Photochromism and electrical transport characteristics of a dyad and a polymer with diarylethene and quinoline units

The synthesis of a series of photochromic compounds incorporating a phenylquinoline unit and the photophysical and electric transport properties are described. The dyad and polymer with a quinoline unit show a high quantum yield due to the enforced antiparallel conformation of the dithienylethene moieties. High carrier conductivity was observed in the closed form of the diarylethene with a phenylquinoline unit.