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Method for removing ctab in gold nanorod solution

A technology of gold nanorods, GNR-CTAB, which is applied in the direction of separation methods, chemical instruments and methods, and separation of sediments by centrifugal force, etc., can solve the problems of gold nanorods agglomeration and affecting performance, and achieve the effect of simple operation and high efficiency

Active Publication Date: 2022-07-12
杭州苏铂科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The problem solved by the present invention is that the existing method for removing CTAB in the gold nanorod solution will cause the gold nanorods to agglomerate, thereby affecting performance; in order to solve the problem, the present invention provides a method for removing CTAB on the surface of the gold nanorods

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  • Method for removing ctab in gold nanorod solution
  • Method for removing ctab in gold nanorod solution

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Embodiment Construction

[0023] Hereinafter, the spirit and essence of the present invention will be further described with reference to the accompanying drawings and embodiments.

[0024] In the following description, the invention is described with reference to various embodiments. However, one skilled in the art will recognize that the various embodiments may be practiced without one or more of the specific details or with other alternative and / or additional methods, materials or components. In other instances, well-known structures, materials, or operations are not shown or described in detail so as not to obscure aspects of the various embodiments of the invention. Similarly, for purposes of explanation, specific quantities, materials and configurations are set forth in order to provide a thorough understanding of the embodiments of the invention. However, the present invention may be practiced without the specific details. Furthermore, it is to be understood that the various embodiments shown ...

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Abstract

The invention provides a method for removing CTAB on the surface of gold nanorods. The GNR-DDT solution is placed in toluene, and then methanol is added. After the GNR-DDT is precipitated, the supernatant is removed, and the GNR-DDT precipitate is suspended in the toluene; step 3, the suspension formed in step 2 is mixed with toluene, MHA and water were mixed, and the mixed solution was made to perform a reflux motion while stirring, until the aggregation of gold nanorods was observed. The CTAB on the surface of the gold nanorod can be removed by the method provided by the present invention.

Description

technical field [0001] The invention relates to the field of gold nanorod cleaning, in particular to a method for removing CTAB in a gold nanorod solution. Background technique [0002] Gold nanorods (GNRs) have tunable optical properties, anisotropic shapes that become highly sensitive to the surrounding refractive index, and easy functionalization, showing great potential in many biological applications, including: sensory, bioimaging, drug delivery and photothermal therapy. [0003] The process of forming gold nanorods needs to use cetyltrimethylammonium bromide (CTAB), so the formed gold nanorod solution contains a large amount of CTAB. Due to the strong cytotoxicity of CTAB and the high degradability of cell membranes, the CTAB layer greatly limits the biological application of gold nanorods. Besides, the CTAB layer on the surface of gold nanorods is difficult to functionalize, which hinders its application in biometrics. Therefore, the removal of CTAB on the surface...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D21/00B01D21/26B01D21/28
CPCB01D21/00B01D21/28B01D21/26B01D21/283
Inventor 周宇托尼·卡斯丹尼尔·埃尔森徐建华周玄杨光
Owner 杭州苏铂科技有限公司