Synthesis and Characterization of Soluble Pentacene Derivative Precursors for Organic Thin-Film Transistors

• Main Authors: Lee, Hung-Kai, 李鴻凱
• Other Authors: Chow, Tashin J.
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/21489445652189609978

碩士 === 中國文化大學 === 化學系應用化學碩士班 === 101 === In this research, we design and synthesize a novel soluble organic thin-film transistor, 1,4- and 2,3-dimethoxypentacene. For increase solubility, we synthesize a carbon monoxide adduct of dimethoxypentacene, which was developed by our laboratory, and then organic thin-film transistors device was fabricated by solution process. dimethoxypentacene can be regenerated in quantitative yield by either thermal or photoinduced elimination of carbon monoxide. Therefore we can substitute vacuum evaporation to reduce cost for fabricating device. We synthesize dimethoxypentacene with dimethoxybenzofulvene and 1,4-anthraquinone to perform Diels-Alder reaction and synthesize the intermediate for dimethoxypentacene. After reduction, aromatization, dihydroxylation and Oxidation, we can get the precursor of dimethoxypentacene with the total yield of 5%. After dihydroxylation and Oxidation, the 2,3-methoxy substituted can’t got ideal product, so the reaction conditions need to be adjusted. From TGA measurement we know that, 1,4-dimethoxypentacene can be regenerated at 155 oC. Determine its characteristic by difference instrument. We fabricate top-contact thin-film device by solution process with gold electrode, Si wafer and then measure its P-type mobility. We didn’t measured mobility, and we need to try other process, method and difference solvent.