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(a) Long-time decay of emission from a mCBP 1% TpAT-tFFO film fitted with a biexponential curve with lifetimes of 56 ms and 1.1 s. The inset shows the emission spectra recorded at 40 and 400 ms, showing that the two decay components come from energetically identical species. (b) Comparison of prompt fluorescence with 900 ms delayed phosphorescence measured at 20 K for a TpAT-tFFO zeonex film.
