CN113185973A - Preparation method of zero-dimensional nano carbon material/origami structure deoxyribonucleic acid composite material - Google Patents
Preparation method of zero-dimensional nano carbon material/origami structure deoxyribonucleic acid composite material Download PDFInfo
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- CN113185973A CN113185973A CN202110369392.9A CN202110369392A CN113185973A CN 113185973 A CN113185973 A CN 113185973A CN 202110369392 A CN202110369392 A CN 202110369392A CN 113185973 A CN113185973 A CN 113185973A
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- 108020004414 DNA Proteins 0.000 title claims abstract description 58
- 102000053602 DNA Human genes 0.000 title claims abstract description 41
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 229910021392 nanocarbon Inorganic materials 0.000 title claims abstract description 11
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000003575 carbonaceous material Substances 0.000 title claims description 5
- 239000006185 dispersion Substances 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 26
- 239000002096 quantum dot Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000011259 mixed solution Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 16
- 239000000872 buffer Substances 0.000 claims description 6
- 239000012467 final product Substances 0.000 claims description 6
- 238000000108 ultra-filtration Methods 0.000 claims description 6
- 239000007853 buffer solution Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 239000002086 nanomaterial Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- -1 gold ions Chemical class 0.000 description 2
- 231100000053 low toxicity Toxicity 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001338 self-assembly Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/65—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/194—After-treatment
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H1/00—Processes for the preparation of sugar derivatives
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H21/00—Compounds containing two or more mononucleotide units having separate phosphate or polyphosphate groups linked by saccharide radicals of nucleoside groups, e.g. nucleic acids
- C07H21/04—Compounds containing two or more mononucleotide units having separate phosphate or polyphosphate groups linked by saccharide radicals of nucleoside groups, e.g. nucleic acids with deoxyribosyl as saccharide radical
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Abstract
A preparation method of a zero-dimensional nanocarbon material/folded paper structure deoxyribonucleic acid composite material comprises the steps of respectively preparing folded paper DNA dispersion liquid and graphene quantum dot water dispersion liquid, fully mixing the folded paper DNA dispersion liquid and the graphene quantum dot water dispersion liquid for reaction, and then concentrating and dialyzing the reacted mixed solution to remove redundant graphene quantum dots to obtain the composite material. According to the invention, the Graphene Quantum Dots (GQDs) and the paper folding DNA are coated on the surface of the paper folding DNA by utilizing the electrostatic adsorption effect of the graphene quantum dots and the paper folding DNA, so that the graphene quantum dots are attached to the surface of the paper folding DNA structure, and the environmental adaptability of the paper folding DNA is improved.
Description
Technical Field
The invention relates to a technology in the field of deoxyribonucleic acid engineering, in particular to a preparation method of a zero-dimensional nano carbon material/origami structure deoxyribonucleic acid composite material.
Background
The paper folding DNA is a two-dimensional or three-dimensional DNA nano structure which can be formed by self-assembly by utilizing the self-assembly and sequence programmability of DNA molecules and designing the hybridization relationship among DNA chains. The metal nano-structure and the pattern can be further constructed by taking the metal nano-structure as a template material. However, the existing technical means for preparing the folded paper DNA composite material mostly adopts noble metal ions (gold ions, silver ions and the like) or semiconductor materials (silicon, silicon dioxide and the like) to be compounded with the folded paper DNA, and the composite material prepared by the technology has poor biocompatibility and low environmental friendliness.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a preparation method of a zero-dimensional nanocarbon material/origami structure deoxyribonucleic acid composite material, which is characterized in that Graphene Quantum Dots (GQDs) and origami DNA (deoxyribonucleic acid) electrostatic adsorption are utilized to coat the graphene quantum dots on the surface of the origami DNA, so that the graphene quantum dots are attached to the surface of the origami DNA structure, and the environmental adaptability of the origami DNA is improved.
The invention is realized by the following technical scheme:
the invention relates to a preparation method of a zero-dimensional nanocarbon material/folded paper structure deoxyribonucleic acid composite material.
The volume ratio of the folded paper DNA dispersion liquid to the graphene quantum dot water dispersion liquid is 0.5: 1-2: 1.
The paper folding DNA dispersion liquid is prepared by placing paper folding DNA obtained by regulation and control in a Mg-containing atmosphere2+The buffer solution is dispersed, and the concentration of the buffer solution is 0.1 nM-1 nM.
The graphene quantum dot water dispersion liquid is obtained by dispersing graphene quantum dots with the transverse size smaller than 40nm in deionized water, and the concentration of the graphene quantum dot water dispersion liquid is 0.01-1 mg/mL.
The intensive mixing reaction is as follows: stirring for 10 s-10 min under the condition that the stirring speed is 120-360 r/min.
Technical effects
The invention integrally solves the problems that the prior art can only modify the DNA of the origami by metal ions or semiconductor materials, and the introduction of heavy metals increases the biocompatibility of the composite material and has low environmental friendliness. Compared with the prior art, the invention adopts the zero-dimensional nano material with excellent physicochemical characteristics, such as low toxicity, good water dispersibility, low chemical activity, stable fluorescence property and the like, namely the graphene quantum dot is compounded with the folded paper DNA, so that the folded paper DNA is endowed with the corresponding physicochemical characteristics of the graphene quantum dot.
Drawings
FIG. 1 is an AFM height image of the graphene quantum dot/square origami DNA composite prepared in example 1;
fig. 2 is an AFM phase diagram of the graphene quantum dot/square paper folding DNA composite material prepared in example 1.
Detailed Description
Example 1
The embodiment comprises the following steps: preparation of a composition containing Mg2+0.1nM of square origami DNA dispersion in buffer; preparing 0.05mg/mL graphene quantum dot water dispersion liquid with the transverse dimension smaller than 40 nm; and (3) mixing the square folded paper DNA dispersion liquid and the graphene quantum dot water dispersion liquid according to the volume ratio of 1: 1 mixing, stirring for 10s under the condition that the stirring speed is 360 r/min for full reaction, and passing the mixed solution after the reaction through a 30K ultrafiltration tubeAnd (5) concentrating, dialyzing, and removing redundant graphene quantum dots to obtain a final product.
As shown in fig. 1 and 2, the graphene quantum dot/origami DNA composite material has dual morphological characteristics of the granular graphene quantum dot and the square origami DNA.
Example 2
The embodiment comprises the following steps: preparation of a composition containing Mg2+1nM of square origami DNA dispersion in buffer; preparing 1mg/mL graphene quantum dot water dispersion liquid with the transverse dimension smaller than 40 nm; and (3) mixing the square folded paper DNA dispersion liquid and the graphene quantum dot water dispersion liquid according to the volume ratio of 2:1, stirring for 5min under the condition that the stirring speed is 200 r/min for full reaction, concentrating the reacted mixed solution through a 30K ultrafiltration tube, dialyzing, and removing redundant graphene quantum dots to obtain a final product.
Example 3
The embodiment comprises the following steps: preparation of a composition containing Mg2+0.5nM triangular origami DNA dispersion in buffer; preparing 0.01mg/mL graphene quantum dot water dispersion liquid with the transverse dimension smaller than 40 nm; and (3) mixing the square origami DNA dispersion solution and the graphene quantum dot water dispersion solution according to the volume ratio of 0.5:1, stirring for 10min under the condition that the stirring speed is 120 r/min for full reaction, concentrating the reacted mixed solution through a 30K ultrafiltration tube, dialyzing, and removing redundant graphene quantum dots to obtain a final product.
The invention adopts zero-dimensional nano material with excellent physicochemical characteristics, such as low toxicity, good water dispersibility, low chemical activity, stable fluorescence property and the like, namely graphene quantum dots to be compounded with folded paper DNA, and endows the folded paper DNA with corresponding physical and chemical characteristics of the graphene quantum dots.
The foregoing embodiments may be modified in many different ways by those skilled in the art without departing from the spirit and scope of the invention, which is defined by the appended claims and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
1. A preparation method of a zero-dimensional nanocarbon material/folded paper structure deoxyribonucleic acid composite material is characterized in that folded paper DNA dispersion liquid and graphene quantum dot water dispersion liquid are respectively prepared and fully mixed for reaction, and then the reacted mixed solution is concentrated and dialyzed to remove redundant graphene quantum dots to obtain the composite material;
the volume ratio of the folded paper DNA dispersion liquid to the graphene quantum dot water dispersion liquid is 0.5: 1-2: 1.
2. The method for preparing zero-dimensional nanocarbon material/origami-structured deoxyribonucleic acid composite material according to claim 1, wherein the origami DNA dispersion is prepared by placing origami DNA obtained by regulation and control in a Mg-containing atmosphere2+The buffer solution is dispersed, and the concentration of the buffer solution is 0.1 nM-1 nM.
3. The method for preparing the zero-dimensional nanocarbon material/origami structure deoxyribonucleic acid composite material according to claim 1, wherein the graphene quantum dot water dispersion liquid is obtained by dispersing graphene quantum dots with the transverse dimension of less than 40nm in deionized water, and the concentration of the graphene quantum dots is 0.01 mg/mL-1 mg/mL.
4. The method for preparing the zero-dimensional nano carbon material/origami structure deoxyribonucleic acid composite material according to claim 1, wherein the intensive mixing reaction is as follows: stirring for 10 s-10 min under the condition that the stirring speed is 120-360 r/min.
5. The method for preparing the zero-dimensional nano carbon material/origami structure deoxyribonucleic acid composite material according to any one of claims 1 to 4, which is characterized by being realized in any one of the following modes:
firstly, preparing Mg-containing2+0.1nM of square origami DNA dispersion in buffer; preparing 0.05mg/mL graphene quantum dot water dispersion liquid with the transverse dimension smaller than 40 nm; and (3) mixing the square folded paper DNA dispersion liquid and the graphene quantum dot water dispersion liquid according to the volume ratio of 1: 1 mixing, stirring for 10s under the condition that the stirring speed is 360 r/min for full reaction, and subjecting the reacted mixed solution to reactionConcentrating by using a 30K ultrafiltration tube, dialyzing, and removing redundant graphene quantum dots to obtain a final product;
② preparing Mg-containing2+1nM of square origami DNA dispersion in buffer; preparing 1mg/mL graphene quantum dot water dispersion liquid with the transverse dimension smaller than 40 nm; and (3) mixing the square folded paper DNA dispersion liquid and the graphene quantum dot water dispersion liquid according to the volume ratio of 2:1, mixing, stirring for 5min under the condition that the stirring speed is 200 r/min for full reaction, concentrating the reacted mixed solution through a 30K ultrafiltration tube, dialyzing, and removing redundant graphene quantum dots to obtain a final product;
③ preparing Mg-containing2+0.5nM triangular origami DNA dispersion in buffer; preparing 0.01mg/mL graphene quantum dot water dispersion liquid with the transverse dimension smaller than 40 nm; and (3) mixing the square origami DNA dispersion solution and the graphene quantum dot water dispersion solution according to the volume ratio of 0.5:1, stirring for 10min under the condition that the stirring speed is 120 r/min for full reaction, concentrating the reacted mixed solution through a 30K ultrafiltration tube, dialyzing, and removing redundant graphene quantum dots to obtain a final product.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159170A (en) * | 2013-03-06 | 2013-06-19 | 中国科学院苏州纳米技术与纳米仿生研究所 | Three-dimensional nano-structure construction method |
| CN104133053A (en) * | 2014-05-28 | 2014-11-05 | 上海纳米技术及应用国家工程研究中心有限公司 | Detection method using DNA nano-origami structure as signal amplification probe |
| CN106620725A (en) * | 2017-02-16 | 2017-05-10 | 国家纳米科学中心 | Optical and opto-acoustic integration dual-mode molecular image probe as well as preparation method and application thereof |
| US20170152385A1 (en) * | 2015-11-27 | 2017-06-01 | Institute Of Process Engineering, Chinese Academy Of Sciences | Method for preparation of carbon quantum dots and application |
| CN109706221A (en) * | 2018-09-21 | 2019-05-03 | 湘潭大学 | A method for quantitative detection of mutant DNA based on GQDs-based resonance light scattering probe combined with CHA technology |
| CN110243792A (en) * | 2019-06-11 | 2019-09-17 | 山东师范大学 | A fluorescent chemical sensor based on quantum dot and tetrahedral DNA structure and its detection method and application |
| EP3699142A1 (en) * | 2019-02-20 | 2020-08-26 | Instytut Chemii Fizycznej Polskiej Akademii Nauk | Method of immobilization nucleic acid structure on surface of graphene, graphene modified by immobilization of nucleic acid structure and its use |
| CN111638330A (en) * | 2020-06-10 | 2020-09-08 | 青岛农业大学 | Biosensor for detecting salmonella typhimurium and application thereof |
| CN112129788A (en) * | 2020-09-16 | 2020-12-25 | 南京大学 | Super-resolution microscale based on quantum dot and DNA origami nano-assembly structure |
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2021
- 2021-04-06 CN CN202110369392.9A patent/CN113185973B/en active Active
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