Robust Alginate-Catechol@Polydopamine Free-Standing Membranes Obtained from the Water/Air Interface

Ponzio, Florian; Houérou, Vincent Le; Zafeiratos, Spyridon; Gauthier, Christian; Garnier, Tony; Jierry, Loı̈c; Ball, Vincent

doi:10.1021/acs.langmuir.6b04435

Cited by 24 publications

(22 citation statements)

References 36 publications

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“…Such films are nevertheless extremely brittle. They can be consolidated from a mechanical point of view using poly(ethylene imine) (Hong et al, 2014 ; Yang et al, 2014 ) or alginate modified with catechol groups (Ponzio et al, 2017 ) to yield extremely thick (hundreds of nanometers), flexible, anisotropic, and humidity-responsive membranes.…”

Section: Oxidation Of Catecholamines and Its Consequences On Surfacesmentioning

confidence: 99%

Polydopamine Nanomaterials: Recent Advances in Synthesis Methods and Applications

Ball

2018

Front. Bioeng. Biotechnol.

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214

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Polydopamine (PDA), the final oxidation product of dopamine or other catecholamines, attracted much attention as versatile coatings that can be used to cover the surface of almost all materials with a conformal layer of adjustable thickness ranging from a few to about 100 nm. These PDA layers can be subsequently modified with molecules carrying nucleophilic groups or with metallic nanoparticles from solutions containing metallic cations. However, during the deposition of PDA film on the surfaces, the reaction products that are simultaneously obtained from the oxidation of catecholamines in solution precipitate. Hence, some recent effort has been devoted to produce PDA in the form of nanoparticles. The aim of this short review is to give a comprehensive description of the synthesis methods yielding of PDA nanoparticles in the absence or in the presence of templating agents (polymers, polyelectrolytes, surfactants, proteins, and even some small organic molecules). We will also describe the use of thin PDA layers to coat already synthesized nanoparticles or nanotubes. Finally, several first applications of the obtained PDA nanoparticles will be described.

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Section: Oxidation Of Catecholamines and Its Consequences On Surfacesmentioning

confidence: 99%

Polydopamine Nanomaterials: Recent Advances in Synthesis Methods and Applications

Ball

2018

Front. Bioeng. Biotechnol.

Self Cite

214

144

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“…In the case of alginate derivatives, previous reports obtained catechol contents ranging from 5% to 15% using a feed ratio of carboxylate to catechol of 1:1 [ 32 , 35 , 38 ]. Because this study used a 3:1 ratio, a higher content of catechol in the alginate was achieved.…”

Section: Resultsmentioning

confidence: 99%

“…Various concentrations of AC and GC were dissolved in 10 mM Tris-HCl buffer (pH = 8.5); gel formation was observed at concentrations over 20 mg/mL after 16 h for both AC and GC. In a previous report, above an AC concentration of 30 mg/mL, a hydrogel formed in the presence of dopamine [ 32 ]. Additionally, it has also been reported that cross-linking of AC was accelerated to form a hydrogel under basic conditions in the presence of the chemical oxidizing agent sodium periodate (NaIO 4 ); equimolar amounts of NaIO 4 and catechol in AC resulted in the formation of a hydrogel within 3–4 min after induction of gelation [ 35 ].…”

Section: Resultsmentioning

confidence: 99%

“…The first approach is layer-by-layer formation [ 26 , 27 ], and the second is “composite” PDA-based films. Polymers carrying amino groups in the subphase containing dopamine are able to chemically cross-link PDA during its formation, leading to composite PDA-based films [ 28 , 29 , 30 , 31 , 32 ]. The third method is synthesis of dopamine-derivatized polymers.…”

Section: Introductionmentioning

confidence: 99%

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Template-Assisted Formation of Nanostructured Dopamine-Modified Polymers

et al. 2017

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Dopamine-modified alginate and gelatin were prepared. The polymers were characterized and the properties of their aqueous solutions were investigated. Aqueous solutions of dopamine-modified alginate and gelatin with a concentration exceeding 20 mg/mL naturally formed gels after 16 h. Although polydopamine itself was not used for template-assisted nanostructure formation, the modified polymers could be used with dopamine. Mixing with dopamine allowed the precise shape of the template to be maintained in the resulting material, allowing nanopatterned surfaces and nanotubes to be prepared.

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“…Freestanding PDA films with a thickness of several hundreds of nanometers or even micrometers have been synthesized before. [ 20–27 ] Ultrathin and homogeneous PDA films attached to gold surfaces with thicknesses of 5–20 nm have been prepared by electropolymerization. [ 28 ] Electropolymerization is considerably faster than the often applied dip coating procedure, allowing precise control of the film thickness and homogeneity.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin Polydopamine Films with Phospholipid Nanodiscs Containing a Glycophorin A Domain

D'Alvise

Harvey

Hueske

et al. 2020

Adv Funct Materials

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Cellular membranes have long served as an inspiration for nanomaterial research. The preparation of ultrathin polydopamine (PDA) films with integrated protein pores containing phospholipids and an embedded domain of a membrane protein glycophorin A as simplified cell membrane mimics is reported. Large area, ultrathin PDA films are obtained by electropolymerization on gold surfaces with 10-18 nm thickness and dimensions of up to 2.5 cm 2 . The films are transferred from gold to various other substrates such as nylon mesh, silicon, or substrates containing holes in the micrometer range, and they remain intact even after transfer. The novel transfer technique gives access to freestanding PDA films that remain stable even at the air interfaces with elastic moduli of ≈6-12 GPa, which are higher than any other PDA films reported before. As the PDA film thickness is within the range of cellular membranes, monodisperse protein nanopores, so-called "nanodiscs," are integrated as functional entities. These nanodisc-containing PDA films can serve as semipermeable films, in which the embedded pores control material transport. In the future, these simplified cell membrane mimics may offer structural investigations of the embedded membrane proteins to receive an improved understanding of protein-mediated transport processes in cellular membranes.

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Robust Alginate-Catechol@Polydopamine Free-Standing Membranes Obtained from the Water/Air Interface

Cited by 24 publications

References 36 publications

Polydopamine Nanomaterials: Recent Advances in Synthesis Methods and Applications

Polydopamine Nanomaterials: Recent Advances in Synthesis Methods and Applications

Template-Assisted Formation of Nanostructured Dopamine-Modified Polymers

Ultrathin Polydopamine Films with Phospholipid Nanodiscs Containing a Glycophorin A Domain

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