Synthesis and photophysical properties of conjugated anthracene-based compounds

Abstract Four novel diarylanthracene derivatives ( 1 , 5a , 5b , 6 ) have been synthesized by Suzuki and Sonogashira coupling reactions, characterized and their structure assigned by 1 H and 13 C NMR spectroscopy. The spectral and photophysical properties of a series of symmetrically and asymmetrically disubstituted anthracene-based compounds ( 1 – 6 ) and of benzothiadiazole derivative 7 have been studied. All these photostable systems show high fluorescence emission and a batochromic shift of the absorption spectrum that increase with π-conjugation. Flash photolysis measurements were carried out on the poor fluorescent compound 4 .