Applications of Triaryl Cations in Electronics
Presented By: Claudia Prindle
Abstract:
Triarylmethylium and triangulenium cations are a class of organic dyes that are composed of a carbocation that is stabilized by three phenyl rings, either fused or unfused, respectively. As a result of their impressive synthetic tunability, these effective dyes and fluorophores provide a basis for a wide array of applications, such as DNA labelling, bioimaging, phase transfer catalysis, and redox chemistry. In this thesis defense, I will be discussing two projects in which triarylmethylium and trian- gulenium analogs are incorporated into single-molecule devices and donor-acceptor molecules. In the first half of this talk, I will talk about how single-molecule conductance of these molecules can be gated by different substituents up to a factor of ~450 through Fano resonances. In the second half of my talk, I will talk about a new donor-acceptor system based on triazatriangulenium and fused tri- oxytriphenylamine subunits with tunable emission quenching. The findings of this dissertation chart a clear path for the incorporation of these triaryl cations into tunable single-molecule transistors and organic optoelectronic devices.
