Polydopamine films: Versatile but interface-dependent coatings

Polydopamine coatings have been shown to allow to coat almost all materials with conformal films having a tunable thickness from a few up to more than 100 nm (and even more in some specific cases). These films are able to reduce metal cations, to be modified with many chemical moieties and advent he...

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Main Author: Ball Vincent
Format: Article
Language:English
Published: De Gruyter 2024-04-01
Series:Nanotechnology Reviews
Subjects:
Online Access:https://doi.org/10.1515/ntrev-2023-0216
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author Ball Vincent
author_facet Ball Vincent
author_sort Ball Vincent
collection DOAJ
description Polydopamine coatings have been shown to allow to coat almost all materials with conformal films having a tunable thickness from a few up to more than 100 nm (and even more in some specific cases). These films are able to reduce metal cations, to be modified with many chemical moieties and advent hence as a “Holy Grail” in surface chemistry with an impressive amount of applicative papers published since 2007. However, the broad application field and ease of deposition from aqueous solutions hidden the complexity of the deposition mechanism(s). The discovery that polydopamine (PDA) films also form at air/water interfaces (in the absence of stirring or in stirring dependent manner) to yield membranes with physicochemical properties different than PDA films deposited at solid/water interfaces highlighted for the first time that the nature of the interfaces plays a major role in the PDA film growth mechanism and in the film properties. More recent research allowed to show that the surface chemistry of the used solid substrate modifies the composition of the thin deposited PDA film during the early stages of the deposition process with further deposition yielding to an almost substrate-independent PDA film. It is the aim of this review to describe complex surface effects occurring in PDA deposition and hence to complement other reviews which described the complexity of the chemistry yielding to PDA coatings.
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spelling doaj.art-c8c05df6d32a4ec1b37b9d1f7e87d13e2024-04-08T07:36:20ZengDe GruyterNanotechnology Reviews2191-90972024-04-0113115335410.1515/ntrev-2023-0216Polydopamine films: Versatile but interface-dependent coatingsBall Vincent0Faculté de Chirurgie Dentaire, Université de Strasbourg, 8 rue Sainte Elisabeth, 67000, Strasbourg, FrancePolydopamine coatings have been shown to allow to coat almost all materials with conformal films having a tunable thickness from a few up to more than 100 nm (and even more in some specific cases). These films are able to reduce metal cations, to be modified with many chemical moieties and advent hence as a “Holy Grail” in surface chemistry with an impressive amount of applicative papers published since 2007. However, the broad application field and ease of deposition from aqueous solutions hidden the complexity of the deposition mechanism(s). The discovery that polydopamine (PDA) films also form at air/water interfaces (in the absence of stirring or in stirring dependent manner) to yield membranes with physicochemical properties different than PDA films deposited at solid/water interfaces highlighted for the first time that the nature of the interfaces plays a major role in the PDA film growth mechanism and in the film properties. More recent research allowed to show that the surface chemistry of the used solid substrate modifies the composition of the thin deposited PDA film during the early stages of the deposition process with further deposition yielding to an almost substrate-independent PDA film. It is the aim of this review to describe complex surface effects occurring in PDA deposition and hence to complement other reviews which described the complexity of the chemistry yielding to PDA coatings.https://doi.org/10.1515/ntrev-2023-0216polydopaminepolydopamine filmspda coatings
spellingShingle Ball Vincent
Polydopamine films: Versatile but interface-dependent coatings
Nanotechnology Reviews
polydopamine
polydopamine films
pda coatings
title Polydopamine films: Versatile but interface-dependent coatings
title_full Polydopamine films: Versatile but interface-dependent coatings
title_fullStr Polydopamine films: Versatile but interface-dependent coatings
title_full_unstemmed Polydopamine films: Versatile but interface-dependent coatings
title_short Polydopamine films: Versatile but interface-dependent coatings
title_sort polydopamine films versatile but interface dependent coatings
topic polydopamine
polydopamine films
pda coatings
url https://doi.org/10.1515/ntrev-2023-0216
work_keys_str_mv AT ballvincent polydopaminefilmsversatilebutinterfacedependentcoatings