Qishui Chen (Nuckolls Group)
2:30pm - 3:30pm
This thesis describes the synthesis of new cyclic and linear olefinic oligomers and studies on their structure-property relationships for molecular electronic applications. First, a new family of cyclic stilbene oligomers is introduced. The stereoselective synthesis of two cyclostilbenes and the mechanism are discussed. These cyclostilbenes emit blue light with high fluorescence quantum yields and form channel architectures in the solid state that can be filled with guest molecules. In the second part, I will discuss a new method of tuning rectification in single molecule diodes with a stilbene backbone and asymmetric linker groups. We demonstrate through single-molecule current-voltage measurements that the rectification ratio can be predictably and efficiently tuned. This result constitutes the first experimental demonstration of a rationally tunable system of single-molecule rectifiers.