| 초록 |
Catecholamines are organic materials found in nature, such as mussel foot proteins, melanin pigments, and insect cuticles. They have unique optical properties that absorb a broad range of light from UV to NIR, and antioxidant properties that help protect nearby cells. In addition, their versatile adhesion found in mussel food proteins have inspired their use as coatings for surface biofunctionalization. Here, we report a simple site-specific fabrication method for polymerized catecholic pigment guided by an enzyme that mediates local oxidation of catecholic precursors on the desired surface. Among the various precursors, a mixture of pyrocatechol and diethylenetriamine was selected based on its fast enzymatic turn-over rate and adhesion to the enzyme without diffusion. Finally, it was confirmed that on-surface fabricated polycatecholic pigment exhibited high-efficiency photothermal conversion, which could be a trigger for the dehydration-based actuation of hydrogels. |
