Combining molecular dynamics and ab initio quantum-chemistry to describe electron transfer reactions in electrochemical environments
A theoretical model is presented aimed to provide a detailed microscopic description of the electron transfer reaction in an electrochemical environment. The present approach is based on the well-known two state model extended by the novelty that the energy of the two states involved in the electron...
| Authors: | ; ; ; |
|---|---|
| Format: | Article |
| Status: | Published version |
| Publication date: | 2004 |
| Country: | España |
| Institution: | Universidad de Barcelona |
| Repository: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/150637 |
| Online Access: | https://hdl.handle.net/2445/150637 |
| Access Level: | Open access |
| Keyword: | Dinàmica molecular Química quàntica Electroestàtica Molecular dynamics Quantum chemistry Electrostatics |
| _version_ | 1878740632034344960 |
|---|---|
| author | Domínguez-Ariza, David |
| author2 | Hartnig, Christoph Sousa Romero, Carmen Illas i Riera, Francesc |
| author2_role | author author author |
| author_browse | Domínguez-Ariza, David Hartnig, Christoph Illas i Riera, Francesc Sousa Romero, Carmen |
| author_facet | Domínguez-Ariza, David Hartnig, Christoph Sousa Romero, Carmen Illas i Riera, Francesc |
| author_role | author |
| collection | Dipòsit Digital de la UB |
| description | A theoretical model is presented aimed to provide a detailed microscopic description of the electron transfer reaction in an electrochemical environment. The present approach is based on the well-known two state model extended by the novelty that the energy of the two states involved in the electron transfer reaction is computed quantum mechanically as a function of the solvent coordinate, as defined in the Marcus theory, and of the intensity of an external electric field. The solvent conformations defining the reaction coordinate are obtained from classical molecular dynamics and then transferred to the quantum mechanical model. The overall approach has been applied to the electron transfer between a chloride anion and a single crystal Cu(100) electrode. It is found that the solvent exerts a strong influence on the equilibrium geometry of the halide and hence on the relative energy of the two states involved in the electron transfer reaction. Finally, both solvent fluctuations and external field facilitate the electron transfer although solvent effects have a stronger influence. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_d68c9b6ba0c8f790fb1f0b8d34ff2cc2 |
| institution | Universidad de Barcelona |
| instname_str | Universidad de Barcelona |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:diposit.ub.edu:2445/150637 |
| publishDate | 2004 |
| publishDateSort | 2004 |
| publisher | American Institute of Physics |
| publisherStr | American Institute of Physics |
| reponame_str | Dipòsit Digital de la UB |
| spelling | Combining molecular dynamics and ab initio quantum-chemistry to describe electron transfer reactions in electrochemical environments Domínguez-Ariza, David Hartnig, Christoph Sousa Romero, Carmen Illas i Riera, Francesc Dinàmica molecular Química quàntica Electroestàtica Molecular dynamics Quantum chemistry Electrostatics A theoretical model is presented aimed to provide a detailed microscopic description of the electron transfer reaction in an electrochemical environment. The present approach is based on the well-known two state model extended by the novelty that the energy of the two states involved in the electron transfer reaction is computed quantum mechanically as a function of the solvent coordinate, as defined in the Marcus theory, and of the intensity of an external electric field. The solvent conformations defining the reaction coordinate are obtained from classical molecular dynamics and then transferred to the quantum mechanical model. The overall approach has been applied to the electron transfer between a chloride anion and a single crystal Cu(100) electrode. It is found that the solvent exerts a strong influence on the equilibrium geometry of the halide and hence on the relative energy of the two states involved in the electron transfer reaction. Finally, both solvent fluctuations and external field facilitate the electron transfer although solvent effects have a stronger influence. American Institute of Physics https://hdl.handle.net/2445/150637 |
| spellingShingle | Combining molecular dynamics and ab initio quantum-chemistry to describe electron transfer reactions in electrochemical environments Domínguez-Ariza, David Dinàmica molecular Química quàntica Electroestàtica Molecular dynamics Quantum chemistry Electrostatics |
| status_str | publishedVersion |
| title | Combining molecular dynamics and ab initio quantum-chemistry to describe electron transfer reactions in electrochemical environments |
| title_full | Combining molecular dynamics and ab initio quantum-chemistry to describe electron transfer reactions in electrochemical environments |
| title_fullStr | Combining molecular dynamics and ab initio quantum-chemistry to describe electron transfer reactions in electrochemical environments |
| title_full_unstemmed | Combining molecular dynamics and ab initio quantum-chemistry to describe electron transfer reactions in electrochemical environments |
| title_short | Combining molecular dynamics and ab initio quantum-chemistry to describe electron transfer reactions in electrochemical environments |
| title_sort | Combining molecular dynamics and ab initio quantum-chemistry to describe electron transfer reactions in electrochemical environments |
| topic | Dinàmica molecular Química quàntica Electroestàtica Molecular dynamics Quantum chemistry Electrostatics |
| topic_facet | Dinàmica molecular Química quàntica Electroestàtica Molecular dynamics Quantum chemistry Electrostatics |
| url | https://hdl.handle.net/2445/150637 |