Moessbauer Spectroscopy of FeCl3-Doped Poly(p-Phenylenevinylene) and of I2-Doped Poly(2,5-Thienylenevinylene)

Abstract

Mossbauer spectra of FeCh-doped poly(phenyleneviny1ene) with composition [ C~H~( F~C~) O .~O ]~ and of '2912-doped poly(2,5-thienylenevinylene) with composition [C6H4sIO,SO]n showed FeC4-and symmetrical IS-, respectively, to constitute the dopant ions. The above doping processes are in these aspects equal to the doping processes in polyacetylene, while the corresponding processes in polyphenylene (FeCl3 doping) and polythiophene (I2 doping) show a slightly different behavior.

Metal‐chloride‐anion‐containing polymers with expanded π‐conjugation systems derived from through‐space interactions in the piperazinium ring

“…4 The treatment of -conjugated polymers with FeCl 3 affords corresponding doped polymers containing an FeCl 4 − dopant anion. [5][6][7][8][9] However, it is difficult to adjust the content (doping level) of FeCl 4 − in the doped polymers. The use of a Zincke salt with FeCl 4 − as a monomer is a facile method for the synthesis of -conjugated polymers containing FeCl 4 − in its repeat structure units.…”

“…Ionic compounds with FeCl 4 − have attracted much attention because they can be used as catalysts and paramagnetic materials . The treatment of π‐conjugated polymers with FeCl 3 affords corresponding doped polymers containing an FeCl 4 − dopant anion . However, it is difficult to adjust the content (doping level) of FeCl 4 − in the doped polymers.…”

An Electron Microscopic Study of Highly Oriented Undoped and FeCl3-Doped Poly(p-phenylenevinylene)

“…The slightly larger value of the a-axis length in FeCl 3doped PPV (Table 5) probably reflects the larger Van der Waals radius of the FeCl 4 -dopant anion intercalated in the complex. The nature of the dopant FeCl 4was shown 38 by Mo ¨ssbauer spectroscopy. It could not be inferred from the electron diffraction experiments, although a sign of it appeared in Figure 11a.…”