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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Facile Synthesis of Coronene Dimers Having Unique Optical Properties
Taichi Hayakawa, Hayong Song, Yosuke Ishii and Shinji Kawasaki.
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DOI:10.17265/1934-7375/2015.07.002
The authors synthesized very pure dimer phase of coronene by simple heat-treatment and subsequent sublimation purification. It was confirmed by laser desorption/ionization mass spectroscopy measurements that pure dimer phase of coronenes can be obtained by controlling the fusing and sublimation temperatures. The crystal structure of the dimer phase was analyzed by synchrotron XRD (X-ray diffraction) experiments. It was also found that very bright red light is emitted by irradiating ultra violet light (λ = 350 nm) to the dimer phase. The external and internal quantum yields were determined to be 5.56% and 6.95%, respectively.
Graphene, PAH, PL, LED.
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