Extended Ru2-alkynyls and Charge Transfer Processes Therein: Synthesis, Modulation and New Materials

普度大学化学系的Tong Ren博士受到化学系无机、生物无机和有机金属化学项目的支持，主要从事扩展型二钌-烷基的合成以及这些配合物的电荷转移特性的研究。该项目的具体目标是制备在长碳链两端被氧化还原活性钌单元封顶的配合物，以及将钌基团插入碳链并且封顶基团为其他氧化还原活性基团的配合物。这些物质的碳碳链长度达到10nm左右。发生在这些化合物中的电荷转移过程将通过光谱、电化学和电导率测量来评估。这些研究将表明由不同长度的不饱和碳链连接的金属中心之间电子通信的细节。这些金属-金属键合物质具有多种氧化还原状态，从而具有有趣的磁性、电泳性和显色性。这些化合物正被研究为潜在的“分子线”，即可以在纳米级电子电路中导电的单分子。对这些分子的电子通信和电导的基础研究可能会导致分子电子器件的出现。参与该项目的本科生、研究生和博士后将学习现代合成和表征技能，以及纳米图案和纳米结技术。

Dr. Tong Ren, Chemistry Department, Purdue University is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program of the Chemistry Division for the synthesis of extended diruthenium-alkynyls and for the study of the charge transfer properties of these complexes. The specific goals of the project are to prepares complexes where a long carbon chain is capped on both ends by redox active diruthenium units and ones where the diruthenium group is inserted into the carbon chain and the capping groups are other redox active moieties. The carbon carbon chain lengths in these species will go to about 10nm. The charge transfer processes that occur in these compounds will be evaluated by spectroscopic, electrochemical, and conductivity measurements. These studies will indicate the details of electronic communication between metal centers that are joined by unsaturated carbon chains of various lengths. The multiple redox states accessible by these metal-metal bonded species allows interesting magnetic, electrophoric and chromophoric properties.These compounds are being studied as potential "molecular wires," single molecules that can conduct electricity in a nanosized electronic circuit. Fundamental studies of electronic communication and conductance in these molecules may lead to molecular electronic devices. Undergraduate, graduate, postdoctoral students working on this project will learn modern synthetic and characterization skills as well as nanopatterning and nanojunction techniques.