R. Kiebooms, P. Adriaensens, D. Vanderzande
Aug 26, 1996
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0
Influential Citations
5
Citations
Journal
Macromolecules
Abstract
In order to help provide a more detailed structural analysis of poly(4,5,6,7-tetrafluorobenzo[c]thiophene), a series of aromatic fluorinated oligomers (n = 1−4) and 1,3-dithienyl-4,5,6,7-benzo[c]thiophene have been synthesized. Structure analysis of these compounds by means of 1D and 2D NMR techniques provides a set of spectroscopic NMR data which can be considered as characteristic for the aromatic structure of the corresponding polymer. In addition to 19F-decoupled 13C NMR spectroscopy and attached fluorine tests, the method of full chemical shift assignment based on two-dimensional 1H−13C heteronuclear correlation (HETCOR) experiments optimized for JCH = 140 Hz and JCH = 8 Hz was extended with two-dimensional 19F−13C heteronuclear correlation (HETCOR) experiments optimized for JCF = 255 Hz and JCF = 45 Hz and 19F−19F homonuclear correlation spectroscopy (COSY).