Abstract: Compared with the traditional method, an improved process was developed to synthesize 8–hydroxyquioline aluminum (AlQ3) by chemical deposition in nitrogen atmosphere. The acidity of solution and reaction time influenced the yield of AlQ3 strongly. The purity and characteristics of the organic material were investigated with a combination of high performance liquid chromatogram (HPLC), Fourier transformation infrared absorption (FT—IR) spectrum and fluorescence spectrum (FL). At pH value 6.5, and reaction time 120 min, the yield and the purity of AlQ3 were 92.7% and 92.5%, respectively. The aging process of as–synthesized AlQ3 was researched with FT–IR and the aging mechanism was discussed.

摘要： 利用氮气作为保护气体，采用化学沉淀法制备了8－羟基喹啉铝（AlQ3），与普通化学沉淀法制备的AlQ3作了纯度方面的对比。考察了溶液的酸度、反应时间对AlQ3产率的影响。利用高压液相色谱对产品的纯度进行了检测，运用红外光谱、荧光光谱对样品结构进行了表征。结果表明：在工艺改进的情况下，pH值为6.5，反应时间为120 min，AlQ3的产率达到92.7%，纯度可达92.5%，较普通化学沉淀法要高。对所制备的AlQ3老化进行了初步的研究。