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Citation: Hou Shi-Feng, Yang Ke-Sheng, Fang Hui-Qun, Chen Hong-Yuan. Electron Transfer Mechanism Characteristics of 2,3,5,6-tetrachloride-quinone Anchored on the Self-assembled Monolayers of Dithiol[J]. Acta Physico-Chimica Sinica, ;1998, 14(07): 640-644. doi: 10.3866/PKU.WHXB19980713 shu

Electron Transfer Mechanism Characteristics of 2,3,5,6-tetrachloride-quinone Anchored on the Self-assembled Monolayers of Dithiol

1.
Department of Chemistry,Nanjing University,Nanjing 210093

Received Date: 22 September 1997
Available Online: 15 July 1998

2,3,5,6-Tetrachloride-quinone was anchored to a ld surface through the self-assembled monolayers of dithiol [DT HS-(CH2)n-SH n=2,4,6,8,10]. The surface coverage of the anchored TQ was esteminated to be 4.9 ×10-11 mol•cm-2. The electron transfer rate constant Ket associated with the redox process of anchored film decreased from 6.75 s-1 at n=2 to 0.169 s-1 at n=10 with increasing the chain length of the DT SAMs througth the redox potential of TQ. The turning barrier coefficient(β) of the electron transfer was estimated to be 0.82Å-1 from the observed linear relationship between the Ket and the monolayer chain length.
- 2,3,5,6-Tetrachlorde-Quinone,
- Dithiol,
- Self-assembled monolayers,
- Electron transfer rate constant(Ket)
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