CN102367166A - Method for preparing organic single crystal particle two-dimensional ordered structure and its patterned arrangement - Google Patents
Method for preparing organic single crystal particle two-dimensional ordered structure and its patterned arrangement Download PDFInfo
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- CN102367166A CN102367166A CN2011103444180A CN201110344418A CN102367166A CN 102367166 A CN102367166 A CN 102367166A CN 2011103444180 A CN2011103444180 A CN 2011103444180A CN 201110344418 A CN201110344418 A CN 201110344418A CN 102367166 A CN102367166 A CN 102367166A
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Abstract
The invention discloses a method for preparing an organic single crystal particle two-dimensional ordered structure and its patterned arrangement. The method comprises the steps of: 1) dispersing organic single crystal particles in a dispersant, conducting ultrasonic treatment for 5min so as to form a monodisperse system; 2) injecting the monodisperse system into a parallel plate capacitor composed of two pieces of parallelly disposed conductive glass; 3) connecting the two ends of the parallel plate capacitor to a current field, several minutes later, thus forming an organic single crystal particle two-dimensional ordered structure on the surface of the bottom conductive glass by the organic single crystal particle under the effect of an electrofluid. Finally, by means of a photoetching method, photoresist with certain patterns is formed on the surface of the bottom conductive glass so as to realize patterned arrangement of the two-dimensional ordered structure. The method of the invention has the advantages of simplicity and effectiveness, low cost, reversible structure, strong repeatability, good controllability and strong universality.
Description
Technical field
The present invention relates to the controlled self assembly and the patterning process thereof of the two-dimension single layer structure of organic single-crystal material; More specifically, the present invention relates to zero dimension organic polyhedra micro-nano crystal is assembled into through extra electric field the method for patterned arrangement on two-dimension single layer structure and the various two-dimentional yardstick.
Background technology
In recent years, flourish along with package technique, increasing orderly assembly structure receives people's very big concern because its particular performances is widely used in devices field.V. Bulovic group dresses up the single thin film structure through the method that material is separated with CdSe quantum dot (QD) groups of grains; Be clipped in the two-layer organic layer; The luminous efficiency of the quantum dot light emitting diode (QD-LED) that obtains has improved 25 times (Nature 420 (2002), 800).Alivisatos group utilizes the method for spin coating layer by layer successively CdTe and CdSe groups of grains to be loaded on up and down between the two-layer transparency electrode; Form the stereochemical structure of three-dimensional order; Obtain the solar cell of the giving of a kind of full-inorganic-acceptor; Efficient is near 3%, and the life-span reaches 13000 hours (Science 310 (2005), 462).These examples have proved absolutely that regular orderly structure has important effect for the raising of device performance.In addition, Vikram C. Sundar reported first in 2004 construct field-effect transistor (Science 303 (2004), 1644) with organic single-crystal as main material, from then on drawn back the prelude of organic single-crystal material in the device application field.Traditional relatively organic film device; Organic single-crystal device defective on crystal constitutes is few; Molecule has the order of long-range, has reduced the obstruction of carrier in the transport of materials process, thereby has improved carrier mobility and on-off ratio greatly; Reduce threshold voltage, obviously improved device performance.
If can method realization its ordered structure and the patterning preparation thereof of organic single-crystal material through assembling will be brought new opportunity to the development of the integrated organic single-crystal device of large tracts of land undoubtedly.As a rule, solving thinking generally has two kinds, and a kind of is the growth course of directly controlling crystal, and through controlling its nucleation site, the direction of growth and maturing process etc. directly grows orderly structure.2006, the method for substrate was modified in the utilization of Zhennan Bao seminar, has successfully realized organic single-crystal selectivity nucleation and growth, has obtained the mono-crystalline structures (Nature 444 (2006), 913) of large-area orderly arrangement.This method has promoted the organic single-crystal device to a certain extent from the possibility of laboratory research stage to the practical application development, yet also has certain limitation.There is certain difference in different organic crystals on the method for preparation, scientists all is to prepare crystalline material earlier in the great majority experiment, and these crystalline materials often all are random alignment.Thereby, make it form large-area ordered structure through certain method again these existing monocrystal materials, will important meaning be arranged to the practical application that realizes the organic single-crystal device undoubtedly.The present invention will pay close attention to other a kind of thinking, and with the means of the organic single-crystal material that has prepared through extra electric field, assembling forms orderly assembly and patterned arrangement optionally.
Summary of the invention
The object of the present invention is to provide a kind of method for preparing organic single-crystal particle two dimensional structure, this method is simply effective, and is with low cost, and structure is reversible, and repeatability is strong, and controllability is good, and universality is strong.
Another object of the present invention is to provide a kind of method of patterned arrangement of organic single-crystal particle two dimensional structure.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention realizes through following technical scheme:
A kind of method for preparing organic single-crystal particle two dimensional structure, it may further comprise the steps:
Step 1) is scattered in the organic single-crystal particle in the dispersant, ultrasonic 3-5 minute, makes it to form monodisperse system;
Step 2) said monodisperse system is injected plane-parallel capacitor, said plane-parallel capacitor is made up of the electro-conductive glass of two parallel placements;
Step 3) connects current field at said plane-parallel capacitor two ends, and said organic single-crystal particle causes at electricity under the effect of fluid on the surface of the electro-conductive glass of bottom and forms organic single crystal grain two dimensional structure after a few minutes.
Further, prepare the method for organic single-crystal particle two dimensional structure, also comprise step 4: on plane-parallel capacitor, feed one direct current, make said two dimensional structure be fixed on the surface of electro-conductive glass of bottom.
Further, the scope of the diameter of said organic single-crystal particle is 500nm-5um.
Preferably, the pattern of said organic single-crystal particle comprises cube, by the cube of seamed edge etching or quadrature dodecahedron.
Preferably, said organic single-crystal particle is 2,5,8,11-four uncle Ding Ji perylenes.
Further, said dispersant is a deionized water.
Further, the distance of the electro-conductive glass of described two parallel placements is about 80-100 μ m.
Further, said current field is an AC field.
Preferably, the scope of the electric-field intensity of said AC field is 1 * 10
4-10 * 10
4V/m, frequency range is 100-1000Hz or 20000-50000Hz.
A kind of method of patterned arrangement of organic single-crystal particle two dimensional structure, it is through photoetching method, realizes the patterned arrangement of two dimensional structure at the photoresist of the certain pattern of photomask surface of the electro-conductive glass of bottom.
Compared with prior art, the present invention has following beneficial effect:
1, simple and quick, with low cost;
2, two dimensional structure can be through changing the electric pulse field parameter regulation and control;
3, two dimensional structure is reversible, and repeatability is high;
4, be applicable to without size the organic single-crystal particle of different-shape.
To sum up, because preparation technology of the present invention is simple, controllability is strong, and universality is good, and therefore reversible the and good reproducibility of two dimensional structure is a kind of good method for preparing the two dimensional structure of organic single-crystal material.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. detailed description.The specific embodiment of the present invention is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the microscope details in a play not acted out on stage, but told through dialogues picture of the organic single-crystal particle two dimensional structure of one embodiment of the invention.
Fig. 2 is the microscope details in a play not acted out on stage, but told through dialogues picture of the organic single-crystal particle two dimensional structure of another embodiment of the present invention, and wherein, Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) are respectively the structural representation that the AC field difference applies situation.
Fig. 3 is the microscope details in a play not acted out on stage, but told through dialogues picture of the organic single-crystal particle two dimensional structure of another embodiment of the present invention, and wherein, Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) are the structural representation under the different frequency of AC field.
Fig. 4 is the microscope details in a play not acted out on stage, but told through dialogues picture of the organic single-crystal particle two dimensional structure of an embodiment more of the present invention, and wherein, Fig. 4 (a), Fig. 4 (b), Fig. 4 (c) are the structural representation under the varying strength of AC field.
Fig. 5 is the microscope details in a play not acted out on stage, but told through dialogues picture of the single organic single-crystal particle two dimensional structure of an embodiment more of the present invention.
Fig. 6 is the microscope details in a play not acted out on stage, but told through dialogues picture of the organic single-crystal particle two dimensional structure of an embodiment more of the present invention, and wherein, Fig. 6 (a) and Fig. 6 (b) are the structural representation under the diameter condition of different of organic single-crystal particle.
Fig. 7 is the microscope details in a play not acted out on stage, but told through dialogues picture of the organic single-crystal particle two dimensional structure of an embodiment more of the present invention.
Fig. 8 is the microscope details in a play not acted out on stage, but told through dialogues picture of the organic single-crystal particle two dimensional structure of an embodiment more of the present invention, and wherein, Fig. 8 (a) and Fig. 8 (b) are respectively the structural representation under the organic single-crystal particle different-shape.
Fig. 9 is the microscope details in a play not acted out on stage, but told through dialogues picture of the organic single-crystal particle two dimensional structure of an embodiment more of the present invention.
Figure 10 is the microscope details in a play not acted out on stage, but told through dialogues picture of the organic single-crystal particle two dimensional structure of an embodiment more of the present invention.
The specific embodiment
Below with reference to accompanying drawing and combine embodiment, specify the present invention.
Experimental technique described in the following embodiment like no specified otherwise, is conventional method; Said reagent and material like no specified otherwise, all can obtain from commercial sources.
Embodiment 1:
(1) it is dodecahedral 2,5,8 as the quadrature of 2.5um to use key to get a certain amount of diameter, and 11-four uncle Ding Ji perylene single crystal grains add a certain amount of deionized water in serum bottle;
(2) with serum bottle as in the Ultrasound Instrument ultrasonic 5 minutes, form monodisperse system;
(3) dispersion that obtains in the step (2) is injected again the capacitor that the parallel electrically conductive glass of two horizontal positioned is processed;
(4) on electrode, applying electric-field intensity is 4.5 * 10
4V/m, frequency is the AC field of 500Hz, places 5 minutes.
The direct current that on electrode, to apply a voltage when (5) removing AC field be 10V removed direct current after 2 seconds, opened capacitor.The microscope details in a play not acted out on stage, but told through dialogues picture of resulting structures is shown in accompanying drawing 1.
Embodiment 2:
Method according to embodiment 1; Difference is in the present embodiment; Do not apply direct current when in step 5, removing AC field yet; Being depicted as the result who obtains under embodiment 1 condition like Fig. 2 (a), being depicted as situation about keeping after no electric field applies 10 seconds like Fig. 2 (b), is to apply the situation that AC field kept 30 seconds like Fig. 2 (c).
Embodiment 3:
According to the method for embodiment 1, difference is in the present embodiment, changes the frequency of AC field into 500Hz respectively, 900Hz and 1300Hz.The gained result is respectively shown in Fig. 3 (a)-Fig. 3 (c).
Embodiment 4:
According to the method for embodiment 1, the different support be in the present embodiment, changes the intensity of the AC field that applies into 3.2 * 10 respectively
4V/m, 2.7 * 10
4V/m and 2.2 * 10
4V/m.The gained experimental result is respectively shown in accompanying drawing 4 (a)-Fig. 4 (c).
Embodiment 5:
According to the method for embodiment 1, difference is in the present embodiment, and bottom crown is changed to the electro-conductive glass pole plate that has latticed photoengraving pattern, simultaneously electric-field intensity is become 10 * 10
4V/m.The electro-conductive glass channel width is 3um in this pole plate, and not having two distances between the raceway groove is 15um.Gained result's microscope fluorescence mode picture is as shown in Figure 5.
Embodiment 6:
According to the method for embodiment 5, difference is in the present embodiment, and the diameter of organic single-crystal particle is changed into 600nm and 1. 4um respectively.The gained result is respectively shown in accompanying drawing 6 (a) and Fig. 6 (b).
Embodiment 7:
According to the method for embodiment 5, difference is in the present embodiment, bottom crown is changed into the photoetching pole plate of " FUNSOM " printed words.Each alphabetical electro-conductive glass channel width is 3um, and letter highly is 30um.Used organic single-crystal granular size is 600nm.The gained result is shown in accompanying drawing 7.
Embodiment 8:
According to the method for embodiment 5, difference is in the present embodiment, the cube that particle is changed into 700nm with cut away the cube of seamed edge.The gained result is shown in accompanying drawing 8 (a) and Fig. 8 (b).
Embodiment 9:
According to the method for embodiment 8, difference is in the present embodiment, bottom crown is changed into the photoetching pole plate that is made up of concentric circles.It is 3um that each concentric circles electro-conductive glass gets at width, and the organic single-crystal particle is the cube that is cut off seamed edge of 700nm.The gained result is shown in accompanying drawing 9.
Embodiment 10:
According to the method for embodiment 5, difference is in the present embodiment, changes the frequency of electric field into 30000Hz, and the gained result is shown in accompanying drawing 10.
The above is merely preferred case study on implementation of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method for preparing organic single-crystal particle two dimensional structure is characterized in that, may further comprise the steps:
Step 1) is scattered in the organic single-crystal particle in the dispersant, ultrasonic 3-5 minute, makes it to form monodisperse system;
Step 2) said monodisperse system is injected plane-parallel capacitor, said plane-parallel capacitor is made up of the electro-conductive glass of two parallel placements;
Step 3) connects current field at said plane-parallel capacitor two ends, and said organic single-crystal particle causes at electricity under the effect of fluid on the surface of the electro-conductive glass of bottom and forms organic single crystal grain two dimensional structure.
2. the method for preparing organic single-crystal particle two dimensional structure according to claim 1; It is characterized in that; Comprise that also step 4) feeds one direct current on plane-parallel capacitor, make said two dimensional structure be fixed on the surface of electro-conductive glass of bottom.
3. the method for preparing organic single-crystal particle two dimensional structure according to claim 1 is characterized in that: the scope of the diameter of said organic single-crystal particle is 500nm-5um.
4. the method for preparing organic single-crystal particle two dimensional structure according to claim 1 is characterized in that: the pattern of said organic single-crystal particle comprises cube, by the cube of seamed edge etching or quadrature dodecahedron.
5. the method for preparing organic single-crystal particle two dimensional structure according to claim 1 is characterized in that: said organic single-crystal particle is 2,5,8,11-four uncle Ding Ji perylenes.
6. the method for preparing organic single-crystal particle two dimensional structure according to claim 1 is characterized in that: said dispersant is a deionized water.
7. the method for preparing organic single-crystal particle two dimensional structure according to claim 1 is characterized in that: the distance of the electro-conductive glass of described two parallel placements is about 80-100 μ m.
8. the method for preparing organic single-crystal particle two dimensional structure according to claim 1 is characterized in that: said current field is an AC field.
9. according to the method for preparing organic single-crystal particle two dimensional structure according to claim 8, it is characterized in that: the scope of the electric-field intensity of said AC field is 1 * 10
4-10 * 10
4V/m, frequency range is 100-1000Hz or 20000-50000Hz.
10. according to the patterned arrangement method of the organic single-crystal particle two dimensional structure of any described method preparation for preparing organic single-crystal particle two dimensional structure in the claim 1 to 9; It is characterized in that:, realize the patterned arrangement of two dimensional structure at the photoresist of the certain pattern of photomask surface of the electro-conductive glass of bottom through photoetching method.
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| CN101143709A (en) * | 2007-10-24 | 2008-03-19 | 南京大学 | Method for preparing two-dimension square colloidal crystal |
| CN101891141A (en) * | 2009-05-24 | 2010-11-24 | 中国科学院合肥物质科学研究院 | Two-dimensional and double-cycle ordered structure array and preparation method thereof |
| CN102126703A (en) * | 2010-01-15 | 2011-07-20 | 中国科学院合肥物质科学研究院 | Two-dimensional multi-shell hollow sphere ordered structure array and preparation method thereof |
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2011
- 2011-11-04 CN CN2011103444180A patent/CN102367166A/en active Pending
Patent Citations (5)
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| JP3155854B2 (en) * | 1993-03-31 | 2001-04-16 | サントリー株式会社 | Protein molecular membrane |
| CA2418138A1 (en) * | 2003-01-29 | 2004-07-29 | Eugenia Kumacheva | Method of colloid crystal growth on patterned surfaces |
| CN101143709A (en) * | 2007-10-24 | 2008-03-19 | 南京大学 | Method for preparing two-dimension square colloidal crystal |
| CN101891141A (en) * | 2009-05-24 | 2010-11-24 | 中国科学院合肥物质科学研究院 | Two-dimensional and double-cycle ordered structure array and preparation method thereof |
| CN102126703A (en) * | 2010-01-15 | 2011-07-20 | 中国科学院合肥物质科学研究院 | Two-dimensional multi-shell hollow sphere ordered structure array and preparation method thereof |
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Application publication date: 20120307 |