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首页> 外文期刊>Applied Spectroscopy: Society for Applied Spectroscopy >Characterization of an Optoelectronic Polymer, Poly(2-phenoxy p-phenylene vinylene), and its Precursor Polymer by Dynamic Infrared Spectroscopy
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Characterization of an Optoelectronic Polymer, Poly(2-phenoxy p-phenylene vinylene), and its Precursor Polymer by Dynamic Infrared Spectroscopy

机译：光电聚合物，聚（2-苯氧基对亚苯基亚乙烯基）及其前体聚合物的动态红外光谱表征

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Numerous applications of dynamic infrared spectroscopy to study a variety of polymer systems have been described in the literature. Typically, dynamic spectral changes are used to determine the molecular and submolecular reorientations that give rise to a material's observable mechanical properties. In the present study, the normal modes are characterized by their time-dependent response to an applied perturbation as an aid to assignment of the observed vibrational bands. Characterization of a newly synthesized optoelectronic polymer, poly(2-phenoxy p-phenylene vinylene), and its precursor polymer, is described. Vibrational modes along the backbone and side chain are expected to exhibit significantly different responses to mechanical perturbation due to delayed phase response of the phenoxy substituent. In-phase spectra, quadrature spectra, and two-dimensional infrared correlation maps are included in this characterization. This study has demonstrated that dynamic infrared spectroscopy can be used to distinguish backbone phenylene ring stretches from ring stretches associated with the phenoxy substituent. Density functional theory calculations are applied to confirm infrared spectral assignments. The mechanical properties are briefly discussed in light of the dynamic response.
机译：在文献中已经描述了动态红外光谱学在研究多种聚合物系统中的许多应用。通常，动态光谱变化用于确定引起材料可观察机械性能的分子和亚分子重新取向。在本研究中，正常模式的特征在于它们对所施加扰动的时间依赖性响应，以帮助分配观察到的振动带。描述了新合成的光电聚合物，聚（2-苯氧基对亚苯基亚乙烯基）及其前体聚合物的表征。由于苯氧基取代基的延迟相响应，预期沿骨架和侧链的振动模式对机械扰动表现出明显不同的响应。此表征中包括同相光谱，正交光谱和二维红外相关图。这项研究表明，动态红外光谱可用于区分骨架亚苯基环段和与苯氧基取代基相关的环段。密度泛函理论计算用于确认红外光谱分配。根据动态响应简要讨论了机械性能。

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