Table 1. Photophysical Properties of Biluminescent Systems at Room Temperature.
| τ́F (ns)d | τ́P (ms)e | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| systema | Fmax (nm)b | Pmax (nm)c | N2 | air | N2 | air | PLQY (%)f | PLQYF (%)g | PLQYP (%)h | IF,N2/IF,O2 (%)i | ITOTAL,N2/ITOTAL,O2j |
| [PMMA:NPB]sc | 425 | 540 | 2.6 | 2.6 | 322.6 | 10.4 | 26 ± 3 | 23.1 | 2.6 | 77 | 0.81 |
| [TCTA:NPB]sc | 440 | 540 | 3.4 | 3.4 | 95.6 | 10.1 | 31 ± 8 | 30.4 | 0.4 | 96 | 0.96 |
| [TCTA:NPB]evap | 430 | 540 | 2.0 | 2.3 | 53.8 | 7.1 | 32 ± 3 | 31.6 | 0.2 | 98 | 0.99 |
a
Data for systems in which NPB is diluted at 2 wt % in the host matrix.
b
Measured fluorescence emission maxima.
c
Measured phosphorescence emission maxima.
d
Fitted (biexponential, average weighted) fluorescence lifetimes.
e
Fitted (biexponential, average weighted) phosphorescence lifetimes.
f
Photoluminescence quantum yield.
g
Fluorescence quantum yield.
h
Phosphorescence quantum yield (cf. Figure S5 for details of PLQY determination).
i
Nitrogen-to-air fluorescence intensity maxima ratio.
j
Nitrogen-to-air total integrated intensity ratio.