Table 1. Summary of Photophysical and Electrochemical Properties of Dyes (1)–(7)e.
| dye | (1) | (2) | (3) | (4) | (5) | (6) | (7) |
|---|---|---|---|---|---|---|---|
| λex (nm)a | 500 | 496 | 500 | 501 | 504 | 504 | 510 |
| ε(cm–1·M–1)a | 93660 | 83200 | 71100 | 85800 | 58600 | 78900 | 107900 |
| λem (nm)a | 525 | 519 | 524 | 527 | 529 | 530 | 544 |
| Φfa,b | 0.95 | 0.04 | 0.72 | 0.87 | 0.77 | >0.95 | <0.01 |
| E1/2redb (V/SCE) | –1.20 (−1.17) | –1.06 | –0.91 | –0.90 | –0.98 | –0.80 | –0.70 |
| E0,0T1 (eV)c | 2.05 | 2.07 | 2.04 | 2.03 | 2.03 | 2.03 | 1.97 |
| ΔGPET (eV)d | –0.13 | –0.29 | –0.43 | –0.42 | –0.33 | –0.51 | –0.55 |
a
Data were measured in ethanol containing 1 mM NaOH.49
b
Data were measured in an aqueous ethanolic solution (water/ethanol = 90:10, v/v) containing 10 μM NaOH.
c
The literature value of (1) was −1.17 V/SCE.27
d
Calculated values based on the literature.50
e
ΔGPET = −[E*red(dye*/dye·-)–Eox(TEOA·+/TEOA)], E*red(dye*/dye·) = Ered(dye/dye·-) + E0,0T1, and Eox(TEOA ·+/ TEOA) = 0.72 eV.51