2014
DOI: 10.1021/jz500150y
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Abstract: Electron-transfer kinetics of the thermophilic protein Plastocyanin from Phormidium laminosum adsorbed on 1,ω-alkanedithiol self-assembled monolayers (SAMs) deposited on gold have been investigated. The standard electron-transfer rate constant has been determined as a function of electrode-protein distance and solution viscosity over a broad temperature range (0-90 °C). For either thin or thick SAMs, the electron-transfer regime remains invariant with temperature, whereas for the 1,11-undecanethiol SAM of inte… Show more

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Cited by 7 publications
(3 citation statements)
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References 59 publications
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“…As shown in the previous studies, a [ ) tetrachloro complexes agree with the steady-state spectra, Figure 1 and Table 2. Similarly to copper(II) chloro complexes, tetraethylammonium chloride species, which are the source of chloride ions, are present as NEt 4 + Cl − ion pairs in dichloromethane solutions and as fully separated ions in acetonitrile solutions (association constants, K a = 12 and 92 000 M 2− complexes in the LMCT excited states. Indeed, quantum yields of the formation of copper(I) complexes, products of the radical dissociation do not exceed 0.5% 32,44 and are significantly smaller than quantum yields of the formation of the ionic dissociation products.…”
Section: Discussionmentioning
confidence: 99%
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“…As shown in the previous studies, a [ ) tetrachloro complexes agree with the steady-state spectra, Figure 1 and Table 2. Similarly to copper(II) chloro complexes, tetraethylammonium chloride species, which are the source of chloride ions, are present as NEt 4 + Cl − ion pairs in dichloromethane solutions and as fully separated ions in acetonitrile solutions (association constants, K a = 12 and 92 000 M 2− complexes in the LMCT excited states. Indeed, quantum yields of the formation of copper(I) complexes, products of the radical dissociation do not exceed 0.5% 32,44 and are significantly smaller than quantum yields of the formation of the ionic dissociation products.…”
Section: Discussionmentioning
confidence: 99%
“…The induced absorption bands decays to zero concurrently with recovery of the groundstate bleach and without any spectral reshaping. The decay of the ΔA bands is single-exponential, ΔA(t) = ΔA 0 ·e −k obs t (Figure 4 and 5), where the pseudo-first-order rate constant (k obs ) is found to linearly depend on the concentration of NEt 4 Cl, k obs = k q · [NEt 4 Cl], Figure 6. On the basis of the k obs values resulting from these single-exponential fits, the bimolecular rate constants, k q , are evaluated to be (9.0 ± 0.1) × 10 The Journal of Physical Chemistry B Article Diffusion-Controlled Rate Constants.…”
Section: Experimental and Computational Methodsmentioning
confidence: 99%
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