7-（4-氰苯）偶氮-10-羟基苯并喹啉的合成及对 F－的裸眼识别研究

摘要

An azo compound 7-(4-cyanophenyl)azo-10-hydroxybenzo[h]quinoline(host Ⅰ)was synthesized. The effects of anions such as F- ,Cl- ,Br- ,I- ,Ac- and HSO-4 on ultraviolet absorption spectrum and color of host Ⅰ solution were investigated.Recognition mechanism was studied by 1 HNMR titration experiment.Re-sults indicated that,host Ⅰ could selectively bind to F- .When proper dosage of F- was added,the color of the solution changed from yellow to purple,and then naked eye recognition of F- achieved.The hybrid solution pro-duced a new absorption peak,and equal absorption points indicated the host Ⅰ-F- complex was formed with a certain ratio.There was a linear relationship between the absorbance intensity of the system and the concentra-tion of F- in a certain range.%合成了偶氮化合物7-（4-氰苯）偶氮-10-羟基苯并喹啉（主体Ⅰ），研究了不同阴离子（F－、Cl－、Br－、I－、Ac－、HSO－4）对主体Ⅰ紫外吸收光谱及溶液颜色的影响，并通过1 HNMR 滴定实验对识别机理进行了探讨。结果表明，主体Ⅰ可以选择性识别 F－：加入适量的 F－后，溶液颜色由黄色（主体Ⅰ的颜色）变成了紫红色（主体-F－配合物的颜色），说明主体Ⅰ能够裸眼识别 F－；主体Ⅰ的紫外吸收光谱中生成了新的吸收峰；等吸收点表明主体 I 与 F－是以一定的配比形成了新的配合物；吸收峰的强度与 F－浓度在一定范围内呈线性关系。