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Synthesis of Pyrene Diimide Isomers with Tunable Excimer Emission
Katherine Johnston1, Alison McCostis1, Emma Mikita1
1Department of Chemistry and Biochemistry, Fordham University, Bronx, New York 10458, United States.
Abstract:
The optoelectronic properties of pyrene diimides (PyDIs) are of strategic interest given the successful application of similar rylene diimides as n-type organic semiconductors in a variety of organic electronics. We present an improved synthesis for 1,5,6,10-pyrene diimide and the first report of its isomer, 1,8,9,10-pyrene diimide. We demonstrate the effect of imide placement on the core structure, optical properties, and electron affinities. Notably, we have discovered that both isomers exhibit tunable aggregation-induced excimer emission and that 1,8,9,10-PyDI exhibits anti-Kasha emission.
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