A potential masking approach in the detection of dopamine on 3-mercaptopropionic acid capped ZnSe quantum dots modified gold electrode in the presence of interferences

Dopamine Sensor Based on a Composite of Silver Nanoparticles Implemented in the Electroactive Matrix of Calixarenes

“…The formation of cathodic peaks was reported for DA detection on modified electrodes containing various electron mediators [41,42]. One of the possible explanations suggests the intramolecular cyclization of oxidized DA to dopaminochrome (Equation 3) and its involvement in the redox exchange [43].…”

3-Mercaptopropionic acid capped ZnSe quantum dot-cytochrome P450 3A4 enzyme biotransducer for 17β-estradiol

“…Electrochemical detection of E2 can further be improved by conjugation of a suitable biomolecule into a quantum dot modified electrode since biomolecules confer high specificity to their target analyte. In our previous report, [35], we described electrocatalytic behavior of 3-mercaptopropionic acid capped zinc selenide (3MPA-ZnSe) quantum dots towards dopamine. In this work, we describe an electrochemical method based on 3MPA-ZnSe and Cytochrome P450 3A4 (CYP3A4) enzyme for detection of E2.…”

Carbon nanotubes-functionalized urchin-like In2S3 nanostructure for sensitive and selective electrochemical sensing of dopamine

“…However, the main challenge to electrochemical detection of DA is its very low concentration and the strong interference resulting from much higher concentration of ascorbic acid (AA) [7]. To resolve this problem, various materials such as polymer film [8][9][10][11], nanoparticles [12][13][14][15][16][17][18] and nanostructures [19][20][21][22][23], have been used to modify working electrode for developing highly sensitive and selective methods. Among these materials, carbon nanotubes, due to the remarkable electrocatalytic properties and large surface area, have attracted great attentions [24][25][26].…”