• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Probing Supramolecular Interactions between a Crown Ether Appended Zinc Phthalocyanine and an Ammonium Group Appended to a C-60 Derivative
【24h】

Probing Supramolecular Interactions between a Crown Ether Appended Zinc Phthalocyanine and an Ammonium Group Appended to a C-60 Derivative

机译：探索冠醚附加锌酞菁和铵基团附加至C-60衍生物之间的超分子相互作用

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

Self-assembly driven by crown ether complexation of zinc phthalocyanines equipped with one 18-crown-6 moiety and fullerenes bearing an ammonium head group afforded a novel donor-acceptor hybrid. In reference experiments, fullerenes containing a Boc-protected amine functionality have been probed. The circumvention of zinc phthalocyanine aggregation is important for the self-assembly, which required the addition of pyridine. From absorption and fluorescence titration assays, which provided sound and unambiguous evidence for mutual interactions between the electron donor and the electron acceptor within the hybrids, association constants in the order of 8.0x10(5)m(-1) have been derived. The aforementioned is based on 1:1 stoichiometries, which have been independently confirmed by Job's plot measurements. In the excited state, which has been examined by transient absorption experiments, intermolecular charge separation evolves from the photoexcited zinc phthalocyanine to the fullerene subunit and leads to short-lived charge-separated states. Interestingly, photoexcitation of zinc phthalocyanine dimers/aggregates can also be followed by an intermolecular charge separation between vicinal phthalocyanines. These multicomponent supramolecular ensembles have also been shown by in-depth electrospray ionization mass spectrometry (ESI-MS) studies, giving rise to the formation and detection of a variety of non-covalently linked species.
机译：由带有一个18-冠-6部分的酞菁锌和带有铵基的富勒烯的冠醚络合驱动的自组装提供了一种新型的供体-受体杂化体。在参考实验中，已探查了含有Boc保护的胺官能团的富勒烯。规避锌酞菁锌聚集对于自组装很重要，因为自组装需要添加吡啶。从吸收和荧光滴定分析法（该方法为杂化体中电子供体和电子受体之间的相互作用提供了明确无误的证据），已经得出了8.0x10（5）m（-1）的缔合常数。前面提到的是基于1：1的化学计量比，这已由Job的图测量独立确认。在已通过瞬态吸收实验检验的激发态下，分子间电荷分离从光激发的酞菁锌演化为富勒烯亚基，并导致了短暂的电荷分离态。有趣的是，锌酞菁二聚体/聚集体的光激发也可以在邻位酞菁之间进行分子间电荷分离。深入的电喷雾电离质谱（ESI-MS）研究也显示了这些多组分超分子集合体，从而形成和检测了多种非共价连接的物种。

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