Studies on conjugated polymers seldom report on their NMR characterization in solution. This paper shows how NMR experiments, both ¹H NMR and routine 2D NMR spectra, can help in gaining a further insight into the aggregation behavior of conjugated polymers and could be used to flank the more employed solid-state NMR and other spectroscopy and microscopy techniques in the understanding of the aggregation processes. NMR spectroscopy allows distinguishing, within the class of poorly solvatochromic conjugated polymers, those highly prone to form π-stacked aggregates from the ones that have a low tendency toward π-stacking.

中文翻译：

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噻吩基共轭聚合物在NMR溶液光谱中的π堆积特征

对共轭聚合物的研究很少报道其在溶液中的NMR表征。本文展示了¹ H NMR和常规2D NMR光谱的NMR实验如何有助于进一步了解共轭聚合物的聚集行为，并可以用于侧翼更多采用的固态NMR和其他光谱学和显微技术了解聚合过程。NMR光谱法可以在弱溶剂化变色共轭聚合物类别中将那些极易形成π堆积聚集体的聚合物与那些不易形成π堆积聚集体的聚合物区分开来。