B. Neumann et al., LIQUID-CRYSTALLINE MACROCYCLES - NOVEL GLASS-FORMING NEMATIC MATERIALS THAT CAN UNDERGO CHARGE-TRANSFER INDUCED PHASE-TRANSITIONS, Advanced materials, 9(3), 1997, pp. 241
Macrocylic liquid crystals incorporating two different rigid cores are
reported for the first time. The synthesis of polyethercyclophanes su
ch as that shown in the Figure is described, together with their phase
behavior as investigated by differential scanning calorimetry and pol
arizing microscopy. The synthesis of macrocycles that combine non-iden
tical building blocks is desirable in order to obtain materials with t
ailor-made properties.