Effect of Ionic Strength on the Electrochemical Behavior of Glutathione on a Phospholipid Self-Assembled Monolayer on Mercury

Langmuir ◽  
2000 ◽  
Vol 16 (11) ◽  
pp. 5148-5153 ◽  
Author(s):  
R. Herrero ◽  
J. L. Barriada ◽  
J. M. López-Fonseca ◽  
M. R. Moncelli ◽  
M. E. Sastre de Vicente
Keyword(s):  
Ionic Strength ◽  
Electrochemical Behavior ◽  
Self Assembled Monolayer ◽  
Self Assembled

Electrochemical behavior of inorganic–organic hybrid polyoxometalate ((Cys)3[PW12O40]) nanostructure self-assembled monolayer on polycrystalline gold electrode surfaces

2019 ◽  
Vol 43 (3) ◽  
pp. 1388-1397 ◽  
Author(s):  
Somayeh Dianat ◽  
Abdolhamid Hatefi-Mehrjardi ◽  
Kourosh Mahmoodzadeh
Keyword(s):  
Synergistic Effect ◽  
Electrochemical Behavior ◽  
Gold Electrode ◽  
Electrochemical Activity ◽  
Self Assembled Monolayer ◽  
Electrode Surfaces ◽  
Organic Hybrid ◽  
Polycrystalline Gold ◽  
Self Assembled

The synergistic effect of HPW and Cys enhanced electrochemical activity of Au-(Cys)PW electrode.

scholarly journals Luminescent acetylthiol derivative tripodal osmium(II) and iridium(III) complexes: Spectroscopy in solution and on surfaces

2011 ◽  
Vol 83 (4) ◽  
pp. 779-799 ◽  
Author(s):  
Srinidhi Ramachandra ◽  
Federico Polo ◽  
Fabio Edafe ◽  
Klaus C. Schuermann ◽  
Christian A. Nijhuis ◽  
...  
Keyword(s):  
Electrochemical Behavior ◽  
Metal Ion ◽  
Type Structure ◽  
Thiol Groups ◽  
Tunneling Junction ◽  
Self Assembled Monolayer ◽  
Entire Structure ◽  
Rigid Spacer ◽  
Phenanthroline Ligand ◽  
Self Assembled

Luminescent Os(II) and Ir(III) complexes containing a tripodal-type structure terminalized with three thiol derivatives are described. The tripod is introduced through derivatization, with a rigid spacer, of a phenanthroline ligand coordinated to the metal ion, and the entire structure possesses axial geometry. The geometry of the complexes combined with the three anchoring sites, the thiol groups, allows the complexes to adopt an almost perpendicular arrangement to the surfaces and the formation of a well-packed monolayer on Au substrates. The photophysical and electrochemical behavior of the complexes is studied in solution and on surfaces. Furthermore, a self-assembled monolayer (SAM) of Os(II) complexes on an ultraflat Au surface is used to fabricate a metal–molecule–metal junction with Au and In Ga eutectic as electrodes. The Os(II) SAM in the tunneling junction exhibits rectification behavior which is opposite in direction to that which we have previously shown for Ru(II) SAMs.

Enhanced Second Order Nonlinear Optical Susceptibilities in Ionically Self-Assembled Films Incorporating Dianionic Molecules

2000 ◽  
Vol 660 ◽  
Author(s):  
P.J. Neyman ◽  
M.T. Guzy ◽  
S. Shah ◽  
K.E. Van Cott ◽  
R.M. Davis ◽  
...  
Keyword(s):  
Ionic Strength ◽  
Nonlinear Optical ◽  
Second Order ◽  
Self Assembled Monolayer ◽  
Polymer Layers ◽  
Charged Polymers ◽  
Nlo Response ◽  
Polar Orientation ◽  
Self Assembled ◽  
Oppositely Charged

ABSTRACTIonically self-assembled monolayer (ISAM) films have been recently shown to spontaneously produce noncentrosymmetric ordering that gives rise to a substantial second order nonlinear optical (NLO) response. Typically, the ISAM films for NLO response are an assemblage of bilayers of oppositely charged polymers whose thickness can be controlled through variation of pH and ionic strength of the immersion solutions. Here, we study the effects of replacing the NLO-active polymer layers with layers of dianionic molecules. Films fabricated exclusively using polyelectrolytes contain some fraction of both randomly oriented and anti-parallel oriented chromophores. The incorporation of dianionic molecules within the ISAM films affords greater χ(2) due to increased net polar orientation of the chromophores.

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