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首页> 外文期刊>Materials Chemistry and Physics >Absorption of acrylates and polysilazanes in the far UVC and the VUV regions
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Absorption of acrylates and polysilazanes in the far UVC and the VUV regions

机译：UVC和VUV区域中丙烯酸酯和聚硅氮烷的吸收

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摘要

A simple but reliable method was developed for the determination of wavelength-dependent absorption coefficients in the vacuum-UV (VUV) spectral range 160nm< λ < 195 nm. Absorption coefficients were determined on thin layers of UV curable compounds like acrylates and of polysilazanes, which are subject to photo-induced conversion into SiO_x layers. Results were discussed in terms of changing values of the absorption coefficients during irradiation. In case of acrylates polymerization leads to the decrease of the absorption coefficients especially in the wavelength range about 195 nm from about 10μm~(-1) to about 1 μm~(-1). Results of quantum-chemical calculations explain this finding by the depletion of double bonds for which ππ* transitions are characteristic. XPS depth profiles reveal the VUV induced degradation of carboxyl and ether functionalities in a thin surface layer corresponding to the penetration depth of the VUV photons.
机译：开发了一种简单而可靠的方法来确定真空紫外（VUV）光谱范围160nm <λ<195 nm中与波长有关的吸收系数。在诸如丙烯酸酯和聚硅氮烷的可UV固化的化合物的薄层上确定吸收系数，将其光诱导转化为SiO x层。根据照射期间吸收系数的变化值讨论了结果。在丙烯酸​​酯的情况下，聚合导致吸收系数的降低，特别是在从大约10μm〜（-1）到大约1μm〜（-1）的大约195nm的波长范围内。量子化学计算的结果通过耗尽具有ππ*跃迁特征的双键来解释这一发现。 XPS深度剖面揭示了VUV诱导的薄表层中羧基和醚官能团的降解，与VUV光子的穿透深度相对应。

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  • 来源
    《Materials Chemistry and Physics》 |2012年第1期|235-242|共8页
  • 作者

    Lutz Prager; Luise Wennrich; Wolfgang Knolle; Sergej Naumov; Andrea Prager;

  • 作者单位

    Leibniz-lnstitut fuer Oberflaechenmodifizierung e.V. (IOM), Chemical Department, Permoserstr. 15, D-04318 Leipzig, Germany;

    Leibniz-lnstitut fuer Oberflaechenmodifizierung e.V. (IOM), Chemical Department, Permoserstr. 15, D-04318 Leipzig, Germany;

    Leibniz-lnstitut fuer Oberflaechenmodifizierung e.V. (IOM), Chemical Department, Permoserstr. 15, D-04318 Leipzig, Germany;

    Leibniz-lnstitut fuer Oberflaechenmodifizierung e.V. (IOM), Chemical Department, Permoserstr. 15, D-04318 Leipzig, Germany;

    Leibniz-lnstitut fuer Oberflaechenmodifizierung e.V. (IOM), Chemical Department, Permoserstr. 15, D-04318 Leipzig, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    thin films; polymers; XPS; optical properties;

    机译：薄膜;聚合物XPS;光学性质;

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