Elsevier

Polymer

Volume 34, Issue 9, May 1993, Pages 1846-1849
Polymer

Polymer paper
Microstructure determination of poly(1-naphthylalkyl methacrylate)s by 13C n.m.r. spectroscopy

https://doi.org/10.1016/0032-3861(93)90425-AGet rights and content

Abstract

13C n.m.r. spectroscopy was used to determine the microstructure of naphthalene-containing polymers obtained by free radical polymerization. The splitting of the various carbon resonances of poly(1-naphthyl methacrylate) (PNMA), poly(1-naphthylmethyl methacrylate) (PNMMA) and poly[2-(1-naphthyl)ethyl methacrylate] (PNEMA) show that these are heterotactic polymers conforming with Bernoullian statistics. Based on the calculated probability of generating a meso sequence at the end of the growing chain, the isotacticity appears to decrease in the sequence PNMA > PNMMA ∼ PNEMA. These results are discussed in relation to the photophysical behaviour of these polymers.

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