Photochromic oligothiophene substituted chromenes a new approach towards a molecular switch: electrical characterisation

摘要

We present a new approach for the relisation of molecular photo-switch, based on photochrochromic ligothiophene-substituted chromenes. When optically excited, these compounds undergo a structural change passing from a neutral state (closed form) to a strongly polarized one (open form). This photochromic process is accompanied by a deep changes in the electrical characterisation.