Table 1 Comparison of Limits of detection and binding constants of receptors RB-1 to RB-3 with other reported sensors.

⁵⁵

4.48 × 10³

9.08 × 10⁻⁵

⁵⁶

4.92 × 10⁴

23.33 × 10^–6

⁵⁷

–

1 × 10⁻⁴

⁵⁸

1.93 × 10⁴

20.5 × 10⁻⁶

⁵⁹

1.39 × 10⁴

22.54 × 10⁻⁶

This work

1.53 × 10⁴

7.30 × 10⁴

1.11 × 10⁴

9.60 × 10⁻⁶

12.70 × 10⁻⁶

12.05 × 10⁻⁶