Journal ArticleDOI
Surface Characteristics of a Self-Polymerized Dopamine Coating Deposited on Hydrophobic Polymer Films
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TLDR
It is indicated that the deposition behavior of pDA is not strongly dependent on the nature of the substrates, and effective strategies for exploiting the properties of dopamine to create novel functional polymer materials are found.Abstract:
This study aims to explore the fundamental surface characteristics of polydopamine (pDA)-coated hydrophobic polymer films. A poly(vinylidene fluoride) (PVDF) film was surface modified by dip coating in an aqueous solution of dopamine on the basis of its self-polymerization and strong adhesion feature. The self-polymerization and deposition rates of dopamine on film surfaces increased with increasing temperature as evaluated by both spectroscopic ellipsometry and scanning electronic microscopy (SEM). Changes in the surface morphologies of pDA-coated films as well as the size and shape of pDA particles in the solution were also investigated by SEM, atomic force microscopy (AFM), and transmission electron microscopy (TEM). The surface roughness and surface free energy of pDA-modified films were mainly affected by the reaction temperature and showed only a slight dependence on the reaction time and concentration of the dopamine solution. Additionally, three other typical hydrophobic polymer films of polytetrafluoroethylene (PTFE), poly(ethylene terephthalate) (PET), and polyimide (PI) were also modified by the same procedure. The lyophilicity (liquid affinity) and surface free energy of these polymer films were enhanced significantly after being coated with pDA, as were those of PVDF films. It is indicated that the deposition behavior of pDA is not strongly dependent on the nature of the substrates. This information provides us with not only a better understanding of biologically inspired surface chemistry for pDA coatings but also effective strategies for exploiting the properties of dopamine to create novel functional polymer materials.read more
Citations
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Journal ArticleDOI
Polydopamine and Its Derivative Materials: Synthesis and Promising Applications in Energy, Environmental, and Biomedical Fields
Yanlan Liu,Kelong Ai,Lehui Lu +2 more
Journal ArticleDOI
Antifouling membranes for sustainable water purification: strategies and mechanisms
TL;DR: This review will first introduce the major foulants and the principal mechanisms of membrane fouling, and then highlight the development, current status and future prospects of antifouling membranes, including ant ifouling strategies, preparation techniques and practical applications.
Journal ArticleDOI
Adhesive Hemostatic Conducting Injectable Composite Hydrogels with Sustained Drug Release and Photothermal Antibacterial Activity to Promote Full-Thickness Skin Regeneration During Wound Healing
TL;DR: These adhesive hemostatic antioxidant conductive photothermal antibacterial hydrogels based on hyaluronic acid-graft-dopamine and reduced graphene oxide using a H2 O2 /HPR (horseradish peroxidase) system are prepared for wound dressing and are an excellent wound dressing for full-thickness skin repair.
Journal ArticleDOI
Characterization of polydopamine thin films deposited at short times by autoxidation of dopamine.
TL;DR: Chemical and physical characterization of polydopamine films deposited on gold surfaces from stirred basic solutions at times ranging from 2 to 60 min are reported, with a focus on times ≤10 min.
Journal ArticleDOI
Surface Modification of Water Purification Membranes
Daniel J. Miller,Daniel J. Miller,Daniel R. Dreyer,Christopher W. Bielawski,Donald R Paul,Benny D. Freeman +5 more
TL;DR: A series of common techniques for modification of the membrane surface are reviewed, including surface coating, grafting, and various treatment techniques such as chemical treatment, UV irradiation, and plasma treatment.
References
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Journal ArticleDOI
Mussel-Inspired Surface Chemistry for Multifunctional Coatings
TL;DR: Inspired by the composition of adhesive proteins in mussels, dopamine self-polymerization is used to form thin, surface-adherent polydopamine films onto a wide range of inorganic and organic materials, including noble metals, oxides, polymers, semiconductors, and ceramics.
Journal ArticleDOI
Single-molecule mechanics of mussel adhesion
TL;DR: A single-molecule study of the substrate and oxidation-dependent adhesive properties of dopa is reported, in which dopa exploits a remarkable combination of high strength and chemical multifunctionality to accomplish adhesion to substrates of widely varying composition.
Journal ArticleDOI
Facile Conjugation of Biomolecules onto Surfaces via Mussel Adhesive Protein Inspired Coatings
TL;DR: A facile two-step aqueous approach to immobilization of biomolecules onto surfaces is reported, which exploits the latent reactivity of the biomimetic polymer thin film towards nucleophiles, is unaffected by water, and allows for discrimination betweenucleophiles on the basis of pKa.
Journal ArticleDOI
Mussel-Inspired Polydopamine Coating as a Universal Route to Hydroxyapatite Crystallization
TL;DR: A universal biomineralization route, called polydopamine‐assisted hydroxyapatite formation (pHAF), that can be applied to virtually any type and morphology of scaffold materials is demonstrated and can be an innovative foundation for future tissue engineering.
Journal ArticleDOI
Oxidant-induced dopamine polymerization for multifunctional coatings
TL;DR: Polydopamine-coating can be prepared in acidic, neutral and alkaline aqueous media by oxidant-induced polymerization, which is material-independent and multifunctional for surface modification as mentioned in this paper.
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