4-硫辛酸酯基-4'-二甲氨基查尔酮的合成及其发光性能研究

通过4-羟基-4＇-二甲氨基查尔酮与硫辛酸在缩合剂DCC和催进剂DMAP作用下,合成了具有二硫键的4-硫辛酸酯基-4＇-二甲氨基查尔酮,并通过熔点和核磁共振氢谱对其结构进行了表征。研究了溶剂极性和溶液浓度对4＇-二甲氨基查尔酮衍生物的发光性能的影响。结果表明,随着发光分子浓度的减小,荧光强度先增大后减小;另外,随着溶剂极性的增加,其紫外最大吸收波长红移,荧光发射波长也红移,荧光发射强度先下降后升高再下降,具有溶剂极性敏感的荧光特性,可用作荧光探针。

Study on the Synthesis and Fluorescent Properties of 4-Lipoate-4'-dimethylamino Chalcone

4-Lipoate-4'-dimethylamino chalcone with disulfide bond was synthesised by 4-hydroxyl-4'-dimethylamino chalcone and lipoic acid at present of DCC and DMAP,and the structure was characterized by melting point and 1H NMR. The effect of solvent polarity and concentration on the light-emitting properties of 4-lipoate-4'-dimethylamino chalcone was investigated. The results show that with the decrease of concentration,the fluorescent emission intensity first increases,and then decreases. With the increase of solv...