期刊
COMPUTATIONAL AND THEORETICAL CHEMISTRY
卷 1070, 期 -, 页码 68-75出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.comptc.2015.07.023
关键词
Organic dyes; DFT benchmark; Oxidation potentials; Electrochemistry
资金
- University of Salerno
- PON (Relight project)
Oxidation free energies of some organic dyes, prototypical for applications in optoelectronic devices, have been computed at the DFT level by using different functionals. A careful comparison with the experimental data shows that standard hybrid functionals are capable of accurate predictions only for short donor-acceptor systems or dyes close to the cyanine limit, whereas high-exchange meta functionals such as M05-2X and M06-2X provide better results for long donor-acceptor push-pull dyes. By properly choosing the functional, the oxidation potential can be predicted with an accuracy of about 50 mV. (C) 2015 Elsevier B.V. All rights reserved.
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