“…Other chemicals were purchased and used without further purification. The three-step synthetic route to O5H- Areephong et al, 2004]) and 5,9dibromodinaphtho[2,1-b:1',2'-d]furan (Br-O5H [Kunugi et al, 2014]) were synthesized according to the reported procedures in the yields of 95% and 98%, respectively, and identified by 1 H NMR spectra. N 5 ,N 5 ,N 9 ,N 9 -tetrakis(4-methoxyphenyl)dinaphtho[2,1-b:1',2'd]furan-5,9-diamine (O5H-OMeDPA) was prepared as follows: to a three-neck round bottom flask were added 5,9-dibromodinaphtho[2,1-b:1',2'-d]furan (852 mg, 2.00 mmol), 4,4′-dimethoxydiphenylamine (962 mg, 4.20 mmol), Pd2(dba)3 (91 mg, 0.10 mmol), P(t-Bu)3•HBF4 (58 mg, 0.20 mmol), NaO(t-Bu) (577 mg, 6.00 mmol), and toluene (50 mL).…”