Characterization of aromatic polymers (benzenoid and heterocyclic) by cross-polarization, magic-angle 13C-NMR spectroscopy

✍ Scribed by Brown, Charles Eric ;Khoury, Issam ;Bezoari, Massimo D. ;Kovacic, Peter

• Book ID: 105333935
• Publisher: John Wiley and Sons
• Year: 1982
• Weight: 593 KB
• Volume: 20
• Category: Article
• ISSN: 0360-6376
• DOI: 10.1002/pol.1982.170200704

✦ Synopsis

Abstract

The cross‐polarization, magic‐angle ^13^C‐NMR spectra of solid samples of poly(p‐phenylene), its nitro derivative, polymerized biphenyl, poly(p‐phenylene sulfide), poly(1‐methyl‐2,5‐pyrrolylene), poly(1‐phenyl‐2,5‐pyrrolylene), poly(2,5‐thienylene), and poly(2,5‐selenienylene) and the high‐resolution ^13^C‐NMR spectrum of poly(m‐phenylene) in solution are presented and assigned. In all cases the chemical shifts are similar to those of model compounds in solution. In most instances the resonances of the nonprotonated carbon atoms in the solid polymers are more intense than those of the protonated carbons and appear to depend on the charge distribution in the molecular orbitals.