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Synthesis of Stair-Stepped Polymers Containing Dibenz[a,h]anthracene Subunits

Polycyclic aromatic monomers based on substituted dibenz[a,h]anthracene frameworks have been prepared in high yields. From these, several fluorescent stair-stepped conjugated polymers containing fused aromatic subunits have been synthesized via Sonogashira polycondensations and Glaser-type oxidative couplings. The new polymers were characterized by NMR spectroscopy, gel-permeation chromatography (GPC), UV−vis, and fluorescence spectroscopy.