Table 1.
Binding constants (K, M−1)a obtained from fluorescence titration.
| Anionb | Oxalate | Citrate | Malonate | Acetate | Pi | PPi | F− | |
|---|---|---|---|---|---|---|---|---|
| K11 | K21 | |||||||
| 1 | (7.1 ± 0.5) × 104 | (1.1 ± 0.1) × 104 | (4.2 ± 0.8) × 103 | N.D.c | (1.6 ± 0.1) × 105 | (3.0 ± 0.1) × 104 | N.D.c | >106 |
| 2 | (1.1 ± 0.1) × 105 | N.D.c | (8.2 ± 1.0) × 104 | (1.3 ± 0.2) × 105 | <103 | > 108 | N.D.c | >106 |
a
Binding constants were calculated using the change in fluorescence titrations at 25°C.
b
Small response was observed for the addition of Cl−, Br−, and I−. Thus, the K values could not be calculated.
c
The K value could not be calculated due to sigmoidal responses.