Fig. 2: Preparation and photophysical properties of BF2bdk-PMMA and BF2bdk-PMMA/wood system.

a Schematic illustration of the preparation of RTP transparent wood; Photographs of (b) 3F-PMMA/wood, (c) 3F-PMMA, (d) 23F-PMMA/wood and (e) 23FPMMA samples at UV-ON and UV-OFF states; room-temperature steady-state and delayed emission spectra of (f) 3F-PMMA/wood, h 3F-PMMA, j 23F-PMMA and (l) 23F-PMMA; room-temperature phosphorescence decay of (g) 3F-PMMA/wood, (i) 3F-PMMA, (k) 23F-PMMA/wood and (m) 23F-PMMA.