Dynamics of ionic liquid mediated quantised charging of monolayer-protected clusters

Literature Information

Publication Date 2010-04-07
DOI 10.1039/B921368F
Impact Factor 3.676
Authors

Stijn F. L. Mertens, Thomas Wandlowski


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Abstract

We present the first kinetic study of quantised double layer charging of monolayer-protected gold clusters in an ionic liquid. Cyclic voltammetry and electrochemical impedance measurements reveal that kinetic control is involved in the quantised cluster charging in these room temperature melts. The level of kinetic control varies up to one order of magnitude depending on ionic liquid composition, which may have implications for the development of future nanoelectronic devices. By studying the quantised charging process in the chemically relevant permutations of two anions and two cations, we find strong indications that the ionic liquid behaviour is not a linear combination of its composing ions' properties, but is dominated by specific interactions. Based on a Walden plot analysis, we hypothesise that the chemical availability of ions is different in the various liquids, and explains the differences in monolayer-protected gold cluster (MPC) charging rates.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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