Polydopamine Based Colloidal Materials: Synthesis and Applications

Abstract

Polydopamine is a synthetic analogue of natural melanin (eumelanin) produced from oxidative polymerization of dopamine. Owing to its strong adhesion ability, versatile chemical reactivity, biocompatibility and biodegradation, polydopamine is commonly applied as a versatile linker to synthesize colloidal materials with diverse structures, unique physicochemical properties and tunable functions, which allow for a broad scope of applications including biomedicine, sensing, catalysis, environment and energy. In this personal account, we discuss first about the different synthetic approaches of polydopamine, as well as its polymerization mechanism, and then with a comprehensive overview of recent progress in the synthesis and applications of polydopamine-based colloidal materials. Finally, we summarize this personal account with future perspectives.

Polydopamine nanostructures as biomaterials for medical applications

“…This technique was then leveraged to create a supramolecular glue to control the conformations of DNA origami. Controlling PDA nanostructures can also be accomplished by using template-guided synthesis, microemulsion templating, or solvent combinations that shape colloidal PDA into hollow rods or capsules, for example 32,33 . Nador et al describe an approach where sacrificial templates for PDA deposition can be removed using mild post-processing conditions 34 .…”

A versatile colloidal Janus platform: surface asymmetry control, functionalization, and applications

“…Table 1 The concentration ratios (C APTES /C DCDMS ) of (3-aminopropyl)triethoxysilane (APTES) and dichlorodimethylsilane (DCDMS), in relation to the detailed recipes in Table S1 (ESI), and the PDA patch areas as a fraction of the total particle surface area (S PDA /S total ) PDA is abundant in catechol and amino groups, allowing for a rich variety of secondary functionalizations. 26,29,30 Here, we demonstrate the generality of the approach based on three types of surface functionalization based on PDA patches, i.e., (1) in situ metallization, 31 (2) nanoparticle adhesion, and (3) molecule grafting. First, the PDA patches facilitate in situ reduction of Ag + ions to Ag nanoparticles (about 10 nm in diameter, see Fig.…”

Ultrasonication‐Assisted Waterborne Synthesis of Self‐Restorable Superhydrophobic Surfaces with Prolonged Lifespan in Oil Collection

“…The ultrasonication assists H 2 N‐PDMS‐NH 2 to disperse into aqueous phase, forming microdroplets, while providing weakly alkaline environment, which promotes the self‐polymerization of DA into polydopamine (PDA) in the presence of oxygen from air. PDA is highly adhesive due to its abundance in catechol, amine, and imine groups, [ 48,49 ] which reacts with H 2 N‐PDMS‐NH 2 microdroplets, resulting in PDA‐H 2 N‐PDMS‐NH 2 composite microparticles with nanonodular surfaces, as well as anchoring these composite particles onto the surfaces of the substrates, leading to hierarchical surfaces. These hierarchical surfaces are abundant in H 2 N‐PDMS‐NH 2 that is chemicals with low interfacial energy.…”