Table 2 Photophysical properties of Ce-dtuR4 (R = Me, Et, iPr, and Cy) complexes in solid-powder state and PhMe solution (10−3 M) at 293 K
From: Lanthanide cerium(III) complex with deep-red emission beyond 700 nm
Ce-dtuR4 | State | PL Maximab [nm] | PLQY [%] | τd [ns] | FWHMs [nm] (103 cm−1) | krd [106 s−1] | knrd [106 s−1] |
|---|---|---|---|---|---|---|---|
R = Mea | Powder | 640 (639, 738) | 22 | 37 | 184 (4.08) | 5.9 | 21 |
R = Etc | Powder | 670 (630, 725) | - | - | 201 (4.22) | - | - |
PhMe solution | 725 (684, 758) | 1 | 3.3 | 244 (3.78) | 3 | 300 | |
R = iPr | Powder | 725 (702, 780) | 20 | 44 | 203 (3.68) | 4.5 | 18 |
PhMe solution | 725 (688, 762) | 17 | 43 | 197 (3.62) | 4.0 | 19 | |
R = Cy | Powder | 725 (710, 792) | 31 | 53 | 190 (3.46) | 5.8 | 13 |
PhMe solution | 725 (695, 769) | 27 | 57 | 201 (3.63) | 4.7 | 13 |
