Dopamine-Triggered One-Step Polymerization and Codeposition of Acrylate Monomers for Functional Coatings

Abstract

Surface modification has been well recognized as a promising strategy to design and exploit diversified functional materials. However, conventional modification strategies usually suffer from complicated manufacture procedures and lack of universality. Herein, a facile, robust, and versatile approach is proposed to achieve the surface functionalization using dopamine and acrylate monomers via a one-step polymerization and codeposition process. The gel permeation chromatography, proton nuclear magnetic resonance, liquid chromatography-mass spectrometry, and UV-visible spectra results indicate that dopamine possesses the capability of triggering the polymerization of acrylate monomers into high-molecular-weight products, and the inherent adhesive ability of polydopamine can assist the polymerized products to deposit on various substrates. Besides, protein-resistant, antibacterial, and cell adhesion-resistant surfaces can be easily fabricated via the finely designed integration of corresponding acrylate monomers into the codeposition systems. This approach of in situ polymerization and codeposition significantly simplifies the fabrication process and provides more manifold choices for surface modification, which will open a new door for broadening the applications of polydopamine-based coatings.

Compressible Metalized Soft Magnetic Sponges with Tailorable Electrical and Magnetic Properties

“…and Zhang et al. described that dopamine cannot only act as binding agent to adhere onto the surface of substrate, and also serve as the initiator to trigger the radical polymerization of acrylate monomers . Starting from this concept, we employed dopamine as both binding agent and the initiator for one‐step grafting of polymer brushes with quaternary ammonium cations onto sponge fiber through dopamine self‐polymerization and initiated free radical polymerization reaction of 2‐(methacryloyloxy)ethyltrimethylammonium chloride (METAC).…”

“…[49] Typically, Sheng et al and Zhang et al described that dopamine cannot only act as binding agent to adhere onto the surface of substrate, and also serve as the initiator to trigger the radical polymerization of acrylate monomers. [50][51][52] Starting from this concept, we employed dopamine as both binding agent and the initiator for one-step grafting of polymer brushes with quaternary ammonium cations onto sponge fiber through dopamine selfpolymerization and initiated free radical polymerization reaction of 2-(methacryloyloxy)ethyltrimethylammonium chloride (METAC). The introduction of PMETAC blocks in copolymer modified layer cannot only immobilize negative catalyst moieties through electrostatic interaction, and can also enhance the adhesion of subsequent metal deposited layer to sponge skeleton.…”

Amine‐Triggered Dopamine Polymerization: From Aqueous Solution to Organic Solvents

“…DA polymerization triggered by organic amine is faster than that of NaOH solution because the concentration of an organic amine is much higher than that of NaOH solution at the same pH value. In this case, the rate of organic amine to capture H + is faster than that of NaOH solution, it is beneficial to generate radical species and further polymerization of DA via a radical coupling reaction . It is necessary to use amines as an acid‐binding agent due to the continuous ability to capture H + and the solubility in organic solvents.…”

“…Recently, Lee and co‐workers first reported DA polymerization in ethanol or methanol by the proposed mechanism of incorporation of piperidine into the PDA backbone, these resultant molecules undergo further chemical cross‐linking or physical assembly, resulting in PDA structures, but the effects of other amines on DA polymerization are not demonstrated further. Although the reaction route and molecular mechanism of DA polymerization are a scientific problem owing to the complicated redox process and a series of intermediates, researchers have agreed that the deprotonation procedure from DA is beneficial to its oxidation, cyclization, and rearrangement to form free radicals species, and these free radicals can create the covalent linkages between monomeric units that lead to the formation of PDA and eumelanin …”

Mussel‐inspired polydopamine/polystyrene composites with 3D continuous structure and improved thermal, mechanical, and flame retarding properties

“…Dopamine is an important biomolecule that could self‐polymerize in oxidative conditions mimicking mussel‐adhesive proteins . The generated polydopamine (PDA) has good adhesion property and can adhere to almost all organic and inorganic materials, thus it has been widely used for surface modification of various materials . Taking advantages of the adhesion property and multifunctionality of PDA, PDA modified nanoparticles have emerged as excellent fillers for composites with enhanced mechanical property and additional functionalities .…”