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Method for preparing mesoscopic scale line-shaped organic crystal

An organic crystal and line-shaped technology, which is applied in the field of optoelectronic information materials, can solve the problems of organic crystals with many defects and poor size controllability, and achieve crystal lattice with activity, good growth ability, and good size controllability Effect

Inactive Publication Date: 2016-09-28
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a method for preparing mesoscale linear organic crystals. The method for preparing mesoscopic linear organic crystals should solve the problem of preparing the mesoscopic linear organic crystals. The technical problems of many organic crystal defects and poor size controllability

Method used

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  • Method for preparing mesoscopic scale line-shaped organic crystal
  • Method for preparing mesoscopic scale line-shaped organic crystal
  • Method for preparing mesoscopic scale line-shaped organic crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of DAST organic crystal lines.

[0034] Take 0.01-0.13 g DAST crystal raw material, add it into 5 ml of anhydrous methanol, and stir at 900 rad / min for 1.5-4 hours. Take 0.1~1 ml of DAST-methanol at room temperature, add it to 10 ml of anhydrous methanol, add 0.0002~0.026 g of modifier, stir at 800~1200 rad / min for 8 hours, take 0.05~0.1ml of the above mixed The solution is evaporated under a heating substrate at 50-100 degrees Celsius for 10-300 seconds, and cultured in a petri dish for 5-10 hours to obtain DAST organic crystal lines.

[0035] In this method, due to the influence of the modifier and the material of the substrate, the crystals are aggregated and arranged in one direction, and finally grow into linear crystals. The size direction of the mesoscopic linear organic crystals changes according to the mass ratio of the modifier to the organic crystals, the temperature of the heated substrate, and the change of the hydrophilicity of the substrate. ...

Embodiment 2

[0037] Preparation of DAST organic crystal lines.

[0038] Take 0.03 g of DAST crystal raw material, add it into 5 ml of anhydrous methanol, and stir at 900 rad / min for 1.5 to 4 hours. Take 0.1 ml of DAST-methanol at room temperature, add it to 10 ml of anhydrous methanol, add 0.003 g of alkyd resin modifier, stir at 1200 rad / min for 8 hours, take 0.05~0.1 ml of the above mixed solution , evaporated under a heating plate at 60 °C for 20 seconds to obtain DAST organic crystal lines.

[0039] The DAST crystals prepared by this method were not cultured, and were directly observed with a microscope after heating and standing still for 30 minutes. It was found that there were many burrs in the crystal line shape, and the length distribution was about 100 μm.

[0040] See figure 2 .

Embodiment 3

[0042] Preparation of DAST organic crystal lines.

[0043] Take 0.03 g of DAST crystal raw material, add it into 5 ml of anhydrous methanol, and stir at 900 rad / min for 1.5 to 4 hours. Take 0.1 ml of DAST-methanol at room temperature, add it to 10 ml of anhydrous methanol, add 0.003 g of alkyd resin modifier, stir at 1200 rad / min for 8 hours, take 0.05~0.1 ml of the above mixed solution , evaporated under a heating plate at 60 degrees Celsius for 20 seconds, added 3 drops of methanol to the petri dish, and incubated for 10 hours to obtain DAST organic crystal lines.

[0044] The DAST crystal wires prepared by the method were cultured and then observed with a microscope, and it was found that the crystal wires had no burrs in shape, and the surface was relatively smooth when observed with an atomic force microscope, and the length distribution was about 200-300 μm.

[0045] It can be seen that the number of crystal lines is large and evenly distributed, Rq=2.31 nm, Ra=1.74 nm....

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Abstract

The invention discloses a method for preparing mesoscopic scale line-shaped organic crystal. The method comprises the steps of dissolving an organic crystal raw material and a modifier into a first organic solvent, and evenly stirring; after that, dripping the mixed solution onto a substrate with temperature of 50-150 DEG C for evaporating, wherein the evaporation time is controlled to be within 5 minutes; then, putting the substrate into a culture dish, culturing for 5-20 hours, and enabling organic crystal to grow along the single direction to obtain the mesoscopic scale line-shaped organic crystal. According to the method, there is not enough time for polymerization due to high crystal precipitation speed, and a self-assembly process of the solution is influenced by the hydrophilia degree of the material of the heated substrate, so that the mesoscopic scale line-shaped organic crystal appears; furthermore, the size and direction of the mesoscopic scale line-shaped organic crystal change along with the change of a mass ratio of the modifier to the organic crystal, the temperature of the heated substrate and the hydrophilia of the substrate.

Description

technical field [0001] The invention belongs to the field of optoelectronic information materials, and relates to an organic crystal, in particular to a method for preparing a mesoscale linear organic crystal. Background technique [0002] Nonlinear optical crystal is an important photoelectric information functional material, an important material basis for optoelectronic technology, especially laser technology, and an indispensable key material in high-tech and modern military technology. Nonlinear optical crystal materials can be used for laser frequency conversion , to expand the wavelength of the laser; to modulate the intensity and phase of the laser; to realize the holographic storage of the laser signal, to eliminate the self-pumped phase conjugation of the wavefront domain change, etc., and its development level is closely related to the development of laser technology. With the rapid development of the global informatization wave and the wide application of optoele...

Claims

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Application Information

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IPC IPC(8): C30B29/54C30B29/64C30B29/62C30B7/06
CPCC30B7/06C30B29/54C30B29/62C30B29/64
Inventor 蔡斌田甜吴晨寅叶天明展鹏
Owner UNIV OF SHANGHAI FOR SCI & TECH
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