Thienoisatin Oligomers as N-Type Molecular Semiconductors

Publication Year:
2018
Usage 24
Abstract Views 16
Downloads 8
Repository URL:
https://docs.lib.purdue.edu/surf/2018/Presentations/125
Author(s):
Kadlubowski, Natalie M; Luo, Xuyi; Mei, Jianguo
Tags:
Organic Chemistry; Polymer and Organic Materials; Polymer Chemistry; Semiconductor and Optical Materials
artifact description
Organic field effect transistors (OFETs) offer many advantages compared to traditional inorganic transistors, such as flexibility and solution processability. In this study we design and synthesize two thienoisatin-based organic semiconducting small molecules, then investigate their electronic properties in n-type OFETs. To introduce n-type charge transport, electron-withdrawing dicarbonitrile moieties were installed on thienoisoindigo and bis-thienoisatin molecules, which led to a quinoidal conjugation on thienoisoindigo, while maintaining an aromatic conjugation on the bis-thienoisatin. Following the syntheses, the molecules were characterized to determine highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) levels via cyclic voltammetry, as well as any potential radical properties.