Table 4. UV-visible absorption and emission data of [IrIII(por)Cl(CO)] and 1–4.
| Complex | UV-vis absorption data
a
|
Emission data
a
|
||
|
λ
max nm–1 (log ε) |
Solution at 298 K |
|||
| λ max/nm (τ/μs) | Φ em [×10–2] | |||
| [IrIII(ttp)Cl(CO)] | 309 (4.50), 422 (5.58), 533 (4.41), 567 (3.89) | 724 (47.2), 808 (sh) | 0.16 | |
| [IrIII(tmp)Cl(CO)] | 311 (4.43), 422 (5.58), 533 (4.42), 564 (3.60) | 721 (77.2), 800 (sh) | 0.22 | |
| [IrIII(oep)Cl(CO)] | 342 (4.44), 403 (5.38), 518 (4.30), 549 (4.62) | 666 (83.3), 722 (sh) | 5.03 | |
| [IrIII(F20tpp)Cl(CO)] | 329 (4.40), 414 (5.42), 526 (4.45), 557 (3.94) | 676 (101.0), 746 (sh) | 2.92 | |
| [IrIII(tmp)(IMe)Cl] | 1a | 345 (sh) (4.29), 368 (4.56), 431 (5.18), 542 (4.06), 593 (3.40) | 773 (1.8) | 0.05 |
| [IrIII(tmp)(BIMe)Cl] | 1b | 301 (4.55), 367 (4.61), 431 (5.23), 545 (4.13), 592 (3.92) | 775 (2.3) | 0.06 |
| [IrIII(F20tpp)(IMe)Cl] | 1c | 346 (sh) (4.44), 371 (4.62), 426 (5.10), 533 (4.12) | — b | — b |
| [IrIII(F20tpp)(BIMe)Cl] | 1d | 296 (4.41), 346 (sh) (4.39), 369 (4.55), 426 (5.10), 535 (4.12) | 729 (1.7), 811 (sh) | 0.29 |
| [IrIII(ttp)(IMe)2]+ | 2a | 374 (4.76), 438 (5.12), 547 (3.87), 620 (3.82) (br) c | Nonemissive | — |
| [IrIII(ttp)(BIMe)2]+ | 2b | 297 (4.63), 372 (4.63), 437 (4.99), 564 (3.85) (br) d , 611 (3.87) (br) c | Nonemissive | — |
| [IrIII(oep)(IMe)2]+ | 2c | 351 (sh) (4.52), 372 (4.86), 429 (4.89), 532 (4.10), 556 (4.01) | 701 (2.7), 766 (sh) | 0.41 |
| [IrIII(oep)(BIMe)2]+ | 2d | 297 (4.42), 373, (4.76), 428 (4.82), 533 (4.03), 557 (3.95) | 701 (3.6), 765 (sh) | 0.66 |
| [IrIII(oep)(IiPr)2]+ | 2e | 353 (sh) (4.49), 375 (4.82), 432 (4.82), 537 (4.09), 560 (4.02) | 701 (1.9), 763 (sh) | 0.03 |
| [IrIII(F20tpp)(IMe)2]+ | 2f d | 355 (sh) (4.63), 374 (4.89), 418 (sh) (4.72), 440 (5.00), 537 (4.13) | 754 (0.5), 829 (sh) | 0.08 |
| [IrIII(oep)(CNPhOMe)2]+ | 3 | 266 (4.70), 344(sh) (4.36), 395 (5.20), 515 (4.17), 547 (4.50) | 663 (124.7), 717(sh) | 6.40 |
| [IrIII(oep)(py)2]+ | 4 | 388 (5.25), 507 (4.11), 539 (4.54) | 651(55.2), 711(sh) | 12.30 |
aMeasurements were performed in degassed CHCl3.
bComplex 1d was unstable for emission measurements.
cBroad absorption band spans from ca. 510 to 670 nm.
dMeasurements were performed in degassed CH2Cl2.