Synthesis and optical properties of some novel arylene‐alkynylene polymers

The synthesis and the optical properties of the novel aryleneethynylenes ( 7 , 8 ) and arylenebutadiynylenes ( 10 , 11 ) using either a Heck‐type or a Hay‐type coupling are reported. The route reported here also makes meta ‐linked arylene‐alkynylenes accessible. The number‐average degree of polymerization of the obtained polymers is between 13 and 60. Some of the materials show promising optical properties (photoluminescence).