Abstract
Dibenzo crown ether-substituted units of fluorene and acene-bearing copolymers have been successfully synthesized. FTIR, 1H and 13C NMR spectroscopy, DSC, TGA and GPC were used to characterize the resulting copolymers (P1–P5). With fascinating quantum yield, the polymers showed large band gaps. With a polydispersity index of 1.58–2.21, these polymers showed a higher molecular weight (16,080–20,480). Strong thermal stability was indicated by DSC and TGA studies. The cyclic voltammetry analysis found that these polyfluorenes were stable in the range of 0.43–0.53 eV under redox conditions with HOMO and LUMO. For light-emitting materials, thermal stability and emission studies display strong results that are desirable.
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