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. 2022 Jun 30;23(13):7278. doi: 10.3390/ijms23137278

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

(a) Schematic of PDA-grafted nanoparticles to functionalize hydrogel. Reprinted with permission from [110] (copyright: Wiley-VCH, 2019). (b) Schematic representation of PDA-coated CNT-based composite hydrogels. Reprinted with permission from [111] (copyright: Elsevier, 2019). (c) Schematic illustration of the photo-disinfection and osteogenic abilities of PDA/graphene oxide/oligopeptide-decorated SPEEK implant. Reprinted with permission from [112] (copyright: Royal Society of Chemistry, 2020).