Fig. 3 | Nature Communications

Fig. 3

From: Boosting the efficiency of organic persistent room-temperature phosphorescence by intramolecular triplet-triplet energy transfer

Fig. 3

Photophysical properties of CZ-DBF, CZ-DBFBr, CZ-DBT, and CZ-DBTBr. a–d, The prompt (blue zone) and delayed (red zone, 100 ms) PL spectra of the crystalline powders of CZ-DBF (a), CZ-DBFBr (b), CZ-DBT (c), and CZ-DBTBr (d) with ΦF and ΦP inset. Note that the red zones are perfectly overlapped with the longer ranges of the blue zones. e, f, Transient PL decay curves of CZ-DBF, CZ-DBFBr, CZ-DBT, and CZ-DBTBr measured at 430 nm (e) and 550 nm (f) with τ inset. The excitation was 365 nm

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