Method for preparing organic single crystal particle two-dimensional ordered structure and its patterned arrangement

A technology of single crystal particles and ordered structure, which is applied in the field of preparation of two-dimensional ordered structure of organic single crystal particles and its patterned arrangement, to achieve the effect of reversible, reversible repeatability and high repeatability of two-dimensional ordered structure

Inactive Publication Date: 2012-03-07
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has promoted the development of organic single crystal devices from the laboratory research stage to practical application to a certain extent, but there are also certain limitations.

Method used

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  • Method for preparing organic single crystal particle two-dimensional ordered structure and its patterned arrangement
  • Method for preparing organic single crystal particle two-dimensional ordered structure and its patterned arrangement
  • Method for preparing organic single crystal particle two-dimensional ordered structure and its patterned arrangement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Use a key to take a certain amount of 2,5,8,11-tetra-tert-butylperylene single crystal particles with a diameter of 2.5um orthorhombic dodecahedron into a serum bottle, and add a certain amount of deionized water;

[0043] (2) Place the serum bottle in an ultrasonic instrument and sonicate for 5 minutes to form a monodisperse system;

[0044] (3) Inject the dispersion system obtained in step (2) into a capacitor made of another two parallel conductive glass placed horizontally;

[0045] (4) Apply an electric field strength of 4.5×10 on the electrode 4 V / m, AC electric field with a frequency of 500Hz, placed for 5 minutes.

[0046] (5) While removing the AC electric field, apply a DC voltage of 10V to the electrode, remove the DC power after 2 seconds, and turn on the capacitor. The microscope dark field picture of the obtained structure is attached figure 1 shown.

Embodiment 2

[0048] According to the method of embodiment 1, the difference is that in this embodiment, in step 5, the alternating current electric field is withdrawn and the direct current is not applied at the same time, as figure 2 (a) shows the results obtained under the conditions of Example 1, such as figure 2 (b) shows the situation after maintaining no electric field for 10 seconds, such as figure 2 (c) is the case of applying an AC electric field for 30 seconds.

Embodiment 3

[0050] According to the method of Embodiment 1, the difference is that in this embodiment, the frequency of the AC electric field is changed to 500 Hz, 900 Hz and 1300 Hz respectively. The results obtained are as follows image 3 (a)- image 3 (c) shown.

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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

[0001] technical field [0002] The present invention relates to the controllable self-assembly of a two-dimensional single-layer structure of organic single-crystal materials and its patterning process, more specifically, the present invention relates to the assembly of zero-dimensional organic polyhedral micro-nano crystals into a two-dimensional single-layer structure through an external electric field and methods for patterning arrangements on various two-dimensional scales. Background technique [0003] In recent years, with the vigorous development of assembly technology, more and more ordered assembly structures have been widely used in the field of devices due to their unique properties, and have attracted great attention. V. Bulovic's group assembled CdSe quantum dot (QD) particles into a single-layer thin film structure by material phase separation, sandwiched in two organic layers, and the luminous efficiency of the obtained quantum dot light-emitting diode (QD-LE...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81C3/00
Inventor 张秀娟邹斌张晓宏
Owner SUZHOU UNIV
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