...
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Design of UV-Vis-NIR panchromatic crown-phthalocyanines with controllable aggregation
【24h】

Design of UV-Vis-NIR panchromatic crown-phthalocyanines with controllable aggregation

机译:具有可控聚集的UV-Vis-NIR全色冠酞菁的设计

获取原文
获取原文并翻译 | 示例
           

摘要

Novel magnesium and zinc phthalocyaninates, bearing four lateral electron-rich 15-crown-5-oxanthrene fragments, were synthesized starting from benzo-15-crown-5. Being almost insoluble in common organic solvents, these complexes could be solubilised by interaction with potassium acetate due to the formation of well-defined cofacial supramolecular dimers. A characteristic feature of these dimers is the presence of additional bands in their UV-Vis spectra, which affords the expansion of light absorption region up to similar to 750 nm. This new band corresponds to the charge transfer from the peripheral groups to the Pc core, as evidenced by TDDFT calculations. Potassium cations can be reversibly removed from these dimers by [2.2.2] cryptand, resulting in the formation of monodisperse nanoparticles exhibiting absorbances up to 900 nm. This approach can be further used for the fabrication of nanostructured opto-electronic materials based on the synthesized donor-acceptor panchromatic crown-phthalocyanines.
机译:从苯并15冠5合成了带有四个侧向富电子的15冠5氧杂蒽片段的新型酞菁镁和锌。这些络合物几乎不溶于常见的有机溶剂,由于形成了明确的界面超分子二聚体,因此可通过与乙酸钾相互作用而溶解。这些二聚体的一个特征是在它们的UV-Vis光谱中存在其他谱带,从而提供了多达750 nm的光吸收区域扩展。新的频带对应于从外围组到Pc内核的电荷转移,TDDFT计算证明了这一点。钾阳离子可通过[2.2.2]穴状化合物可逆地从这些二聚体中去除,导致形成单分散性纳米粒子,并显示高达900 nm的吸光度。该方法可进一步用于基于合成的供体-受体全色冠状酞菁的纳米结构光电材料的制造。

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