Heterogeneous electron-transfer kinetics for PQQ covalently attached to aminoalkanethiol monolayers on gold.

@article{Park2009HeterogeneousEK,
  title={Heterogeneous electron-transfer kinetics for PQQ covalently attached to aminoalkanethiol monolayers on gold.},
  author={Wonchoul Park and Jalal Ahmed and Sunghyun Kim},
  journal={Colloids and surfaces. B, Biointerfaces},
  year={2009},
  volume={68 1},
  pages={120-4}
}
Pyrroloquinoline quinone (PQQ) was covalently attached to a gold electrode surface via the self-assembled monolayers of aminoalkanethiols (NH2)(CH2)nSH) with different alkyl chain lengths (n=2, 6, 8, and 11). The voltammetric behaviors of PQQ-SAMs both at full and at partial monolayers were examined. It was found that the redox response of PQQ became more reversible with increasing dilution by alkanethiols owing to the less lateral interaction between PQQ heads. Voltammograms were transformed… CONTINUE READING

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