A. Tracz et al., CONDUCTIVE POLYMER-FILMS BY RETICULATE DOPING WITH MIXED-VALENCE POLYIODIDES - COMPARISON OF 3 METHODS OF PREPARATION, Journal of physics. D, Applied physics, 26(4), 1993, pp. 680-685
A new class of organic conductors, mixed valence DIPSPHI4 polyiodides,
have been used as conductive additives in reticulate doping of polyme
rs. Conductive films have been prepared using three modifications of t
he reticulate doping technique: a standard one-step method (direct cas
ting), a two-step method consisting of swelling the film containing mo
lecularly dispersed DIPSPHI4 polyiodides, and a recently developed met
hod in which oxidation of molecularly dispersed DIPSPHI4 and simultane
ous crystallization of its polyiodides in situ is induced by treatment
of the pristine film containing the donor with I2/CH2Cl2 vapours. The
first and the third methods have been found to be the most advantageo
us. Conductive films with additive concentrations as low as 0.5 wt% an
d conductivities of the order of 10(-3) S cm-1 were obtained. In all t
hree methods, the best results have been obtained when the conductive
network consisted of the most conducting DIPSPHI4, 2.281 salt.