Table 2. Photophysical Properties of the Copolymers Measured in Dilute Toluene and DCB Solutions (λabsmax, Absorption Maximum; λPLmax, Emission Maximum; λPLexcmax, Maximum of the Excitation Spectrum; ηPL, Photoluminescence Quantum Yield; Primary Maxima in Bold).
material | solvent | λabsmax (nm) | λPLmaxa (nm) | λPLexcmaxb (nm) | ηPL |
---|---|---|---|---|---|
P1 | toluene | 363sh, 429, 487 sh, 569 | 502, 612 | 349, 550 | – |
P1 | DCB | 433, 607 | – | – | – |
P2 | toluene | 333, 451, 478 | 519, 554 | 332, 447, 478 | 0.47c |
P2 | DCB | 332, 492 (523) | 533, 589 | 337, 484, 530 | 0.54d |
P3 | toluene | 334, 450, 479 | 520, 551 | 332, 450, 480 | 0.47c |
P3 | DCB | 334, 455, 483 | 533 | 334, 451, 484 | 0.53c |
SM | toluene | 327, 400, 447, 477 | 488, 518 | 334, 396, 447, 477 | 0.92c |
SM | DCB | 332, 405, 450, 480 | 499 | 331, 405, 449, 480 | 0.95c |
Excitation wavelength at λabsmax;
Emission wavelength at λPLmax,
Fluorescein used as the standard.
Rhodamine 6G used as the standard.