...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Assignment of carbon chain molecules in cryogenic matrices by selective laser-induced oxidation
【24h】

Assignment of carbon chain molecules in cryogenic matrices by selective laser-induced oxidation

机译：通过选择性激光诱导的氧化作用分配低温基质中的碳链分子

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We tested and applied a laser-induced oxidation method for identifying the IR-active stretching mode absorptions of linear C2n +1 molecules which have known strong UV-vis absorptions. For this purpose, we trapped the molecules of carbon vapor in non-inert matrices (pure O-2 and Ar-O-2 mixtures) at temperatures providing molecular growth. The matrix was exposed to laser light tuned to the wavelength of the UV-vis transition of a specific carbon species. We observed a bleaching of that UV-vis absorption and a correlated decrease of lines in the IR spectra for C-9, C-11, C-13, C-15, and C-21. The data suggest that the strongest IR absorptions of the C2n +1 (n >= 4) chains form a regular pattern with increasing n. To obtain information about IR absorptions of carbon chain oxides, oxygen matrices with replaced O-16 ->O-18 isotopes were applied. Our data revise some of the IR assignments existing in the literature.
机译：我们测试并应用了激光诱导氧化方法，以鉴定线性C2n +1分子的IR活性拉伸模式吸收，该分子具有很强的UV-vis吸收。为此，我们在提供分子生长的温度下将碳蒸气分子捕获在非惰性基质（纯O-2和Ar-O-2混合物）中。将基体暴露于调谐至特定碳物质的UV-vis跃迁波长的激光下。我们观察到C-9，C-11，C-13，C-15和C-21的UV-vis吸收发生了漂白，并且红外光谱中的谱线减少了。数据表明，C2n +1（n> = 4）链的最强IR吸收会随着n的增加而形成规则的模式。为了获得有关碳链氧化物的IR吸收的信息，应用了具有取代的O-16-> O-18同位素的氧矩阵。我们的数据修改了文献中现有的一些IR分配。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号