We show the versatile synthesis of four tribenzopentaphene derivatives bearing alkyl
side chains at three different positions. Substitutions on two of these positions
led to subtle intensity changes at the lines of the blue emission, whereas alkylation
in the bay region led to dimerization of the pentaphene derivative, resulting in a
distortion of the chromophore geometry and an emission shift to green.
Key words
fused-ring systems - cross-coupling - Diels–Alder reaction - cyclodehydrogenation
- polycycles