• 1,4-Bis(*10H*-benzo[*c*]naphtho[1',2':4,5]furo[3,2-*g*]carbazol-10-yl)benzene **3**

1H NMR (600 MHz, CDCl3): *δ* 8.38 (d, *J* = 8.2 Hz, 2H), 8.31 (d, *J* = 8.2 Hz, 2H), 8.00–8.04 (m, 12H), 7.92 (d, *J* = 8.9 Hz, 2H), 7.85 (d, *J* = 8.9 Hz, 4H), 7.77 (d, *J* = 8.9 Hz, 2H), 7.34–7.39 (m, 4H), 6.95–7.00 (m, 4H); 13C NMR (151 MHz, CDCl3): *δ* 154.75, 153.31, 138.79, 137.93, 137.32, 130.86, 129.79, 129.73, 129.50, 129.15, 128.59, 128.10, 128.05, 128.03, 125.13, 124.67, 124.37, 123.62, 120.07, 117.98, 117.77, 116.64, 112.65, 111.58, 109.45, 109.06 (Two carbons overlapped); DEPT-135 NMR (151 MHz, CDCl3): *δ* 129.79, 129.15, 128.59, 128.09, 128.05, 128.03, 125.13, 124.67, 124.37, 123.61, 112.66, 111.58, 109.44, 109.06 (One carbon overlapped); HRMS (APCI): calcd for C58H32N2O2: *m/z* 789.2537 [M + H]+, found 789.2542; IR (KBr): 3043, 2926, 2856, 1714, 1594, 1500, 1417, 1355, 1209, 805 cm<sup>−</sup>1; mp: 291–292 ◦C.
