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Ghalami F, Dohmen PM, Krämer M, Elstner M, Xie W. Nonadiabatic Simulation of Exciton Dynamics in Organic Semiconductors Using Neural Network-Based Frenkel Hamiltonian and Gradients. J Chem Theory Comput 2024; 20:6160-6174. [PMID: 38976696 DOI: 10.1021/acs.jctc.4c00220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
In this study, we present a multiscale method to simulate the propagation of Frenkel singlet excitons in organic semiconductors (OSCs). The approach uses neural network models to train a Frenkel-type Hamiltonian and its gradient, obtained by the long-range correction version of density functional tight-binding with self-consistent charges. Our models accurately predict site energies, excitonic couplings, and corresponding gradients, essential for the nonadiabatic molecular dynamics simulations. Combined with the fewest switches surface hopping algorithm, the method was applied to four representative OSCs: anthracene, pentacene, perylenediimide, and diindenoperylene. The simulated exciton diffusion constants align well with experimental and reported theoretical values and offer valuable insights into exciton dynamics in OSCs.
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Affiliation(s)
- Farhad Ghalami
- Institute of Physical Chemistry (IPC), Karlsruhe Institute of Technology, Kaiserstr. 12, 76131 Karlsruhe, Germany
- Institute of Nano Technology (INT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Philipp M Dohmen
- Institute of Physical Chemistry (IPC), Karlsruhe Institute of Technology, Kaiserstr. 12, 76131 Karlsruhe, Germany
| | - Mila Krämer
- Institute of Physical Chemistry (IPC), Karlsruhe Institute of Technology, Kaiserstr. 12, 76131 Karlsruhe, Germany
| | - Marcus Elstner
- Institute of Physical Chemistry (IPC), Karlsruhe Institute of Technology, Kaiserstr. 12, 76131 Karlsruhe, Germany
- Institute of Nano Technology (INT), Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology, Kaiserstr. 12, 76131 Karlsruhe, Germany
| | - Weiwei Xie
- Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), State Key Laboratory of Advanced Chemical Power Sources, College of Chemistry, Nankai University, Tianjin 300071, China
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Pérez‐Jiménez ÁJ, Sancho‐García JC. Theoretical Insights for Materials Properties of Cyclic Organic Nanorings. ADVANCED THEORY AND SIMULATIONS 2020. [DOI: 10.1002/adts.202000110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Canola S, Graham C, Pérez-Jiménez ÁJ, Sancho-García JC, Negri F. Charge transport parameters for carbon based nanohoops and donor-acceptor derivatives. Phys Chem Chem Phys 2019; 21:2057-2068. [PMID: 30638227 DOI: 10.1039/c8cp06727a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of donor-acceptor (D-A) moieties on magnitudes such as reorganization energies and electronic couplings in cycloparaphenylene (CPP) carbon based nanohoops (i.e. conjugated organic molecules with cyclic topology) is highlighted via model computations and analysis of the available crystalline structure of N,N-dimethylaza[8]CPP. For the sake of comparison, intra-molecular and inter-molecular charge transport parameters are concomitantly modelled for the recently determined herringbone polymorph of [6]CPP, along with [8]CPP and [12]CPP. The peculiar contribution of low frequency vibrations to intramolecular reorganization energies is also disclosed by computing the Huang-Rhys factors for the investigated [n]CPPs and the N,N-dimethylaza derivative. In contrast with most planar organic semiconductors where the layer in which molecules are herringbone arranged identifies the high-mobility plane, nanohoops disclose inter-layer electronic couplings larger than the intra-layer counterparts. Charge transfer rate constants modelled with three different approaches (Marcus, Marcus-Levich-Jortner and spectral overlap) suggest that D-A nanohoops, owing to orbital localization, may be more efficient for charge transport than [n]CPPs for suitable solid phase arrangements.
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Affiliation(s)
- Sofia Canola
- Dipartimento di Chimica 'G. Ciamician', Università di Bologna, Via F. Selmi 2, 40126 Bologna, Italy.
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Gryn'ova G, Lin KH, Corminboeuf C. Read between the Molecules: Computational Insights into Organic Semiconductors. J Am Chem Soc 2018; 140:16370-16386. [PMID: 30395466 PMCID: PMC6287891 DOI: 10.1021/jacs.8b07985] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
![]()
The
performance and key electronic properties of molecular organic
semiconductors are dictated by the interplay between the chemistry
of the molecular core and the intermolecular factors of which manipulation
has inspired both experimentalists and theorists. This Perspective
presents major computational challenges and modern methodological
strategies to advance the field. The discussion ranges from insights
and design principles at the quantum chemical level, in-depth atomistic
modeling based on multiscale protocols, morphological prediction and
characterization as well as energy-property maps involving data-driven
analysis. A personal overview of the past achievements and future
direction is also provided.
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Affiliation(s)
- Ganna Gryn'ova
- Laboratory for Computational Molecular Design, Institute of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Kun-Han Lin
- Laboratory for Computational Molecular Design, Institute of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland.,Laboratory for Computational Molecular Design and National Center for Computational Design and Discovery of Novel Materials (MARVEL) , École Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Clémence Corminboeuf
- Laboratory for Computational Molecular Design, Institute of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland.,Laboratory for Computational Molecular Design and National Center for Computational Design and Discovery of Novel Materials (MARVEL) , École Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
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Partovi-Azar P, Kaghazchi P. Time-dependent density functional theory study on direction-dependent electron and hole transfer processes in molecular systems. J Comput Chem 2017; 38:698-703. [DOI: 10.1002/jcc.24730] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/10/2016] [Accepted: 12/19/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Pouya Partovi-Azar
- Institute of Chemistry and Biochemistry, Physical and Theoretical Chemistry, Freie Universität Berlin; Takustr. 3 Berlin 14195 Germany
| | - Payam Kaghazchi
- Institute of Chemistry and Biochemistry, Physical and Theoretical Chemistry, Freie Universität Berlin; Takustr. 3 Berlin 14195 Germany
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