Abstract
Amine-functionalized siloxane oligomers were synthesized and used successfully to prepare colloidal Au particles smaller than 1 nm. Using NMR to follow the interaction of Au(THT)Cl with the functionalized siloxane, it was determined that the amine ligands displaced the THT ligand effectively. By comparison with other functionalized siloxane oligomers/compound, parameters such as density of ligating groups, oligomer steric barrier and reduction rates were found to be essential for the formation and stability of subnanometer Au particles. Without further treatment, the formed Au particles were active catalysts for the reduction of p-nitrobenzaldehyde by triethylsilane, forming an imine as the major coupling product. Deposition of the Au colloids onto silica, followed by thermal treatment to remove the organic groups resulted in subnanometer Au on silica, indicating this to be a promising method of fabricating subnanometer supported Au catalyst. This journal is
| Original language | English |
|---|---|
| Pages (from-to) | 1743-1751 |
| Number of pages | 9 |
| Journal | Journal of Materials Chemistry A |
| Volume | 3 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Jan 28 2015 |
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ASJC Scopus subject areas
- Chemistry(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
Cite this
Amine-functionalized siloxane oligomer facilitated synthesis of subnanometer colloidal Au particles. / Wang, Zhen; Beletskiy, Evgeny V.; Lee, Sungsik; Hou, Xianliang; Wu, Yuyang; Li, Tiehu; Kung, Mayfair C.; Kung, Harold H.
In: Journal of Materials Chemistry A, Vol. 3, No. 4, 28.01.2015, p. 1743-1751.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Amine-functionalized siloxane oligomer facilitated synthesis of subnanometer colloidal Au particles
AU - Wang, Zhen
AU - Beletskiy, Evgeny V.
AU - Lee, Sungsik
AU - Hou, Xianliang
AU - Wu, Yuyang
AU - Li, Tiehu
AU - Kung, Mayfair C.
AU - Kung, Harold H
PY - 2015/1/28
Y1 - 2015/1/28
N2 - Amine-functionalized siloxane oligomers were synthesized and used successfully to prepare colloidal Au particles smaller than 1 nm. Using NMR to follow the interaction of Au(THT)Cl with the functionalized siloxane, it was determined that the amine ligands displaced the THT ligand effectively. By comparison with other functionalized siloxane oligomers/compound, parameters such as density of ligating groups, oligomer steric barrier and reduction rates were found to be essential for the formation and stability of subnanometer Au particles. Without further treatment, the formed Au particles were active catalysts for the reduction of p-nitrobenzaldehyde by triethylsilane, forming an imine as the major coupling product. Deposition of the Au colloids onto silica, followed by thermal treatment to remove the organic groups resulted in subnanometer Au on silica, indicating this to be a promising method of fabricating subnanometer supported Au catalyst. This journal is
AB - Amine-functionalized siloxane oligomers were synthesized and used successfully to prepare colloidal Au particles smaller than 1 nm. Using NMR to follow the interaction of Au(THT)Cl with the functionalized siloxane, it was determined that the amine ligands displaced the THT ligand effectively. By comparison with other functionalized siloxane oligomers/compound, parameters such as density of ligating groups, oligomer steric barrier and reduction rates were found to be essential for the formation and stability of subnanometer Au particles. Without further treatment, the formed Au particles were active catalysts for the reduction of p-nitrobenzaldehyde by triethylsilane, forming an imine as the major coupling product. Deposition of the Au colloids onto silica, followed by thermal treatment to remove the organic groups resulted in subnanometer Au on silica, indicating this to be a promising method of fabricating subnanometer supported Au catalyst. This journal is
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U2 - 10.1039/c4ta05954a
DO - 10.1039/c4ta05954a
M3 - Article
VL - 3
SP - 1743
EP - 1751
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 4
ER -