公开(公告)号：US20120319030A1

公开(公告)日：2012-12-20

申请号：US13526750

申请日：2012-06-19

Applicant: Jin Han CHO

Inventor： Jin Han CHO

IPC: H01F1/42 ,  B05D7/00 ,  B82Y30/00

CPC classification number: B01J13/0039 ,  B01J13/22 ,  B82Y30/00 ,  B82Y40/00 ,  C01P2004/80 ,  H01F1/0054

Abstract: Disclosed is a multifunctional colloidal nanocomposite derived from nucleophilic substitution-induced layer-by-layer assembly in organic media. The multifunctional colloidal nanocomposite includes: silica colloids coated with aminopropyltrimethoxysilane; and a plurality of nanoparticle layers highly densely adsorbed onto the coated silica colloids. The multifunctional colloidal nanocomposite has a highly dense multilayer structure in which 2-bromo-2-methylpropionic acid (BMPA)-stabilized quantum dot nanoparticles and an amine-functionalized polymer are adsorbed onto silica colloids using a nucleophilic substitution reaction-based layer-by-layer assembly method. Due to this structure, the multifunctional colloidal nanocomposite can be dispersed in various organic solvents, including polar and nonpolar organic solvents. In addition, the multifunctional colloidal nanocomposite can be utilized in various applications, such as nonvolatile memory devices, magnetic cards, and optical display films due to its strong magnetic and photoluminescent properties, high crystallinity and functional stability, and good superhydrophobicity. Further disclosed a method for preparing the multifunctional colloidal nanocomposite.

Abstract translation: 公开了一种多功能胶体纳米复合材料，其衍生于有机介质中的亲核取代诱导的逐层组装。 多功能胶体纳米复合材料包括：涂有氨基丙基三甲氧基硅烷的二氧化硅胶体; 以及高度密集地吸附到涂覆的二氧化硅胶体上的多个纳米颗粒层。 多功能胶体纳米复合材料具有高密度多层结构，其中2-溴-2-甲基丙酸（BMPA）稳定的量子点纳米颗粒和胺官能化聚合物被吸附到二氧化硅胶体上，使用基于亲核取代反应的逐层 层组装方法。 由于这种结构，多功能胶体纳米复合材料可以分散在各种有机溶剂中，包括极性和非极性有机溶剂。 此外，多功能胶体纳米复合材料由于其强磁性和光致发光性，高结晶度和功能稳定性以及良好的超疏水性而可用于各种应用中，例如非挥发性存储器件，磁卡和光学显示膜。 进一步公开了一种制备多功能胶体纳米复合材料的方法。