The resulting yellow coloured complex was extracted in chloroform and showed absorption maxima at 340 nm.
Probe 1 showed absorption at 451 nm and a strong fluorescence emission at 537 nm (ΦF=0.33).
Ultraviolet light (UV -visible light absorption spectra of PMHT–NB showed absorption peaks at wavelengths 254, 289, and 600 nm, sUV -visibleuccessfulightorporabsorptionP and NB groupspectra
After activation, the sample showed absorption manifested through the appearance of a broad peak with an NMR shift of −141 ppm.
UV vis spectra showed absorption bands at λmax = 226 and 423 nm for poly1 and poly2, ascribed to transitions of side groups and polythiophene backbone, respectively.
The DMF soluble part of 1b, 1c and 2b showed absorption peaks at about 458, 465 and 388 nm, respectively, in DMF.
The UV/Vis spectra of polymerization solution showed absorption peaks at 325 and 434 nm, which are characteristic for PANI emeraldine base.
According to the UV vis spectra of films, PBDT-O-DTPO and PBDT-T-DTPO showed absorption onsets of 656 and 675 nm, correspond to optical band gaps of 1.89 and 1.84 eV, respectively.
The UV spectrum showed absorption maxima characteristic of an indolenine chromophore (269, 223, 207 nm) [34].
The SS/SF blend nanofibers showed absorption bands at 837, 801, and 720 cm-1.
The IR spectrum showed absorption bands at 3441 (hydroxyl) and 1724, 1663 carbonylrbonyl groups).
