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1H-13C NMR inverse detection of poly(3-hexylthiophene): Characterization of the structural defects

✍ Scribed by Adele Mucci; Luisa Schenetti

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
285 KB
Volume
196
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

NMR inverse detection was applied to the study of regiochemistry of a highly head to tail (HT)‐regioregular poly(3‐hexylthiophene) (PHT). It proved to be a valuable tool in the characterization of polymerization defects not directly revealable or assignable by inspection of the one‐dimensional ^13^C spectrum. Almost all the ^13^C chemical shifts of the four configurational triads of PHT were derived by utilizing the aromatic protons, whereas through the α‐protons of the aliphatic chain only carbons belonging to HT‐HT connections were detected, owing to the high regiospecificity of the PHT under study and to the high multiplicity of aliphatic proton signals. The correctness of the model of the interpretation of PHT structure based on the four trimers of 3‐hexylthiophene was confirmed.

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