Summary
The 300 MHz pmr spectrum of poly(p-bromostyrene) is presented and analyzed. The aliphatic proton resonance of this polymer is very similar to that of polystyrene, but the aromatic proton resonance is somewhat more well defined. The resonance of the ring protons ortho to the polymer backbone occurs in a 5 peak pattern that, in view of the previous results obtained for poly 2- and 3-vinyl thiophenes (1,2) and poly(p-acetylstyrene) (3), was interpreted in terms of pentad stereosequences. Based on the assignments made in this paper, poly (p-bromostyrene) synthesized by free-radical initiated polymerization seems to be atactic.
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Trumbo, D.L., Harwood, H.J. Analysis of the 300 MHz PMR spectrum of poly(p-bromostyrene). Polymer Bulletin 18, 27–32 (1987). https://doi.org/10.1007/BF00255818
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DOI: https://doi.org/10.1007/BF00255818