Höglund Martin, Baitenov Adil, Berglund Lars A, Popov Sergei
Department of Fibre and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, Stockholm SE-100 44, Sweden.
Department of Applied Physics, KTH Royal Institute of Technology, Stockholm 114 19, Sweden.
ACS Appl Opt Mater. 2023 May 15;1(5):1043-1051. doi: 10.1021/acsaom.3c00100. eCollection 2023 May 26.
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.
聚集诱导猝灭常常限制了嵌入荧光染料的光学活性固体材料的发光性能。脱木质素的纳米多孔木材易于吸附有机染料，并被研究作为罗丹明6G（R6G）的主体材料。在脱木质素木材中可实现高浓度的R6G（>35 mM），且不存在任何基态染料聚集现象。为了评估发光性能，使用掺杂染料的木材基板制备了固态随机染料激光器。由于脱木质素木材具有分散R6G的能力，随着染料含量的增加，激光阈值和效率方面的性能得到了改善。
