Aggregation-induced quenching often restricts emissive
performance
of optically active solid materials with embedded fluorescent dyes.
Delignified and nanoporous wood readily adsorbs organic dyes and is
investigated as a host material for rhodamine 6G (R6G). High concentration
of R6G (>35 mM) is achieved in delignified wood without any ground-state
dye aggregation. To evaluate emissive performance, a solid-state random
dye laser is prepared using the dye-doped wood substrates. The performance
in terms of lasing threshold and efficiency was improved with increased
dye content due to the ability of delignified wood to disperse R6G.