| 초록 |
Polymerized catecholamines have been used as versatile adhesives for surface coating on a variety of materials. These materials possess multifunctionality similar to that of melanin, allowing surface functionalization in various applications. The coating is performed by simple dipping of substrate into a solution containing precursor and oxidant. However, in this dip-coating, additional lithographic and/or microfluidic technologies are necessary to achieve desired pattern in site-specific manner, which are labor-intensive and time-consuming. Herein, we report an inkjet printing method for site-specific coating of poly(catecholamine) by using horseradish peroxidase (HRP) as a guidance. We found that HRP efficiently oxidizes catecholic precursors, and the polymerized catecholamine was only synthesized and coated on surface-bound HRP without diffusion. The fabricated pigment showed melanin-like properties such as good biocompatibility and high photothermal conversion efficiency. |
