Table 1. Characteristics of the OECT Sensors Developed in This Worka.
| |
PBS |
human
serum |
||||
|---|---|---|---|---|---|---|
| channel | gate electrode | device configuration | c-NR | (sensitivity) (a.u/M–1) | c-NR | (sensitivity) (a.u./M–1) |
| PEDOT:PSS | Au | w/microfluidic | 22.1 fM | 4.57 | 221 fM | 8.39 |
| w/o microfluidic | 22.1 pM | 3.17 | ||||
| Ag/AgCl | w/microfluidic | 2.21 fM | 6.60 | 2.21 pM | 14.11 | |
| w/o microfluidic | 22.1 pM | 6.11 | ||||
| p(g0T2-g6T2) | Au | w/microfluidic | 221 fM | 11.34 | 2.21 pM | 11.78 |
| w/o microfluidic | 22.1 pM | 5.71 | ||||
| Ag/AgCl | w/microfluidic | 2.21 fM | 12.83 | 2.21 fM | 14.12 | |
| w/o microfluidic | 22.1 pM | 2.53 | ||||
a
The channel was made of either PEDOT:PSS or p(g0T2-g6T2), gated with Au or Ag/AgCl electrodes, and operated in after exposure to PBS or human serum. c-NR values were determined as the minimum concentration for which the sensor gives a higher NR than the maximum NR generated by the negative control. Sensitivity was calculated as the slope of the calibration curve (NR vs aggregate concentration).