期刊
LANGMUIR
卷 27, 期 7, 页码 3355-3360出版社
AMER CHEMICAL SOC
DOI: 10.1021/la104786z
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资金
- MRSEC at Princeton University NSF [DMR 0819860]
- Science and Engineering Research Council (SERC) of the Agency for Science, Technology and Research (A*STAR) Singapore
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [819860] Funding Source: National Science Foundation
Self-assembly of nanometer-sized particles is an elegant and economical approach to achieve dense patterns over large areas beyond the resolution and throughput capabilities of electron-beam lithography. In this paper, we present results of self-assembly of oleylamine-capped gold nanoparticles with 8.0 +/- 0.3 nm diameter into densely packed and well-ordered monolayers with center-to-center distance of similar to 11 nm. Self-assembly was done in a Langmuir-Blodgett trough and picked up onto Si substrates. The nanopartides undesirably assembled within micrometer-sized droplets that were organic in nature. However, within these droplets, we observed that the addition of the excess ligand, oleylamine, drastically enhanced the self-assembly of the nanoparticles into monolayers with near-perfect ordering. This approach has the potential use in templated self-assembly of nanopartides for rearranging poorly ordered assembly into a commensurate prepatterned substrate.
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