Abstract
5-Chloromethyl-8-hydroxyquinoline(CHQ) was first prepared through the reaction between HQ and chloromethylation reagent 1,4-bichloromethoxy-butane(BCMB).The Friedel-Crafts alkylation reaction was carried out between CHQ and polystyrene(PS),and HQ was bounded onto the side chains of PS,obtaining the modified polystyrene HQ-PS.And then,the coordination reaction between HQ-PS and 8-hydroxyquinoline aluminum complex Alq2 that have two HQ ligands was conducted,and the luminous material Alq3-PS,on which 8-hydroxyquinoline aluminum complex Alq3 is attached chemically,was achieved,namely,the polymeric Alq3 was prepared.In order to fully characterize the chemical structure and properties of Alq3-PS,several characterization means were employed such as FTIR,1H-NMR,UV-Vis absorption spectrum and thermogravimetric analysis(TGA),and its luminous performance was determined.In this work,the effects of the main factors on the Friedel-Crafts alkylation reaction were investigated,and the reaction conditions were optimized.The experimental results show that the Friedel-Crafts alkylation reaction between PS and CHQ can proceed successfully,and the suitable reaction conditions are as follows: a temperature of 70℃,with N,N-dimethylformamide(DMF) as solvent,and using SnCl4 as Lewis catalyst.The Alq3-containing polystyrene,Alq3-PS,possesses the fluorescence-emission spectrum of Alq3 and has higher thermostability than polystyrene.
Published Version
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