Table 1. Optical Properties and Electrochemical Properties for o-CbzBiz, m-CbzBiz, and p-CbzBiz.
| host | Tm/Tg/Td [oC] | λabsa [nm] | λema [nm] | λphosb [nm] | PLQY [%] | HOMO/LUMOc [eV] | Egd [eV] | ETe [eV] |
|---|---|---|---|---|---|---|---|---|
| o-CbzBiz | 273/167/371 | 294, 310 | 380 | 491 | 36 | –5.73/–2.17 | 3.56 | 2.66 |
| m-CbzBiz | 326/na/377 | 293, 312 | 380 | 526 | 12 | –5.74/–2.20 | 3.54 | 2.48 |
| p-CbzBiz | 296/115/393 | 294, 327 | 400 | 526 | 88 | –5.73/–2.36 | 3.37 | 2.45 |
Measured in toluene at room temperature.
Measured in toluene at 77 K.
Determined by cyclic voltammetry and the onset of the absorption band.
The optical band gap, determined by the onset of the absorption band.
Calculated by the highest-energy vibronic transition of the phosphorescence spectra measured at 77 K.