Self-assembled monolayers electron transfer

Y. Tian, T. Ariga, N. Takashima, T. Okajima, L. Mao, and T. Ohsaka, Self-assembled monolayers suitable for electron-transfer promotion of copper, zinc-superoxide dismutase. Electrochem. Commun. 6, 609-614 (2004). 

L. Jiang, C.J. McNeil, and J.M. Cooper, Direct electron transfer reaction of glucose oxidase immobilized at a self-assembled monolayer. J. Chem. Soc. Chem. Commun. 1293-1295 (1995). 

Henderson,). ., Feng, S., Ferrence, G.M., Bein, T. and Kubiak, C.P. (1996) Self-assembled monolayers of dithiols, diisoqfanides, and isocyanothiols on gold chemically sticky surfaces for covalent attachment of metal clusters and smdies of interfacial electron transfer. Inorg. 

Gray HB, Winkler JR (1996) Electron transfer in proteins. Annu Rev Biochem 65 537 Fedurco M (2000) Redox reactions of heme-containing metalloproteins dynamic effects of self-assembled monolayers on thermodynamics and kinetics of cytochrome c electron-transfer reactions. Coord Chem Rev 209 263... 

Finally, Majda has investigated a novel inorganic membrane-modified electrode [32]. The membrane used was a microporous alumina prepared by anodizing metallic aluminum in an acidic electrolyte [33]. Majda et al. lined the pores of these membranes with polymers and self-assembled monolayers and studied electron and ion transfer down the modified pore walls to a substrate electrode surface [32]. Martin and his coworkers have used the pores in such membranes as templates to prepare nanoscopic metal, polymer, and semiconductor particles [34],... 

Finally, self-assembled monolayers (SAMs) on gold electrodes constitute electrochemical interfaces of supramolecular structures that efficiently connect catalytic reactions, substrate and product diffusion and heterogeneous electron transfer step when enzymes are immobilised on them. Resulting enzyme-SAM electrodes have demonstrated to exhibit good performance and long-term enzyme stability. 

C. Hortholoary, F. Mine, C. Coudret, J. Bonvoisin, and J.-P. Launay, A new redox site as an alternative to ferrocene to study electron transfer in self-assembled Monolayers Chem. Commun. 1932—1933 (2002). 

Liu, B., A.J. Bard, M.V. Mirkin, and S.E. Creager. 2004. Electron transfer at self-assembled monolayers measured by scanning electrochemical microscopy. J. Am. Chem. Soc. 126 1485-1492. 

As discussed in Chapter 4, a wide variety of functionalized alkane thiols, HS(CH2) -2, where 5 < n < 16, form highly ordered self-assembled monolayers. As illustrated in Figure 5.1, redox-active species can be covalently bound to these bridges. The seminal work of Chidsey [2], Acevedo and Abruna [3] and Finklea and Hanshew [4] has demonstrated that electroactive adsorbed monolayers can exhibit close to ideal reversible electrochemical behavior under a wide variety of experimental conditions of time-scale, temperature, solvent and electrolyte. These studies have elucidated the effects of electron transfer distance, tunneling... 

Figure 5.2 Tafel plots of In k versus overpotential for a mixed self-assembled monolayer containing HS(CH2)i600C-ferrocene and HS(CH2)isCH3 in 1.0 M HCIO4 at three different temperatures V, 1 °C O/ 25 °C , 47°C. The solid lines are the predictions of the Marcus theory for a standard heterogeneous electron transfer rate constant of 1.25 s-1 at 25 °C, and a reorganization energy of 0.85 eV (= 54.8 kj moh1). Reprinted with permission from C. E. D Chidsey, Free energy and temperature dependence of electron transfer at the metal-electrolyte interface, Science, 251, 919-922 (1991). Copyright (1991) American Association for the Advancement of Science...

The development of spontaneously adsorbed and self-assembled monolayers has greatly facilitated investigations into those factors which influence the rate of heterogeneous electron transfer. However, important issues such as the effect of switching... 

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