Morphologically and size uniform monodisperse particles and their shape-directed self-assembly
    5.
    发明授权
    Morphologically and size uniform monodisperse particles and their shape-directed self-assembly 有权
    形态和尺寸均匀的单分散颗粒及其形状导向的自组装

    公开(公告)号:US09181477B2

    公开(公告)日:2015-11-10

    申请号:US13876266

    申请日:2011-10-03

    摘要: Monodisperse particles having: a single pure crystalline phase of a rare earth-containing lattice, a uniform three-dimensional size, and a uniform polyhedral morphology are disclosed. Due to their uniform size and shape, the monodisperse particles self assemble into superlattices. The particles may be luminescent particles such as down-converting phosphor particles and up-converting phosphors. The monodisperse particles of the invention have a rare earth-containing lattice which in one embodiment may be an yttrium-containing lattice or in another may be a lanthanide-containing lattice. The monodisperse particles may have different optical properties based on their composition, their size, and/or their morphology (or shape). Also disclosed is a combination of at least two types of monodisperse particles, where each type is a plurality of monodisperse particles having a single pure crystalline phase of a rare earth-containing lattice, a uniform three-dimensional size, and a uniform polyhedral morphology; and where the types of monodisperse particles differ from one another by composition, by size, or by morphology. In a preferred embodiment, the types of monodisperse particles have the same composition but different morphologies. Methods of making and methods of using the monodisperse particles are disclosed.

    摘要翻译: 公开了具有:含有稀土晶格的单一纯晶相,均匀的三维尺寸和均匀的多面体形态的单分散颗粒。 由于其均匀的尺寸和形状,单分散颗粒自组装成超晶格。 颗粒可以是发光颗粒,例如下转换荧光体颗粒和上转换荧光体。 本发明的单分散颗粒具有含稀土晶格,在一个实施方案中可以是含钇的晶格,或者另一个可以是含镧系元素的晶格。 基于它们的组成,它们的尺寸和/或其形态(或形状),单分散颗粒可以具有不同的光学性质。 还公开了至少两种类型的单分散颗粒的组合,其中每种类型是具有单一纯结晶相的含稀土晶格的单分散颗粒,均匀的三维尺寸和均匀的多面体形态; 并且其中单分散颗粒的类型通过组成,尺寸或形态彼此不同。 在优选的实施方案中,单分散颗粒的类型具有相同的组成但不同的形态。 公开了制备方法和使用单分散颗粒的方法。