软X射线吸收和发射光谱研究聚苯胺及其掺杂相的电子结构
The electronic structure of polyaniline and doped phases studied by soft X-ray absorption and emission spectroscopies
摘要：
用同步辐射激发的共振和非共振X射线发射光谱研究了共轭聚合物聚苯胺的电子结构。聚苯胺和几个掺杂（质子化）相的碳和氮含量的测量。共振X射线发射谱表明，由于选择性激发增强了对称性选择规则的作用，π电子带被耗尽。X射线发射光谱中的价带结构归因于π带，表明质子化后电子结构发生了明确的变化。通过与X射线吸收测量的比较，表征了化学键和电子构型。
英文摘要：
The electronic structure of the conjugated polymer, polyaniline, has been studied by resonant and nonresonant X-ray emission spectroscopy using synchrotron radiation for the excitation. The measurements were made on polyaniline and a few doped (protonated) phases for both the carbon and nitrogen contents. The resonant X-ray emission spectra show depletion of the π electron bands due to the selective excitation which enhances the effect of symmetry selection rules. The valence band structures in the X-ray emission spectra attributed to the π bands show unambiguous changes of the electronic structure upon protonation. By comparing to X-ray absorption measurements, the chemical bonding and electronic configuration is characterized.
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