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Citation: Zhao Jian-Wei, Yu Hua-Zhong, Wang Yong-Qiang, Zhang Hao-Li, Liu Zhong-Fan. Structure-Dependent Electron Transfer Kinetics of Azobenzene Self-Assembled Monolayers on ld[J]. Acta Physico-Chimica Sinica, ;1997, 13(01): 42-47. doi: 10.3866/PKU.WHXB19970108 shu

Structure-Dependent Electron Transfer Kinetics of Azobenzene Self-Assembled Monolayers on ld

1.
Certer for Intelligent Materials Research(CIMR),College of Chemistry and Molecular Engineering,Peking University,Beijing 100871

Received Date: 19 July 1996
Available Online: 15 January 1997

The self-assembling process and electrochemical behavior of (4-ethoxy-4'-N-(2"-mercaptoethyl) aminocarbonyl-azobenzene monolayer on ld were investigated by cyclic voltammetry and contact angle measurements. The apparent electron transfer rate constant ks was found to decrease with increasing the surface coverage. Taking account of the structural change associated with the reduction/oxidation process of azobenzene to hydrazobenzene, the unique decrease of apparent electron-transfer rate constants could be well understood by the inhibition on such a molecular structure change of close packing film structure, which may lead to an increase of activation free energy for the reduction/oxidation process.
- Self-assembled monolayers(SAM),
- Azobenzene derivative,
- Highly organized molecular system,
- Apparent electron-transfer rate eonstant
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