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. 2019 Aug 22;11(9):1379. doi: 10.3390/polym11091379

Table 1.

Optical data of C1b and C2b in solution and as neat and dispersed samples.

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.