The electrochemical behavior of self-assembled n-dodecanethiol monolayer and n-dodecanethiol/phosphatidylcholine hybrid bilayer modified HMDE in different concentration of Fe(CN)63-/4- solutions has been studied by us...The electrochemical behavior of self-assembled n-dodecanethiol monolayer and n-dodecanethiol/phosphatidylcholine hybrid bilayer modified HMDE in different concentration of Fe(CN)63-/4- solutions has been studied by using cyclic voltammetry and electrochemical impedance spectroscopy measurements. The equivalent circuit of different system have been put forward. We also calculate the normal electron tunneling rate constant k0 and the apparent thickness d of the membrane.展开更多
A novel sandwich\|type compound, Na\-\{12\}\[Fe\-4(H\-2O)\-2(As\-2W\-\{15\}O\-\{56\})\-2\]\538H\-2O(denoted as Fe\-4As\-4W\-\{30\}) was synthesized. The compound was well characterized by means of IR, UV\|Vis, \{\{\}\...A novel sandwich\|type compound, Na\-\{12\}\[Fe\-4(H\-2O)\-2(As\-2W\-\{15\}O\-\{56\})\-2\]\538H\-2O(denoted as Fe\-4As\-4W\-\{30\}) was synthesized. The compound was well characterized by means of IR, UV\|Vis, \{\{\}\+\{183\}W NMR\} and elemental analyses. Redox electrochemistry of the compound has been studied in acid buffer solutions using cyclic voltammetry(CV). The compound containing multilayer films has been fabricated on the 4\|aminobenzoic acid(4\|ABA) modified glassy carbon electrode(GCE) surface by alternate deposition with a quaternized poly(4\|vinylpyridine) partially completed with \[Os(bpy)\-2Cl\]\+\{2+/-\}(denoted as QPVP\|Os). CV, X\|ray photoelectron spectroscopy(XPS) and UV\|Vis spectroscopy were used to characterize the as\|prepared multilayer films. It is proved that the multilayer films are uniform and stable. The electrocatalytic activities of the multilayer films were investigated on the reduction of two substrates of important analytical interest, NO\+-\-2 and H\-2O\-2.展开更多
文摘The electrochemical behavior of self-assembled n-dodecanethiol monolayer and n-dodecanethiol/phosphatidylcholine hybrid bilayer modified HMDE in different concentration of Fe(CN)63-/4- solutions has been studied by using cyclic voltammetry and electrochemical impedance spectroscopy measurements. The equivalent circuit of different system have been put forward. We also calculate the normal electron tunneling rate constant k0 and the apparent thickness d of the membrane.
文摘A novel sandwich\|type compound, Na\-\{12\}\[Fe\-4(H\-2O)\-2(As\-2W\-\{15\}O\-\{56\})\-2\]\538H\-2O(denoted as Fe\-4As\-4W\-\{30\}) was synthesized. The compound was well characterized by means of IR, UV\|Vis, \{\{\}\+\{183\}W NMR\} and elemental analyses. Redox electrochemistry of the compound has been studied in acid buffer solutions using cyclic voltammetry(CV). The compound containing multilayer films has been fabricated on the 4\|aminobenzoic acid(4\|ABA) modified glassy carbon electrode(GCE) surface by alternate deposition with a quaternized poly(4\|vinylpyridine) partially completed with \[Os(bpy)\-2Cl\]\+\{2+/-\}(denoted as QPVP\|Os). CV, X\|ray photoelectron spectroscopy(XPS) and UV\|Vis spectroscopy were used to characterize the as\|prepared multilayer films. It is proved that the multilayer films are uniform and stable. The electrocatalytic activities of the multilayer films were investigated on the reduction of two substrates of important analytical interest, NO\+-\-2 and H\-2O\-2.
