Synthesis and characterization of electropolymerized poly(cyclophosphazene-benzoquinone)
- Pacific Northwest National lab., Richland, WA (United States)
Formation of a inorganic-organic hybrid material from hexachlorocyclotriphosphazene, (NPCl{sub 2}){sub 3}, and quinone precursors directly at the electrode surface was studied. These materials are formed from electrochemically generated quinone radical anion and quinone dianion at the electrode surface followed by nucleophilic substitution of the chlorine on the phosphazene heterocycle. The polymerization process is controlled by the electrochemical-chemical-electrochemical-chemical.. (ECEC..) mechanism and is independent of the concentration of the BQ in the solution. The chemical composition of the poly(cyclophosphazene-benzoquinone), PPBQ, material was examined by elemental analysis and the X-ray photoelectron spectroscopy. {sup 31}P Nuclear magnetic resonance, Fourier transform infrared spectroscopy, and X-ray diffraction were used to characterize the chemical structure of the material. The results confirm that the PPBQ is formed by replacement of four chlorine atoms on one (NPCl{sub 2}){sub 3} precursor by four quinones which are linked directly to the phosphorus through their oxygens. The resulting material is amorphous, chemically inert, electrically nonconducting, nonflammable, and porous. The thickness of PPBQ and porosity of the PPBQ can be controlled electrochemically.
- OSTI ID:
- 569446
- Journal Information:
- Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 6 Vol. 9; ISSN CMATEX; ISSN 0897-4756
- Country of Publication:
- United States
- Language:
- English
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