CN103265952B - Environmental-friendly synthesis method of fluorescent carbon dot with up-down conversion function - Google Patents
Environmental-friendly synthesis method of fluorescent carbon dot with up-down conversion function Download PDFInfo
- Publication number
- CN103265952B CN103265952B CN201310191704.7A CN201310191704A CN103265952B CN 103265952 B CN103265952 B CN 103265952B CN 201310191704 A CN201310191704 A CN 201310191704A CN 103265952 B CN103265952 B CN 103265952B
- Authority
- CN
- China
- Prior art keywords
- fluorescent carbon
- water
- carbon point
- fluorescent
- dialysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 85
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 238000006243 chemical reaction Methods 0.000 title abstract description 39
- 238000001308 synthesis method Methods 0.000 title description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000000502 dialysis Methods 0.000 claims abstract description 20
- 239000006228 supernatant Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 235000002566 Capsicum Nutrition 0.000 claims description 14
- 239000001390 capsicum minimum Substances 0.000 claims description 14
- 238000010189 synthetic method Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 2
- 241000208293 Capsicum Species 0.000 claims 5
- 238000000034 method Methods 0.000 abstract description 21
- 239000002994 raw material Substances 0.000 abstract description 10
- 238000006862 quantum yield reaction Methods 0.000 abstract description 9
- 239000002904 solvent Substances 0.000 abstract description 6
- 239000002253 acid Substances 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000003786 synthesis reaction Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000002161 passivation Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- 230000002194 synthesizing effect Effects 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 4
- 235000002568 Capsicum frutescens Nutrition 0.000 abstract 1
- 239000012466 permeate Substances 0.000 abstract 1
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 14
- 239000000463 material Substances 0.000 description 10
- 240000008574 Capsicum frutescens Species 0.000 description 9
- 238000002189 fluorescence spectrum Methods 0.000 description 8
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 150000001721 carbon Chemical class 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 238000001027 hydrothermal synthesis Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 240000004160 Capsicum annuum Species 0.000 description 4
- 238000004061 bleaching Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 239000008363 phosphate buffer Substances 0.000 description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 235000008534 Capsicum annuum var annuum Nutrition 0.000 description 3
- 235000007862 Capsicum baccatum Nutrition 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000001728 capsicum frutescens Substances 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000011852 carbon nanoparticle Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 230000035800 maturation Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 244000241235 Citrullus lanatus Species 0.000 description 1
- 235000012828 Citrullus lanatus var citroides Nutrition 0.000 description 1
- 240000000560 Citrus x paradisi Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 208000034809 Product contamination Diseases 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 235000015205 orange juice Nutrition 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- -1 rare earth ion Chemical class 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Landscapes
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Luminescent Compositions (AREA)
Abstract
本发明属于荧光碳点的制备领域，公开了一种具有上下转换功能的荧光碳点的合成方法，具体步骤为：将辣椒片加入水中，均匀混合，得混合物；将混合物转移至水热釜内，于120℃-200℃下水热2h-10h；冷却，过滤，得到棕色液体，将棕色液体离心10-20分钟后取上清液，将上清液用截留量为3500透析袋透析，收集透析10-30小时后的透出液，即得荧光碳点。该方法以廉价原料为碳源，以水为溶剂，绿色合成具有上下转换性质的荧光碳点，步骤简单，不需要前处理操作，不需要使用强酸或者表面钝化剂来辅助合成，原料廉价易得，合成条件温和可控，荧光量子产率高，光耐漂白性和稳定性好。
The invention belongs to the field of preparation of fluorescent carbon dots, and discloses a method for synthesizing fluorescent carbon dots with an up-down conversion function. The specific steps are: adding chili flakes to water and uniformly mixing to obtain a mixture; transferring the mixture to a hydrothermal kettle , heated in water at 120°C-200°C for 2h-10h; cooled, filtered to obtain a brown liquid, centrifuged the brown liquid for 10-20 minutes and took the supernatant, dialyzed the supernatant with a dialysis bag with a cutoff of 3500, and collected the dialysis After 10-30 hours, the permeate will be the fluorescent carbon dots. The method uses cheap raw materials as the carbon source and water as the solvent to greenly synthesize fluorescent carbon dots with up-and-down conversion properties. The steps are simple, no pretreatment operation is required, no strong acid or surface passivation agent is needed to assist the synthesis, and the raw materials are cheap and easy. Therefore, the synthetic conditions are mild and controllable, the fluorescence quantum yield is high, and the photobleaching resistance and stability are good.
Description
Technical field
The invention belongs to the preparation field of fluorescent carbon point, be specifically related to a kind of green synthesis method of carbon point.
Background technology
Fluorescent carbon point is as a kind of novel fluorescence nano material, because its good water-soluble, intrinsic unreactiveness, simple chemically modified, higher fast light bleaching, hypotoxicity and good biocompatibility make carbon point be subject to investigator's attention.A lot of method in recent years, such as electrochemical oxidation, hydro-thermal, acid heat solution, template preparation, microwave, ultrasonic, arc-over and laser-induced thermal etching etc. are all used to synthetic fluorescent carbon point.Most of its synthesis device of synthetic method and the costliness of material are, the non-feature of environmental protection of the complexity of operation, by product has limited its suitability for industrialized production and in the widespread use of every field.Wherein hydrothermal method is simple to operate, process is controlled, mild condition is acknowledged as best synthetic method.Utilizing in the method for hydrothermal synthesis of carbon point is that to adopt the small molecules of carbon containing be raw material mostly, or in water-heat process, adds some other materials, thereby such as acid, alkali, inorganic salt or organic solvent change the carbon point that thermal and hydric environment obtains better character.Recently the green material of usining becomes the focus of research as the synthetic fluorescent carbon point of carbon source, because take green material, has the advantages such as low cost, environmental protection as the synthetic carbon point of carbon source.At present, Lu and the member of seminar thereof use pomelo peel to realize Hg as fluorescent probe as carbon source synthesizing blue fluorescent carbon point and with it
2+sensitive Detection; The pyrolysis orange juice in alcohol solvent such as Sahu obtains high strength fluorescent carbon point; Zhou etc. have also obtained by Watermelon rind the fluorescent carbon point that quantum yield is 7.1% by one step hydro thermal method.Yet the carbon that these green synthesis methods obtain is put its lower fluorescence quantum yield and is used auxiliary or the organic solvents such as inorganics; The unicity of its light and the susceptibility of pH etc. has been limited to its widespread use in chemistry, environment, biology and life science, and the synthetic carbon point of these methods has no report, and it possesses upper conversion function.
Up-conversion luminescence is based on two-photon or multiphoton process, luminescence center absorbs two or more photons in succession, through radiationless relaxation, reach luminous energy level, thereby transit to ground state, produce short wavelength photons, be about to low frequency exciting light and convert high frequency utilizing emitted light to.Near infrared light has also brought many advantages as its excitaton source, as darker light penetration depth, to biological tissue, almost not damaged, biological tissue can luminous (without background fluorescences) etc.Traditional up-conversion luminescent material is mainly based on rare earth ion doped gained micron or nanoparticle.But this up-conversion is based on rare earth metal, its building-up process complex operation, resulting materials particle large and synthetic after mostly need to modify, therefore increased the Operating Complexity of application.Relative rare earth up-conversion, the carbon point with up-conversion fluorescence character is synthetic simple, and particle only has several nanometers, does not need rear modification; The environmental protection of carbon point, has less toxicity simultaneously.Therefore, the up-conversion fluorescence of carbon point has wide application space.
The synthetic method of existing carbon point mostly needs a few step operations such as pre-treatment, with strong acid or surface passivation agent, assists and synthesize.Therefore, the apparatus expensive that its synthetic method is used, complicated operation, by-product contamination is serious; Synthetic carbon point stability of photoluminescence is poor, and optical property is subject to extraneous interference and luminous single.And the carbon point that the green cheap raw material of take is at present carbon source Hydrothermal Synthesis scarcely has up conversion property or its up-conversion fluorescence character is poor, and the analytical applications based on its up-conversion fluorescence have not been reported.Therefore be necessary to find a kind of simple, method that the cheap raw material of take synthesizes the fluorescent carbon point with upper and lower transition function as carbon source.
Summary of the invention
For the deficiencies in the prior art, the present invention aims to provide a kind ofly take cheap raw material as carbon source, take water as solvent, the green synthetic fluorescent carbon point with upper and lower conversion character.The method synthesis step is simple, does not need pre-treatment operation, does not need to assist and synthesize with strong acid or surface passivation agent, and raw material is cheap and easy to get, and synthesis condition gentleness is controlled, environmental protection, and fluorescence quantum yield is high, the resistance to bleaching of light and good stability.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A synthetic method with the fluorescent carbon point of upper and lower transition function, concrete steps are:
1) capsicum sheet is added to the water, wherein the mass ratio of capsicum sheet and water is: capsicum sheet: water=1-8:1, evenly mix, and obtain mixture;
2) mixture is transferred in water heating kettle to hydro-thermal 2 h-10 h at 120 ℃-200 ℃;
3) cooling, filter, obtain brown liquid, will after the centrifugal 10-20 of brown liquid minute, get supernatant liquor, by supernatant liquor interception, be 3500 dialysis tubing dialysis, collect the peritoneal effluent after 10-30 hour with dialysis, obtain fluorescent carbon point.
Described in step 1), the mass ratio of capsicum sheet and water is preferably: capsicum sheet: water=2-4:1.
Step 2) preferred hydro-thermal 4-6h at 170 ℃-190 ℃.
Step 2) preferred hydro-thermal 5h at 180 ℃.
Step 3) is preferably 3500 dialysis tubing dialysis by supernatant liquor interception, collects the peritoneal effluent after 20 hours with dialysis.
With respect to existing, take cheap raw material for the method for carbon source hydrothermal synthesis of carbon point, present method does not adopt any additive and uses organic and inorganic reagent, only adopt capsicum and water as reactant, by optimizing the carbon point that recently obtains excellent properties of hydro-thermal time, hydrothermal temperature, raw material and water.Gained carbon is put its fluorescence quantum yield and up conversion property, and to be better than be greatly the synthetic carbon point of carbon source mainly with biomaterial.
Use capsicum for the synthetic fluorescent carbon point with upper and lower conversion character of carbon source, on it, down-conversion fluorescent wavelength is adjustable, can utilize down-conversion fluorescent character on it to realize dual signal detection to hypochlorite.For example, use down-conversion fluorescent and detect the hypochlorite in tap water in dual signal mode, increased reliability and the sensitivity of its detection.On it, under down-conversion fluorescent spectrum and ultraviolet lamp, pictorial diagram is shown in accompanying drawing 3-5.
Compared with prior art, advantage of the present invention is:
1, the method raw material is cheap and easy to get, preparation technology is simple, and synthesis condition gentleness is controlled; Its building-up process is not used chemical additive and is produced pollutent, process environmental protection.
2, the prepared carbon point of the method does not need multistep purifying, separation, and carbon point fluorescence quantum yield is high, reaches 19.2%, is applicable to large-scale industrial production.
3, prepared carbon point good water solubility and the good stability of the method, fast light whitening capacity is strong.At room temperature place some months or continuous light, in high ion concentration and different pH environment its stable luminescence, see accompanying drawing 6-9.
4, the prepared carbon point of the method has very strong upper down-conversion fluorescent, can dual signal detect the hypochlorite in tap water, and its optic response character is shown in accompanying drawing 10-11.
Accompanying drawing explanation
Fig. 1 is the fluorescent carbon point operational flowchart of green synthetic upper and lower conversion character.
Fig. 2 is the transmission electron microscope photo of the stable fluorescent carbon point prepared of the present invention.
Fig. 3 is that gained carbon of the present invention is put the down-conversion fluorescent spectrogram under different excitation wavelengths.
Fig. 4 is that gained carbon of the present invention is put the up-conversion fluorescence spectrogram under different excitation wavelengths.
Fig. 5 is the photo of the stable fluorescent carbon nano-particles prepared of the present invention under ultra violet lamp.
Gained carbon point change in fluorescence figure in Fig. 6 mono-month.
Fig. 7 gained carbon point change in fluorescence figure in different pH.
Fig. 8 gained carbon point change in fluorescence figure in different ionic strength solution.
Fig. 9 gained carbon point fluorescence time scan figure; This carbon point has very strong fast light bleaching.
Figure 10 is fluorescent carbon point down-conversion fluorescent experimental result to clorox sensing in phosphate buffer soln prepared by the present invention; A is the fluorescence spectrum while there is no hypochlorous acid, and b is the fluorescence spectrum of 0.4mmol hypochlorous acid while existing.Show that hypochlorite is sensitive to this carbon point fluorescence response.
Figure 11 is fluorescent carbon point up-conversion fluorescence experimental result to clorox sensing in phosphate buffer soln prepared by the present invention, and wherein a is the fluorescence spectrum while there is no hypochlorous acid, and b is the fluorescence spectrum under 0.4mmol hypochlorous acid exists.Up-conversion fluorescence has increased to the sensitive response of hypochlorite the reliability and the sensitivity that detect.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
embodiment 1:
A method of preparing excellent properties fluorescent carbon point, comprises following operating process, and synthetic route chart is shown in Fig. 1:
Take and eat red pepper as carbon source, water is solvent.The clean fresh chilli sheet of 4 g adds 1 g water, is transferred in the water heating kettle of 25 mL hydro-thermal 5 h at 180 ℃ after evenly mixing.Be cooled to after room temperature, discard large foreign material, obtain brown mixed solution, under 13 krpm, after centrifugal 15 min, get supernatant liquor.By supernatant liquor interception, be 3500 dialysis tubing dialysis 24 hours, collect dialyzate.
The carbon point making is dispersed in deionized water, obtain wavelength of transmitted light within the scope of 400nm-600nm, to be 19.2% have upper and lower conversion character fluorescent carbon point to quantum yield.
Fig. 2 is the transmission electron microscope photo of the stable fluorescent carbon point prepared of the present invention.Fig. 3 is that gained carbon of the present invention is put the down-conversion fluorescent spectrogram under different excitation wavelengths.This carbon point down-conversion fluorescent maximum emission wavelength is at 450nm place, and its wavelength is adjustable, and optical property is stable.Fig. 4 is that gained carbon of the present invention is put the up-conversion fluorescence spectrogram under different excitation wavelengths; Its up-conversion fluorescence maximum emission peak is at 470nm place, and wavelength is adjustable, and optical property is synchronized with down-conversion fluorescent.Fig. 5 is the photo (former figure be photochrome) of the stable fluorescent carbon nano-particles prepared of the present invention under ultra violet lamp.Gained carbon point change in fluorescence figure in Fig. 6 mono-month; This figure shows carbon point good water solubility, and gained carbon point fluorescence is not affected by the medium material of air.Fig. 7 gained carbon point change in fluorescence figure in different pH; The fluorescence of this carbon point light intensity in different pH is stable, is suitable for the analytical applications of various Acid-Base Systems.Fig. 8 gained carbon point change in fluorescence figure in different ionic strength solution; The anti-high ionic strength character of this fluorescence shows its potential application in bioanalysis.Fig. 9 gained carbon point fluorescence time scan figure, this carbon point has very strong fast light bleaching.
Figure 10 is fluorescent carbon point down-conversion fluorescent experimental result to clorox sensing in phosphate buffer soln prepared by the present invention; A is the fluorescence spectrum while there is no hypochlorous acid, and b is the fluorescence spectrum of 0.4mmol hypochlorous acid while existing.Show that hypochlorite is sensitive to this carbon point fluorescence response.Figure 11 is fluorescent carbon point up-conversion fluorescence experimental result to clorox sensing in phosphate buffer soln prepared by the present invention, and wherein a is the fluorescence spectrum while there is no hypochlorous acid, and b is the fluorescence spectrum under 0.4mmol hypochlorous acid exists.Up-conversion fluorescence has increased to the sensitive response of hypochlorite the reliability and the sensitivity that detect.
embodiment 2;
The edible red pepper of maturation of take is carbon source, and water is solvent.Get after the clean capsicum of 4g shreds and add 1g water, be sealed in water heating kettle hydro-thermal 2h at 180 ℃.
Reaction finishes to take out still and is cooled to room temperature, filters out large particulate matter, gets its mixed solution centrifugal removing compared with macroparticle material under 13krpm, and supernatant liquor is transferred in beaker.By supernatant liquor interception, be 3500 dialysis tubing dialysis 24 hours, collect dialyzate.Its fluorescence quantum yield is 14.8%.
embodiment 3;
The edible red pepper of maturation of take is carbon source, and water is solvent.Get after the clean capsicum of 4g shreds and add 1g water, be sealed in water heating kettle hydro-thermal 5h at 140 ℃.
Reaction finishes to take out still and is cooled to room temperature, filters out large particulate matter, gets its mixed solution centrifugal removing compared with macroparticle material under 13krpm, and supernatant liquor is transferred in beaker.By supernatant liquor interception, be 3500 dialysis tubing dialysis 24 hours, collect dialyzate.Its fluorescence quantum yield is 15.6%.
Claims (5)
1. a synthetic method with the fluorescent carbon point of upper and lower transition function, is characterized in that, concrete steps are:
(1) capsicum sheet is added to the water, wherein the mass ratio of capsicum sheet and water is: capsicum sheet: water=1-8:1, evenly mix, and obtain mixture;
(2) mixture is transferred in water heating kettle to hydro-thermal 2 h-10 h at 120 ℃-200 ℃;
(3) cooling, filter, obtain brown liquid, will after the centrifugal 10-20 of brown liquid minute, get supernatant liquor, by supernatant liquor interception, be 3500 dialysis tubing dialysis, collect the peritoneal effluent of dialysis after 10-30 hour, obtain fluorescent carbon point.
2. have according to claim 1 the synthetic method of the fluorescent carbon point of upper and lower transition function, it is characterized in that, the mass ratio of capsicum sheet and water is described in step 1): capsicum sheet: water=2-4:1.
3. according to the synthetic method described in claim 1 or 2 with the fluorescent carbon point of upper and lower transition function, it is characterized in that step 2) be hydro-thermal 4-6 h at 170 ℃-190 ℃.
4. there is according to claim 3 the synthetic method of the fluorescent carbon point of upper and lower transition function, it is characterized in that step 2) be hydro-thermal 5h at 180 ℃.
5. according to the synthetic method described in claim 1 or 2 with the fluorescent carbon point of upper and lower transition function, it is characterized in that, step 3) is 3500 dialysis tubing dialysis by supernatant liquor interception, collects the peritoneal effluent after 20 hours with dialysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191704.7A CN103265952B (en) | 2013-05-22 | 2013-05-22 | Environmental-friendly synthesis method of fluorescent carbon dot with up-down conversion function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191704.7A CN103265952B (en) | 2013-05-22 | 2013-05-22 | Environmental-friendly synthesis method of fluorescent carbon dot with up-down conversion function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103265952A CN103265952A (en) | 2013-08-28 |
| CN103265952B true CN103265952B (en) | 2014-11-05 |
Family
ID=49009618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310191704.7A Expired - Fee Related CN103265952B (en) | 2013-05-22 | 2013-05-22 | Environmental-friendly synthesis method of fluorescent carbon dot with up-down conversion function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103265952B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103833004A (en) * | 2014-02-28 | 2014-06-04 | 东北林业大学 | Method for preparing water-soluble fluorescent carbon nanoparticle dots |
| CN103911151B (en) * | 2014-04-14 | 2015-12-09 | 河南师范大学 | A sulfur-phosphorus-nitrogen co-doped carbon dot with adjustable fluorescence performance and its preparation method |
| CN104263366B (en) * | 2014-09-09 | 2016-01-06 | 中国科学院宁波材料技术与工程研究所 | Red light emitting phosphor carbon point with upper and lower transition function and preparation method thereof |
| CN104403664A (en) * | 2014-11-07 | 2015-03-11 | 山西大学 | Preparation method of green fluorescent carbon spot and application of green fluorescent carbon spot in cell imaging |
| CN104535549B (en) * | 2014-12-30 | 2017-06-16 | 广西师范大学 | The preparation and its application of the fluorescent carbon point nano-probe of free chlorine in a kind of detection water |
| CN104629760B (en) * | 2015-02-09 | 2017-03-01 | 浙江师范大学 | A preparation method of carbon quantum dots for detecting Hg2+ and Fe3+ in water |
| CN104789217B (en) * | 2015-04-28 | 2017-01-18 | 安徽大学 | Amphipathy carbon quantum dot and preparation method thereof |
| CN104927847B (en) * | 2015-05-25 | 2017-07-25 | 浙江师范大学 | A kind of preparation method of carbon quantum dot material for detecting Cu2+ |
| CN104987861A (en) * | 2015-06-23 | 2015-10-21 | 沈阳大学 | Method for preparing carbon dots with up-down conversion luminescence characteristic from maize straw |
| CN105399078A (en) * | 2015-12-28 | 2016-03-16 | 江南大学 | Method for preparing fluorescent carbon dots on basis of shaddock |
| CN105419792A (en) * | 2015-12-28 | 2016-03-23 | 江南大学 | Preparation method of carbon dots soluble in water phase and organic phase |
| CN105969348B (en) * | 2016-05-23 | 2018-03-16 | 中国科学院长春光学精密机械与物理研究所 | A kind of carbon nano-point phosphor, preparation method and LED lamp bead |
| CN108562564B (en) * | 2018-03-29 | 2021-04-02 | 青岛大学 | A kind of carbon quantum dot for inulinase activity detection and preparation method and application |
| CN110104629A (en) * | 2019-05-20 | 2019-08-09 | 河南师范大学 | The method for synthesizing fluorescent carbon point as raw material one step hydro thermal method using wild gleditsia sinensis |
| CN110482527A (en) * | 2019-08-29 | 2019-11-22 | 临沂大学 | A kind of fast preparation method for converting double fluorescent carbon points up and down |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703070A (en) * | 2012-06-01 | 2012-10-03 | 河南师范大学 | Preparation method of stable fluorescent carbon |
| CN102994080A (en) * | 2012-12-07 | 2013-03-27 | 上海大学 | Method for preparing fluoresent carbon nanoparticles |
-
2013
- 2013-05-22 CN CN201310191704.7A patent/CN103265952B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703070A (en) * | 2012-06-01 | 2012-10-03 | 河南师范大学 | Preparation method of stable fluorescent carbon |
| CN102994080A (en) * | 2012-12-07 | 2013-03-27 | 上海大学 | Method for preparing fluoresent carbon nanoparticles |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103265952A (en) | 2013-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103265952B (en) | Environmental-friendly synthesis method of fluorescent carbon dot with up-down conversion function | |
| Wang et al. | Synthesis and applications of red‐emissive carbon dots | |
| Liu et al. | Carbon dots: synthesis, formation mechanism, fluorescence origin and sensing applications | |
| CN108456519B (en) | A kind of nitrogen-doped fluorescent carbon quantum dots and preparation method thereof | |
| CN106753352B (en) | A kind of fluorescent carbon quantum dot of N doping and its preparation method and application | |
| CN103788944B (en) | Simple green synthesis method of nitrogen-doped carbon quantum dots | |
| CN104694121B (en) | A kind of preparation method of the carbon quantum dot composite of rare earth doped europium | |
| CN110155984A (en) | Method and Application of Biomass Fluorescent Carbon Dots Synthesized by Hydrothermal Method Using Soybean Dregs as Raw Material | |
| CN107573933B (en) | A carbon quantum dot-copper ion fluorescent probe and its preparation method and application | |
| CN103232029B (en) | Preparation method and application of green fluorescent carbon dots | |
| CN108410457A (en) | A kind of Multifunction fluorescent carbon quantum dot and its preparation method and application | |
| Cui et al. | Simultaneously enhancing up-conversion fluorescence and red-shifting down-conversion luminescence of carbon dots by a simple hydrothermal process | |
| CN104388083B (en) | A kind of method synthesizing glassy yellow fluorescent carbon point | |
| CN106829917A (en) | A kind of carbon quantum dot and its application | |
| CN106701069B (en) | A kind of preparation method of wavelength-controllable, long-wave emission fluorescent carbon-based nanodots | |
| CN106587007A (en) | Nitrogen-sulfur-doped pH-sensitive carbon quantum dots and preparing method and application | |
| CN102134485B (en) | Method for mass production of water-soluble fluorescent carbon nanoparticles | |
| CN108545715A (en) | A kind of preparation method for the red fluorescence carbon dots that transmitting does not change with excitation wavelength | |
| CN107502349B (en) | Preparation method of water-soluble bluish violet light carbon quantum dots | |
| CN103922314A (en) | Fluorescent carbon nanoparticles as well as preparation method and application thereof | |
| CN105752975B (en) | The method that electron beam irradiation prepares fluorescence graphene quantum dot | |
| CN113845903B (en) | Large-scale synthesis method and application of near-infrared luminescent carbon dots | |
| CN105694879A (en) | Method for preparing carbon dots from organic wastewater and realizing coagulation recovery of carbon dots | |
| CN113150776B (en) | Red fluorescent carbon quantum dot, preparation method thereof and fluorescent probe | |
| CN104610964A (en) | Preparation method of wavelength adjustable fluorescent carbon dot and application of fluorescent carbon dot in mercury ion detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20170522 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |