Fig. 5: Emission properties.
From: Stacked nanocarbon photosensitizer for efficient blue light excited Eu(III) emission

Emission (black solid line, λex = 450 nm) and excitation (black broken line, λem = 613 nm) spectra of Eu(III) complex (2) in CH2Cl2 (3.0 × 10−5 M).