the second portion which does not bind to the surface provides colloidal stability of the nanoparticles in a desired fluid.

摘要翻译： 本发明提供一种使用配体交换过程的胶态纳米晶体材料的表面钝化方法，其中预选尺寸和形状的量子纳米颗粒具有在纳米晶体的表面处结合的聚合物多齿配体，用于稳定纳米晶体的量子尺寸依赖性质， 提供纳米颗粒在溶剂中的胶体稳定性。 该方法包括制备纳米颗粒的胶体分散体，制备合适的聚合物多齿配体并将所述合适的聚合物多齿配体溶解在流体中，所述聚合物多齿配体具有可以结合纳米颗粒表面的第一部分和不结合纳米颗粒表面的第二部分 结合到纳米颗粒的表面，并且在适于诱导聚合物多齿配体的至少一些第一部分与纳米颗粒的表面结合的条件下，将含有合适聚合物的流体与纳米颗粒的胶态分散体混合，合适的 选择聚合物多齿配体，使得结合表面的至少一些第一部分稳定纳米晶体的量子尺寸依赖性质，并且不结合表面的第二部分提供纳米颗粒的胶体稳定性 所需流体。