Salla, Cristian A. M.Farias, GiliandroSturm, LudmillaDechambenoit, PierreDurola, FabienMurat, AydemirBechtold, Ivan H.2026-03-262026-03-2620221463-90761463-908410.1039/d2cp04658j2-s2.0-85144589766https://doi.org/10.1039/d2cp04658jhttps://hdl.handle.net/20.500.14901/2668Sturm, Ludmilla/0009-0007-4497-4578; Bechtold, Ivan/0000-0001-6393-7245; Monkman, Anew/0000-0002-0784-8640; Farias, Giliano/0000-0003-4818-5940Considering the relevance of room temperature phosphorescent (RTP) materials, we discuss the influence of donor and acceptor groups substituted on to a twisted three-fold symmetric hydrocarbon homotruxene, which presents a persistent RTP, even in the absence of donor or acceptor moieties, under ambient conditions as a result of the twisted pi-system. Compared to a fluorine acceptor, a donor methoxy group increases the phosphorescence decay rate in solution, while in the solid-state, molecular aggregation and packing yield a very persistent phosphorescence visible by the eye. The RTP of the intrinsically apolar homotruxene is found to be modulated by polar substituents, whose main impact on the solid-state emission is due to altered packing in the crystal.eninfo:eu-repo/semantics/openAccessArticle