Table 1.
Photophysical properties and electrochemical data of RBT1, RBT2, and RBT3 complexes.
| Complex | λ abs/nm (ε × 103/M−1 cm−1)a | λ em/(nm)b | E pa/Vc | E 1/2/Vc | ||||
|---|---|---|---|---|---|---|---|---|
| RBT1 | 364 (15.1) | 383 (19.4) | 405 (17.4) | 486 (5.3) | 554 (1.9), 916 (1.1), 1012 (0.9) | 681 (932)i | 0.30, 0.57, 0.85, 1.13 | −0.25, −0.54 |
|
| ||||||||
| RBT2 | 364 (20.6) | 383 (28.7) | 404 (27.8) | 484 (9.5) | 554 (2.5), 916 (1.3), 1012 (1.2) | 743 (754)i | 0.28, 0.71 | −0.21, −0.46, −0.69 |
|
| ||||||||
| RBT3 | 360 (39.7) | 380 (49.4) | 402 (45.9) | 481 (9.1) | 554 (4.0), 916 (1.8), 1012 (2.2) | 743 (754)i | 0.73, 0.99 | −0.90 |
a,b(CH3Cl/MeOH, 1 : 1, v/v), cfreshly distilled DMF containing 0.1 M TBABF4 supporting electrolyte, iemission intensity.