CN104087296B - The method of fluorescent carbon quantum dot is prepared in a kind of laser irradiation - Google Patents
The method of fluorescent carbon quantum dot is prepared in a kind of laser irradiation Download PDFInfo
- Publication number
- CN104087296B CN104087296B CN201410323271.0A CN201410323271A CN104087296B CN 104087296 B CN104087296 B CN 104087296B CN 201410323271 A CN201410323271 A CN 201410323271A CN 104087296 B CN104087296 B CN 104087296B
- Authority
- CN
- China
- Prior art keywords
- quantum dot
- carbon source
- carbon quantum
- fluorescent
- carbon
- 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.)
- Active
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 24
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 42
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 38
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 10
- 150000001555 benzenes Chemical class 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- 239000010453 quartz Substances 0.000 claims description 20
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- QNLZIZAQLLYXTC-UHFFFAOYSA-N 1,2-dimethylnaphthalene Chemical compound C1=CC=CC2=C(C)C(C)=CC=C21 QNLZIZAQLLYXTC-UHFFFAOYSA-N 0.000 claims description 10
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 10
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 125000003944 tolyl group Chemical group 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 14
- 239000002245 particle Substances 0.000 abstract description 7
- 238000004020 luminiscence type Methods 0.000 abstract description 6
- -1 and result shows Chemical compound 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract description 2
- 229910002804 graphite Inorganic materials 0.000 abstract description 2
- 239000010439 graphite Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 14
- 238000001228 spectrum Methods 0.000 description 13
- 238000012360 testing method Methods 0.000 description 13
- 238000000862 absorption spectrum Methods 0.000 description 10
- 230000003287 optical effect Effects 0.000 description 7
- 239000002096 quantum dot Substances 0.000 description 6
- 241000931526 Acer campestre Species 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000000338 in vitro Methods 0.000 description 4
- 238000004647 photon scanning tunneling microscopy Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000004506 ultrasonic cleaning Methods 0.000 description 4
- 230000001476 alcoholic effect Effects 0.000 description 3
- 238000002189 fluorescence spectrum Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001241 arc-discharge method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000608 laser ablation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 238000001338 self-assembly Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000003917 TEM image Methods 0.000 description 1
- ISQINHMJILFLAQ-UHFFFAOYSA-N argon hydrofluoride Chemical compound F.[Ar] ISQINHMJILFLAQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003013 cytotoxicity Effects 0.000 description 1
- 231100000135 cytotoxicity Toxicity 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000004627 transmission electron microscopy Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- IGELFKKMDLGCJO-UHFFFAOYSA-N xenon difluoride Chemical compound F[Xe]F IGELFKKMDLGCJO-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Luminescent Compositions (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a kind of method that fluorescent carbon quantum dot is prepared in laser irradiation, it is characterized in that: with the one in benzene, substituted benzene or many benzene ring compounds for carbon source, the carbon source that is in a liquid state by wavelength irradiation under ultraviolet ray within 380nm or irradiate is dissolved in the carbon source solution that obtains in ethanol 1～120 minute by the carbon source in solid-state, obtains fluorescent carbon quantum dot.Carbon source and solution thereof that the present invention uses are single, carbon source selects variation, laser power and exposure time controllability that preparation process adopts are good, can carry out under room temperature, the carbon quantum dot particle diameter obtained, at 2～7nm, has well-regulated crystal structure of graphite, and result shows, carbon quantum dot prepared by the method, without finishing, namely shows the fluorescent characteristic of luminescence generated by light.
Description
Technical field
The invention belongs to quantum dot technology of preparing, be specifically related to a kind of method that fluorescent carbon quantum dot is prepared in laser irradiation.
Background technology
Quantum dot (QDs) is because of its special optics, electrical properties, receive greatly paying close attention to and widely studied of research worker, and carbon quantum dot (CQDs) is a kind of environmentally friendly nano-luminescent material having similar optical property to semiconductor-quantum-point, not only there is excellent optical performance, the various advantages that the conventional semiconductors such as size is little have, and there is good biocompatibility, cytotoxicity is low, preparation cost is cheap, reaction condition is gentle and is prone to the advantage of scale synthesis and modification etc., huge potential value is had shown that at bio-sensing and medical imaging field.Carbon quantum dot is the class size Nano-function thin films at below 10nm, is found first in the purge process preparing CNT by electrophoresis method.Existing synthetic method can be summarized as chemical method and the big class of Physical two: chemical method includes electrochemical process, oxidizing process, microwave assisting method and template etc.；Physical includes arc discharge method and laser ablation method etc..Summing up, environment can be produced to pollute by chemical method in the process of preparation, and it is low that arc discharge method prepares quantum point efficiency, and microwave method and laser ablation method are easy to make but need multiple reactant, complicated process of preparation.In addition, no matter existing preparation method is Physical or chemical method, in order to make the carbon quantum dot of gained possess fluorescent characteristic, be required in preparation process add coating material quantum dot is modified, so not only increase process complexity, also improve cost simultaneously.[SunYP, Z.B., LinY, etal.Quantum-SizedCarbonDotsforBrightandColorfulPhotolum inescence.J.Am.Chem.Soc.2006,128 (24): 7756-7762.；Wang, F., etal.One-StepSynthesisofHighlyLuminescentCarbonDotsinNon coordinatingSolvents.Chem.Mater.2010,22 (16): 4528-4530.]
Summary of the invention
It is an object of the invention to provide a kind of preparation process simple, the preparation method that fluorescent carbon quantum dot is prepared in the laser irradiation that experiment condition controllability is good, to be solved technical problem is that the fluorescent characteristic making the carbon quantum dot obtained namely show luminescence generated by light without finishing.
This invention address that technical problem, adopt the following technical scheme that
The method of fluorescent carbon quantum dot is prepared in laser irradiation of the present invention, it is characterized in: with the one in benzene, substituted benzene or many benzene ring compounds for carbon source, the carbon source that is in a liquid state by wavelength irradiation under ultraviolet ray within 380nm or irradiate is dissolved in the carbon source solution that obtains in ethanol 1～120 minute by the carbon source in solid-state, obtains fluorescent carbon quantum dot；Namely when carbon source is liquid, it is irradiated either directly through ultraviolet light, when carbon source is solid-state, is dissolved in alcoholic solution and is irradiated again, simultaneously because benzene, substituted benzene or many benzene ring compounds are more apparent to UV Absorption, therefore select the laser within 380nm as irradiation source.
Described substituted benzene is selected from toluene.
Described many benzene ring compounds are selected from naphthalene, dimethylnaphthalene.
Described irradiation under ultraviolet ray is to be completed with the condition of pulse power 120mJ～400mJ and operating frequency 1～20Hz by rare gas list halogenide excimer laser.
Concretely comprising the following steps of the method for fluorescent carbon quantum dot is prepared in laser irradiation of the present invention:
The carbon source being in a liquid state by 1～100mL or irradiation are dissolved in the carbon source solution obtained in ethanol and load in quartz container by the carbon source in solid-state; in described quartz container, pass into argon protect; then quartz container is sealed; by rare gas list halogenide excimer laser through described quartz container with carbon source described in wavelength irradiation under ultraviolet ray within 380nm 1～120 minute; pulse power selection is 120mJ～400mJ; operating frequency is chosen as 1～20Hz; obtaining fluorescent carbon quantum dot, described fluorescent carbon quantum dot is dispersed in original solution.
Described quartz container is the quartz test tube prepared with saturating far ultraviolet optical quartz glass or saturating ultraviolet optics quartz glass or quartz beaker.
Rare gas list halogenide excimer laser can provide the ultraviolet light of different wave length with different quasi-molecule gas, for instance argon fluoride (193nm ultraviolet light), KrF (248nm ultraviolet light), chlorination xenon (308nm ultraviolet light), xenon fluoride (351nm ultraviolet light) etc..The feature of excimer laser is that the burst length is short, and pulse output energy is high, and for the pulse of pulsewidth 20ns single pulse energy 100mJ, pulse moment mean power is up to 106Watt, therefore the molecule of benzene, substituted benzene or many benzene ring compounds is after multiphoton absorption, c h bond in molecule ruptures, simultaneously, owing to C-C key bond energy relatively c h bond bond energy is high, C-C key is more stable, therefore, when molecule carries out self assembly after c h bond fracture, generate, by tending to, the more stable carbon quantum dot closed by C-C bond.
Compared with the prior art, beneficial effects of the present invention is embodied in:
1, the present invention uses carbon source and solution thereof are single, carbon source selects variation, laser power and exposure time controllability that preparation process adopts are good, can carry out under room temperature, the carbon quantum dot particle diameter obtained, at 2～7nm, has well-regulated crystal structure of graphite, and result shows, carbon quantum dot prepared by the method, without finishing, namely shows the fluorescent characteristic of luminescence generated by light.
2, the preparation method of fluorescent carbon quantum dot of the present invention has originality, there is notable difference in the preparation with existing carbon quantum dot, neither the chemical synthesis of " from bottom to top ", neither " from top to bottom " Physical, but adopt laser means to make the c h bond of phenyl ring quasi-molecule rupture, retain the C-C key on phenyl ring and big π key thereof, and then carried out self assembly by molecule, form the carbon quantum dot of graphite-structure；
3, the carbon quantum dot prepared by the present invention, it is not necessary to namely finishing has fluorescent effect, solves carbon quantum dot luminescence generated by light this problem of difficulty of non-surface modification；
4, the carbon source of fluorescent carbon quantum dot of the present invention selects variation, it is possible to for any one in benzene, substituted benzene or many benzene ring compounds.
Accompanying drawing explanation
Fig. 1 is the preparation process schematic diagram that fluorescent carbon quantum dot is prepared in laser irradiation of the present invention；
Fig. 2 is the carbon quantum dot transmission electron microscope TEM image prepared by embodiment 1；
Fig. 3 is the carbon quantum dot PSTM STM image prepared by embodiment 1；
Fig. 4 is the carbon quantum dot absorption spectrum curve prepared by embodiment 1 and fluorescent spectrum curve thereof；
Fig. 5 is the carbon quantum dot PSTM STM image prepared by embodiment 2；
Fig. 6 is the carbon quantum dot absorption spectrum curve prepared by embodiment 2 and fluorescent spectrum curve thereof；
Fig. 7 is the carbon quantum dot absorption spectrum curve prepared by embodiment 3 and fluorescent spectrum curve thereof；
Fig. 8 is the carbon quantum dot absorption spectrum curve prepared by embodiment 4 and fluorescent spectrum curve thereof；
Number in the figure: 1 quartz test tube；2 carbon sources；3 excimer lasers；4 light paths.
Specific embodiment
The following is embodiments of the invention, but the present invention is not limited only to this.
Embodiment 1
The present embodiment prepares fluorescent carbon quantum dot using toluene as carbon source, and preparation method is shown in Fig. 1, specifically comprises the following steps that
(1) under room temperature, quartz test tube 1 is clean with ultrasonic cleaning, add 4mL toluene as carbon source 2 after drying through airtight, seal after being in vitro filled with argon shield；
(2) selecting the ultraviolet light that optical maser wavelength is 248nm of excimer laser 3, pulse power selection 130mJ, operating frequency selects 5Hz, and with non-focusing mode irradiation 10 minutes, light path 4 was shown in Fig. 1；In gained quartz test tube, pale yellow-green liquid is the toluene solution of fluorescent carbon quantum dot；
Using the pattern of NEC JEM-2100F transmission electron microscopy this example fluorescent carbon quantum dot, result is as shown in Figure 2, it can be seen that in product, major part carbon quantum dot particle diameter is at 3～7nm, and minute quantity carbon quantum dot particle diameter is more than 10nm.
Building nanometer AJ-I type PSTM (STM) scans the pattern of this example fluorescent carbon quantum dot to use Shanghai to like, result is as it is shown on figure 3, it can also be seen that the particle diameter of this quantum dot is 3～7nm.
Shimadzu UV3600 is used to test toluene and the absorption spectrum curve of carbon quantum dot mixed solution, result is as shown in Figure 4, in figure, 282nm adnexa has a stronger intrinsic absorbed spectrum, has a small absworption peak near 380nm, and near 330nm-360nm, absworption peak is inconspicuous；Fluorescent spectrum curve in Fig. 4 is measured by Hitachi fluorescence spectrophotometer F4600, and result shows the fluorescent characteristic that all there is luminescence generated by light in 345nm-380nm scope, and launches wavelength at 410nm-475nm blue green light.Its emission spectrum scope is uneven corresponding with institute's carbon determination quantum point grain diameter size in Fig. 2.
Embodiment 2
The present embodiment prepares fluorescent carbon quantum dot using benzene as carbon source, and preparation method is shown in Fig. 1, specifically comprises the following steps that
(1) under room temperature, quartz test tube is clean with ultrasonic cleaning, add 4mL benzene after drying through airtight, seal after being in vitro filled with argon shield；
(2) selecting the ultraviolet light that optical maser wavelength is 248nm of excimer laser, pulse power selection 147mJ, operating frequency selected 10Hz, with non-focusing mode irradiation 10 minutes；
(3) in gained quartz test tube, pale yellow-green liquid is the benzole soln of fluorescent carbon quantum dot；
Building nanometer AJ-I type PSTM (STM) scans the pattern of this example fluorescent carbon quantum dot to use Shanghai to like, result is as shown in Figure 5, it can be seen that the particle diameter of this quantum dot is 1～5nm.
Fig. 6 is absorption spectrum curve and the fluorescent spectrum curve of the present embodiment gained fluorescent carbon quantum dot.Can be seen that figure, 275nm adnexa has a stronger intrinsic absorbed spectrum from absorption spectrum curve, near 375nm, have a small carbon quantum dot absworption peak；Tested fluorescent spectrum curve shows, under the irradiation of 375nm ultraviolet light, carbon quantum dot sends the visible blue light fluorescence of 410nm～470nm wavelength, and size reduces brings fluorescence spectrum blue shift, and the carbon quantum dot particle diameter scanned with STM in Fig. 5 is consistent.
Embodiment 3
The present embodiment, using the dimethylnaphthalene of solid-state as carbon source, prepares dimethylnaphthalene solution in ethanol, and wherein dimethylnaphthalene mass concentration is 5%, and ethanol is 95%, as carbon source solution.Specifically comprise the following steps that
(1) under room temperature, quartz test tube is clean with ultrasonic cleaning, add 4mL carbon source solution after drying through airtight, seal after being in vitro filled with argon shield；
(2) selecting the ultraviolet light that optical maser wavelength is 248nm of excimer laser, pulse power selection 195mJ, operating frequency selected 5Hz, with non-focusing mode irradiation 20 minutes；
(3) in gained quartz test tube, transparency liquid is the alcoholic solution of fluorescent carbon quantum dot；
Test result indicate that namely this carbon quantum dot shows good fluorescent effect without finishing, its absorption spectrum curve and fluorescent spectrum curve are as shown in Figure 7.From absorption spectrum curve it can be seen that figure 329nm adnexa have a stronger intrinsic absorbed spectrum, near 350nm-370nm, absworption peak is inconspicuous；Tested fluorescence spectrum shows, under the irradiation of 350nm-370nm ultraviolet light, carbon quantum dot sends light green color fluorescence, and two significant emission peaks near 450nm and 530nm illustrate that quantum dot size distribution uniformity is good.
Embodiment 4
The present embodiment, using the naphthalene of solid-state as carbon source, prepares naphthalene solution in ethanol, and wherein naphthalene mass concentration is 5%, and ethanol is 95%, as carbon source solution.Specifically comprise the following steps that
(1) under room temperature, quartz test tube is clean with ultrasonic cleaning, add 4mL carbon source solution after drying through airtight, seal after being in vitro filled with argon shield；
(2) selecting the ultraviolet light that optical maser wavelength is 248nm of excimer laser, pulse power selection 195mJ, operating frequency selected 10Hz, with non-focusing mode irradiation 10 minutes；
(3) in gained quartz test tube, light yellow liquid is the alcoholic solution of fluorescent carbon quantum dot；
Absorption spectrum curve and fluorescent spectrum curve are as shown in Figure 8.Test result indicate that there is a stronger intrinsic absorbed spectrum near 321nm, near 340nm-370nm, absworption peak is inconspicuous；Tested fluorescence spectrum shows, all there is the fluorescent characteristic of luminescence generated by light in 340nm-370nm scope, and launches wavelength at 380nm-420nm royal purple light, and fluorescent intensity is more weak.
Claims (3)
1. the method that fluorescent carbon quantum dot is prepared in a laser irradiation, it is characterized in that: with the one in benzene, substituted benzene or many benzene ring compounds for carbon source, the carbon source that is in a liquid state by wavelength irradiation under ultraviolet ray within 380nm or irradiate is dissolved in the carbon source solution that obtains in ethanol 1～120 minute by the carbon source in solid-state, obtains fluorescent carbon quantum dot；
Described substituted benzene is selected from toluene；Described many benzene ring compounds are selected from naphthalene, dimethylnaphthalene.
2. the method that fluorescent carbon quantum dot is prepared in laser irradiation according to claim 1, is characterized in that: described irradiation under ultraviolet ray is to be completed with the condition of pulse power 120mJ～400mJ and operating frequency 1～20Hz by rare gas list halogenide excimer laser.
3. the method that fluorescent carbon quantum dot is prepared in laser irradiation according to claim 1, it is characterized in that: concretely comprise the following steps: carbon source that 1～100mL is in a liquid state or be dissolved in the carbon source solution obtained in ethanol by the carbon source in solid-state and load in quartz container, in described quartz container, pass into argon protect, then quartz container is sealed, by rare gas list halogenide excimer laser through described quartz container with carbon source described in wavelength irradiation under ultraviolet ray within 380nm 1～120 minute, pulse power selection is 120mJ～400mJ, operating frequency is chosen as 1～20Hz, obtain fluorescent carbon quantum dot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410323271.0A CN104087296B (en) | 2014-07-08 | 2014-07-08 | The method of fluorescent carbon quantum dot is prepared in a kind of laser irradiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410323271.0A CN104087296B (en) | 2014-07-08 | 2014-07-08 | The method of fluorescent carbon quantum dot is prepared in a kind of laser irradiation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104087296A CN104087296A (en) | 2014-10-08 |
| CN104087296B true CN104087296B (en) | 2016-06-29 |
Family
ID=51635061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410323271.0A Active CN104087296B (en) | 2014-07-08 | 2014-07-08 | The method of fluorescent carbon quantum dot is prepared in a kind of laser irradiation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104087296B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104910904B (en) * | 2015-06-08 | 2016-08-31 | 大连理工大学 | A kind of with sulfonated coal for carbon source by the simple and quick method preparing fluorescent carbon quantum dot of ozone oxidation photo-reduction technology |
| CN106978168B (en) * | 2017-03-31 | 2019-05-28 | 广州珂纳偲生物技术有限公司 | A kind of preparation method of carbon dots and its array |
| CN108085711B (en) * | 2017-12-21 | 2019-07-16 | 西安科技大学 | A kind of preparation method of the carbon quantum dot to glow |
| CN108219785B (en) * | 2018-04-12 | 2021-02-23 | 东北林业大学 | High-fluorescence-intensity silicon-doped carbon quantum dot and photochemical synthesis method and application thereof |
| CN108878661B (en) * | 2018-06-29 | 2019-12-13 | 西北工业大学 | Preparation method of carbon quantum dot modified perovskite solar cell |
| CN109536162B (en) * | 2018-12-12 | 2020-05-22 | 深圳先进技术研究院 | Preparation method of simple carbon dots |
| CN111470493A (en) * | 2019-10-15 | 2020-07-31 | 中山大学 | Preparation method and application of graphene quantum dots |
| CN112103087B (en) * | 2020-09-17 | 2021-10-15 | 西北大学 | Method for preparing carbon quantum dot modified multistage tungsten trioxide-foamed nickel composite material and application thereof |
| CN113004893B (en) * | 2021-02-05 | 2023-07-04 | 华南师范大学 | Preparation method and patterning application of carbon quantum dots |
| CN113025314B (en) * | 2021-03-18 | 2022-11-08 | 中国科学院合肥物质科学研究院 | Simple method for rapidly preparing sulfur quantum dots |
| CN113620273B (en) * | 2021-08-13 | 2023-04-25 | 苏州大学 | Carbon-based metal-free functional quantum dot and preparation and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012021620A1 (en) * | 2010-08-10 | 2012-02-16 | Board Of Regents, The University Of Texas System | Processes for synthesizing fluorescent carbon nanoparticles and compositions and uses thereof |
-
2014
- 2014-07-08 CN CN201410323271.0A patent/CN104087296B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012021620A1 (en) * | 2010-08-10 | 2012-02-16 | Board Of Regents, The University Of Texas System | Processes for synthesizing fluorescent carbon nanoparticles and compositions and uses thereof |
Non-Patent Citations (5)
| Title |
|---|
| Fluorescent Carbon Dots Capped with PEG200 and Mercaptosuccinic Acid;Helena Gonçalves等;《J Fluoresc》;20100330;第20卷;1023-1028 * |
| Luminescent graphene quantum dots fabricated by pulsed laser synthesis;Khaled Habiba等;《CARBON》;20130731;第64卷;341-350 * |
| One-step synthesis of fluorescent carbon nanoparticles by laser irradiation;Sheng-Liang Hu 等;《J. Mater. Chem.》;20081209;第19卷;484-488 * |
| Preparation of carbon quantum dots with tunable photoluminescence by rapid laser passivation in ordinary organic solvents;Xiangyou Li 等;《Chem. Commun.》;20101115;第47卷;932-934 * |
| Quantum-Sized Carbon Dots for Bright and Colorful Photoluminescence;Ya-Ping Sun 等;《J. AM. CHEM. SOC.》;20060523;第128卷;7756-7757 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104087296A (en) | 2014-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104087296B (en) | The method of fluorescent carbon quantum dot is prepared in a kind of laser irradiation | |
| Huang et al. | Composition‐graded cesium lead halide perovskite nanowires with tunable dual‐color lasing performance | |
| Li et al. | Highly compact CsPbBr3 perovskite thin films decorated by ZnO nanoparticles for enhanced random lasing | |
| Chen et al. | Tunable photoluminescence of CsPbBr3 perovskite quantum dots for their physical research | |
| Chen et al. | Photon upconversion in core–shell nanoparticles | |
| Nguyen et al. | Electron–hole recombination dynamics in carbon nanodots | |
| Yuan et al. | Ultrastable and low‐threshold random lasing from narrow‐bandwidth‐emission triangular carbon quantum dots | |
| Qiu et al. | Microcavity lasing behavior of oriented hexagonal ZnO nanowhiskers grown by hydrothermal oxidation | |
| Nguyen et al. | Direct demonstration of photoluminescence originated from surface functional groups in carbon nanodots | |
| Tu et al. | Excitation energy migration dynamics in upconversion nanomaterials | |
| Wang et al. | Ultra‐bright and stable pure blue light‐emitting diode from O, N Co‐doped carbon dots | |
| Yang et al. | Origin of blue emission from silicon nanoparticles: direct transition and interface recombination | |
| Murakami et al. | Nonlinear photoluminescence excitation spectroscopy of carbon nanotubes: exploring the upper density limit of one-dimensional excitons | |
| Tan et al. | Surface passivated silicon nanocrystals with stable luminescence synthesized by femtosecond laser ablation in solution | |
| Yogesh et al. | Photoluminescence properties of carbon nanoparticles synthesized from activated carbon powder (4% ash) by laser ablation in solution | |
| Nguyen et al. | Microwave-assisted synthesis of graphene quantum dots and nitrogen-doped graphene quantum dots: Raman characterization and their optical properties | |
| CN1571941A (en) | Optical element, and manufacturing method thereof | |
| Sun et al. | Broadband Ce (III)-Sensitized Quantum Cutting in Core–Shell Nanoparticles: Mechanistic Investigation and Photovoltaic Application | |
| Sayed et al. | Solid state white light emitting systems based on CeF3: RE3+ nanoparticles and their composites with polymers | |
| Wang et al. | Plasmon enhancement for Vernier coupled single-mode lasing from ZnO/Pt hybrid microcavities | |
| Wang et al. | Environmental-friendly lead-free chiral Mn-based metal halides with efficient circularly polarized photoluminescence at room temperature | |
| Deng et al. | Light‐controlled near‐field energy transfer in plasmonic metasurface coupled MoS2 monolayer | |
| Nevar et al. | Carbon nanodots with tunable luminescence properties synthesized by electrical discharge in octane | |
| Wang et al. | Solid‐State Carbon Dots with Efficient Cyan Emission towards White Light‐Emitting Diodes | |
| El Jouad et al. | Roughness effect on photoluminescence of cerium doped zinc oxide thin films |
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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240415 Address after: No. 193, Tunxi Road, Hefei City, Anhui Province, 230011 Patentee after: HeFei University of Technology Asset Management Co.,Ltd. Country or region after: China Address before: Tunxi road in Baohe District of Hefei city of Anhui Province, No. 193 230009 Patentee before: Hefei University of Technology Country or region before: China |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240428 Address after: Room 604, Building A, Future Center, University of Science and Technology Research Institute, No. 5089 Wangjiang West Road, High tech Zone, Hefei City, Anhui Province, 230088 Patentee after: Hefei Zhaoyangneng Technology Co.,Ltd. Country or region after: China Address before: No. 193, Tunxi Road, Hefei City, Anhui Province, 230011 Patentee before: HeFei University of Technology Asset Management Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |