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。

公开(公告)号：US06881444B2

公开(公告)日：2005-04-19

申请号：US10050599

申请日：2002-01-18

Applicant: Jong-Dal Hong ,  Kook-Heon Char ,  Jin-Han Cho

Inventor： Jong-Dal Hong ,  Kook-Heon Char ,  Jin-Han Cho

IPC: B05D1/00 ,  B05D7/00 ,  H01G9/20 ,  H01L21/208 ,  B05D1/38 ,  B05D3/12

CPC classification number: B05D7/52 ,  B05D1/005 ,  H01G9/2054 ,  H01L21/02381 ,  H01L21/0242 ,  H01L21/02557 ,  H01L21/0256 ,  H01L21/02601 ,  H01L21/02628 ,  H01L21/02658 ,  Y02E10/542

Abstract: The present invention provides a process for fabricating ultrathin monolayers or ultrathin multilayer films, the process comprising the steps of: introducing positive or negative charge or a material capable of hydrogen-bonding to a substrate and placing the substrate on a spinner(pretreating step); introducing a material (A) bindable with the material deposited on the substrate, and spinning the substrate at 500 rpm to 30000 rpm for 4 to 200 seconds(first coating step); dropping washing solvent onto the substrate after completion of the first coating and spinning the substrate at 500 rpm to 30000 rpm for 4 to 200 sec to remove weakly-bound material (A) and form a thin film (A)(first washing step); introducing another material (B) bindable with the material (A) coated on the substrate and further coating it in the same condition as of the first coating(second coating step), dropping washing solvent onto the substrate after completion of the second coating and spinning the substrate at 500 rpm to 30000 rpm for 4 to 200 sec to remove the weakly-bound material (B) and form a thin film(B)(second washing step), wherein the entire above steps are more than once repeated.

Abstract translation: 本发明提供一种制造超薄单层或超薄多层膜的方法，该方法包括以下步骤：将正电荷或负电荷或能够与基底结合的材料引入并将衬底置于旋转器上（预处理步骤）; 引入与沉积在基材上的材料粘合的材料（A），并将基材以500rpm至30000rpm旋转4至200秒（第一涂布步骤）; 在第一次涂覆完成之后将洗涤溶剂滴加到基材上，并以500rpm至30000rpm旋转基材4至200秒以除去弱结合材料（A）并形成薄膜（A）（第一洗涤步骤）; 引入与涂布在基材上的材料（A）可接合的另一种材料（B），并且在与第一涂层（第二涂布步骤）相同的条件下进一步涂覆它，在第二次涂覆和纺丝完成之后将洗涤溶剂滴加到基材上 以500rpm至30000rpm的转速进行4〜200秒的除去弱结合材料（B）的基材，形成薄膜（B）（第二洗涤工序），其中上述步骤不止一次重复。