Communication: Conjugated polymers, for example PPV and polythiophene,
show great potential for applications in thin-film microelectronic an
d optoelectronic devices. An understanding of structure-property relat
ionships in these materials is therefore of great importance. Here, th
e successful preparation of two novel substituted five-ring oligo-PPVs
and the first crystallographic characterization of a single-crystal a
ll-trans PPV oligomer are reported.