Tetrathiafulvalene-supported triple-decker phthalocyaninato dysprosium(III) complex: synthesis, properties and surface assembly.
Tetrathiafulvalene-supported triple-decker phthalocyaninato dysprosium(III) complex: synthesis, properties and surface assembly.
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四硫富瓦烯负载的三层酞菁镝(III)配合物：合成、性能和表面组装
DOI：
10.1038/srep05928
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发表时间：
2014-08-04
影响因子：
4.6
通讯作者：
Zuo JL
中科院分区：
文献类型：
--
作者：
Gao F;Zhang XM;Cui L;Deng K;Zeng QD;Zuo JL
通过控制和优化分子间的相互作用，将功能化合物自组装成具有理想尺寸和形貌的纳米结构，吸引了化学家和材料科学家的广泛研究兴趣。本文合成了一种新型的三层结构的含四硫富瓦烯（TTF）单元的Schiff碱配体和酞菁的稀土配合物，并通过X射线单晶衍射、吸收光谱、电化学和磁学等手段对其进行了表征。有趣的是，通过扫描隧道显微镜（STM）在单分子水平上观察到，非中心对称目标复合物在固体表面上表现出偏压依赖性的选择性吸附。利用密度泛函理论（DFT）计算揭示了分子组装体的形成机理，并表明这种电场依赖的选择性吸附是由外电场和分子固有性质之间的相互作用所调节的.我们的研究结果表明，这种类型的多层复合物涉及TTF单元显示出有趣的多功能性能的观点，结构，电和磁行为，并通过自组装制造。
Self-assembly of functional compounds into a prerequisite nanostructure with desirable dimension and morphology by controlling and optimizing intermolecular interaction attracts an extensive research interest for chemists and material scientist. In this work, a new triple-decker sandwich-type lanthanide complex with phthalocyanine and redox-active Schiff base ligand including tetrathiafulvalene (TTF) units has been synthesized, and characterized by single crystal X-ray diffraction analysis, absorption spectra, electrochemical and magnetic measurements. Interestingly, the non-centrosymmetric target complex displays a bias dependent selective adsorption on a solid surface, as observed by scanning tunneling microscopy (STM) at the single molecule level. Density function theory (DFT) calculations are utilized to reveal the formation mechanism of the molecular assemblies, and show that such electrical field dependent selective adsorption is regulated by the interaction between the external electric field and intrinsic molecular properties. Our results suggest that this type of multi-decker complex involving TTF units shows intriguing multifunctional properties from the viewpoint of structure, electric and magnetic behaviors, and fabrication through self-assembly.
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