Table 3.
Comparison of performance between the DNA biosensor reported here with other biosensors using different ferrocene and non-ferrocene based compounds as an indication of hybridisation.
| DNA electrode materials | DNA label | Linear range (µM) | LOD (µM) | References |
|---|---|---|---|---|
| SPE/AuNPs/SiNSs | HexaFc complex | 1 × 10−6–1 × 10−3 | 4.83 × 10−8 | This work |
| Fc-acid-OMPA | Ferrocene oligomer | 1.0 × 10−9–1.0 × 10−4 | 2.0 × 10−9 | 9 |
| Graphene | Tetraferrocene | 2.0 × 10−8–2.0 × 10−3 | 8.2 × 10−9 | 10 |
| Gold nanoparticles-DNA bioconjugate | Methylene blue | 7.35 × 10−3–3.68 × 10−1 | 4.26 × 10−2 | 43 |
| SPE/AuNP/NBA-NAS | Ruthenium(II) complex | 1.0 × 10−7–1.0 × 10−2 | – | 44 |
| Graphene biochips | Ruthenium hexamine | – | 6.89 | 45 |
| Disposable electrochemical printed chips | Hoechst 33258 | – | 1.34 | 42 |