Jiang Lu-Lu, Niu Xia, Pei Wen-Yuan, Ma Jian-Fang
Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, China.
Inorg Chem. 2023 Aug 14;62(32):12803-12813. doi: 10.1021/acs.inorgchem.3c01432. Epub 2023 Aug 3.
In this paper, a thiacalix[4]arene complex [Zn(TIT4A)L]·4DMF·2CHOH (HL = 4,4'-oxybisbenzoic acid) (Zn-TIT4A-L) was synthesized by a solvothermal method. The composites were prepared by combining Zn-TIT4A-L with reduced graphene oxide (RGO), mesoporous carbon (MC), and multi-walled carbon nanotubes (MWCNTs), respectively. Three representative composites are Zn-TIT4A-L@RGO(1:1), Zn-TIT4A-L@MC(1:2), and Zn-TIT4A-L@MWCNT(1:2). X-ray diffraction and scanning electron microscopy characterized their structures and morphologies. The results showed that three composites were successfully prepared, and the crystals of the complex remained in the composites. The electrochemical properties of the composites were characterized by electrochemical impedance spectroscopy and cyclic voltammetry. The results indicated that they had good electrocatalytic activity and conductivity. Among them, Zn-TIT4A-L@RGO(1:1) had the best performance and was used for the quantitative detection of flutamide (FTA). The linear range of detection is 0.1-200 μM, and the limit of detection is 0.015 μM. At the same time, the sensor also had good reproducibility, anti-interference, and stability. The sensor was also used for the detection of FTA in lake water, human urine, and serum with a satisfactory recovery rate. The possible mechanism of electrochemical detection of FTA was also discussed.
本文采用溶剂热法合成了一种硫杂杯[4]芳烃配合物[Zn(TIT4A)L]·4DMF·2CHOH（HL = 4,4'-氧代双苯甲酸）（Zn-TIT4A-L）。通过将Zn-TIT4A-L分别与还原氧化石墨烯（RGO）、介孔碳（MC）和多壁碳纳米管（MWCNTs）结合制备了复合材料。三种代表性的复合材料分别为Zn-TIT4A-L@RGO(1:1)、Zn-TIT4A-L@MC(1:2)和Zn-TIT4A-L@MWCNT(1:2)。通过X射线衍射和扫描电子显微镜对其结构和形貌进行了表征。结果表明，三种复合材料均成功制备，且配合物的晶体保留在复合材料中。通过电化学阻抗谱和循环伏安法对复合材料的电化学性质进行了表征。结果表明它们具有良好的电催化活性和导电性。其中，Zn-TIT4A-L@RGO(1:1)性能最佳，用于氟他胺（FTA）的定量检测。检测线性范围为0.1 - 200 μM，检测限为0.015 μM。同时，该传感器还具有良好的重现性、抗干扰性和稳定性。该传感器还用于湖水、人尿和血清中FTA的检测，回收率令人满意。还讨论了FTA电化学检测的可能机理。
