Phthalocyaninato Transition Metal / Lanthanide-Supported Polyoxometalate Complexes for the Study of Large-Area Molecular Charge Transport Properties

该项目涉及迄今还不发达的一类多金属氧酸盐(POMS)的跨学科协调和物理化学方面的问题，这些多金属氧酸盐是由酞菁(Pc)负载的过渡金属/镧系元素衍生的。有待开发的关键结构特征是将金属-Pc部分直接接枝到空隙的POM核心上。由此得到的杂化化合物有望在溶液和固态的单个分子水平上显示出各种有价值的性质，并以其在(半)导电表面上的自组装单分子膜(SAM)的形式呈现出来。分子POM电荷与POM氧化还原和/或磁性状态之间的特殊相互作用，以及Pc配体的氧化还原活性和金属-Pc部分的顺磁性，被称为有助于识别在隧道结中通过合并的d-态和f-态的电荷传输的受控操纵的不同角度。我们将利用衍射法、光谱法、磁化学法、表面敏感法和量子力学法对合成的异构性金属络合物的二维单分子膜的可加工性、它们与不同的导电和半导体表面的兼容性以及自组装膜的刺激响应态的电触发进行深入的研究。这项跨学科研究的结果旨在推动分子电子学和自旋电子学领域的进一步进展，最终目标是使基本努力的技术转移和商业化成为实用的基于分子的计算机存储设备。

The project addresses the interdisciplinary coordination and physicochemical aspects of the as-yet-underdeveloped class of polyoxometalates (POMs) derivatized with phthalocyaninato (Pc)-supported transition metal / lanthanide moieties. The crucial structural feature to be developed is the direct grafting of metal–Pc moieties onto the lacunary POM core. The resulting hybrid compounds are expected to exhibit a variety of valuable properties at the level of individual molecules in solution and in the solid state and in the form of their self-assembled monolayers (SAMs) on (semi-)conductive surfaces. The exceptional interplay between the molecular POM charge and the POM redox and/or magnetic states that are combined with the redox activity of Pc ligands and the paramagnetism of metal–Pc moieties is called to help identify diverse perspectives for controlled manipulation of charge transport through the incorporated d- and f-states in tunnel junctions. The diffraction, spectroscopic, magnetochemical, surface-sensitive and quantum mechanical methods will be used to gain in-depth insights into the processability of synthesized heteroleptic metal complexes toward two-dimensional monolayers, their compatibility with different conductive and semi-conductive surfaces, and the electrical triggering of stimuli-responsive states of SAMs. The findings of this cross-disciplinary investigation aim to boost further progress in the area of molecular electronics and spintronics, with the eventual goal to enable technology transfer and commercialization of the fundamental efforts to practical molecule-based computer memory devices.