ar 50 cm 3 of distilled ethanol and 100 cm 3 of distilled toluene were added to produce a solution additionally 0 56 g of a tetrakistriphenylphosphinepalladium complex pd pph 3 4 and 30 cm 3 of saturated sodium carbonate aqueous solution were added and the reaction was performed at 80 u00b0 c for 5 hours after the reaction the reaction solution was cooled to room temperature transferred to a separatory funnel with a volume of 1 liter to perform extraction using toluene and desirably washed with distilled water the toluene layer in the separatory funnel was desirably dried using magnesium sulfate and then purified using silica gel chromatography and reprecipitation the dichloromethane hexane system and the dichloromethane methanol system were used as the solvent that was used to perform purification using reprecipitation thereby 1 5 g of white solid was produced the yield meant the recovery amount was 33 next the polymer molecule of formula 12 was produced as host 3 through the synthesis procedure of the following synthesis example in formula 12 with respect to theoretical values of the synthetic reaction p 3 n 1 a 1 and r 50 the copolymer of fluorene triphenylamine and anthracene shown in formula 12 was synthesized as the host material host 3 for el using the process of synthesizing the raw material according to fig1 and the process of synthesizing the host material according to fig1 the synthesis processes were as follows first 2 g of 9 10 dibromoanthracene 5 9e 3 mol and 50 cm 3 of thf that was subjected to sodium drying were put into a.