Voltammetric Response of Glutathione and 3-Mercaptopropionic Acid Self-Assembled Monolayer Modified Gold Electrodes to Cu(II)

Three Dimensional Monolayer of 3‐Mercaptopropionic Acid Assembled on Gold Nanoparticles for Electrochemical Determination of Trace Cu(II)

“…Moreover, it has been demonstrated that MPA monolayer-based electrode shows an attractive ability to efficiently preconcentrate trace of Cu(II) from solution, allowing a very simple and reproducible method for trace copper determination (Freire and Kubota 2004). When the mixture of glutathione (GSH) and 3-mercaptopropionic acid (MPA) is utilized, the resulting SAMs modified gold electrode has shown to improve the sensitivity and selectivity for Cu(II) on GSH monolayer modified electrode (Zeng et al 2002).…”

Quartz crystal microbalance determination of trace metal ions in solution

“…SAM modified electrodes show better sensitivity and selectivity for copper ions in solution in the range of 10 p M to 0.1 mM without pre-concentration [94]. Liu et al [95] reported a detection lim it of 0.39 nM for Cu2+ employing Osteryoung square wave voltammetry (OSWV) at a cysteine monolayer-coated gold electrode.…”

Adsorption mechanisms of l-Glutathione on Au and controlled nano-patterning through Dip Pen Nanolithography

“…Interaction of alkaline earth metal cations (upon addition of selected neurotransmitters and cationic drugs) with GSH monolayer leads to the opening of ion gates in the GSH films, by redox ion probes [44]. Copper(II) and lanthanide-(III) ions were also found to bind strongly to GSHmodified Au electrodes [45,46]. Theoretical studies implying free GSH or GSH/Au substrate systems were also employed in the last years.…”