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
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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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