Synthesis and Electronic Properties of Length-Defined 9,10-Anthrylene–Butadiynylene Oligomers

Linear
π-conjugated oligomers consisting of anthracene and
diacetylene units were readily synthesized by a one-pot process that
involved desilylation and oxidative coupling from appropriate building
units. We were able to isolate length-defined oligomers ranging from
2-mer to 6-mer as stable and soluble solids. The bathochromic shifts
in the UV–vis spectra suggested that the π-conjugation
was extended with elongation of the linear chain. Cyclic voltammetric
measurements showed characteristic reversible oxidation waves that
were dependent on the number of anthracene units.