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|標題:||Ionic Liquid-Modified Copper Phosphate Electrodes for the Detection of α-Amino Acids in a Weakly Alkaline Solution|
|摘要:||The effect of ionic liquid (IL) coating on the electrochemical properties of preoxidized Cu3(PO4)2 (ox-Cu3(PO4)2) electrodes was explored in pH-varied Na2HPO4 solutions. The IL of N-propyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PMPyTFSI) was found to stabilize the redox properties of ox-Cu3(PO4)2 electrodes in weakly acid and alkaline solutions. Furthermore, the amperometric response of the PMPy-TFSI/ox-Cu3(PO4)2 electrodes presented good linearity in the range of 91–500 μM for most α-amino acids (AAs). The PMPy-TFSI/ox-Cu3(PO4)2 electrodes are equipped with a high performance liquid chromatography system to perform the good selectively and specific detection of AAs. The PMPy-TFSI coating shows promise for the wider application of ox-Cu3(PO4)2 electrodes in acidic and alkaline solutions for the detection of electroactive and nonelectroacitve AAs. © 2016 The Electrochemical Society. [DOI: 10.1149/2.1381614jes] All rights reserved.|
|Appears in Collections:||生物產業機電工程學系|
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