Abstract
Morphology of Langmuir monolayers of gold clusters stabilized with a series of alkanethiols was investigated at the air/water interface with Brewster Angle Microscopy which revealed substantial differences depending on the length of the alkyl chains (clusters stabilized with C8 and C16 thiols were investigated). 2D electrochemical measurements carried out with line micro-band electrodes showed negligible electronic conductivity of all monolayers even in their most compressed state, apparently due to the presence of the stabilizing alkyl chains on the surface of the clusters. The same electrochemical measurement showed, however, full redox conductivity in the monolayers of gold nano-cluster stabilized with alkanethiols, 20% of which were terminated with ferrocene. In those cases, redox conductivity is supported by a facile electron hopping (self-exchange rate constant was measured to be ≥ 4.4 × 106 M-1 s-1) between neighboring ferrocene/ferrocenium sites.
| Original language | English |
|---|---|
| Pages (from-to) | 213-223 |
| Number of pages | 11 |
| Journal | Israel Journal of Chemistry |
| Volume | 37 |
| Issue number | 2-3 |
| DOIs | |
| Publication status | Published - 1997 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
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Electron hopping and electronic conductivity in monolayers of alkanethiol-stabilized gold nano-clusters at the air/water interface. / Lee, Wonyong; Hostetler, Michael J.; Murray, Royce W.; Majda, Marcin.
In: Israel Journal of Chemistry, Vol. 37, No. 2-3, 01.01.1997, p. 213-223.Research output: Contribution to journal › Article
TY - JOUR
T1 - Electron hopping and electronic conductivity in monolayers of alkanethiol-stabilized gold nano-clusters at the air/water interface
AU - Lee, Wonyong
AU - Hostetler, Michael J.
AU - Murray, Royce W.
AU - Majda, Marcin
PY - 1997/1/1
Y1 - 1997/1/1
N2 - Morphology of Langmuir monolayers of gold clusters stabilized with a series of alkanethiols was investigated at the air/water interface with Brewster Angle Microscopy which revealed substantial differences depending on the length of the alkyl chains (clusters stabilized with C8 and C16 thiols were investigated). 2D electrochemical measurements carried out with line micro-band electrodes showed negligible electronic conductivity of all monolayers even in their most compressed state, apparently due to the presence of the stabilizing alkyl chains on the surface of the clusters. The same electrochemical measurement showed, however, full redox conductivity in the monolayers of gold nano-cluster stabilized with alkanethiols, 20% of which were terminated with ferrocene. In those cases, redox conductivity is supported by a facile electron hopping (self-exchange rate constant was measured to be ≥ 4.4 × 106 M-1 s-1) between neighboring ferrocene/ferrocenium sites.
AB - Morphology of Langmuir monolayers of gold clusters stabilized with a series of alkanethiols was investigated at the air/water interface with Brewster Angle Microscopy which revealed substantial differences depending on the length of the alkyl chains (clusters stabilized with C8 and C16 thiols were investigated). 2D electrochemical measurements carried out with line micro-band electrodes showed negligible electronic conductivity of all monolayers even in their most compressed state, apparently due to the presence of the stabilizing alkyl chains on the surface of the clusters. The same electrochemical measurement showed, however, full redox conductivity in the monolayers of gold nano-cluster stabilized with alkanethiols, 20% of which were terminated with ferrocene. In those cases, redox conductivity is supported by a facile electron hopping (self-exchange rate constant was measured to be ≥ 4.4 × 106 M-1 s-1) between neighboring ferrocene/ferrocenium sites.
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U2 - 10.1002/ijch.199700025
DO - 10.1002/ijch.199700025
M3 - Article
AN - SCOPUS:0031319956
VL - 37
SP - 213
EP - 223
JO - Israel Journal of Chemistry
JF - Israel Journal of Chemistry
SN - 0021-2148
IS - 2-3
ER -