Research Article
Protein Detection with Potentiometric Aptasensors: A Comparative Study between Polyaniline and Single-Walled Carbon Nanotubes Transducers
Table 1
Calculated surface charge and ligand density values with the corresponding standard deviations (
).
| | | (cm2) | (C) | ΓRU (mol/cm2) | ΓTBA (molecule/cm2) | at sensor surface |
| | PANI | 11.27 | 5.63 × 10−06 | 5.18 × 10−12 | 6.23 × 10+11 | 7.03 × 10+12 | | SWCNT | 164.29 | 8.21 × 10−05 | 5.19 × 10−12 | 6.24 × 10+11 | 1.03 × 10+14 | | PANI St. dev. | 2.16 | 1.08 × 10−06 | 9.94 × 10−13 | 1.20 × 10+11 | 1.00 × 10+12 | | SWCNT St. dev. | 25.7 | 1.29 × 10−06 | 8.11 × 10−13 | 9.77 × 10+10 | 1.60 × 10+13 |
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