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Title: Fabrication of designed architectures of Au nanoparticles on solid substrate with printed self-assembled monolayers as templates
Authors: Li, S. F. Y.
He, Hui-Xin
Zhang, Hua
Li, Qi Guang
Zhu, Tao
Liu, Zhong-Fan
Keywords: DRNTU::Engineering::Materials
Issue Date: 2000
Source: He, H. X., Zhang, H., Li, Q. G., Zhu, T., Li, S. F. Y., & Liu, Z. F. (2000). Fabrication of designed architectures of Au nanoparticles on solid substrate with printed self-assembled monolayers as templates. Langmuir, 16(8), 3846-3851.
Series/Report no.: Langmuir
Abstract: This paper provides a convenient method for fabricating architectures of Au nanoparticles on solid substrate,with precise position and density control. Our strategy is to modify Au substrate with self-assembled monolayers (SAMs) terminated with different functional groups. They were chosen to be −CH3/−NH2 or −CH3/−SH according to their affinities to Au nanoparticle. Au nanoparticles assemble selectively on −NH2 or −SH terminated locations, the −NH2 functional group binding electrostatically to the nanoparticles whereas the −SH groups bonding chemically. The SAMs, acting as guiding templates for Au nanoparticles, were fabricated by the microcontact printing (μCP) technique. A patterned or unpatterned SAM was prepared by using patterned or unpatterned poly(dimethyl)siloxane (PDMS) stamp, respectively. The coverage of −CH3 terminated SAM in the contact region is controlled by changing the concentration of “ink” solution for the stamp. After immersing the printed SAM into −SH or −NH2 thiol solutions for 2 h, a mixed SAM with a predetermined coverage of −SH or −NH2 was formed in the contact regions, and a pure −SH or −NH2 SAM was formed in the intervening area. The position and density of nanoparticles on the surface were determined by the distribution of the underlying functional groups.
ISSN: 0743-7463
DOI: 10.1021/la991356v
Rights: © 2000 American Chemical Society.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles


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