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

Tong Ren博士，普渡大学化学系，由化学系的无机，生物无机和有机化学项目支持，用于合成扩展的二炔鎓-炔基化合物，并研究这些配合物的电荷转移性质。该项目的具体目标是制备复合物，其中长碳链两端被氧化还原活性二钌单元封端，以及其中二钌基团插入碳链中并且封端基团是其他氧化还原活性部分的复合物。这些物种中的碳碳链长度将达到约10 nm。这些化合物中发生的电荷转移过程将通过光谱、电化学和电导率测量进行评估。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的电子通信的细节。这些金属-金属键合的化合物具有多种氧化还原态，因此具有有趣的磁性、电致发光和发色特性。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。对这些分子中电子通讯和电导的基础研究可能会导致分子电子器件。从事该项目的本科生、研究生和博士后学生将学习现代合成和表征技能以及纳米图案化和纳米结技术。

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.