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Solid-state NMR characterization of a series of copolymers containing fluorene, phenylene and thiophene units

机译:一系列包含芴,亚苯基和噻吩单元的共聚物的固态NMR表征

摘要

Fluorene and thiophene units are commonly used in polymeric materials for electro-optical applications. Due to differences in reactivity, the final composition of polymers containing these components often differs from that used in their preparation. This contribution describes the synthesis of PPV type terpolymers built by fluorene, phenylene and thiophene units and their quantification by CPMAS NMR. The similarity of the three aromatic co-monomers makes it difficult to separate the analytical responses that would allow quantification of each copolymer unit in the chain. In this sense, we show that the combination of dipolar dephased CPMAS with radiofrequency ramp and proper spectral treatment allows a good estimation and quantification of the copolymer constitution. (C) 2011 Elsevier Ltd. All rights reserved.
机译:芴和噻吩单元通常用于电光应用的聚合物材料中。由于反应性的差异,含有这些组分的聚合物的最终组成通常与制备中所用的不同。该贡献描述了由芴,亚苯基和噻吩单元构建的PPV型三元共聚物的合成,以及它们通过CPMAS NMR进行的定量。三种芳族共聚单体的相似性使得难以分离分析反应,从而无法量化链中每个共聚物单元。从这个意义上讲,我们表明,偶极分相的CPMAS与射频斜坡以及适当的光谱处理相结合,可以很好地估算和量化共聚物的组成。 (C)2011 Elsevier Ltd.保留所有权利。

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