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实验用0.5 mol的C_6H_(13)Br和0.5 mo L的C_4H_6N_2合成[HEPMIM]Br离子液体,得到棕黄色油状粘稠液体为[HEPMIM]Br,用IR和UV表征了[HEPMIM]Br。[HEPMIM]Br在CH_3CN中发生了红移,实验结果为λmax(H_2O)<λmax(C_2H_5OH)<λmax(CH_3CN),溶剂的极性和p H值影响[HEPMIM]Br的UV光谱。
[HEPMIM] Br was synthesized from 0.5 mol of C_6H_ (13) Br and 0.5 mol of C_4H_6N_2, and the [HEPMIM] Br was obtained as brownish oily viscous liquid. The [HEPMIM] Br was characterized by IR and UV. [HEPMIM] Br redshifted in CH_3CN. The experimental results were λmax (H_2O) <λmax (C_2H_5OH) <λmax (CH_3CN). The polarity and p H of the solvent affected the UV spectrum of [HEPMIM] Br.