7, 7, 8, 8-Tetracyanoquinodimethane anion radical salts (CQ salts) of polycations having dimethylammonium, piperadinium or morpholinium sites in polymer matrix, such as
were prepared. One the basis of their specific resistances (p) and activation energies of conduction (Ea), the influences of N-substitution groups at ammonium sites upon the electronic conduction were discussed.
Simple salts of XX-CQ, PX-CQ and MX-CQ indicated p values of 1.4 10 10, 1.8 10 10 and 6.5 10 8, cm, respectively and the minimum p values of complex salts were 4.6 10 2, 4.8 10 8and 2.0 10 2, cm, respectively. The p- and Ea-values of XX-CQ were reduced more remarkably than those of PX-CQ by doping of neutral CQ (CQO). This result suggests that piperadine ring influenced the packing of CQ0 considerably.
In MX-CQ, the p-value of its simple salt is very low and the reduction of p by doping is very small. The oxygen atom in morpholine ring is assumed to contribute significantly to the electronic conduction, so that the reduction of p is disturbed by preventing morpholine ring from the arrangement of CQ0.