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|
| Type |
Oral Presentation |
| Area |
Oral Presentation of Young Scholars in Electrochemistry |
| Room No. |
Room 320 |
| Time |
THU 09:00-: |
| Code |
ELEC.O-1 |
| Subject |
Effect of metal doping in the electronic structures of
M2Au36(SC6H13)24 (M=Pt, Pd)
|
| Authors |
Minseok Kim, Dongil Lee*
Department of Chemistry, Yonsei University, Korea
|
| Abstract |
Over the past decade, owing to their unique electronic structures with high chemical and thermodynamic stability, thiolate ligand-protected gold nanoclusters have been extensively studied. Recently, bimetallic gold nanoclusters have been reported, which represents a viable strategy to study the sensitivity of physical-chemical properties of the nanoclusters towards replacement of a single or few gold atoms by other metals. In particular, bimetallic MxAu38-x(SR)24 nanoclusters (M=Pd or Ag, SR=thiolate ligand) have been studied recently due to their different optical and electrochemical properties. In this poster, we report the stable bimetallic clusters ([Pd2Au36(SR)24]0 and [Pt2Au36(SR)24]2-) which showed different electronic configurations, by replacing the core Au atom with Pd and Pt. The highest occupied molecular orbital-lowest unoccupied molecular gap of [Pd2Au36(SR)24]0 determined by voltammetry was drastically decreased to 0.26 eV, but that of [Pt2Au36(SR)24]2- was comparable with [Au38(SR)24]0 (0.94 eV), indicating the electronic structures could be altered upon doping of the foreign metal. This result could be illustrated by their different electron configurations, that is [Pd2Au36(SR)24]0 cluster which has 12 electron exhibits remarkably different optical and electrochemical properties from those of the 14 electron [Au38(SR)24]0 and [Pt2Au36(SR)24]2-. |
| E-mail |
kabaliero05@naver.com |
|
122nd General Meeting of the KCS