A Three-Step Kinetic Model for Electrochemical Charge Transfer in the Hopping Regime
Single-step nonadiabatic electron tunneling models are widely used to analyze electrochemical rates through self-assembled monolayer films (SAMs). For some systems, such as nucleic acids, long-range charge transfer can occur in a “hopping” regime that involves multiple charge transfer events and int...
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| Veröffentlicht in: | The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2014-09, Vol.118 (35), p.7579-7589 |
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| container_end_page | 7589 |
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| container_issue | 35 |
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| container_title | The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory |
| container_volume | 118 |
| creator | Yin, Xing Wierzbinski, Emil Lu, Hao Bezer, Silvia de Leon, Arnie R Davis, Kathryn L Achim, Catalina Waldeck, David H |
| description | Single-step nonadiabatic electron tunneling models are widely used to analyze electrochemical rates through self-assembled monolayer films (SAMs). For some systems, such as nucleic acids, long-range charge transfer can occur in a “hopping” regime that involves multiple charge transfer events and intermediate states. This report describes a three-step kinetic scheme to model charge transfer in this regime. Some of the features of the three-step model are probed experimentally by changing the chemical composition of the SAM. This work uses the three-step model and a temperature dependence of the charge transfer rate to extract the charge injection barrier for a SAM composed of a 10-mer peptide nucleic acid that operates in the hopping regime. |
| doi_str_mv | 10.1021/jp502826e |
| format | Article |
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| ispartof | The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, 2014-09, Vol.118 (35), p.7579-7589 |
| issn | 1089-5639 1520-5215 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1560579133 |
| source | MEDLINE; ACS Publications |
| subjects | Algorithms Computer Simulation Electrons Kinetics Models, Chemical Models, Genetic Peptide Nucleic Acids - chemistry Temperature |
| title | A Three-Step Kinetic Model for Electrochemical Charge Transfer in the Hopping Regime |
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