CN103132143A - Gold nanorod and preparing method thereof - Google Patents
Gold nanorod and preparing method thereof Download PDFInfo
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- CN103132143A CN103132143A CN2011103919391A CN201110391939A CN103132143A CN 103132143 A CN103132143 A CN 103132143A CN 2011103919391 A CN2011103919391 A CN 2011103919391A CN 201110391939 A CN201110391939 A CN 201110391939A CN 103132143 A CN103132143 A CN 103132143A
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Abstract
The invention provides a preparing method of a gold nanorod. The preparing method of the gold nanorod is characterized in that a growth solution of the gold nanorod further contains soluble copper salt, and the added quantity, relative to each mole of gold seed crystal, of the soluble copper salt is 16-400 moles. The length-diameter ratio of the gold nanorod obtained through the method is in a range of 2.3 +/- 0.3 to 3.7 +/- 0.4, the value of full wave at half maximum (FWHM) of an absorption peak of a longitudinal surface plasmon resonance is 0.20-0.22eV, and the ratio of absorbance of absorption peak positions of the longitudinal surface plasmon resonance and a transverse surface plasmon resonance (ALSPR/ATSPR) is 2.3 to 4.9. According to the preparing method of the gold nanorod, cupric ions are used for the first time to catalyze forming of the gold nanorod of high quality. The preparing method of the gold nanorod is simple in operating step, monodispersity of the size of the obtained gold nanorod is good, and performance of the gold nanorod is obviously improved. In addition, the preparing method of the gold nanorod is high in repeatability and moderate in reaction condition, and a used reagent is cheap and nontoxic.
Description
Technical field
The present invention relates to a kind of preparation method of gold nanorods and the gold nanorods that is prepared by the method.
Background technology
At present, the method of the standby gold nanorods of wet chemical mainly contains three kinds, wherein, the most widely used is the growth method (Seed-mediated Growth) of the seed modulation that proposes of the people such as Murphy, namely by regulating correlated response parameter such as reactant concn, seed concentration, kinds of surfactants etc. to obtain the gold nanorods of different-shape and size.Now generally adopt Ag
+Auxiliary seed mediated growth method synthesizes the gold nanorods of different length-to-diameter ratios.Ag
+Add the productive rate that can significantly improve gold nanorods and realize that the length-to-diameter ratio of gold nanorods regulates and controls within the specific limits.The people such as Zhu (Jing Zhu, Ken-Tye Yong, Indrajit Roy, Rui Hu, Hong Ding, Lingling Zhao, Mark T Swihart, Guang S He, Yiping Cuiand Paras N Prasad, " Additive controlled synthesis of gold nanorods (GNRs) fortwo-photon luminescence imaging of cancer cells. " Nanotechnology, 2010,21:285106-285113) propose also can regulate and control the size and shape of gold nanorods by the concentration of regulating HCl.
In addition, xitix (AA) and Au commonly used
3+Ratio have two kinds.The people such as the one, Liu (Mingzhao Liu and Philippe Guyot-Sionnest, " Mechanism of silver (I)-assistedgrowth of gold nanorods and bipyramids. " Journal of Physical Chemistry B, 2005,109 (47): 22192-22200.) propose [AA]/[Au
3+]=1.6, [seed]/[Au
3+]=0.0012, and separately add appropriate amount of acid to reduce growth velocity, Au in the method in the growth solution of gold nanorods
3+Reduction fully, Au
3+Utilization ratio is higher.Another kind is the people such as Alkilany (Alaaldin M.Alkilany, Pratik K.Nagaria, Cole R.Hexel, Timothy J.Shaw, Catherine J.Murphy, and Michael D.Wyatt, " Cellular Uptake and Cytotoxicity of Gold Nanorods:Molecular Origin ofCytotoxicity and Surface Effects. " Small, 2009,5:701-708.) [AA]/[Au is proposed
3+]=1.1, [seed]/[Au
3+Other acid is not added in]=0.0006, in the method, only has 1/5 Au
3+Be reduced Au
3+Utilization ratio is lower.These two kinds of methods are all mainly by regulating Ag
+The concentration length-to-diameter ratio of regulating gold nanorods, the size monodispersity of the gold nanorods that obtains is good not.
2009, the people such as Khanal (Bishnu P. Khanal and Eugene R.Zubarev, " Polymer-functionalized platinum-on-gold bimetallic nanorods. " Angew.Chem.Int.Ed, 2009,48:6888-6891.) method that multistep is added the synthetic gold nanorods of AA proposed, this method has significantly been improved the size monodispersity of gold nanorods, has also improved golden utilization ratio simultaneously.But add the increase of number of times with AA, long wave surface plasmon resonance (longitudinal surfaceplasmon resonance, LSPR) the absorption peak peak position changes and (can reach approximately 180nm) greatly, the bad control of length-to-diameter ratio, and repeatedly add AA and make preparation process show slightly loaded down with trivial details.At present, this method is used less.
Summary of the invention
The objective of the invention is to overcome complex operation and the bad shortcoming of gold nanorods size monodispersity that makes in prior art, a kind of gold nanorods and preparation method thereof is provided.
The improvement of gold nanorods quality realizes by reducing its speed of growth usually, as the above-mentioned a small amount of acid of interpolation in growth solution, further reduces the reducing power of xitix, repeatedly adds on a small quantity reductive agent etc.The present inventor finds, add a certain amount of Cu in the gold nanorods growth solution
2+Significantly accelerated the growth kinetics of gold nanorods.Cu
2+The catalyzer of gold nanorods growth, but the growth time of gold nanorods obviously shortened, although Cu
2+Add and accelerated speed of response, and the quality of the gold nanorods that obtains does not have corresponding reduction, but also significantly improved the distribution of sizes of gold nanorods, record peak width at half height (the full wave at half maximum of long wave surface plasmon resonance absorption peak, FWHM) be worth I and reach 0.20eV, gold nanorods LSPR peak position also is subjected to Cu
2+Concentration as influencing factor, high density Cu
2+Make LSPR absorption peak blue shift (the nanometer rod blue shift that length-to-diameter ratio is large is more).So, use Cu
2+Regulate the growth kinetics of gold nanorods, can further improve the quality of gold nanorods.
The present inventor also finds, different Ag
+Under concentration conditions (when being different length-to-diameter ratio), obtain the required Cu of top-quality gold nanorods
2+Concentration different, such as Ag
+When concentration is 40 μ M, make the Cu of top-quality gold nanorods
2+Concentration is 160 μ M, Ag
+When concentration is 70 μ M, make the Cu of top-quality gold nanorods
2+Concentration is 100 μ M.
Thus, the invention provides a kind of preparation method of gold nanorods, the method comprises mixes gold nanorods growth solution and Jin Jing's kind, be placed under the condition that Jin Jing plants growth so that described Jin Jing plants growth mixing the gained mixture, described gold nanorods growth solution contains tensio-active agent, reductive agent, tetra chlorauric acid and soluble silver salt, it is characterized in that, described gold nanorods growth solution also contains soluble copper salt, Jin Jing's kind with respect to every mole, the add-on of soluble copper salt are 16-400mol.
The present invention also provides a kind of gold nanorods that is made by aforesaid method, the length-to-diameter ratio of described gold nanorods is in 2.3 ± 0.3 to 3.7 ± 0.4 scopes, peak width at half height (FWHM) value of long wave surface plasmon resonance absorption peak is 0.20-0.22eV, and the long wave surface plasmon resonance absorbs the ratio (A of peak position and shortwave surface plasmon resonance absorption peak position absorption value
LSPR/ A
TSPR) be 2.3-4.9.
By technique scheme, the present invention utilizes the formation of cupric ion catalysis high quality gold nanorods first, and the method operation steps is simple, and the gold nanorods size monodispersity that makes is good, has significantly optimized the performance of gold nanorods.And method repeatability of the present invention is high, reaction conditions is gentle, the agents useful for same non-toxic inexpensive.
Other features and advantages of the present invention will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide a further understanding of the present invention, and consists of the part of specification sheets, is used from explanation the present invention with following embodiment one, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the ultraviolet-visible-near-infrared absorption spectrum figure of gold nanorods solution, wherein a-d is respectively the ultraviolet-visible of the gold nanorods solution that embodiment of the present invention 1-4 makes-near-infrared absorption spectrum figure, and a '-d ' is respectively the ultraviolet-visible of the gold nanorods solution that Comparative Examples 1-4 makes-near-infrared absorption spectrum figure;
Fig. 2 is the gold nanorods transmission electron microscope shape appearance figure that embodiment of the present invention 1-4 makes, and wherein A-D is respectively the gold nanorods transmission electron microscope shape appearance figure that embodiment of the present invention 1-4 makes.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, embodiment described herein only is used for description and interpretation the present invention, is not limited to the present invention.
The preparation method of gold nanorods provided by the invention comprises mixing gold nanorods growth solution and Jin Jing's kind, be placed under the condition that Jin Jing plants growth so that described Jin Jing plants growth mixing the gained mixture, described gold nanorods growth solution contains tensio-active agent, reductive agent, tetra chlorauric acid and soluble silver salt, it is characterized in that, described gold nanorods growth solution also contains soluble copper salt, Jin Jing's kind with respect to every mole, the add-on of soluble copper salt is 16-400mol, is preferably 50-267mol.
The present inventor finds, when the soluble copper salt that adds is in above-mentioned preferred scope, can significantly improving the quality of gold nanorods in fast reaction speed, thereby further improve the size monodispersity of gold nanorods.
Wherein, under growth temperature, the solubleness in water can realize purpose of the present invention greater than 25g/100g water as long as described soluble copper salt is planted Jin Jing, and preferably, described soluble copper salt is one or more in cupric chloride, copper sulfate and cupric nitrate.
according to the present invention, described Jin Jing plants and can contact with described gold nanorods growth solution with the form that Jin Jing plants solution, described Jin Jing plants solution and can obtain according to method well-known to those skilled in the art, for example by add the tetra chlorauric acid aqueous solution in the cetyl trimethylammonium bromide aqueous solution, then add sodium borohydride and/or the POTASSIUM BOROHYDRIDE aqueous solution under the condition that stirs, continue to stir 3-5min, standing 2-5h makes, wherein, cetyl trimethylammonium bromide, the mol ratio of sodium borohydride and/or POTASSIUM BOROHYDRIDE and tetra chlorauric acid is 295-305: 2.2-2.5: 1.
According to the present invention, in described gold nanorods growth solution, the add-on of each component can be selected in relative broad range, under preferable case, Jin Jing's kind with respect to every mole, the add-on of described tensio-active agent, reductive agent, tetra chlorauric acid and soluble silver salt can be 125000-208334mol, 920-1334mol, 831-835mol and 33-250mol.
Described tensio-active agent, reductive agent and soluble silver salt can be selected this area common agents, and under preferable case, described tensio-active agent is cetyl trimethylammonium bromide.Described reductive agent is sodium borohydride and/or POTASSIUM BOROHYDRIDE.Described soluble silver salt is Silver Nitrate.
In the present invention, described Jin Jing plants the concentration that in growth solution, Jin Jing plants and is preferably 0.2-0.3mM.
According to the present invention, in described mixture, the concentration of described soluble silver salt is 30-50 μ M, and the concentration of described soluble copper salt is 150-200 μ M; Perhaps the concentration of described soluble silver salt is 60-100 μ M, and the concentration of described soluble copper salt is 50-120 μ M.The present inventor finds, when the concentration of soluble silver salt and soluble copper salt in described mixture satisfies above-mentioned relation, has further improved the quality of gold nanorods.
The present inventor finds, by adding acid can realize that Jin Jing plants the adjusting of growth velocity when adding soluble copper salt in described gold nanorods growth solution, the size monodispersity of gold nanorods further improves, therefore preferably, also contain acid in described gold nanorods growth solution.Described acid can be sulfuric acid and/or hydrochloric acid, the Jin Jing's kind with respect to every mole, and with pH meter, the add-on of described acid is 8332-58334mol.
The compound method of described gold nanorods growth solution can be this area method commonly used, preferably, the method for described gold nanorods growth solution preparation comprises successively add tetra chlorauric acid, soluble silver salt, soluble copper salt, acid and reductive agent in surfactant soln.
According to the present invention, described gold nanorods growth solution to be planted to contact with described Jin Jing can realize purpose of the present invention, under preferable case, the condition that makes described Jin Jing plant growth comprises that temperature is 25-35 ℃, the time is 12-16h.
The ratio that the inventive method prepares gold nanorods can reach 92-96%.
The present invention also provides a kind of gold nanorods that is prepared by aforesaid method, and the length-to-diameter ratio of described gold nanorods is in 2.3 ± 0.3 to 3.7 ± 0.4 scope, and the FWHM value is 0.20-0.22eV, A
LSPR/ A
TSPRValue is 2.3-4.9.
Below will describe the present invention by embodiment.In following examples, agents useful for same is as follows: cetyl trimethylammonium bromide (Amresco), sodium borohydride (Alfa Aesar), tetra chlorauric acid (Chemical Reagent Co., Ltd., Sinopharm Group), xitix (Research chemicals Ltd); LSPR peak position and A
LSPR/ A
TSPRObtained by ultraviolet-visible-near-infrared absorption spectrum figure, calculate corresponding Energy value according to ultraviolet-visible-near-infrared absorption spectrum figure and formula " E (energy)=h (quantum of action) v (light frequency)=hc (light velocity)/λ (light wavelength) ", the peak width at half height at the peak that obtains is the FWHM value, ultraviolet-visible-near-infrared absorption spectrum is recorded 25-35 ℃ the time by ultraviolet spectrophotometer (Varian Cary 50, the U.S.); The length-to-diameter ratio of gold nanorods is by transmission electron microscope (Tecnai G
220S-TWIN, U.S.) characterize and record, the statistics number is 900; The calculating of length-to-diameter ratio theoretical value (R) is with reference to formula λ
max=(53.71R-42.29) ε
m+ 495.14, wherein, λ
maxBe LSPR peak position (nm), ε
mFor the specific inductivity of gold nanorods surrounding medium, get 1.77; 1000 gold nano grains of random statistics arbitrarily (comprise bar-shaped with non-bar-shaped), wherein the quantity of bar-shaped gold nano grain is ratio with the total ratio between gold nano grain quantity.
in following examples, Jin Jing plants and prepares by the following method: getting 7.5mL concentration is the 0.1M cetyl trimethylammonium bromide aqueous solution, adding wherein 55.1 μ L concentration is the tetra chlorauric acid aqueous solution of 45.4mM, after mixing, volume dilution is arrived 9.4mL, adding 0.6mL concentration under the condition of magnetic agitation is the sodium borohydride aqueous solution (prepare before use temporarily and be placed in frozen water and preserve) of 0.01M, make mixing solutions (cetyl trimethylammonium bromide, the mol ratio of sodium borohydride and tetra chlorauric acid is 300: 2.4: 1), standing 2-5h after stirring 3min, obtain containing the Jin Jing that Jin Jing plants and plant solution, the concentration that Jin Jing plants GOLD FROM PLATING SOLUTION is 0.25mM.
Embodiment 1
getting 100mL concentration is the cetyl trimethylammonium bromide aqueous solution of 0.1M, adding wherein 1.1mL concentration is the tetra chlorauric acid aqueous solution of 45.4mM, 0.4mL concentration is the silver nitrate aqueous solution of 10mM, 1.6mL concentration is the copper chloride solution of 10mM, 2mL concentration is the aqueous sulfuric acid of 0.5M, after mixing, adding 800 μ L concentration is the aqueous ascorbic acid of 0.1M again, the mixing solutions that obtains becomes colorless, then add 240 μ L to plant solution by the Jin Jing that above-mentioned steps prepares, mix rear 30 ℃ of waters bath with thermostatic control 12 hours, obtain gold nanorods solution.The ultraviolet-visible of mensuration gold nanorods solution-near-infrared absorption spectrum characteristic parameter, measurement result is as shown in a and table 1 of Fig. 1; Observe the images of transmissive electron microscope of gold nanorods, as shown in the A in Fig. 2.
Embodiment 2-4
Method according to embodiment 1 prepares gold nanorods solution, different is that " 0.4mL concentration is that silver nitrate aqueous solution and the 1.6mL concentration of 10mM is the copper chloride solution of 10mM " replaced by " 0.7mL concentration is the silver nitrate aqueous solution of 10mM; 1mL concentration is the copper chloride solution of 10mM ", " 1mL concentration is the silver nitrate aqueous solution of 10mM; 0.6mL concentration is the copper chloride solution of 10mM " and " 1.5mL concentration is the silver nitrate aqueous solution of 10mM, and 0.3mL concentration is the copper chloride solution of 10mM " respectively.The ultraviolet-visible of mensuration gold nanorods solution-near-infrared absorption spectrum characteristic parameter measurement result is as shown in b-d and table 1 in Fig. 1; Observe the images of transmissive electron microscope of gold nanorods, as shown in the B-D in Fig. 2.
Comparative Examples 1-4
Method according to embodiment 1-4 prepares gold nanorods solution respectively, and different is not add soluble copper salt in the cetyl trimethylammonium bromide aqueous solution.The ultraviolet-visible of mensuration gold nanorods solution-near-infrared absorption spectrum characteristic parameter measurement result is as shown in a ' in Fig. 1-d ' and table 1; Observe the images of transmissive electron microscope of gold nanorods.
Table 1
Embodiment 5-11
Method according to embodiment 2 prepares gold nanorods solution, but the amount of the xitix that adds is different, the addition of xitix and correlation parameter measurement result are as shown in table 2, in table 2, "--" represents that the ultraviolet-visible-near-infrared absorption spectrum of the gold nanorods solution that this embodiment makes only has unimodal, calculate this parameter value meaningless, therefore omit.
Comparative Examples 5-11
Method according to Comparative Examples 2 prepares gold nanorods solution, but the amount of the xitix that adds is different, and the addition of xitix and correlation parameter measurement result are as shown in table 2.
Table 2
Embodiment 12-19
Method according to embodiment 3 prepares gold nanorods solution, but the amount of the sulfuric acid that adds is different, and the addition of sulfuric acid and correlation parameter measurement result are as shown in table 3.
Comparative Examples 12-19
Method according to Comparative Examples 3 prepares gold nanorods solution, but the amount of the sulfuric acid that adds is different, the addition of sulfuric acid and correlation parameter measurement result are as shown in table 3, in table 3, "--" expression does not form gold nanorods, ultraviolet-visible-near-infrared absorption spectrum figure is a curve that there is no obvious peak shape, therefore do not do further statistics.
Table 3
Can find out from above-described embodiment and Comparative Examples, the LSPR peak position of the gold nanorods that the present invention prepares is adjustable between 645-800nm, length-to-diameter ratio in 2.3 ± 0.3 to 3.7 ± 0.4 scopes, the FWHM value in the 0.20-0.22eV scope, A
LSPR/ A
TSPRValue is greater than 2.3, and the gold nanorods size monodispersity that obtains is good and quality is high.
Can be found out by embodiment 5-11 and Comparative Examples 5-11, no matter Cu
2+Whether exist, present the trend of blue shift after first red shift with the increase LSPR peak position of the amount of adding AA, high density AA causes the particle of spheroidal particle and other shapes significantly to increase.When not adding cupric chloride, the FWHM value of the gold nanorods that makes under the AA of high density is minimum; When adding cupric chloride, the quality of gold nanorods all is improved in varying degrees, and when hanging down AA concentration, the FWHM value can reach 0.19eV, improves more obvious.
Can be found out by embodiment 12-19 and Comparative Examples 12-19, when not adding cupric chloride, the FWHM value that makes gold nanorods that adds of acid increases; When adding cupric chloride, with the increase of the amount of the acid of adding, the LSPR peak position presents blue shift trend, and the FWHM value first reduces rear increase, when acid concentration is higher, can't form gold nanorods.But at specific Cu
2+Under the condition of concentration and acid concentration, can obtain high-quality gold nanorods.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned embodiment; in technical conceive scope of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove in addition, each concrete technical characterictic described in above-mentioned embodiment in reconcilable situation, can make up by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, also can carry out arbitrary combination between various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. the preparation method of a gold nanorods, the method comprises the gold nanorods growth solution is planted with Jin Jing and mixes, be placed under the condition that Jin Jing plants growth so that described Jin Jing plants growth mixing the gained mixture, described gold nanorods growth solution contains tensio-active agent, reductive agent, tetra chlorauric acid and soluble silver salt, it is characterized in that, described gold nanorods growth solution also contains soluble copper salt, and the Jin Jing's kind with respect to every mole, the add-on of soluble copper salt are 16-400mol.
2. method according to claim 1, wherein, the Jin Jing's kind with respect to every mole, the add-on of soluble copper salt are 50-267mol.
3. method according to claim 1 and 2, wherein, described soluble copper salt is one or more in cupric chloride, copper sulfate and cupric nitrate.
4. method according to claim 1, wherein, Jin Jing's kind with respect to every mole, the add-on of described tensio-active agent, reductive agent, tetra chlorauric acid and soluble silver salt is respectively 125000-208334mol, 920-1334mol, 831-835mol and 33-250mol.
5. according to claim 1 or 4 described methods, wherein, described tensio-active agent is cetyl trimethylammonium bromide, and described reductive agent is sodium borohydride and/or POTASSIUM BOROHYDRIDE, and described soluble silver salt is Silver Nitrate.
6. method according to claim 1, wherein, the concentration that in described mixture, Jin Jing plants is 0.2-0.3mM.
7. the described method of any one according to claim 1-6, wherein, in described mixture, the concentration of described soluble silver salt is 30-50 μ M, the concentration of described soluble copper salt is 150-200 μ M; Perhaps the concentration of described soluble silver salt is 60-100 μ M, and the concentration of described soluble copper salt is 50-120 μ M.
8. method according to claim 1, wherein, also contain acid in described gold nanorods growth solution, and described acid is sulfuric acid and/or hydrochloric acid, the Jin Jing's kind with respect to every mole, and with pH meter, the add-on of described acid is 8332-58334mol.
9. method according to claim 1, wherein, the condition that makes described Jin Jing plant growth comprises that temperature is 25-35 ℃, the time is 12-16h.
10. gold nanorods, it is characterized in that, described gold nanorods is prepared by the described method of any one in claim 1-9, the length-to-diameter ratio of described gold nanorods is in 2.3 ± 0.3 to 3.7 ± 0.4 scopes, the peak width at half height value of long wave surface plasmon resonance absorption peak is 0.20-0.22eV, and the ratio that the long wave surface plasmon resonance absorbs peak position and shortwave surface plasmon resonance absorption peak position absorption value is 2.3-4.9.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487378A (en) * | 2013-10-09 | 2014-01-01 | 国家纳米科学中心 | Gold nanorod aggregation based circular dichroism spectrum method for DNA detection |
| CN103962545A (en) * | 2013-01-30 | 2014-08-06 | 国家纳米科学中心 | Method for processing nanorods |
| CN105618730A (en) * | 2014-10-28 | 2016-06-01 | 深圳先进技术研究院 | Small-size gold nanorod and preparation method and applications thereof |
| CN106770049A (en) * | 2016-12-22 | 2017-05-31 | 南京邮电大学 | Based on the method that DNA paper foldings template and nanometer gold bar build Dolmen structures |
| CN107252896A (en) * | 2017-06-15 | 2017-10-17 | 山东大学 | A kind of synthetic method of single dispersing thorn-like gold nano grain |
| US10758983B1 (en) | 2018-04-17 | 2020-09-01 | Government Of The United States, As Represented By The Secretary Of The Air Force | Concentrated synthesis of monodispersed gold nanorods |
| CN111659903A (en) * | 2020-07-14 | 2020-09-15 | 国家纳米科学中心 | Gold nanorod and preparation method thereof |
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| CN101199999A (en) * | 2007-12-17 | 2008-06-18 | 天津理工大学 | Gold nanorods long wave ultraviolet light irradiation growth method |
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| CN101199999A (en) * | 2007-12-17 | 2008-06-18 | 天津理工大学 | Gold nanorods long wave ultraviolet light irradiation growth method |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962545A (en) * | 2013-01-30 | 2014-08-06 | 国家纳米科学中心 | Method for processing nanorods |
| CN103487378A (en) * | 2013-10-09 | 2014-01-01 | 国家纳米科学中心 | Gold nanorod aggregation based circular dichroism spectrum method for DNA detection |
| CN103487378B (en) * | 2013-10-09 | 2016-06-15 | 国家纳米科学中心 | A kind of circular dichroism based on gold nanorod aggregation detects the method for DNA |
| CN105618730A (en) * | 2014-10-28 | 2016-06-01 | 深圳先进技术研究院 | Small-size gold nanorod and preparation method and applications thereof |
| CN106770049A (en) * | 2016-12-22 | 2017-05-31 | 南京邮电大学 | Based on the method that DNA paper foldings template and nanometer gold bar build Dolmen structures |
| CN106770049B (en) * | 2016-12-22 | 2020-04-14 | 南京邮电大学 | Method for constructing Dolmen structure based on DNA paper folding template and nano gold rod |
| CN107252896A (en) * | 2017-06-15 | 2017-10-17 | 山东大学 | A kind of synthetic method of single dispersing thorn-like gold nano grain |
| CN107252896B (en) * | 2017-06-15 | 2018-12-04 | 山东大学 | A kind of synthetic method of monodisperse thorn-like gold nano grain |
| US10758983B1 (en) | 2018-04-17 | 2020-09-01 | Government Of The United States, As Represented By The Secretary Of The Air Force | Concentrated synthesis of monodispersed gold nanorods |
| CN111659903A (en) * | 2020-07-14 | 2020-09-15 | 国家纳米科学中心 | Gold nanorod and preparation method thereof |
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