| Autor: |
Hyunjin Jeon, Youngeun Kwon, Deokho Jung |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Journal of Electroanalytical Chemistry. :41-46 |
| ISSN: |
1572-6657 |
| DOI: |
10.1016/j.jelechem.2014.03.001 |
| Popis: |
Electrochemical approaches provide useful tools for studying interfacial reactions. Interfacial reactions are often controlled by various factors in a different manner from that of bulk reactions. Understanding these differences is important for many applications. Particularly, the acid–base properties play a significant role in determining the characteristics of the surface and the reactions that take place on the surface. We investigated how the protonation and deprotonation of the surface-confined acid affected the interfacial Diels–Alder reaction occurring on gold electrode using cyclic voltammetry. The rate of Diels–Alder reaction showed a negative correlation to the extent of surface ionization, showing a response similar to a titration curve. The half maximum rate was observed at pH 7, which agreed with the pKa of surface-confined carboxylic acid. Subsequent investigation suggested that this dependence is likely due to the direct interaction of H-bonding between quinone and the surface-confined acid rather than the field effect. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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