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Prlj A, Curchod BF, Fabrizio A, et al. Qualitatively Incorrect Features in the TDDFT Spectrum of Thiophene-Based Compounds. J Phys Chem Lett. 2014;6(1):13-21doi: 10.1021/jz5022087.
Prlj, A., Curchod, B. F., Fabrizio, A., Floryan, L., & Corminboeuf, C. (2015). Qualitatively Incorrect Features in the TDDFT Spectrum of Thiophene-Based Compounds. The journal of physical chemistry letters, 6(1), 13-21. https://doi.org/10.1021/jz5022087
Prlj, Antonio, et al. "Qualitatively Incorrect Features in the TDDFT Spectrum of Thiophene-Based Compounds." The journal of physical chemistry letters vol. 6,1 (2015): 13-21. doi: https://doi.org/10.1021/jz5022087
Prlj A, Curchod BF, Fabrizio A, Floryan L, Corminboeuf C. Qualitatively Incorrect Features in the TDDFT Spectrum of Thiophene-Based Compounds. J Phys Chem Lett. 2015 Jan 02;6(1):13-21. doi: 10.1021/jz5022087. Epub 2014 Dec 09. PMID: 26263085; PMCID: PMC4598019.
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J Phys Chem Lett. 2015 Jan 02;6(1):13-21. doi: 10.1021/jz5022087. Epub 2014 Dec 09.

Qualitatively Incorrect Features in the TDDFT Spectrum of Thiophene-Based Compounds.

The journal of physical chemistry letters

Antonio Prlj, Basile F E Curchod, Alberto Fabrizio, Leonard Floryan, Clémence Corminboeuf

Affiliations

  1. †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
  2. ‡Department of Chemistry, Stanford University, Stanford, California 94305, United States.
  3. §Departement Chemie und Angewandte Biowissenschaften, Eidgenössische Technische Hochschule Zürich, CH-8093 Zürich, Switzerland.

PMID: 26263085 PMCID: PMC4598019 DOI: 10.1021/jz5022087

Abstract

Ab initio molecular electronic structure computations of thiophene-based compounds constitute an active field of research prompted by the growing interest in low-cost materials for organic electronic devices. In particular, the modeling of electronically excited states and other time-dependent phenomena has moved toward the description of more realistic albeit challenging systems. We demonstrate that due to its underlying approximations, time-dependent density functional theory predicts results that are qualitatively incorrect for thiophene and thienoacenes, although not for oligothiophene chains. The failure includes spurious state inversion and excitation characters, wrong distribution of oscillator strengths and erroneous potential energy surfaces. We briefly analyze possible origins of this behavior and identify alternative methods that alleviate these problems.

Keywords: absorption spectra; oligothiophenes; organic electronics; thienoacenes; thiophene; time-dependent density functional theory

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