POLYPARACYCLOPHANES - POLYMERS WITH PI-ELECTRONS DELOCALIZED ALONG PENDANT GROUP STACKS

Recently developed photoconductive polymer systems, polyparacyclophane s doped with low-molecular-weight accepters, combine high charge carri er mobility provided by extended pi-electron systems along cofacially arrayed aromatic rings, with effective photogeneration in visible rang e due to formation of charge-transfer complexes with the dopants. In a series of polyparacyclophane complexed with different benzoquinones i t was found that the photoconductivity gain coefficient in the visible range increases with increasing electron affinity of the dopant and t hat the gain coefficient is higher for higher dopant concentration. Th e influence of the charge-transfer complex formation between various p olyparacyclophanes and various accepters on the charge carrier generat ion both in tile dark and under illumination is discussed.