A kind of dopamine ink and its method and application for preparing micro-nano pattern
A micro-nano pattern and dopamine technology, applied in applications, inks, household appliances, etc., can solve problems such as low efficiency, and achieve the effect of improving universality, low cost, and facilitating the preparation of high-throughput and high-precision micro-nano arrays
Active Publication Date: 2022-02-22
SUN YAT SEN UNIV
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AI Technical Summary
Problems solved by technology
The dopamine monomer solution can be directly written by using nanoprobes and polymerized into PDA nanopatterns in the air, but the preparation range is less than 100 microns and the efficiency is low
Method used
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Experimental program
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Effect test
Embodiment 1
[0053] A dopamine ink:
[0054] Dopamine hydrochloride 5 mg / mL, Tween-20 0.1 mg / mL, ascorbic acid 3 mg / mL, glycerol 200 mg / mL, ethanol 90% v / v and water 10% v / v.
Embodiment 2
[0056] A dopamine ink:
[0057] Dopamine hydrochloride 10 mg / mL, Tween-20 0.6 mg / mL, ascorbic acid 5 mg / mL, polyethylene glycol 200 mg / mL, ethanol 80% v / v and water 20% v / v.
Embodiment 3
[0059] A dopamine ink:
[0060] Dopamine hydrochloride 20 mg / mL, Tween-20 5 mg / mL, ascorbic acid 10 mg / mL, ethylene glycol 10 mg / mL, ethanol 80% v / v and water 20% v / v.
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Abstract
The invention belongs to the technical field of functional micro-nano patterning, and specifically relates to a dopamine ink and its method and application for preparing micro-nano patterns. The components of the dopamine ink include dopamine hydrochloride, Tween-20, ascorbic acid, thickener, organic solvent and water. A kind of method that dopamine ink is used for preparing micro-nano pattern, comprises the steps: 1) carries out surface modification with printing base; 2) evenly spin-coats dopamine ink on the surface of soft stamp; 3) prints base and soft seal contact and slightly Press to form a droplet array on the surface of the printing substrate, and react under an ammonia atmosphere or ultraviolet light to obtain a polydopamine micro-nano pattern. The dopamine ink has strong air stability. The polymerization reaction of dopamine is regulated by ammonia gas or ultraviolet light, and the micro-nano patterned structure of polydopamine is generated by in-situ polymerization in micro-droplets, so that the micro-droplets can be used at high Hydrophobic, anti-stick surface for reliable and even printing.
Description
technical field [0001] The invention belongs to the technical field of functional micro-nano patterning, and specifically relates to a dopamine ink and its method and application for preparing micro-nano patterns. Background technique [0002] The multifunctional polydopamine (polydopamine, PDA) material inspired by mussel adhesion protein has been widely used in the past ten years. PDA can be formed by self-polymerization of dopamine monomers. The reaction principles include oxidative polymerization, free radical polymerization and Photochemical polymerization, etc., the formed PDA film can adhere to the surface of a variety of substrate materials without additional modification, which contains a variety of functional groups such as catechol, amine, imine, etc., which can not only improve the surface hydrophilicity of the material, but also has With good biocompatibility, other functional materials can be prepared through adsorption immobilization and secondary modification...
Claims
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IPC IPC(8): C09D11/033C09D11/03
CPCC09D11/033C09D11/03
Inventor 谢庄方绿叶张静华
Owner SUN YAT SEN UNIV