1H NMR spectral studies on the polymerization mechanism of indole and its derivatives
Jingkun Xu1, Jian Hou, Weiqiang Zhou
1Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China. xujingkun@mail.ipc.ac.cn
Abstract:
The existence of NH bond according to the hydrogen nuclear magnetic resonance ((1)H 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.
Related Concept Videos
Spectroscopy of Carboxylic Acid Derivatives
In the...
IR Frequency Region: Alkyne and Nitrile Stretching
Comparing the stretching vibrational frequency of C≡C triple bonds with that of double and single bonds, it is evident that C≡C triple bonds exhibit a higher stretching frequency than C=C double and C–C single bonds. Similarly, the C≡N triple bond exhibits higher stretching absorption than the C=N...
Anionic Chain-Growth Polymerization: Overview
¹H NMR of Conformationally Flexible Molecules: Temporal Resolution
IR and UV–Vis Spectroscopy of Aldehydes and Ketones
NMR Spectroscopy of Benzene Derivatives


