화학공학소재연구정보센터
Langmuir, Vol.24, No.16, 8912-8917, 2008
Self-assembled monolayer and multilayer films of the nanocluster [HxPMo12O40 subset of H4Mo72Fe30(O2CMe)(15)O-254(H2O)(68)] on gold
Films of the molybdenum-iron nanocluster [HxPMo12O40 subset of H4Mo72Fe30(O2CMe)(15)O-254(H2O)(68)] (FeMoC) were generated on gold via the self-assembly technique using two divergent routes. The first route entails the self-assembly of unfunctionalized FeMoC onto a preprepared carboxyl-terminated SAM on gold. The second route involves the preparation of thiol-terminated functionalized FeMoC clusters, which are then allowed, to self-assemble onto bare gold surfaces. Monolayer films of FeMoC clusters are attained via both routes, with the second route requiring shorter immersion times (2 days) than the first route (6 days). Multilayer films of FeMoC are formed via the second route for immersion times longer than 2 days. Characterization of these films using optical ellipsometry, X-ray photoelectron spectroscopy, and atomic force microscopy confirm the self-assembly of the clusters on the surfaces.