| 초록 |
Significant research efforts are being devoted to achieving highly stable metal-organic framework (MOF) thin films on solid substrates. We demonstrate the synthesis of uniform Cu-BTC films directly on a copper metal substrate with copper hydroxide, using rapid and efficient heat treatment assisted by a nanosecond laser. An oxidized copper substrate with 1,3,5-benzene tricarboxylic acid (BTC) is irradiated by the second harmonic of Nd3+:Y3Al5O12 laser (wavelength, 532 nm), thereby forming Cu-BTC thin films through the photothermal process. The temperature of the laser-irradiated surface was estimated using COMSOL Multiphysics, which suggested the optimization of the laser energy density for Cu-BTC crystal growth. The prepared Cu-BTC films exhibit a high surface area (985 m2/g) at 30 mJ/cm2 energy density, with a peak surface temperature of ~364 K. Notably, Cu-BTC films with a thickness of 10 µm were formed at 3000 laser shots. Thus, the study suggests a novel fabrication method for a design strategy, involving the rapid growth of MOF thin films on metal substrates. |
