ISSN:
0887-6266
Schlagwort(e):
poly(N-vinylcarbazole)
;
iodine doping
;
CT complex iodine-PVK
;
annealing degradation
;
Chemistry
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Physik
Notizen:
After room temperature doping of poly(N-vinylcarbazole) by iodine, the powders are annealed at different temperatures (370, 470, and 570 K) for 24 h under vacuum or under iodine pressure. The obtained powders were studied by infrared absorption, x-ray photoelectron spectroscopy, x-ray diffraction, and nuclear magnetic resonance. Annealing of pure PVK powder increases the crystallization quality of the sample. Annealing with iodine induces progressive polymer degradation. At 570 K under iodine pressure the PVK is totally destroyed. The aromatic rings and the C(SINGLEBOND)N bonds have disappeared. NH4I crystallites have formed, embeded in a degraded, cross-linked polymer matrix. © 1996 John Wiley & Sons, Inc.
Zusätzliches Material:
6 Ill.
Materialart:
Digitale Medien
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