Synthesis and chemical modification of new luminescent substituted poly(p-phenylene) polymers

摘要

A new acyl-functionalized poly(p-phenylene) (Ac-PPP) was synthesized by Yamamoto cross-coupling and chemically modified to obtain an anthracene-containing derivative (An-PPP). The chemical structures of the polymers were confirmed by ~1H-NMR, ~(13)C-NMR, and FTIR spectroscopic analysis. They are fully soluble in common organic solvents and have number-average molecular weight of 2.70 × 10 ~3 and 5.26 × 10 ~3 g mol ~(-1) for Ac-PPP and An-PPP, respectively. The optical properties of the polymers were investigated by UV-visible absorption and photoluminescence spectroscopies. A green emission was observed in Ac-PPP solid thin film and a yellow one in the anthracene-containing polymer An-PPP. The optical bandgap values were 3.21 and 3.08 eV for Ac-PPP and An-PPP, respectively.