http://nanogloss.com/nanoparticles/gold-nanoparticles-101/ All about nanotechnology, nanomedicine, nanotubes and everything else nano. Mon, 31 Oct 2011 19:23:20 +0000 hourly 1 http://wordpress.org/?v=3.2.1 http://nanogloss.com/nanoparticles/gold-nanoparticles-101/comment-page-1/#comment-475 twenneth Fri, 24 Jun 2011 08:33:13 +0000 http://nanogloss.com/?p=95#comment-475 Understanding the adsorption of gold nanoparticles (AuNPs) on self-assembled monolayers (SAMs) is important because an assembly of the AuNPs-SAM-gold substrate provides easily controllable metal–metal junctions, in which fascinating phenomena such as electron tunneling and surface-enhanced Raman scattering can occur. In this work, we report strikingly different adsorption patterns of AuNPs on methyl-terminated SAMs. In contrast to the general belief that the terminal functional groups determine the surface properties of SAMs, the AuNPs adsorb on the surfaces of SAMs of 4-methylbenzenethiols (MBT) in a uniform, dispersed fashion, whereas aggregated adsorption is observed on the surfaces of SAMs of alkanethiols. Understanding the adsorption of gold nanoparticles (AuNPs) on self-assembled monolayers (SAMs) is important because an assembly of the AuNPs-SAM-gold substrate provides easily controllable metal–metal junctions, in which fascinating phenomena such as electron tunneling and surface-enhanced Raman scattering can occur. In this work, we report strikingly different adsorption patterns of AuNPs on methyl-terminated SAMs. In contrast to the general belief that the terminal functional groups determine the surface properties of SAMs, the AuNPs adsorb on the surfaces of SAMs of 4-methylbenzenethiols (MBT) in a uniform, dispersed fashion, whereas aggregated adsorption is observed on the surfaces of SAMs of alkanethiols.

]]> http://nanogloss.com/nanoparticles/gold-nanoparticles-101/comment-page-1/#comment-39 Metal Nanoparticles Tue, 07 Jul 2009 21:10:48 +0000 http://nanogloss.com/?p=95#comment-39 [...] « Gold Nanoparticles 101 Nanoparticle Masks and Goggles [...] [...] « Gold Nanoparticles 101 Nanoparticle Masks and Goggles [...]

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