A novel epinephrine biosensor based on gold nanoparticles coordinated polydopamine-functionalized acupuncture needle microelectrode

An electrochemical chlorpromazine sensor based on a gold–copper bimetallic synergetic molecularly imprinted interface on an acupuncture needle electrode

“…Since Li et al completed the first application of in vivo detection using acupuncture needle electrodes, modified electrodes based on acupuncture needles have enabled in vivo detection of 5-HT, 23 dopamine, 24 neuropeptide, 24 H + , 25 norepinephrine, 26 and so on. Our group has fabricated some electrochemical biosensors based on acupuncture needles for the determination of glucose, 27 dopamine, 28 epinephrine, 29 and other substances.…”

Electrochemical Sensing Platform Based on Metal Nanoparticles for Epinephrine and Serotonin

“…The obtained slope is close to the theoretical value of −59 mV/pH for equal numbers of electrons and protons involved in the electrochemical oxidation process. According to previous results [ 25 ], the oxidation of epinephrine is a two electrons—two protons electrochemical process. The anodic peak current is almost the same for pH values from 6 to 8, while a decrease in the peak current is observed for pH values of 4 and 5.…”

A chemically functionalized glass support for gold and silver metallic nanoparticle analysis with LIBS

“…This is perhaps one of the most important results of the study since it is the rst time that this type of functionalized sample support has been applied for the analysis of nanoparticles by LIBS. This simple yet analytically strategic mechanism for nanoparticle attachment based on surface functionalization is widely employed for constructing optical and electrochemical-based biosensors and sensors today, [48][49][50][51] among other relevant applications. [52][53][54] In the case of this study, thiol groups chemically bonded to the glass support have been used to enable the selective capture of gold and silver nanoparticles on the surface support, as shown in Fig.…”