Results 271 to 280 of about 24,196 (304)

Mechanical Enhancement of Bioinspired Polydopamine Nanocoatings

ACS Applied Materials & Interfaces, 2019
Inspired by the catechol and amine-rich adhesive proteins of mussels, polydopamine (pDA) has become one of the most widely employed methods for functionalizing material surfaces, powered in part by the versatility and simplicity of pDA film deposition that takes place spontaneously on objects immersed in an alkaline aqueous solution of dopamine monomer.
Katerina G. Malollari, Peyman Delparastan, Caroline Sobek, Shraddha J. Vachhani, Tanner D. Fink, R. Helen Zha, Phillip B. Messersmith   +6 more
openaire   +2 more sources

Synthesis and Characterization of Aminopropyltriethoxysilane-Polydopamine Coatings

Langmuir, 2016
Polydopamine coatings are of interest due to the fact that they can promote adhesion to a broad range of materials and can enable a variety of applications. However, the polydopamine-substrate interaction is often noncovalent. To broaden the potential applications of polydopamine, we show the incorporation of 3-aminopropyltriethoxysilane (APTES), a ...
Daniel B, Knorr, Ngon T, Tran, Karen J, Gaskell, Joshua A, Orlicki, Joseph C, Woicik, Cherno, Jaye, Daniel A, Fischer, Joseph L, Lenhart   +7 more
openaire   +2 more sources

Kinetics of polydopamine film deposition as a function of pH and dopamine concentration: Insights in the polydopamine deposition mechanism

Journal of Colloid and Interface Science, 2012
The formation of "polydopamine" thin films becomes a popular method to confer multifunctionality to solid-liquid interfaces through the available catechol groups of such films. The mechanism of film formation is, however, not well elucidated, and most investigators use the protocol developed by Messersmith et al. (H. Lee, S.M. Dellatore, W.M. Miller, P.
David Ruch, Vincent Ball
exaly   +3 more sources

Electric field-induced deposition of polydopamine and polydopamine-based composite coating for enhanced osteogenesis

Journal of Colloid and Interface Science
Polydopamine (PDA), recognized as a vital bioadhesive, plays a critical role in the development of highly adhesive coatings with tunable biofunctional properties on metallic artificial joint surfaces. Electrophoretic deposition (EPD) has emerged as a facile and efficient technique for coating fabrication. However, the mechanism underlying the formation
Yun, Tang, Guangli, Xing, Xinrui, Shu, Nan, Yan, Yuhan, Zhang, Hudie, Yuan, Xianglong, Wu, Qiang, Chen   +7 more
openaire   +2 more sources

Texture-Dependent Adhesion in Polydopamine Nanomembranes

ACS Applied Materials & Interfaces, 2018
The conformal nature of in situ polymerization of adhesive dopamine molecules permits the strong underwater adhesion between polydopamine (PDA) nanomembranes and the target substrates. However, the adhesive interaction between the postdeposit PDA nanomembranes and other macrobodies is strongly influenced by the texture of PDA nanomembranes.
Ik Soo Kwon, Guannan Tang, Po-Ju Chiang, Christopher J. Bettinger   +3 more
openaire   +2 more sources

The synthesis of polydopamine nano- and microspheres in microdroplets

Chemical Communications
Polydopamine nano- and microspheres, with aminochrome as the principal building block, were rapidly and controllably synthesized in microdroplets.
Jianze Zhang, Shufang Tian, Chenghui Zhu, Lifeng Han, Xinxing Zhang   +4 more
openaire   +2 more sources

Thermal‐Induced Transformation of Polydopamine Structures: An Efficient Route for the Stabilization of the Polydopamine Surfaces

Macromolecular Chemistry and Physics, 2013
AbstractThis work brings a new insight into the structural transformation and stabilization of polydopamine (PDA) surfaces induced by thermal treatment. Taking advantage of the isotopic enrichment, 15N CP/MAS NMR experiments produce significant signal enhancements for PDA, allowing detection of a range of nitrogen structural units—the reaction products
Vladimír Proks, Jiří Brus, Ognen Pop‐Georgievski, Eva Večerníková, Waldemar Wisniewski, Jiří Kotek, Matrina Urbanová, František Rypáček   +7 more
openaire   +1 more source

Structure of Polydopamine: A Never-Ending Story?

Langmuir, 2013
Polydopamine (PDA) formed by the oxidation of dopamine is an important polymer, in particular, for coating various surfaces. It is composed of dihydroxyindole, indoledione, and dopamine units, which are assumed to be covalently linked. Although PDA has been applied in a manifold way, its structure is still under discussion.
Jürgen, Liebscher, Radosław, Mrówczyński, Holger A, Scheidt, Claudiu, Filip, Niculina D, Hădade, Rodica, Turcu, Attila, Bende, Sebastian, Beck   +7 more
openaire   +2 more sources

Comparison of surface properties of polydopamine and polydopamine-tannic acid-based multilayer films

Journal of Macromolecular Science, Part A
The surface properties of various multilayers obtained by codeposition of polydopamine (PDA) and tannic acid (TA), referred to as PDATA, were investigated in comparison with PDA multilayers. Two different approaches were used in the preparation of multilayers. First, multilayers composed solely of either PDATA or PDA were constructed. Second, they were
Terzioglu-Ekenler, Ipek, Gençer, İpek, Postaci, Doga, Gokce, Tuna, Erel Göktepe, İrem   +4 more
openaire   +2 more sources

Polydopamine Integrated Nanomaterials and Their Biomedical Applications

Current Pharmaceutical Design, 2015
In the past few decades, the applications of nanomaterials in biologic systems have become one of the most studied areas. Many novel syntheses and processing methods have been developed to generate nanomaterials to enhance biomedical applications. Among those methods, polydopamine (PDA) integrated nanomaterials have attracted considerable interest for ...
Xiaoping, Chen, Yongshun, Huang, Gang, Yang, Jiaxing, Li, Tingting, Wang, Olaf H, Schulz, Lisa K, Jennings   +6 more
openaire   +2 more sources