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Figure 5
Solid-state (a) PL spectra and (b) 2PPL spectra of 2 and 3. Confocal microscopic images of (c) 2 and (d) 3. The colours, arbitrarily representative of the intensities, are measured by a photo-multiplier tube counter.

IUCrJ
Volume 7| Part 2| March 2020| Pages 324-330
ISSN: 2052-2525
https://doi.org/10.1107/S2052252520001451