A sensitive and selective chemiluminescence sensor for the determination of dopamine based on silanized magnetic graphene oxide-molecularly imprinted polymer

作者：Duan, Huimin; Li, Lei; Wang, Xiaojiao; Wang, Yanhui; Li, Jianbo; Luo, Chuannan^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2015, 139: 374-379.

DOI：10.1016/j.saa.2014.12.051

• Chemiluminescence
• Dopamine
• Magnetic graphene oxide
• Molecularly imprinted polymer
• Silanization

Based on silanized magnetic graphene oxide-molecularly imprinted polymer (Si-MG-MIP), a sensitive and selective chemiluminescence sensor for dopamine measurement was developed. Si-MG-MIP, in which silanes was introduced to improve the mass transfer, graphene oxide was employed to improve absorption capacity, Fe3O4 nanoparticles were applied for separation easily and molecularly imprinted polymer was used to improve selectivity, demonstrated the advantages of the sensor. All the composites were confirmed by SEM, TEM, XRD and FUR. Under the optimal conditions of chemiluminescence, dopamine could be assayed in the range of 8.0-200.0 ng/mL with a correlation coefficient of linear regression of 0.9970. The detection limit was 1.5 ng/mL (3 delta) and the precision for 11 replicate detections of 80.0 ng/mL dopamine was 3.4% (RSD). When the sensor was applied in determining dopamine in actual samples, recovery ranged from 94% to 110%, which revealed that the results were satisfactory.

• 出版日期2015-3-15
• 单位山东大学; 济南大学