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Preparation, structural characterization and electrical properties of zinc chloride complexes of 4-vinylpyridine and poly(4-vinylpyridine)

✍ Scribed by J.R. Allan; B.R. Carson; K. Turvey; J. Birnie; D.L. Gerrard

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 314 KB
Volume: 27
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(91)90154-g

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✦ Synopsis

The compound Zn(Vpy)2CI2, where Vpy is 4-vinylpyridine, has been isolated from ethanolic solution after the reaction of zinc chloride with 4-vinylpyridine. Polymerization of this monomeric compound to [Zn(Vpy)2C12L was achieved. Also, poly(4-vinylpyridine) was reacted with zinc chloride to produce the metal polymer [Zn(Vpy)(H20)CI2]' n . Spectral studies showed the environment of the zinc ion in both [Zn(Vpy)2C12] n and [Zn(Vpy)(H:O)C12]' n to be tetrahedral. The metal polymers have been further characterized by gel permeation chromatography, differential thermal analysis and thermogravimetry; their electrical properties have been studied. The monomer Zn(Vpy)2Cl 2 and its polymer each have room temperature electrical conductivities higher (but by factor < 3) than that for poly(4-vinylpyridine). The polymer [Zn(Vpy)(H2 O)C12]',, has a much higher conductivity than the other materials, possibly because of the incorporation of water molecules in its structure.

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