AbstractBased on a previous work the polymerization mechanism of anthracene was studied and it was found that the initial reaction step is represented by the formation of a radical ion. Poly(9,10‐anthrylene) was prepared in order to study the relevant properties with respect to its technological applicability. Pure poly(9,10‐anthrylene)s even of relatively low molecular weight (about 3 000) are infusable and nearly insoluble. Poly(9,10‐anthrylene)s show good photocondu