Preparation method of polymer core nano ring of core-shell structure

A core-shell structure and polymer technology, applied in the field of nanomaterials, can solve the problems of irregular nanoring structure, uncontrollable size, and high structural parameters, and achieve simple and efficient preparation methods, easy modification and hybridization, and low structural parameters. Effect

Inactive Publication Date: 2018-12-04
FUDAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the nanorings prepared by existing research methods are irregular in structure (Science2004, 306, 94-97), or the size cannot be adjusted (Angewandte Chemie International Edition2009, 48, 4594-4597)
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Method used

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  • Preparation method of polymer core nano ring of core-shell structure
  • Preparation method of polymer core nano ring of core-shell structure
  • Preparation method of polymer core nano ring of core-shell structure

Examples

Experimental program
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Example Embodiment

[0026] Example 1, PEG 113 - b -P4VP 76 / 8592 bp circular DNA nanoring preparation

[0027] 4mgPEG 113 - b -P4VP 76 Dissolve in 2mL methanol, slowly add 3mL saturated carbon dioxide water to it under stirring, then slowly add 1mL 8592bpcircularDNA aqueous solution (0.2mg / mL), after fully stirring for 4h, slowly add 14mL carbon dioxide water, after stable 24h, add 1μL1, 4-Dibromobutane crosslinked for 48h.

Example Embodiment

[0028] Example 2 PEG 113 - b -P4VP 100 Preparation of / 8592 bp circularDNA nanoring

[0029] 4mg PEG 113 - b -P4VP 100 Dissolve in 2mL methanol, slowly add 3mL saturated carbon dioxide water to it under stirring, then slowly add 1mL 8592 bpcircularDNA aqueous solution (0.2mg / mL), after fully stirring for 4h, slowly add 14mL carbon dioxide water, after stable 24h, add 1μL1 ,4-Dibromobutane cross-linked for 48h.

Example Embodiment

[0030] Example 3. PEG 113 - b -P4VP 76 Preparation of / 5522 bp circularDNA nanoring

[0031] 4mg PEG 113 - b -P4VP 76 Dissolve in 2mL methanol. Under stirring, slowly add 3mL saturated carbon dioxide water, and then slowly add 1mL 5522 bpcircularDNA aqueous solution (0.2mg / mL). After fully stirring for 4h, slowly add 14mL carbon dioxide water. After stable for 24h, add 1μL1 ,4-Dibromobutane crosslinked for 48 h.

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Abstract

The invention belongs to the technical field of nanometer materials, and particularly relates to a preparation method of a polymer core nano ring of a core-shell structure. According to the invention,amphiphilic block polymer (wherein one block is hydrophobic poly(4-vinylpyridine) or hydrophobic amine polymer) and annular DNA are taken as raw materials, and the hydrophobic block is firstly complexed with DNA in a protonated water/methanol (or a good solvent of an amine polymer) environment, poor solvent water is continuously added, the block polymer forms the nano ring using hydrophobic polypoly(4-vinylpyridine) or hydrophobic amine polymer as the core. The method can be used for preparing the polymer nano rings with the tailored core-shell structure with different sizes, the preparationprocess is simple and convenient, and the core of the polymer nano ring can be subjected to functional modification, so that the hybrid of the polymer nano ring can be realized, and the polymer nano ring can be used as a template to prepare the composite material with excellent performances.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a preparation method of a polymer nanoring with a core-shell structure. Background technique [0002] The structure of a material determines its performance, so people have been working on the study of materials with different structures, such as hollow structures, porous structures, bicontinuous phase structures, etc. These materials with different scales and structures are used in catalysis, electrochemistry, biomedicine, etc. , photothermal and other fields have different applications. Among the many structures, the nanoring is a unique structure. In nature, many biomolecules exist in a circular structure, especially in some viruses, bacteria or sperm cells, the DNA that exists in a circular structure and protein are very common. The well-known carbon nanotubes in nature also have a ring structure. This ring structure has unique electromagnetic properties, ...

Claims

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Application Information

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IPC IPC(8): C08J3/24C08L87/00C08L53/00
CPCC08J3/24C08J2353/00C08J2387/00
Inventor 陈道勇王伟冲李会亚李嫣然
Owner FUDAN UNIV
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