含缩氨基硫脲席夫碱侧链的苯并菲阴离子受体的合成及识别研究  

Study on Synthesis and Recognition of the Receptors of Triphenylene Anions Bearing Thiosemicarbazone Schiff Base Side Chain

作　　者：魏席 刘峥[1,2] 郭征楠 李佩峰[1,2] 

机构地区：[1]广西电磁化学功能物质重点实验室,桂林541004 [2]桂林理工大学化学与生物工程学院,桂林541004

出　　处：《理化检验（化学分册）》2016年第10期1117-1122,共6页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：国家自然科学基金(21266006);广西自然科学基金(2012GXNSFAA053034)

摘　　要：合成了3种含缩氨基硫脲席夫碱侧链的苯并菲阴离子受体R1、R2和R3,通过核磁共振氢谱法和红外光谱法对合成的阴离子受体进行结构表征。采用比色法、紫外-可见吸收光谱法和荧光光谱法研究所合成的阴离子受体的阴离子识别能力。识别试验表明:受体R1,R2和R3均能有效识别F-,其中R3还可以对Ac-和H2PO4-的存在给予响应。在R3紫外-可见吸收光谱中,随着3种阴离子的加入,原345nm处吸收峰逐渐减弱,同时在455nm处出现新的吸收峰。合成的3种阴离子受体,通过氢键作用来实现对阴离子的结合与识别,F-因电负性最强,最易与受体硫脲部形成氢键,因而识别效果最佳。Three thiosemicarbazide schiff base side chain bearing triphenylene anion receptors （R1, R2 and R3） were synthesized. Their structures were characterized by 1H-NMR and IR, and their capability of recognition of anions were studied by colorimetry, UV-Vis absorption spectrometry and fluorospectrometry. As shown by the experimental results, all of the three receptors displayed efficient recognition toward F-, and R3 also shown response to Ac- and H2PO4-. It was shown in the UV-Vis absorption spectrogram of R3, upon addition of the 3 anions, the original absorption peak at 345 nm was gradually weakened, while a new absorption peak at 455 nm appeared. The 3 anion receptors were combined with the anion F- through hydrogen bond in the thiourea group of the receptors, while the anion F- behaved to have strong electronegativity, thus efficient recognition of F- by the 3 receptors was attained.

关 键 词：阴离子识别 苯并菲 缩氨基硫脲 

分 类 号：O657.3[理学—分析化学]