Design and preparation of a non-enzymatic hydrogen peroxide sensor based on a novel rigid chain liquid crystalline polymer/reduced graphene oxide composite
Design and preparation of a non-enzymatic hydrogen peroxide sensor based on a novel rigid chain liquid crystalline polymer/reduced graphene oxide composite
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DOI：
10.1039/c5ra10540d
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发表时间：
2015-07
期刊：
影响因子：
3.9
通讯作者：
Yaqing Yang;He-Lou Xie;Tang Jun;Shuai Tang;Jie Yi;Hailiang Zhang
中科院分区：
文献类型：
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作者：
Yaqing Yang;He-Lou Xie;Tang Jun;Shuai Tang;Jie Yi;Hailiang Zhang
利用刚性链液晶聚合物（LC）和还原氧化石墨烯（rGO）复合材料，开发了一种新型的非酶促过氧化氢（H2 O2）传感器。首先，我们合成了一种以二茂铁基为侧基的新型刚性链状液晶聚合物。单体及相应聚合物的化学结构经1H NMR、FTIR和1C NMR确证。用差示扫描量热法（DSC）和偏光显微镜（POM）研究了聚合物的液晶行为。通过循环伏安法（CV）、电化学阻抗谱（EIS）、典型电流响应（IT）等测试手段对PFECS/rGO膜进行了电化学表征。聚合物中的二茂铁基表现出良好的电化学行为，修饰电极对H2 O2的还原具有较好的电催化活性。该工作表明，开发的电化学传感器检测H2 O2具有更高的灵敏度117.142 μA mM−1 cm−2和更宽的线性范围1 × 10−5 M至1.9 × 10−4 M。
A novel non-enzymatic hydrogen peroxide (H2O2) sensor was developed using a rigid chain liquid crystalline (LC) polymer and reduced graphene oxide (rGO) composite. Firstly, we synthesized a novel rigid chain LC polymer with ferrocenyl as the side group. The chemical structures of the monomer and the corresponding polymer were confirmed by 1H NMR, FTIR and 1C NMR. LC behavior of the polymer was investigated by differential scanning calorimetry (DSC) and polarized light microscopy (POM). The electrochemical characterization of the PFECS/rGO films was performed by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), typical amperometric response (IT) measurements. The ferrocenyl in polymer presented excellent electrochemical behavior, and the modified electrode exhibited preferable electrocatalytic activity to the reduction of H2O2. The work revealed that the developed electrochemical sensor detected H2O2 with a higher sensitivity 117.142 μA mM−1 cm−2 and broader linear range between 1 × 10−5 M to 1.9 × 10−4 M.