“…Further analyses from the mechanistic and quantitative aspects were performed by employing 9,9 -spirobi[9H-fluorene] (SBF) and its brominated derivatives [114]. Spin-coated films of SBF, 2-bromo-SBF (2Br-SBF), 4-bromo-SBF (4Br-SBF), 2,2 -dibromo-SBF (2,2 Br 2 -SBF), 2,7-dibromo-SBF (2,7Br 2 -SBF), 2,2 ,7,7 -tetrabromo-SBF (Br 4 -SBF), 2,2 -bi-9,9'-spirobi[9H-fluorene] (SBF 2 ), and 2,2 :7 ,2 -ter-9,9 -spirobi[9H-fluorene] (SBF 3 ) were irradiated with 350 MeV 129 Xe 26+ ions, and their nanowires were isolated after development with toluene.…”