GROWTH OF LINEAR POLYANILINE CHAINS IN A LAYERED TIN(IV) PHOSPHONATE HOST

The conductive emeraldine form of polyaniline was chemically synthesiz ed in the interlayer space of tin(IV)-2-carboxyethyl phosphonate (SnP- C) by exposure of the Fe(III)-containing host to an aqueous acid solut ion of aniline. The transition metal ion was previously intercalated i n SnP-C by ionic exchange. The composite shows the characteristic elec troactive properties of polyaniline, although the amount of the polyme r does not exceed 3.5 wt.%. It was also characterized by FT-IR and X-r ay diffraction, confirming the formation of the polymer in the interla yer space of the host material. (C) 1997 Elsevier Science S.A.