Aurophilicity derived Functional Materials for Optoelectronics and Sub-Nano Physics

受新型混价金化合物双(环己基腈)金(I)四氯月桂酸酯(III)的启发，本项目致力于合成(1)混价金(I/III)和(2)金(I)化合物，它们都是由于亲水性吸引而形成交替的单阳离子和单阴离子金络合物，并对它们的物理和光谱性质进行了测定。从以前的研究中得到的具有无支撑亲金接触的结构的大量基础和其中的二次成键的评估使得中性和阴离子配体对的设计能够导致链状组装，从而合成定制的超分子金化合物。从这个项目中得到的见解将有助于阐明交替的阳离子和阴离子金(I)和金(I/III)络合物的金链的结构-发光关系。发光性质与手性的关联使新型手性传感和光电子器件的发展成为可能。这项研究的另一个主要目标是在介孔碳和金属-有机骨架的有序空腔内沉积亚纳米原子金导线或原子金丝的三维网络。实现宽度为1-2个原子的金(0)纳米线仍然局限于基于原子力显微镜和扫描隧道显微镜的原子操纵技术。这种原子结构对于原子尺度上的量子电导、量子霍尔效应和磁相互作用等基本测量具有重要意义。

Inspired from the novel mixed-valent gold compound bis(cyclohexylnitrile)gold(I) tetrachloridoaurate(III) this project focusses on the synthesis (1) of mixed-valent gold(I/III) and (2) of gold(I) compounds, both crystallizing in chains of alternating monocationic and monoanionic gold complexes owing to aurophilic attraction, and on the determination of their physical and spectroscopic properties. The large fundament of structures with unsupported aurophilic contacts from former research and the evaluation of the secondary bonding therein enable the design of pairs of neutral and anionic ligands leading to chain-like assembly and, thus, the synthesis of tailored supramolecular gold compounds. The insights from this project will shed light on the structure-luminescence relationship of gold chains consistent of alternating cationic and anionic gold(I) and gold(I/III) complexes. The association of luminescent properties with chirality allows the development of novel chiral sensing and optoelectronic devices. Another main objective of this fellowship is the deposition of sub-nano wires of atomic gold or three-dimensional networks of atomic gold wires within the ordered cavities of mesoporous carbon and metal-organic frameworks. The realization of gold(0) nanowires with a width of 1-2 atoms is still limited to AFM- and STM-based atom manipulation techniques. Such atomic structures are of high interest for fundamental measurements, e.g. quantum conductance, the quantum Hall effect and magnetic interaction on an atomic scale.