Dielectric and Dipole Moment Study of Charge Transfer Complexes of Poly(N-Vinylcarbazole) and 2,4,7-Trinitro-9-Fluorenone
Poly(N-vinylcarbazole), PVK, is one of the most important photoconductive polymer. The stereostructure of PVK is now understood to influence significantly its electro-active properties. PVK was prepared by azobisisobutyronitrile (sample labeled F1) and borontrifluoride etherate (sample labeled F2) showed isotacticities of 25% and 55%, respectively as determined by IH and 13C N.M.R. Spectroscopy. Dipole moments of these two stereostructural samples of PVK complexed with 2,4,7-trinitro-9-fluorenone were determined in solution in 1,4-dioxane. The results are explained in terms of polymer conformation and type of charge transfer complex. The influence of temperature on dipole moments is also discussed.
KeywordsDipole Moment Dielectric Permittivity Temperature Coefficient Charge Transfer Complex Helical Conformation
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