Ferrocenyldithiophosphonate Containing Conducting Polymers and Theirs Electrochromic Application

In this study, a new ferrocenyldithiophosphonate functionalized; [O-1-(4-phenyl)-1H-pyrrole ferrocenyldithiophosphonate (TPFc)] monomer and its conductive copolymers with pyrrole and 4-(2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)butane-1-amine were synthesized, characterized and their electrochromic properties were investigated. The spectroelectrochemical analyses demonstrated that the copolymer films reveal a reversible cycling with distinctive color changes in their reduced/oxidized forms. For the copolymer films P(TPFc-co-Py)/DCM, P(TPFc-co-Py)/CH3CN and P(TPFc-co-TPA)/DCM, the maximum optical contrasts (Delta T %) were measured as 28, 12 and 27 % at 800, 900 and 900 nm, respectively. Spectroelectrochemical analysis also revealed that all copolymers prepared with TPFc have lower band gaps compared to those of corresponding polymers.