Table 1.
Sample | λabs.sol (nm) a |
λem.sol (nm) b |
PLQY% c | Solvent | λabs.film (nm) d |
λem.film (nm) e |
PLQY% f | Matrix f |
---|---|---|---|---|---|---|---|---|
C1b | 369 | 533 | 5.00 ± 0.02 | Chloroform | (403)474 j | 613 j | 25 ± 1 j | neat j |
373 | 529 | THF | 470 jj | 566 jj | 30 ± 1 jj | PS jj | ||
396 | 523 | NMP | 460 jjj | 566 ijjj | 88 ± 5 jjj | PVK jjj | ||
- | - | - | 460 jv | 571 jv | 50 ± 5 jv | PDLC jv | ||
C2b | 420 | 534 | 3.00 ± 0.02 | Chloroform | 446 j | 613 j | 22 ± 1 j | neat j |
422 | 512 | THF | 429 jj | 566 jj | 10 ± 2 jj | PS jj | ||
430 | 511 | NMP | 429 jjj | 566 ijjj | 21 ± 2 jjj | PVK jjj | ||
- | - | - | 414 jv | 571 jv | 41 ± 5 jv | PDLC jv |
a Wavelength of UV-Visible absorbance maxima in solution; b Wavelength of emission maxima in solution; c Photoluminescence quantum yield (PLQY) in chloroform solution measured by relative methods using as standard quinine sulfate; d Wavelength of UV-Visible absorbance maxima on thin film; e wavelength of emission maxima on thin film; f PL quantum yield on thin film; j neat sample; jj sample dispersed in PS 10% by weight; jjj sample dispersed in PVK at 10% by weight; jv sample dispersed in QYPDLC-102 nematic polymer at 1% by weight. Less intense maxima in brackets.