...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Crystal growth & design >Luminescent Metal-Organic Complexes of Pyrene or Anthracene Chromophores: Energy Transfer Assisted Amplified Exciplex Emission and Al3+ Sensing
【24h】

Luminescent Metal-Organic Complexes of Pyrene or Anthracene Chromophores: Energy Transfer Assisted Amplified Exciplex Emission and Al3+ Sensing

机译：or或蒽发色团的发光金属有机配合物：能量转移辅助放大的激基复合物发射和Al3 +传感

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

Using pyrene and anthracene monocarboxylate chromophores two metal-organic complexes, {[Cd (pma)(2)(o-phen)(2)]center dot 2H(2)O center dot MeOH)}(n) (1) and {Cd-2(mu-H2O)(amc)(4)(o-phen)(2)}(n) (2) (Hpma = pyrene monocarboxylic acid; Hamc = 9anthracene monocarboxylic acid; o-phen = orthophenanthroline) have been synthesized, respectively and characterized using a single crystal X-ray diffraction study. Compound 1 contains a seven-coordinated Cd2+ center connected by two o-phen and two pma, where one pma and o-phen pair stacks in a face-to-face fashion, and the other pma:o-phen pair is linked through C-H center dot center dot center dot pi interaction. Compound 2 is a dimeric complex of Cd2+ reported previously, and it contains two pairs of face-to-face stacked amc:o-phen. Compound 1 shows a red-shifted bright cyan emission compared to pma monomer emission that can be attributed to pma:o-phen exciplex formation. This exciplex emission is further sensitized by another pma through a Forster resonance energy transfer (FRET) process. Similarly in the case of 2, amc:o-phen exciplex emission is sensitized through FRET from the other amc linker in the solid state, while in methanol such an energy transfer process is perturbed resulting in a dual emission related to a monomer of amc and exciplex of amc:o-phen. Interestingly, the blue emission of 2 dispersed in methanol changes to a bright cyan-green emission upon addition of Al3+ and remains almost unchanged or slightly affected with other metal ions leading to selective chemosensing of Al3+. Moreover, the density functional theory based calculations provide clear evidence of ground state interactions between pma:o-phen and amc:o-phen in 1 and 2, respectively.
机译：使用pyr和蒽单羧酸盐生色团，两种金属-有机配合物，{[Cd（pma）（2）（o-phen）（2）]中心点2H（2）O中心点MeOH）}（n）（1）和{ Cd-2（mu-H2O）（amc）（4）（o-phen）（2）}（n）（2）（Hpma = mono一元羧酸; Hamc = 9蒽一元羧酸; o-phen =邻菲咯啉）合成并使用单晶X射线衍射研究表征。化合物1包含一个由两个o-phen和两个pma连接的七个坐标的Cd2 +中心，其中一个pma和o-phen对以面对面的方式堆叠，另一个pma：o-phen对通过CH连接。中心点中心点中心点pi交互。化合物2是先前报道的Cd2 +的二聚体复合物，它包含两对面对面堆积的amc：o-phen。与pma单体发射相比，化合物1显示出红移的亮青色发射，这可归因于pma：o-phen激基复合物的形成。这种激基复合物的发射通过福斯特共振能量转移（FRET）过程被另一个pma进一步敏化。相似地，在2的情况下，通过FRET从另一个固态的amc接头通过aRET激发amc：o-phen激基复合物发射，而在甲醇中，这种能量转移过程受到干扰，导致与amc和amc单体有关的双重发射。 amc：o-phen的激基复合物。有趣的是，分散在甲醇中的2的蓝色发射在添加Al3 +后变为亮的蓝绿色发射，并几乎保持不变或受到其他金属离子的轻微影响，从而导致Al3 +的选择性化学传感。此外，基于密度泛函理论的计算为pma：o-phen和amc：o-phen在1和2之间的基态相互作用提供了清晰的证据。

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