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. 2016 May 10;7:11555. doi: 10.1038/ncomms11555

Figure 1. Optical images of the β- and γ- polymorphs of coronene.

Figure 1

(a) in daylight and (b) under ultraviolet (λ=365 nm) illumination to show fluorescence. The squares on the grid in a are 0.5 × 0.5 cm2.