1H NMR spectral studies on the polymerization mechanism of indole and its derivatives

Abstract:The existence of NH bond according to the hydrogen nuclear magnetic resonance (1H NMR) spectra of polyindole and its derivatives, such as poly(5-bromoindole), poly(5-cyanoindole), poly(5-nitroindole), poly(5-methylindole), proved polymerization of high-quality polyindoles, which were electrosynthesized from middle strong Lewis acid boron trifluoride diethyl etherate (BFEE) and its mixed electrolytes with additional diethyl ether, occurred at 2,3-position. The elongation of the conjugation length made the chemical shift of all the protons of polyindoles to lower field in comparison with those of monomers. © 2005 Elsevier B.V. All rights reserved.

Volume:63

Issue:3

Translation or Not:no