一种含二甲氨基查尔酮基团的三硫代碳酸酯的合成及其荧光特性

Synthesis and fluorescence properties of trithiocarbonate with 4′-N,N′-dimethylaminochalcone group

通过4-羟基-4'-二甲氨基查尔酮和S-十二烷基-S'-(α,α'-二甲基-α″-乙酸)-三硫代碳酸酯在缩合剂DCC(二环己基碳二亚胺)和促进剂DMAP(4-二甲氨基吡啶)作用下,合成了含二甲氨基查尔酮基团的三硫代碳酸酯,并通过熔点、红外光谱、紫外光谱和核磁共振氢谱对其结构进行了表征。研究了该化合物在不同极性溶剂中的发光特性,结果表明,随着溶剂极性增加,含二甲氨基查尔酮基团的三硫代碳酸酯的紫外-可见特征吸收波长和荧光发射波长均发生红移,荧光强度呈现先升高后下降的特点,其荧光具有溶剂极性敏感的特性。

Trithiocarbonate with 4＇-N, N＇-dimethylaminochalcone group was synthesized by the condensation reaction of S- dodecyl-S＇-（ or, a＇-dimethyl-a＂-acetic acid） -trithioearbonate and 4-hydroxyl-4＇-N, N＇-dimethylaminochalcone at present of DCC and DMAP, and the structure was characterized by melting point, UV-Vis, IR and ＇H NMR spectroscopy. The photoluminescent properties were investigated in several solvents. Both UV-Vis characteristic absorption wavelength and fluorescence emission wavelength redshift with increasing the polarity of solvent, and the intensity of fluorescence emission first increases and then decreases. These results show fluorescence properties with solvent polarity sensitivity possessed by trithioearbonate with 4＇-N, N＇-dimethylaminoehalcone group.