Details

Autor(en) / Beteiligte

• Fang, Ping-Ping
• Chen, Shu
• Deng, Haiqiang
• Scanlon, Micheál D
• Gumy, Frédéric
• Lee, Hye Jin
• Momotenko, Dmitry
• Amstutz, Véronique
• Cortés-Salazar, Fernando
• Pereira, Carlos M
• Yang, Zhilin
• Girault, Hubert H

Titel

Conductive Gold Nanoparticle Mirrors at Liquid/Liquid Interfaces

Ist Teil von

• ACS nano, 2013-10, Vol.7 (10), p.9241-9248

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Gold nanoparticle (Au NP) mirrors, which exhibit both high reflectance and electrical conductance, were self-assembled at a [heptane + 1,2-dichloroethane]/water liquid/liquid interface. The highest reflectance, as observed experimentally and confirmed by finite difference time domain calculations, occurred for Au NP films consisting of 60 nm diameter NPs and approximate monolayer surface coverage. Scanning electrochemical microscopy approach curves over the interfacial metallic NP films revealed a transition from an insulating to a conducting electrical material on reaching a surface coverage at least equivalent to the formation of a single monolayer. Reflectance and conductance transitions were interpreted as critical junctures corresponding to a surface coverage that exceeded the percolation threshold of the Au NP films at the [heptane + 1,2-dichloroethane]/water interface.