Method for forming mesoporous silica nanoparticles, mesoporous silica nanopartices, and applications thereof
    1.
    发明申请
    Method for forming mesoporous silica nanoparticles, mesoporous silica nanopartices, and applications thereof 有权
    形成介孔二氧化硅纳米粒子,介孔二氧化硅纳米颗粒的方法及其应用

    公开(公告)号:US20090311332A1

    公开(公告)日:2009-12-17

    申请号:US12382041

    申请日:2009-03-06

    IPC分类号: A61K9/14 A61K31/704 A61P35/00

    摘要: A method for synthesizing a mesoporous silica nanoparticle, a mesoporous silica nanoparticle, and applications thereof are provided. The method includes fractionating a mesoporous silica nanoparticle suspension to produce size-fractionated mesoporous silica nanoparticle. The method further includes etching the size-fractionated mesoporous silica nanoparticle to produce synthesized mesoporous silica nanoparticle having a hollow, porous morphology configured to receive one of a therapeutic agent and an imaging material. The etching includes differential etching of silica from areas of low polymeric density within the mesoporous silica nanoparticle and re-depositing of the silica in areas of higher polymeric density existing near the surface of the mesoporous silica nanoparticle. A target material is loaded into the synthesized mesoporous silica nanoparticle and a controlled released of the target material is provided by decreasing the physiological pH of the surface of the mesoporous silica nanoparticle.

    摘要翻译: 提供了介孔二氧化硅纳米粒子,介孔二氧化硅纳米粒子的合成方法及其应用。 该方法包括分级介孔二氧化硅纳米颗粒悬浮液以产生尺寸分级的介孔二氧化硅纳米颗粒。 该方法还包括蚀刻尺寸分级的中孔二氧化硅纳米颗粒以产生具有构造成接收治疗剂和成像材料之一的中空多孔形态的合成的介孔二氧化硅纳米颗粒。 蚀刻包括在介孔二氧化硅纳米颗粒内的低聚合物密度区域对二氧化硅进行差别蚀刻,并且在介孔二氧化硅纳米颗粒表面附近存在较高聚合物密度的区域中二氧化硅的再沉积。 将目标材料加载到合成的介孔二氧化硅纳米颗粒中,并通过降低介孔二氧化硅纳米颗粒表面的生理pH来提供目标材料的受控释放。

    Synthesis of complex polyamines for ampholyte production
    3.
    发明授权
    Synthesis of complex polyamines for ampholyte production 失效
    用于两性电解质生产的复合多胺的合成

    公开(公告)号:US5322906A

    公开(公告)日:1994-06-21

    申请号:US662297

    申请日:1991-02-27

    摘要: New synthesis and analysis procedures for novel crosslinked polyamines and ampholytes. Polyamines are crosslinked with tartaric acid ester, malonic acid ester, or polycarboxylic acid esters of the citric acid cycle. The resulting crosslinked polyamine may further react with other compounds such as an .alpha.,.beta.-unsaturated or .alpha.-halo unsaturated carboxylic acids to prepare new ampholyte mixtures. The resulting novel ampholytes exhibit greater heterogeneity and complexity than presently prepared ampholytes, and can be used in analytical and preparative isoelectric focusing processes.Novel ampholyte analysis process entails analyzing chemical compounds, usually ampholytes, used in isoelectric focusing processes. The ampholyte is isoelectrically focused on an immobilized pH gradient, and then immersed in a picric acid solution to cause precipitation and visualization of amphoteric species. The isoelectrically focused and visualized ampholyte compounds may be photographed or analyzed densitometrically to compare it with other isoelectrically focused and visualized ampholytes to determine relative heterogeneity of the ampholytes over given pH ranges.

    摘要翻译: 新型交联聚胺和两性电解质的新合成和分析程序。 多胺与柠檬酸循环的酒石酸酯,丙二酸酯或多元羧酸酯交联。 所得交联的多胺可进一步与其它化合物如α,β-不饱和或α-卤代不饱和羧酸反应以制备新的两性电解质混合物。 所得到的新型两性电解质表现出比目前制备的两性电解质更大的异质性和复杂性,并且可用于分析和制备等电聚焦方法。 新型两性电解质分析过程需要分析用于等电聚焦过程的化学化合物,通常为两性电解质。 两性电解质等电点聚焦在固定化的pH梯度上,然后浸入苦味酸溶液中,引起两性物质的沉淀和可视化。 等离子聚焦和可视化的两性电解质化合物可以进行光密度测定或分析,以将其与其他等电聚焦和可视化的两性电解质进行比较,以确定两性电解质在给定pH范围内的相对异质性。

    Synthesis of complex polyamines for ampholyte production
    7.
    发明授权
    Synthesis of complex polyamines for ampholyte production 失效
    用于两性电解质生产的复合多胺的合成

    公开(公告)号:US5428116A

    公开(公告)日:1995-06-27

    申请号:US212588

    申请日:1994-03-11

    摘要: New synthesis and analysis procedures for novel crosslinked polyamines and ampholytes. Polyamines are crosslinked with tartaric acid ester, malonic acid ester, or polycarboxylic acid esters of the citric acid cycle. The resulting crosslinked polyamine may further react with other compounds such as an .alpha.,.beta.-unsaturated or .alpha.-halo unsaturated carboxylic acids to prepare new ampholyte mixtures. The resulting novel ampholytes exhibit greater heterogeneity and complexity than presently prepared ampholytes, and can be used in analytical and preparative isoelectric focusing processes.Novel ampholyte analysis process entails analyzing chemical compounds, usually ampholytes, used in isoelectric focusing processes. The ampholyte is isoelectrically focused on an immobilized pH gradient, and then immersed in a picric acid solution to cause precipitation and visualization of amphoteric species. The isoelectrically focused and visualized ampholyte compounds may be photographed or analyzed densitometrically to compare it with other isoelectrically focused and visualized ampholytes to determine relative heterogeneity of the ampholytes over given pH ranges.

    摘要翻译: 新型交联聚胺和两性电解质的新合成和分析程序。 多胺与柠檬酸循环的酒石酸酯,丙二酸酯或多元羧酸酯交联。 所得交联的多胺可进一步与其它化合物如α,β-不饱和或α-卤代不饱和羧酸反应以制备新的两性电解质混合物。 所得到的新型两性电解质表现出比目前制备的两性电解质更大的异质性和复杂性,并且可用于分析和制备等电聚焦方法。 新型两性电解质分析过程需要分析用于等电聚焦过程的化学化合物,通常为两性电解质。 两性电解质等电点聚焦在固定化的pH梯度上,然后浸入苦味酸溶液中,引起两性物质的沉淀和可视化。 等离子聚焦和可视化的两性电解质化合物可以进行光密度测定或分析,以将其与其他等电聚焦和可视化的两性电解质进行比较,以确定两性电解质在给定pH范围内的相对异质性。

    Method for forming mesoporous silica nanoparticles, mesoporous silica nanoparticles, and applications thereof
    8.
    发明授权
    Method for forming mesoporous silica nanoparticles, mesoporous silica nanoparticles, and applications thereof 有权
    形成介孔二氧化硅纳米粒子,介孔二氧化硅纳米粒子的方法及其应用

    公开(公告)号:US09271936B2

    公开(公告)日:2016-03-01

    申请号:US12382041

    申请日:2009-03-06

    摘要: A method for synthesizing a mesoporous silica nanoparticle, a mesoporous silica nanoparticle, and applications thereof are provided. The method includes fractionating a mesoporous silica nanoparticle suspension to produce size-fractionated mesoporous silica nanoparticle. The method further includes etching the size-fractionated mesoporous silica nanoparticle to produce synthesized mesoporous silica nanoparticle having a hollow, porous morphology configured to receive one of a therapeutic agent and an imaging material. The etching includes differential etching of silica from areas of low polymeric density within the mesoporous silica nanoparticle and re-depositing of the silica in areas of higher polymeric density existing near the surface of the mesoporous silica nanoparticle. A target material is loaded into the synthesized mesoporous silica nanoparticle and a controlled released of the target material is provided by decreasing the physiological pH of the surface of the mesoporous silica nanoparticle.

    摘要翻译: 提供了介孔二氧化硅纳米粒子,介孔二氧化硅纳米粒子的合成方法及其应用。 该方法包括分级介孔二氧化硅纳米颗粒悬浮液以产生尺寸分级的介孔二氧化硅纳米颗粒。 该方法还包括蚀刻尺寸分级的中孔二氧化硅纳米颗粒以产生具有构造成接收治疗剂和成像材料之一的中空多孔形态的合成的介孔二氧化硅纳米颗粒。 蚀刻包括在介孔二氧化硅纳米颗粒内的低聚合物密度区域对二氧化硅进行差别蚀刻,并且在介孔二氧化硅纳米颗粒表面附近存在较高聚合物密度的区域中二氧化硅的再沉积。 将目标材料加载到合成的介孔二氧化硅纳米颗粒中,并通过降低介孔二氧化硅纳米颗粒表面的生理pH来提供目标材料的受控释放。