Solution phase electron transfer versus bridge mediated electron transfer across carboxylic acid terminated thiols

Templated synthesis of silver nanowires based on the layer-by-layer assembly of silver with dithiodipropionic acid molecules as spacers

“…The self-assembly of DTDPA and the electron transfer kinetics of standard redox species across the DTDPA monolayer have been already reported by us [23]. The DTDPA molecule is bifunctional, with sulfur at one end and a carboxylic group at the other end.…”

Electrochemical Self Assembled Monolayer based sensor for Sodium ion using 4-aminobenzo-15-crown-5 as ionophore

“…CV of K3[Fe(CN)6]on SAM of 11-MUA modified gold electrode wherein no redox peak current is observed in comparison to that of bare gold electrode in the potential range of -0.7 to +0.5 in 0.1M KNO3. The significant drop in back ground current may be due to the stable modified 11-mercaptoundecanethiol that reduces the electron transfer rate between the surface of the electrode and the electrolyte solution 21 .The electron transfer behaviour of [Ru(NH3)6]Cl3in 0.1M TBAB clearly indicate that no drop in back ground current of [Ru(NH3)6]Cl3 at SAM surface is due to the electrostatic attraction between the negatively charged SAM and positively charged [Ru(NH3) 6] 3+ in the electrolyte solution 22 . .This sensor surface is selective for sodium ion and there is no interference with lithium, potassium and ammonium ions.…”

Tailoring self-assembled monolayers at the electrochemical interface

“…A small residual current is a strong indication of the presence of pinholes. With a view to analyse the structural organization of SAMs, the solution phase electron transfer across carboxylic acid terminated thiols was studied 22 4-/3-on a bare electrode slows down in the presence of SAM, which is indicated by the increase in peak separation and decrease in peak currents. The blocking of ET kinetics is found to increase with increase in chain length and ET is completely blocked in the case of MUA.…”