Alkyne-Linked Spirobifluorene D–π–A–π–D Emitters: Synthesis, Solution-State ICT Photophysics, and Comparative Acceptor Effects
The construction of sterically demanding donor-acceptor architectures remains a significant challenge in organic materials chemistry. Herein, two D-π-A-π-D type compounds, BTD-DPA and QXN-DPA, incorporating a 9,9′-spirobifluorene core with benzothiadiazole and quinoxaline acceptor units, were synthesized and investigat...