Tunable Properties of Polydopamine Nanoparticles and Coated Surfaces

Scott S. Ruppel, Junfeng Liang

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Polydopamine (PDA) nanoparticles and PDA-coated surfaces have wide applications due to PDA's unique reactivity and efficient coating ability on nearly any surface. However, challenges in manipulating and controlling dopamine polymerization and thus the PDA nanoparticle formations and surface coatings still exist. Here, dopamine with a tetraborate (borax)-protected catechol group was utilized to tune the properties of PDA nanoparticles and PDA coatings. This method allows us to (1) synthesize PDA nanoparticles with a narrow size distribution and low aggregation and (2) create surface coating with the desired PDA layer thickness and varying water contact angles. PDA nanoparticles and PDA-coated surfaces of varying but tunable chemical and physical properties will find wide applications. For example, such PDA-coated surfaces were successfully used to construct Ag nanoparticle patterned surfaces with varying Ag particle sizes and densities.

Original languageEnglish
Pages (from-to)5020-5029
Number of pages10
JournalLangmuir
Volume38
Issue number16
DOIs
StatePublished - 26 Apr 2022

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