CAJ | 학술논문

以邻氨基酚为单体,无电化学活性的柚皮苷为模板分子,采用循环伏安法(扫速为100 mV/s)在碳电极上往复扫描30次,电聚合出具有识别柚皮苷分子功能的敏感膜.以扫描电子显微镜(SEM)、X射线全反射(XRR)及电化学方法对该印迹传感器进行表征.结果表明,印迹传感器敏感膜与非印迹膜在形貌结构和电化学特性方面有明显的不同.此传感器对柚皮苷有较好的选择性,响应快(30 s),在6.0×10~(-5) ～1.4×10~(-4)mol/L范围内呈线性关系,且重现性好(RSD=1.8%,n=5);传感器对柚皮苷的检出限为1.6×10~(-5)mol/L.
이린안기분위단체,무전화학활성적유피감위모판분자,채용순배복안법(소속위100 mV/s)재탄전겁상왕복소묘30차,전취합출구유식별유피감분자공능적민감막.이소묘전자현미경(SEM)、X사선전반사(XRR)급전화학방법대해인적전감기진행표정.결과표명,인적전감기민감막여비인적막재형모결구화전화학특성방면유명현적불동.차전감기대유피감유교호적선택성,향응쾌(30 s),재6.0×10~(-5) ～1.4×10~(-4)mol/L범위내정선성관계,차중현성호(RSD=1.8%,n=5);전감기대유피감적검출한위1.6×10~(-5)mol/L.
The sensor of naringin(NG), a non-electroactive substance, was prepared based on the molecular imprinting technique.Using cyclic voltammetry technique (scan rate is 100 mV/s), the naringin imprinting sensitive film, poly-o-aminophenol was coated on the surface of a graphite electrode in the presence of naringin which was considered as the template, and characterized by SEM and X-ray reflective spectrophotometry (XRR).Using K_3Fe(CN)_6 as an electroactive marker, the electrochemical properties of the NG sensor were investigated by CV, electrochemical impedance spectroscopy (EIS), differential pulse voltammmetric and chronoamperometric.The results showed that the imprinted electrode was significantly different from the non imprinted electrode in morphologies and electrochemical properties, and a linear relationship between the peak current and the naringin concentration was found in the range of 6.0 × 10 ~(-5)-1.4 × 10 ~(-4) mol/L with a detec tion limit of 1.6 × 10 ~(-5) mol/L.Moreover, the imprinted electrode exhibited a good selectivity and rapid response to the naringin template molecules, as well as an excellent reproducibility(RSD = 1.8 %, n=5).