• 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 >Electron transfer reactivity in matrix-assisted laser desorption/ionization (MALDI): Ionization energy, electron affinity and performance of the DCTB matrix within the thermochemical framework
【24h】

Electron transfer reactivity in matrix-assisted laser desorption/ionization (MALDI): Ionization energy, electron affinity and performance of the DCTB matrix within the thermochemical framework

机译：基质辅助激光解吸/电离（MALDI）中的电子转移反应性：热化学框架内的电离能，电子亲和力和DCTB基质的性能

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

DCTB [(H3C)(3)C-p-Ph-CH=C(CH3)-trans-CH=C(CN)(2)] has recently advanced to the most promising matrix material for matrix-assisted laser desorption/ionization (MALDI) within material sciences. However, data that would allow the evaluation of the electron-transfer reactivity within a thermochemical framework are sparse. The present study reports the first-time determination of the ionization energy (IE) of DCTB applying photoelectron (PE) spectroscopy. The experimental IE (8.54 +/- 0.05 eV) is in excellent agreement with the theoretical value of 8.47 eV, obtained by AM1 calculations. The same level of theory determines the electron affinity (EA) as 2.31 eV. Model analytes of known thermochemistry (phenanthrene [C14H10], anthracene [C14H10] and fluorofullerene [C60F46/48]) are used to bracket the electron-transfer reactivity within DCTB-MALDI. The formation of molecular ions of these analytes either is expected or is beyond the thermochemical accessibility of the DCTB matrix.
机译：DCTB [（H3C）（3）Cp-Ph-CH = C（CH3）-trans-CH = C（CN）（2）最近发展成为用于基质辅助激光解吸/电离（MALDI）的最有前途的基质材料）。但是，可以评估热化学框架内电子转移反应性的数据很少。本研究报告应用光电子（PE）光谱法首次确定DCTB的电离能（IE）。实验IE（8.54 +/- 0.05 eV）与通过AM1计算获得的8.47 eV的理论值非常吻合。相同的理论水平将电子亲和力（EA）确定为2.31 eV。已知热化学模型分析物（菲[C14H10]，蒽[C14H10]和氟富勒烯[C60F46 / 48]）用于包围DCTB-MALDI中的电子转移反应性。这些分析物的分子离子的形成是预期的，或者超出了DCTB基质的热化学可及性。

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