...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Inorganic Chemistry Frontiers >Donor-acceptor type A2B2 porphyrins: synthesis, energy transfer, computational and electrochemical studies
【24h】

Donor-acceptor type A2B2 porphyrins: synthesis, energy transfer, computational and electrochemical studies

机译：供体受体A2B2卟啉：合成，能量转移，计算和电化学研究

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

A series of donor-acceptor type trans-A2B2 porphyrins and their Zn(II) and Pd(II) complexes 5-13 have been synthesized and characterized by various spectroscopic techniques. The effect of the donor moieties (e.g., N-butylcarbazole, N-butylphenothiazine, and triphenylamine) on the spectroscopic properties of the porphyrins has been studied. The structural changes indeed affected the optical and electrochemical properties of these porphyrins. Higher energy shifts of the Soret bands were observed for porphyrins upon varying the donor moieties. The electrochemical studies of all the derivatives indicated increased interactions between the donor groups and the porphyrin core, which in turn are reflected in the anodic shifts in their reduction potentials. Both steady-state and time-resolved fluorescence studies revealed effective energy transfer (EET; up to 87%) from donor groups to the porphyrin core in the porphyrins, 5-10. The palladium(II) porphyrin complexes, 11-13, showed characteristic phosphorescence in the near IR region. Density functional theory (DFT) studies support the presence of donor-acceptor interaction between the porphyrin core and the meso-substituents in the dyads. Density functional theory (DFT) and time dependent-density functional theory (TD-DFT) studies showed that in 5, 8 and 11, the transitions are of π → π* type; whereas in the other molecules viz. 6, 7, 9, 10, 12 and 13 intramolecular charge transfer (ICT) is involved in all the respective highest intensity absorption transitions.
机译：已经合成了一系列供体 - 受体类型Trans-A2B2卟啉及其Zn（II）和Pd（II）配合物5-13，其特征在于各种光谱技术。研究了供体部分（例如，正丁基咔唑，正丁基苯噻嗪和三苯胺）对卟啉的光谱性质的影响。结构变化确实影响了这些卟啉的光学和电化学性质。在改变供体部分时，对于卟啉观察到裂出带的较高能量偏移。所有衍生物的电化学研究表明供体基团与卟啉核之间的相互作用增加，这反过来反映在其还原电位的阳极偏移中。稳态和时间分辨荧光研究均显示出从供体基团到卟啉核中的有效能量转移（EET;高达87％），卟啉核心，5-10。钯（II）卟啉配合物11-13显示在近红外区域的特征磷光。密度函数理论（DFT）研究支持卟啉核心与二元卟啉核心和中间取代基之间的供体受体相互作用的存在。密度函数理论（DFT）和时间依赖性密度泛函理论（TD-DFT）研究表明，在5,8和11中，过渡是π→π*型;而在其他分子上。参照图6,7,9,10,12和13分子内电荷转移（ICT），参与了所有相应的最高强度吸收转变。

著录项

  • 来源
    《Inorganic Chemistry Frontiers》 |2017年第4期|共21页
  • 作者

    Sudipta Das; Haamid R. Bhat; Naresh Balsukuri;

  • 作者单位

    Indian Institute of Technology Gandhinagar Village Palaj Simkheda Gandhinagar Gujarat-382355 India.;

    School of Chemical Sciences Central University of Gujarat Gandhinagar Gujarat India;

    Indian Institute of Technology Gandhinagar Village Palaj Simkheda Gandhinagar Gujarat-382355 India.;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无机化学;
  • 关键词

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