Research / 2020 / Article / Fig 1

Research Article

A Versatile Surface Bioengineering Strategy Based on Mussel-Inspired and Bioclickable Peptide Mimic

Figure 1

(a) Structural formula of the bioclickable mussel-inspired peptide mimic DOPA4-azide with four catechol groups and one azide group. (b) ESI mass spectrum of DOPA4-azide. (c) 1H NMR spectrum of DOPA4-azide. (d) Schematic illustration of the mussel-inspired peptide mimic for surface modification via catechol-mediated molecular adhesion. (e) The changes of surface wettability on different substrates after DOPA4-azide coating. TiNi: Ti-Ni alloy; 316L SS: 316 low carbon stainless steel; PVC: polyvinyl chloride; PET: polyethylene terephthalate; PU: polyurethane; PS: polystyrene. (f) GATR-FTIR spectrum of the DOPA4-azide coating on Au substrate. (g) The changes of substrate signal and N elemental content after DOPA4-azide coating.