Scholarlink

<p>A novel non-conjugated aromatic polymer that contains azo-linked moieties of diphenylmethane and 2,5-bis-4-(hydroxyphenyl)-1,4-dimethoxybenzene ((MeO)<sub>2</sub>AzoPhO) has been obtained. The structure of the polymer is corroborated using IR spectroscopy, 1H, 13C NMR, and CP-MAS NMR spectroscopy. With the use of thermogravimetry, it is shown that the compound is thermally stable up to 150°C. Based on the analysis of the electron spectra, it is established that the band gap width (<i>E</i><sub>g</sub>) of (MeO)<sub>2</sub>AzoPhO equals 3.0-3.4 eV. This value is higher than <i>E</i><sub>g</sub> for the polymeric analogue with a conjugated linker (≈2.9 eV) and consistent with the size of the electron density delocalization regions.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Obtaining and Spectral Properties of Azo-Linked Non-Conjugated Polymers with Dimethoxyphenyl Chromophores

  • 期刊论文

  • 发表日期：

    2025年11月1日

查看全文
  • S. S. Altarawneh

摘要

A novel non-conjugated aromatic polymer that contains azo-linked moieties of diphenylmethane and 2,5-bis-4-(hydroxyphenyl)-1,4-dimethoxybenzene ((MeO)2AzoPhO) has been obtained. The structure of the polymer is corroborated using IR spectroscopy, 1H, 13C NMR, and CP-MAS NMR spectroscopy. With the use of thermogravimetry, it is shown that the compound is thermally stable up to 150°C. Based on the analysis of the electron spectra, it is established that the band gap width (Eg) of (MeO)2AzoPhO equals 3.0-3.4 eV. This value is higher than Eg for the polymeric analogue with a conjugated linker (≈2.9 eV) and consistent with the size of the electron density delocalization regions.