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Luminescence lifetimes and calculated hydration numbers for Eu complexes
| τH2O (ms) | τD2O (ms) | q | |
|---|---|---|---|
| [Eu(L1)] | 0.464 | 0.984 | 0.98 |
| [Eu(L2)] | 0.465 | 0.959 | 0.94 |
| [Eu(L3)] | 0.464 | 1.129 | 1.13 |
| [Eu(L4)] | 0.977 | 1.581 | 0.17 |
| [Eu(L5)] | 0.944 | 1.625 | 0.23 |
| [Eu(L6)] | - | - | 1a |
Data could not be obtained due to low solubility of [Eu(L6)]. q = 1 is assumed based on a similar relaxivity of [Gd(L6)] to [Gd(L3)].
