期刊
BIOSENSORS & BIOELECTRONICS
卷 99, 期 -, 页码 34-39出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2017.07.037
关键词
Molecularly imprinted; Ionic liquid; Neuron specific enolase; Gold nano array; Electrochemical sensor
类别
资金
- National Natural Science Foundation of China [21675175, 21275166]
- Natural Science Foundation of Hubei Province, China [2015CFA092]
A molecularly imprinted electrochemical sensor for neuron specific enolase (NSE) was developed by electrochemical polymerizing ionic liquid, which was functionalized with pyrrole moiety, in between gold nanoarrays. A well-defined 3D structured gold nanoarray was fabricated on a glassy carbon electrode (GCE) surface by using template-assisted electrochemical deposition technique. 1-(3-mercaptopropyl)-3-vinyl-imidazolium tetrafluoroborate was self-assembled onto the surface of gold nanoarrays to produce active sites for anchoring the molecularly imprinted film. Subsequently, an electrochemical polymerization procedure was carried out in an aqueous solution containing 1,3-di(3-N-pyrrolpropyl)imidazolium bromine ionic liquid and neuron specific enolase (NSE). After removing NSE templates, a molecularly imprinted, sensor was successfully fabricated. The sensor showed high selectivity and sensitivity towards NSE, produced a linear response in the concentration range from 0.01 to 1.0 ng mL(-1) and had a detection limit of 2.6 pg mL(-1) with an incubation time of 15 min. The developed sensor was demonstrated successful in determining NSE in clinical serum samples.
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