Table 1.
Photophysical properties of FC6-BP-PXZ and FC6-2BP-PXZ.
| Solutiona | Neat filmb | |||||||
|---|---|---|---|---|---|---|---|---|
| λabs(nm) | λem(nm) | ΦFc (%) | λem (nm) | ΦFc (%) | τpromptd (ns) | τdelayedd (μs) | ΔESTe(eV) | |
| FC6-BP-PXZ | 317 | 543 | 3.5 | 544 | 32.0 | 20.7 | 0.7 | 0.017 |
| FC6-2BP-PXZ | 330 | 550 | 2.0 | 567 | 17.0 | 29.0 | 2.1 | 0.068 |
a
In THF solution (10−5 M) at room temperature.
b
Spin-coated on a quartz substrate.
c
Absolute fluorescence quantum yield determined by a calibrated integrating sphere under nitrogen at room temperature.
d
PL lifetimes of prompt (τprompt) and delayed (τdelayed) decay components evaluated at 300 K under vacuum.
e
Estimated from the high-energy onsets of fluorescence and phosphorescence spectra at 77 K.