| 초록 |
Catecholamines have been regarded as a unique strategy for material-independent surface functionalization, and extensively utilized in energy, biomedical, and environmental applications. To achieve catecholamine coatings, the substrates are generally immersed in catecholamine solution in pH 8.5 at RT for 18h. Chemical oxidants such as metal ions or sodium periodate can accelerate the oxidative coating process, however, most of studies still use the chemical oxidant-free, overnight-coating method. Here, we found that the oxidation of catecholamines can be accelerated by microwave-irradiation. When the dopamine solution is irradiated by microwave, polydopamine nanofilm can be formed in 15 min. The coating rate of other catecholamines increased up to 10 times than typical coating method. Addition of radical scavenging agent to the coating solution resulted in quenching of the acceleration effect, which suggests the underlying mechanism of the acceleration is involved in radical species. |
