51
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Hourahine B, Aradi B, Blum V, Bonafé F, Buccheri A, Camacho C, Cevallos C, Deshaye MY, Dumitrică T, Dominguez A, Ehlert S, Elstner M, van der Heide T, Hermann J, Irle S, Kranz JJ, Köhler C, Kowalczyk T, Kubař T, Lee IS, Lutsker V, Maurer RJ, Min SK, Mitchell I, Negre C, Niehaus TA, Niklasson AMN, Page AJ, Pecchia A, Penazzi G, Persson MP, Řezáč J, Sánchez CG, Sternberg M, Stöhr M, Stuckenberg F, Tkatchenko A, Yu VWZ, Frauenheim T. DFTB+, a software package for efficient approximate density functional theory based atomistic simulations. J Chem Phys 2020; 152:124101. [PMID: 32241125 DOI: 10.1063/1.5143190] [Citation(s) in RCA: 419] [Impact Index Per Article: 104.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
DFTB+ is a versatile community developed open source software package offering fast and efficient methods for carrying out atomistic quantum mechanical simulations. By implementing various methods approximating density functional theory (DFT), such as the density functional based tight binding (DFTB) and the extended tight binding method, it enables simulations of large systems and long timescales with reasonable accuracy while being considerably faster for typical simulations than the respective ab initio methods. Based on the DFTB framework, it additionally offers approximated versions of various DFT extensions including hybrid functionals, time dependent formalism for treating excited systems, electron transport using non-equilibrium Green's functions, and many more. DFTB+ can be used as a user-friendly standalone application in addition to being embedded into other software packages as a library or acting as a calculation-server accessed by socket communication. We give an overview of the recently developed capabilities of the DFTB+ code, demonstrating with a few use case examples, discuss the strengths and weaknesses of the various features, and also discuss on-going developments and possible future perspectives.
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Affiliation(s)
- B Hourahine
- SUPA, Department of Physics, The University of Strathclyde, Glasgow G4 0NG, United Kingdom
| | - B Aradi
- Bremen Center for Computational Materials Science, University of Bremen, Bremen, Germany
| | - V Blum
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA
| | - F Bonafé
- Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
| | - A Buccheri
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - C Camacho
- School of Chemistry, University of Costa Rica, San José 11501-2060, Costa Rica
| | - C Cevallos
- School of Chemistry, University of Costa Rica, San José 11501-2060, Costa Rica
| | - M Y Deshaye
- Department of Chemistry and Advanced Materials Science and Engineering Center, Western Washington University, Bellingham, Washington 98225, USA
| | - T Dumitrică
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - A Dominguez
- Bremen Center for Computational Materials Science, University of Bremen, Bremen, Germany
| | - S Ehlert
- University of Bonn, Bonn, Germany
| | - M Elstner
- Institute of Physical Chemistry, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - T van der Heide
- Bremen Center for Computational Materials Science, University of Bremen, Bremen, Germany
| | - J Hermann
- Freie Universität Berlin, Berlin, Germany
| | - S Irle
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - J J Kranz
- Institute of Physical Chemistry, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - C Köhler
- Bremen Center for Computational Materials Science, University of Bremen, Bremen, Germany
| | - T Kowalczyk
- Department of Chemistry and Advanced Materials Science and Engineering Center, Western Washington University, Bellingham, Washington 98225, USA
| | - T Kubař
- Institute of Physical Chemistry, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - I S Lee
- Department of Chemistry, Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - V Lutsker
- Institut I - Theoretische Physik, University of Regensburg, Regensburg, Germany
| | - R J Maurer
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - S K Min
- Department of Chemistry, Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - I Mitchell
- Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, South Korea
| | - C Negre
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - T A Niehaus
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
| | - A M N Niklasson
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A J Page
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, Australia
| | - A Pecchia
- CNR-ISMN, Via Salaria km 29.300, 00015 Monterotondo Stazione, Rome, Italy
| | - G Penazzi
- Bremen Center for Computational Materials Science, University of Bremen, Bremen, Germany
| | - M P Persson
- Dassault Systemes, Cambridge, United Kingdom
| | - J Řezáč
- Institute of Organic Chemistry and Biochemistry AS CR, Prague, Czech Republic
| | - C G Sánchez
- Instituto Interdisciplinario de Ciencias Básicas, Universidad Nacional de Cuyo, CONICET, Facultad de Ciencias Exactas y Naturales, Mendoza, Argentina
| | - M Sternberg
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - M Stöhr
- Department of Physics and Materials Science, University of Luxembourg, L-1511 Luxembourg City, Luxembourg
| | - F Stuckenberg
- Bremen Center for Computational Materials Science, University of Bremen, Bremen, Germany
| | - A Tkatchenko
- Department of Physics and Materials Science, University of Luxembourg, L-1511 Luxembourg City, Luxembourg
| | - V W-Z Yu
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA
| | - T Frauenheim
- Bremen Center for Computational Materials Science, University of Bremen, Bremen, Germany
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52
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Hait D, Head-Gordon M. Excited State Orbital Optimization via Minimizing the Square of the Gradient: General Approach and Application to Singly and Doubly Excited States via Density Functional Theory. J Chem Theory Comput 2020; 16:1699-1710. [PMID: 32017554 DOI: 10.1021/acs.jctc.9b01127] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present a general approach to converge excited state solutions to any quantum chemistry orbital optimization process, without the risk of variational collapse. The resulting square gradient minimization (SGM) approach only requires analytic energy/Lagrangian orbital gradients and merely costs 3 times as much as ground state orbital optimization (per iteration), when implemented via a finite difference approach. SGM is applied to both single determinant ΔSCF and spin-purified restricted open-shell Kohn-Sham (ROKS) approaches to study the accuracy of orbital optimized DFT excited states. It is found that SGM can converge challenging states where the maximum overlap method (MOM) or analogues either collapse to the ground state or fail to converge. We also report that ΔSCF/ROKS predict highly accurate excitation energies for doubly excited states (which are inaccessible via TDDFT). Singly excited states obtained via ROKS are also found to be quite accurate, especially for Rydberg states that frustrate (semi)local TDDFT. Our results suggest that orbital optimized excited state DFT methods can be used to push past the limitations of TDDFT to doubly excited, charge-transfer, or Rydberg states, making them a useful tool for the practical quantum chemist's toolbox for studying excited states in large systems.
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Affiliation(s)
- Diptarka Hait
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, California 94720, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Martin Head-Gordon
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, California 94720, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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53
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Hait D, Head-Gordon M. Highly Accurate Prediction of Core Spectra of Molecules at Density Functional Theory Cost: Attaining Sub-electronvolt Error from a Restricted Open-Shell Kohn-Sham Approach. J Phys Chem Lett 2020; 11:775-786. [PMID: 31917579 DOI: 10.1021/acs.jpclett.9b03661] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We present the use of the recently developed square gradient minimization (SGM) algorithm for excited-state orbital optimization to obtain spin-pure restricted open-shell Kohn-Sham (ROKS) energies for core excited states of molecules. The SGM algorithm is robust against variational collapse and offers a reliable route to converging orbitals for target excited states at only 2-3 times the cost of ground-state orbital optimization (per iteration). ROKS/SGM with the modern SCAN/ωB97X-V functionals is found to predict the K-edge of C, N, O, and F to a root mean squared error of ∼0.3 eV. ROKS/SGM is equally effective at predicting L-edge spectra of third period elements, provided a perturbative spin-orbit correction is employed. This high accuracy can be contrasted with traditional time-dependent density functional theory (TDDFT), which typically has greater than 10 eV error and requires translation of computed spectra to align with experiment. ROKS is computationally affordable (having the same scaling as ground-state DFT and a slightly larger prefactor) and can be applied to geometry optimizations/ab initio molecular dynamics of core excited states, as well as condensed phase simulations. ROKS can also model doubly excited/ionized states with one broken electron pair, which are beyond the ability of linear response based methods.
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Affiliation(s)
- Diptarka Hait
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry , University of California , Berkeley , California 94720 , United States
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Martin Head-Gordon
- Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry , University of California , Berkeley , California 94720 , United States
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
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54
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Levi G, Ivanov AV, Jónsson H. Variational calculations of excited states via direct optimization of the orbitals in DFT. Faraday Discuss 2020; 224:448-466. [DOI: 10.1039/d0fd00064g] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A direct optimization method for obtaining excited electronic states using density functionals is presented.
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Affiliation(s)
- Gianluca Levi
- Science Institute and Faculty of Physical Sciences
- University of Iceland
- Iceland
| | - Aleksei V. Ivanov
- Science Institute and Faculty of Physical Sciences
- University of Iceland
- Iceland
- Saint Petersburg State University
- 199034 Saint Petersburg
| | - Hannes Jónsson
- Science Institute and Faculty of Physical Sciences
- University of Iceland
- Iceland
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55
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Gu Y, Xu X. A correlation–relaxation-balanced direct method at the second order perturbation theory for accurate ionization potential predictions. Phys Chem Chem Phys 2020; 22:22342-22348. [DOI: 10.1039/d0cp03430d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With almost no extra computational cost after a normal MP2 procedure, the CRB-MP2 method proposed here yields high quality valence and core IPs for a wide range of species.
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Affiliation(s)
- Yonghao Gu
- Collaborative Innovation Center of Chemistry for Energy Materials
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Ministry of Education Key Laboratory of Computational Physical Sciences
- Department of Chemistry
- Fudan University
| | - Xin Xu
- Collaborative Innovation Center of Chemistry for Energy Materials
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Ministry of Education Key Laboratory of Computational Physical Sciences
- Department of Chemistry
- Fudan University
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56
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Flamant C, Kolesov G, Manousakis E, Kaxiras E. Imaginary-Time Time-Dependent Density Functional Theory and Its Application for Robust Convergence of Electronic States. J Chem Theory Comput 2019; 15:6036-6045. [PMID: 31557010 DOI: 10.1021/acs.jctc.9b00617] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reliable and robust convergence to the electronic ground state within density functional theory (DFT) Kohn-Sham (KS) calculations remains a thorny issue in many systems of interest. In such cases, charge sloshing can delay or completely hinder the convergence. Here, we use an approach based on transforming the time-dependent DFT equations to imaginary time, followed by imaginary-time evolution, as a reliable alternative to the self-consistent field (SCF) procedure for determining the KS ground state. We discuss the theoretical and technical aspects of this approach and show that the KS ground state should be expected to be the long-imaginary-time output of the evolution, independent of the exchange-correlation functional or the level of theory used to simulate the system. By maintaining self-consistency between the single-particle wave functions (orbitals) and the electronic density throughout the determination of the stationary state, our method avoids the typical difficulties encountered in SCF. To demonstrate dependability of our approach, we apply it to selected systems which struggle to converge with SCF schemes. In addition, through the van Leeuwen theorem, we affirm the physical meaningfulness of imaginary-time TDDFT, justifying its use in certain topics of statistical mechanics such as in computing imaginary-time path integrals.
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Affiliation(s)
- Cedric Flamant
- Department of Physics , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Grigory Kolesov
- John A. Paulson School of Engineering and Applied Sciences , Harvard University , Cambridge , Massachusetts 02138 , United States
| | - Efstratios Manousakis
- Department of Physics and National High Magnetic Field Laboratory , Florida State University , Tallahassee , Florida 32306-4350 , United States.,Department of Physics , University of Athens , Panepistimioupolis, Zografos, 157 84 Athens , Greece
| | - Efthimios Kaxiras
- Department of Physics , Harvard University , Cambridge , Massachusetts 02138 , United States.,John A. Paulson School of Engineering and Applied Sciences , Harvard University , Cambridge , Massachusetts 02138 , United States
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57
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Dittmer A, Izsák R, Neese F, Maganas D. Accurate Band Gap Predictions of Semiconductors in the Framework of the Similarity Transformed Equation of Motion Coupled Cluster Theory. Inorg Chem 2019; 58:9303-9315. [PMID: 31240911 PMCID: PMC6750750 DOI: 10.1021/acs.inorgchem.9b00994] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
In
this work, we present a detailed comparison between wave-function-based
and particle/hole techniques for the prediction of band gap energies
of semiconductors. We focus on the comparison of the back-transformed
Pair Natural Orbital Similarity Transformed Equation of Motion Coupled-Cluster
(bt-PNO-STEOM-CCSD) method with Time Dependent Density Functional
Theory (TD-DFT) and Delta Self Consistent Field/DFT (Δ-SCF/DFT)
that are employed to calculate the band gap energies in a test set
of organic and inorganic semiconductors. Throughout, we have used
cluster models for the calculations that were calibrated by comparing
the results of the cluster calculations to periodic DFT calculations
with the same functional. These calibrations were run with cluster
models of increasing size until the results agreed closely with the
periodic calculation. It is demonstrated that bt-PNO-STEOM-CC yields
accurate results that are in better than 0.2 eV agreement with the
experiment. This holds for both organic and inorganic semiconductors.
The efficiency of the employed computational protocols is thoroughly
discussed. Overall, we believe that this study is an important contribution
that can aid future developments and applications of excited state
coupled cluster methods in the field of solid-state chemistry and
heterogeneous catalysis. In this work, it is shown
that a combination of the embedded cluster approach with wave-function-based
ab initio methods in the framework of the Similarity Transformed Equation
of Motion Coupled Cluster (bt-PNO STEOM-CC) provides an accurate protocol
for band gap energy predictions in classes of organic and inorganic
semiconductors.
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Affiliation(s)
- Anneke Dittmer
- Max-Planck-Institut für Kohlenforschung , Kaiser-Wilhelm-Platz 1 , 45470 Mülheim an der Ruhr , Germany
| | - Róbert Izsák
- Max-Planck-Institut für Kohlenforschung , Kaiser-Wilhelm-Platz 1 , 45470 Mülheim an der Ruhr , Germany
| | - Frank Neese
- Max-Planck-Institut für Kohlenforschung , Kaiser-Wilhelm-Platz 1 , 45470 Mülheim an der Ruhr , Germany
| | - Dimitrios Maganas
- Max-Planck-Institut für Kohlenforschung , Kaiser-Wilhelm-Platz 1 , 45470 Mülheim an der Ruhr , Germany
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58
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Su NQ, Xu X. Insights into Direct Methods for Predictions of Ionization Potential and Electron Affinity in Density Functional Theory. J Phys Chem Lett 2019; 10:2692-2699. [PMID: 31059262 DOI: 10.1021/acs.jpclett.9b01052] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Vertical ionization potential (IP) and electron affinity (EA) are fundamental molecular properties, while the Δ method and the direct method are the widely used approaches to compute these properties. The Δ method is calculated by taking the total energy difference of the initial and final states, whose reliability is seriously affected by the issue associated with the imbalanced treatment of these two states. The direct method based on the derivatives involving only one single-state calculation can yield a quasi-particle spectrum whose accuracy, on the other hand, is mostly affected by the levels of approximate molecular structure theories. Because of the aforementioned issues, EA prediction can be particularly problematic. Here we present, for the first time, an analytic theory on the derivation and realization of generalized Kohn-Sham (KS) eigenvalues of doubly hybrid (DH) functionals that depend on both occupied and unoccupied orbitals. The method based on the KS eigenvalues of neutral systems, termed the NKS method, is found to suffer little from the imbalance issue, while it is only the NKS method that can offer accurate EA prediction from a good functional approximation, such as the XYG3 type of DH functionals. Being less sensitive to the size of basis sets, the NKS method is of great significance for its application to large systems. The insights gained in this work are useful for the calculation of properties associated with small energy differences while emphasizing the importance of the development of generalized functionals that rely on both occupied and unoccupied orbitals.
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Affiliation(s)
- Neil Qiang Su
- Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Ministry of Education Key Laboratory of Computational Physical Sciences, Department of Chemistry , Fudan University , Shanghai 200433 , China
| | - Xin Xu
- Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Ministry of Education Key Laboratory of Computational Physical Sciences, Department of Chemistry , Fudan University , Shanghai 200433 , China
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59
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Mei Y, Yang W. Excited-State Potential Energy Surfaces, Conical Intersections, and Analytical Gradients from Ground-State Density Functional Theory. J Phys Chem Lett 2019; 10:2538-2545. [PMID: 31038964 PMCID: PMC7449530 DOI: 10.1021/acs.jpclett.9b00712] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Kohn-Sham density functional theory (KS-DFT) has been a well-established theoretical foundation for ground-state electronic structure and has achieved great success in practical calculations. Recently, utilizing the eigenvalues from KS or generalized KS (GKS) calculations as an approximation to the quasiparticle energies, our group demonstrated a method to calculate the excitation energies from (G)KS calculation on the ground-state ( N - 1)-electron system. This method is now called QE-DFT (quasiparticle energies from DFT). In this work, we extend this QE-DFT method to describe excited-state potential energy surfaces (PESs), conical intersections, and the analytical gradients of excited-state PESs. The analytical gradients were applied to perform geometry optimization for excited states. In conjunction with several commonly used density functional approximations, QE-DFT can yield PESs in the vicinity of the equilibrium structure with accuracy similar to that from time-dependent DFT (TD-DFT). Furthermore, it describes conical intersection well, in contrast to TD-DFT. Good results for geometry optimization, especially bond length, of low-lying excitations for 14 small molecules are presented. The capability of describing excited-state PESs, conical intersections, and analytical gradients from QE-DFT and its efficiency based on just ground-state DFT calculations should be of great interest for describing photochemical and photophysical processes in complex systems.
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Affiliation(s)
- Yuncai Mei
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Weitao Yang
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
- Key Laboratory of Theoretical Chemistry of Environment, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
- Corresponding Author:
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60
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Alagna N, Han J, Wollscheid N, Perez Lustres JL, Herz J, Hahn S, Koser S, Paulus F, Bunz UHF, Dreuw A, Buckup T, Motzkus M. Tailoring Ultrafast Singlet Fission by the Chemical Modification of Phenazinothiadiazoles. J Am Chem Soc 2019; 141:8834-8845. [DOI: 10.1021/jacs.9b01079] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicolò Alagna
- Centre for Advanced Materials
, Im Neuenheimer Feld 225, D-69120 Heidelberg, Germany
| | | | - Nikolaus Wollscheid
- Centre for Advanced Materials
, Im Neuenheimer Feld 225, D-69120 Heidelberg, Germany
| | - J. Luis Perez Lustres
- Centre for Advanced Materials
, Im Neuenheimer Feld 225, D-69120 Heidelberg, Germany
| | | | | | | | | | - Uwe H. F. Bunz
- Centre for Advanced Materials
, Im Neuenheimer Feld 225, D-69120 Heidelberg, Germany
| | - Andreas Dreuw
- Centre for Advanced Materials
, Im Neuenheimer Feld 225, D-69120 Heidelberg, Germany
| | - Tiago Buckup
- Centre for Advanced Materials
, Im Neuenheimer Feld 225, D-69120 Heidelberg, Germany
| | - Marcus Motzkus
- Centre for Advanced Materials
, Im Neuenheimer Feld 225, D-69120 Heidelberg, Germany
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61
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Strand J, Chulkov SK, Watkins MB, Shluger AL. First principles calculations of optical properties for oxygen vacancies in binary metal oxides. J Chem Phys 2019; 150:044702. [DOI: 10.1063/1.5078682] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Jack Strand
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Sergey K. Chulkov
- School of Mathematics and Physics, University of Lincoln, Brayford Pool, Lincoln LN6 7TS, United Kingdom
| | - Matthew B. Watkins
- School of Mathematics and Physics, University of Lincoln, Brayford Pool, Lincoln LN6 7TS, United Kingdom
| | - Alexander L. Shluger
- Department of Physics and Astronomy and London Centre for Nanotechnology, University College London, Gower Street, London WC1E 6BT, United Kingdom
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62
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Pinheiro M, Cardoso DVV, Aquino AJA, Machado FBC, Lischka H. The characterization of electronic defect states of single and double carbon vacancies in graphene sheets using molecular density functional theory. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1567848] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Max Pinheiro
- Departamento de Química, Instituto Tecnológico de Aeronáutica, São Paulo, Brazil
| | | | - Adélia J. A. Aquino
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, USA
- School of Pharmaceutical Sciences and Technology, Tianjin University, Tianjin, People’s Republic of China
- Institute for Theoretical Chemistry, University of Vienna Vienna, Austria
| | | | - Hans Lischka
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, USA
- School of Pharmaceutical Sciences and Technology, Tianjin University, Tianjin, People’s Republic of China
- Institute for Theoretical Chemistry, University of Vienna Vienna, Austria
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63
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Mei Y, Li C, Su NQ, Yang W. Approximating Quasiparticle and Excitation Energies from Ground State Generalized Kohn-Sham Calculations. J Phys Chem A 2019; 123:666-673. [PMID: 30589546 DOI: 10.1021/acs.jpca.8b10380] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Quasiparticle energies and fundamental band gaps in particular are critical properties of molecules and materials. It was rigorously established that the generalized Kohn-Sham HOMO and LUMO orbital energies are the chemical potentials of electron removal and addition and thus good approximations to band edges and fundamental gaps from a density functional approximation (DFA) with minimal delocalization error. For other quasiparticle energies, their connection to the generalized Kohn-Sham orbital energies has not been established but remains highly interesting. We provide the comparison of experimental quasiparticle energies for many finite systems with calculations from the GW Green function and localized orbitals scaling correction (LOSC), a recently developed correction to semilocal DFAs, which has minimal delocalization error. Extensive results with over 40 systems clearly show that LOSC orbital energies achieve slightly better accuracy than the GW calculations with little dependence on the semilocal DFA, supporting the use of LOSC DFA orbital energies to predict quasiparticle energies. This also leads to the calculations of excitation energies of the N-electron systems from the ground state DFA calculations of the ( N - 1)-electron systems. Results show good performance with accuracy similar to TDDFT and the delta SCF approach for valence excitations with commonly used DFAs with or without LOSC. For Rydberg states, good accuracy was obtained only with the use of LOSC DFA. This work highlights the pathway to quasiparticle and excitation energies from ground density functional calculations.
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Affiliation(s)
- Yuncai Mei
- Department of Chemistry , Duke University , Durham , North Carolina 27708 , United States
| | - Chen Li
- Department of Chemistry , Duke University , Durham , North Carolina 27708 , United States
| | - Neil Qiang Su
- Department of Chemistry , Duke University , Durham , North Carolina 27708 , United States
| | - Weitao Yang
- Department of Chemistry , Duke University , Durham , North Carolina 27708 , United States.,Key Laboratory of Theoretical Chemistry of Environment, School of Chemistry and Environment , South China Normal University , Guangzhou 510006 , China
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64
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Wang J, Chai C, Xu S, Zhao F, Xia H, Wang Y. Modulation of photophysical properties of copper(I) complexes containing pyridyl-imidazole (PyIm) ligands functionalized by naphthyl, phenanthryl, and anthryl groups. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.09.059] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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65
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A fragment-based approach to evaluate the performance of AMOEBA polarizable force field on charge-carrier electronic polarization. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2018.08.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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66
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Pradhan E, Sato K, Akimov AV. Non-adiabatic molecular dynamics with ΔSCF excited states. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:484002. [PMID: 30407924 DOI: 10.1088/1361-648x/aae864] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Accurate modelling of nonadiabatic transitions and electron-phonon interactions in extended systems is essential for understanding the charge and energy transfer in photovoltaic and photocatalytic materials. The extensive computational costs of the advanced excited state methods have stimulated the development of many approximations to study the nonadiabatic molecular dynamics (NA-MD) in solid-state and molecular materials. In this work, we present a novel ▵SCF-NA-MD methodology that aims to account for electron-hole interactions and electron-phonon back-reaction critical in modelling photoinduced nuclear dynamics. The excited states dynamics is described using the delta self-consistent field (▵SCF) technique within the density functional formalism and the trajectory surface hopping. The technique is implemented in the open-source Libra-X package freely available on the Internet (https://github.com/Quantum-Dynamics-Hub/Libra-X). This work illustrates the general utility of the developed ▵SCF-NA-MD methodology by characterizing the excited state energies and lifetimes, reorganization energies, photoisomerization quantum yields, and by providing the mechanistic details of reactive processes in a number of organic molecules.
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Affiliation(s)
- Ekadashi Pradhan
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260-3000, United States of America
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67
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Yang X, Wang W, Yin S. Theoretical estimation of the dissociation energy of CT states at the acenes/C60 interfaces using fragmental-based ALMO method. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2018.07.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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68
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Affiliation(s)
- Pablo Ramos
- Department of Chemistry, Rutgers University, Newark, New Jersey 07102, USA
| | - Michele Pavanello
- Department of Chemistry, Rutgers University, Newark, New Jersey 07102, USA
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69
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Rebolini E, Teale AM, Helgaker T, Savin A, Toulouse J. Excitation energies from Görling–Levy perturbation theory along the range-separated adiabatic connection. Mol Phys 2018. [DOI: 10.1080/00268976.2017.1422811] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Andrew M. Teale
- School of Chemistry, University of Nottingham, Nottingham, United Kingdom
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, University of Oslo, Oslo, Norway
- Centre for Advanced Study at the Norwegian Academy of Science and Letters, Oslo, Norway
| | - Trygve Helgaker
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, University of Oslo, Oslo, Norway
- Centre for Advanced Study at the Norwegian Academy of Science and Letters, Oslo, Norway
| | - Andreas Savin
- Laboratoire de Chimie Théorique, Université Pierre et Marie Curie, CNRS, Sorbonne Universités, Paris, France
| | - Julien Toulouse
- Laboratoire de Chimie Théorique, Université Pierre et Marie Curie, CNRS, Sorbonne Universités, Paris, France
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70
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Xie Y, Jiang S, Zheng J, Lan Z. Construction of Vibronic Diabatic Hamiltonian for Excited-State Electron and Energy Transfer Processes. J Phys Chem A 2017; 121:9567-9578. [DOI: 10.1021/acs.jpca.7b07737] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yu Xie
- CAS
Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy
and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Shengshi Jiang
- CAS
Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy
and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie Zheng
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, China
| | - Zhenggang Lan
- CAS
Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy
and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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71
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Lin MF, Kochat V, Krishnamoorthy A, Bassman Oftelie L, Weninger C, Zheng Q, Zhang X, Apte A, Tiwary CS, Shen X, Li R, Kalia R, Ajayan P, Nakano A, Vashishta P, Shimojo F, Wang X, Fritz DM, Bergmann U. Ultrafast non-radiative dynamics of atomically thin MoSe 2. Nat Commun 2017; 8:1745. [PMID: 29170416 PMCID: PMC5701075 DOI: 10.1038/s41467-017-01844-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 10/20/2017] [Indexed: 11/08/2022] Open
Abstract
Photo-induced non-radiative energy dissipation is a potential pathway to induce structural-phase transitions in two-dimensional materials. For advancing this field, a quantitative understanding of real-time atomic motion and lattice temperature is required. However, this understanding has been incomplete due to a lack of suitable experimental techniques. Here, we use ultrafast electron diffraction to directly probe the subpicosecond conversion of photoenergy to lattice vibrations in a model bilayered semiconductor, molybdenum diselenide. We find that when creating a high charge carrier density, the energy is efficiently transferred to the lattice within one picosecond. First-principles nonadiabatic quantum molecular dynamics simulations reproduce the observed ultrafast increase in lattice temperature and the corresponding conversion of photoenergy to lattice vibrations. Nonadiabatic quantum simulations further suggest that a softening of vibrational modes in the excited state is involved in efficient and rapid energy transfer between the electronic system and the lattice.
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Affiliation(s)
- Ming-Fu Lin
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Vidya Kochat
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
| | - Aravind Krishnamoorthy
- Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Computer Science, Department of Chemical Engineering & Materials Science, Department of Biological Sciences, University of Southern California, Los Angeles, CA, 90089-0242, USA
| | - Lindsay Bassman Oftelie
- Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Computer Science, Department of Chemical Engineering & Materials Science, Department of Biological Sciences, University of Southern California, Los Angeles, CA, 90089-0242, USA
| | - Clemens Weninger
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Qiang Zheng
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Xiang Zhang
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
| | - Amey Apte
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
| | - Chandra Sekhar Tiwary
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
| | - Xiaozhe Shen
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Renkai Li
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Rajiv Kalia
- Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Computer Science, Department of Chemical Engineering & Materials Science, Department of Biological Sciences, University of Southern California, Los Angeles, CA, 90089-0242, USA
| | - Pulickel Ajayan
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
| | - Aiichiro Nakano
- Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Computer Science, Department of Chemical Engineering & Materials Science, Department of Biological Sciences, University of Southern California, Los Angeles, CA, 90089-0242, USA
| | - Priya Vashishta
- Collaboratory for Advanced Computing and Simulations, Department of Physics & Astronomy, Department of Computer Science, Department of Chemical Engineering & Materials Science, Department of Biological Sciences, University of Southern California, Los Angeles, CA, 90089-0242, USA
| | - Fuyuki Shimojo
- Department of Physics, Kumamoto University, Kumamoto, 860-8555, Japan
| | - Xijie Wang
- SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - David M Fritz
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
| | - Uwe Bergmann
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
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72
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Mazière A, Chrostowska A, Darrigan C, Dargelos A, Graciaa A, Chermette H. Electronic structure of BN-aromatics: Choice of reliable computational tools. J Chem Phys 2017; 147:164306. [PMID: 29096486 DOI: 10.1063/1.4993297] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The importance of having reliable calculation tools to interpret and predict the electronic properties of BN-aromatics is directly linked to the growing interest for these very promising new systems in the field of materials science, biomedical research, or energy sustainability. Ionization energy (IE) is one of the most important parameters to approach the electronic structure of molecules. It can be theoretically estimated, but in order to evaluate their persistence and propose the most reliable tools for the evaluation of different electronic properties of existent or only imagined BN-containing compounds, we took as reference experimental values of ionization energies provided by ultra-violet photoelectron spectroscopy (UV-PES) in gas phase-the only technique giving access to the energy levels of filled molecular orbitals. Thus, a set of 21 aromatic molecules containing B-N bonds and B-N-B patterns has been merged for a comparison between experimental IEs obtained by UV-PES and various theoretical approaches for their estimation. Time-Dependent Density Functional Theory (TD-DFT) methods using B3LYP and long-range corrected CAM-B3LYP functionals are used, combined with the ΔSCF approach, and compared with electron propagator theory such as outer valence Green's function (OVGF, P3) and symmetry adapted cluster-configuration interaction ab initio methods. Direct Kohn-Sham estimation and "corrected" Kohn-Sham estimation are also given. The deviation between experimental and theoretical values is computed for each molecule, and a statistical study is performed over the average and the root mean square for the whole set and sub-sets of molecules. It is shown that (i) ΔSCF+TDDFT(CAM-B3LYP), OVGF, and P3 are the most efficient way for a good agreement with UV-PES values, (ii) a CAM-B3LYP range-separated hybrid functional is significantly better than B3LYP for the purpose, especially for extended conjugated systems, and (iii) the "corrected" Kohn-Sham result is a fast and simple way to predict IEs.
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Affiliation(s)
- Audrey Mazière
- Université de Pau et des Pays de l'Adour, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, IPREM, UMR CNRS 5254, Avenue de l'Université, 64000 Pau, France
| | - Anna Chrostowska
- Université de Pau et des Pays de l'Adour, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, IPREM, UMR CNRS 5254, Avenue de l'Université, 64000 Pau, France
| | - Clovis Darrigan
- Université de Pau et des Pays de l'Adour, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, IPREM, UMR CNRS 5254, Avenue de l'Université, 64000 Pau, France
| | - Alain Dargelos
- Université de Pau et des Pays de l'Adour, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, IPREM, UMR CNRS 5254, Avenue de l'Université, 64000 Pau, France
| | - Alain Graciaa
- Université de Pau et des Pays de l'Adour, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, IPREM, UMR CNRS 5254, Avenue de l'Université, 64000 Pau, France
| | - Henry Chermette
- Université de Lyon, Université Claude Bernard Lyon-1, ENS-Lyon, Institut des Sciences Analytiques, UMR CNRS 5280, 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France
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73
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Li X, Parrish RM, Liu F, Kokkila Schumacher SIL, Martínez TJ. An Ab Initio Exciton Model Including Charge-Transfer Excited States. J Chem Theory Comput 2017; 13:3493-3504. [PMID: 28617595 DOI: 10.1021/acs.jctc.7b00171] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Frenkel exciton model is a useful tool for theoretical studies of multichromophore systems. We recently showed that the exciton model could be used to coarse-grain electronic structure in multichromophoric systems, focusing on singly excited exciton states [ Acc. Chem. Res. 2014 , 47 , 2857 - 2866 ]. However, our previous implementation excluded charge-transfer excited states, which can play an important role in light-harvesting systems and near-infrared optoelectronic materials. Recent studies have also emphasized the significance of charge-transfer in singlet fission, which mediates the coupling between the locally excited states and the multiexcitonic states. In this work, we report on an ab initio exciton model that incorporates charge-transfer excited states and demonstrate that the model provides correct charge-transfer excitation energies and asymptotic behavior. Comparison with TDDFT and EOM-CC2 calculations shows that our exciton model is robust with respect to system size, screening parameter, and different density functionals. Inclusion of charge-transfer excited states makes the exciton model more useful for studies of singly excited states and provides a starting point for future construction of a model that also includes double-exciton states.
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Affiliation(s)
- Xin Li
- Department of Chemistry and the PULSE Institute, Stanford University , Stanford, California 94305, United States.,SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Robert M Parrish
- Department of Chemistry and the PULSE Institute, Stanford University , Stanford, California 94305, United States.,SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Fang Liu
- Department of Chemistry and the PULSE Institute, Stanford University , Stanford, California 94305, United States.,SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Sara I L Kokkila Schumacher
- Department of Chemistry and the PULSE Institute, Stanford University , Stanford, California 94305, United States.,SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Todd J Martínez
- Department of Chemistry and the PULSE Institute, Stanford University , Stanford, California 94305, United States.,SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
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74
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Varathan E, Subramanian V. The role of sulfur oxidation in controlling the electronic properties of sulfur-containing host molecules for phosphorescent organic light-emitting diodes. Phys Chem Chem Phys 2017; 19:12002-12012. [PMID: 28443899 DOI: 10.1039/c7cp00828g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In this study a series of dibenzothiophene (DBT) derivatives having different valence states of sulfur atoms have been reported as host materials for blue phosphorescent organic light-emitting diodes. Their electronic properties have also been thoroughly investigated to develop structure-property relationships which include the consideration of the effect of various oxidation states of the sulfur atom in the core moiety and linking (C-N linkage) of subunits with the core at different positions. The results obtained from the electronic structure calculations highlight that the triplet energy (ET), singlet-triplet energy difference (ΔEST), reorganization energy for the hole and the injection barrier for the electron decrease with an increase in the oxidation state of the sulfur atom in DBT. On the other hand, the injection barrier for the hole and the reorganization energy for the electron increase upon increasing the oxidation state of the sulfur atom present in the DBT.
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Affiliation(s)
- E Varathan
- Chemical Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai-600 020, India.
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75
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Surakhot Y, Laszlo V, Chitpakdee C, Promarak V, Sudyoadsuk T, Kungwan N, Kowalczyk T, Irle S, Jungsuttiwong S. Theoretical rationalization for reduced charge recombination in bulky carbazole-based sensitizers in solar cells. J Comput Chem 2017; 38:901-909. [PMID: 28192642 DOI: 10.1002/jcc.24751] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/12/2016] [Accepted: 12/31/2016] [Indexed: 11/09/2022]
Abstract
The search for greater efficiency in organic dye-sensitized solar cells (DSCs) and in their perovskite cousins is greatly aided by a more complete understanding of the spectral and morphological properties of the photoactive layer. This investigation resolves a discrepancy in the observed photoconversion efficiency (PCE) of two closely related DSCs based on carbazole-containing D-π-A organic sensitizers. Detailed theoretical characterization of the absorption spectra, dye adsorption on TiO2 , and electronic couplings for charge separation and recombination permit a systematic determination of the origin of the difference in PCE. Although the two dyes produce similar spectral features, ground- and excited-state density functional theory (DFT) simulations reveal that the dye with the bulkier donor group adsorbs more strongly to TiO2 , experiences limited π-π aggregation, and is more resistant to loss of excitation energy via charge recombination on the dye. The effects of conformational flexibility on absorption spectra and on the electronic coupling between the bright exciton and charge-transfer states are revealed to be substantial and are characterized through density-functional tight-binding (DFTB) molecular dynamics sampling. These simulations offer a mechanistic explanation for the superior open-circuit voltage and short-circuit current of the bulky-donor dye sensitizer and provide theoretical justification of an important design feature for the pursuit of greater photocurrent efficiency in DSCs. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Yaowarat Surakhot
- Center for Organic Electronic and Alternative Energy, Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190, Thailand
| | - Viktor Laszlo
- Department of Chemistry, Advanced Materials Science and Engineering Center, and Institute for Energy Studies, Western Washington University, Bellingham, Washington, 98225
| | - Chirawat Chitpakdee
- National Nanotechnology Center, National Science and Technology Development Agency, Klong Luang, Pathumthani, 12120, Thailand
| | - Vinich Promarak
- School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong, 21210, Thailand
| | - Taweesak Sudyoadsuk
- School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong, 21210, Thailand
| | - Nawee Kungwan
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Tim Kowalczyk
- Department of Chemistry, Advanced Materials Science and Engineering Center, and Institute for Energy Studies, Western Washington University, Bellingham, Washington, 98225
| | - Stephan Irle
- Department of Chemistry, Graduate School of Science, Nagoya University, Institute of Transformational Biomolecules (WPI-ITbM) and, Nagoya, 464-8602, Japan
| | - Siriporn Jungsuttiwong
- Center for Organic Electronic and Alternative Energy, Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190, Thailand
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76
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Liu J, Zhang Y, Bao P, Yi Y. Evaluating Electronic Couplings for Excited State Charge Transfer Based on Maximum Occupation Method ΔSCF Quasi-Adiabatic States. J Chem Theory Comput 2017; 13:843-851. [DOI: 10.1021/acs.jctc.6b01161] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Junzi Liu
- Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yong Zhang
- Synfuels China, Beijing 101407, P. R. China
| | - Peng Bao
- Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yuanping Yi
- Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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77
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Becke AD. Vertical excitation energies from the adiabatic connection. J Chem Phys 2016; 145:194107. [DOI: 10.1063/1.4967813] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Axel D. Becke
- Department of Chemistry, Dalhousie University, 6274 Coburg Rd., P.O. Box 15000, Halifax, Nova Scotia B3H 4R2, Canada
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78
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Komoto KT, Kowalczyk T. How Parallel Are Excited State Potential Energy Surfaces from Time-Independent and Time-Dependent DFT? A BODIPY Dye Case Study. J Phys Chem A 2016; 120:8160-8168. [DOI: 10.1021/acs.jpca.6b08181] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keenan T. Komoto
- Department
of Chemistry,
Advanced Materials Science and Engineering Center, and Institute for
Energy Studies, Western Washington University, Bellingham, Washington 98225, United States
| | - Tim Kowalczyk
- Department
of Chemistry,
Advanced Materials Science and Engineering Center, and Institute for
Energy Studies, Western Washington University, Bellingham, Washington 98225, United States
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79
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Park YC, Senn F, Krykunov M, Ziegler T. Self-Consistent Constricted Variational Theory RSCF-CV(∞)-DFT and Its Restrictions To Obtain a Numerically Stable ΔSCF-DFT-like Method: Theory and Calculations for Triplet States. J Chem Theory Comput 2016; 12:5438-5452. [DOI: 10.1021/acs.jctc.6b00333] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Young Choon Park
- Department
of Chemistry, University of Calgary, 2500 University Drive Northwest, Calgary, Alberta T2N-1N4, Canada
| | - Florian Senn
- Department
of Chemistry, University of Calgary, 2500 University Drive Northwest, Calgary, Alberta T2N-1N4, Canada
| | - Mykhaylo Krykunov
- Department
of Chemistry and Biomolecular Sciences, University of Ottawa, 75 Laurier Avenue East, Ottawa, Ontario K1N-6N5, Canada
| | - Tom Ziegler
- Department
of Chemistry, University of Calgary, 2500 University Drive Northwest, Calgary, Alberta T2N-1N4, Canada
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80
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Yost SR, Head-Gordon M. Size consistent formulations of the perturb-then-diagonalize Møller-Plesset perturbation theory correction to non-orthogonal configuration interaction. J Chem Phys 2016; 145:054105. [DOI: 10.1063/1.4959794] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Shane R. Yost
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Martin Head-Gordon
- Department of Chemistry, University of California, Berkeley, California 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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81
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Zhang D, Shen W, Zhang X, Sun H, He R, Li M. Rational design of carbazolyl and aryl phosphine oxide (APO) based ambipolar host materials for blue electrophosphorescence: a density functional theory study. RSC Adv 2016. [DOI: 10.1039/c6ra02808j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Carbazolyl and Aryl Phosphine Oxide (APO) based ambipolar host materials.
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Affiliation(s)
- Dongmei Zhang
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- P. R. China
| | - Wei Shen
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- P. R. China
| | - Xiaguang Zhang
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- P. R. China
| | - Huili Sun
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- P. R. China
| | - Rongxing He
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- P. R. China
| | - Ming Li
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- P. R. China
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82
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Ramegowda M, Ranjitha KN, Deepika TN. Exploring excited state properties of 7-hydroxy and 7-methoxy 4-methycoumarin: a combined time-dependent density functional theory/effective fragment potential study. NEW J CHEM 2016. [DOI: 10.1039/c5nj02917a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen bond dynamics, C–OH bond contracting, O–H bond stretching and O–H⋯O HB strengthening reveal the ESHT in 4MU at the S1state.
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83
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Dontot L, Suaud N, Rapacioli M, Spiegelman F. An extended DFTB-CI model for charge-transfer excited states in cationic molecular clusters: model studies versus ab initio calculations in small PAH clusters. Phys Chem Chem Phys 2016; 18:3545-57. [PMID: 26750534 DOI: 10.1039/c5cp06344b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present an extension of the constrained density functional tight binding scheme combined with configuration interaction (DFTB-CI) to efficiently compute excited states of molecular cluster cations.
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Affiliation(s)
- Léo Dontot
- Laboratoire de Chimie et de Physique Quantiques (LCPQ)
- IRSAMC
- Université de Toulouse (UPS) and CNRS
- F-31062 Toulouse
- France
| | - Nicolas Suaud
- Laboratoire de Chimie et de Physique Quantiques (LCPQ)
- IRSAMC
- Université de Toulouse (UPS) and CNRS
- F-31062 Toulouse
- France
| | - Mathias Rapacioli
- Laboratoire de Chimie et de Physique Quantiques (LCPQ)
- IRSAMC
- Université de Toulouse (UPS) and CNRS
- F-31062 Toulouse
- France
| | - Fernand Spiegelman
- Laboratoire de Chimie et de Physique Quantiques (LCPQ)
- IRSAMC
- Université de Toulouse (UPS) and CNRS
- F-31062 Toulouse
- France
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84
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Varathan E, Vijay D, Subramanian V. Quantum chemical design of carbazole- and pyridoindole-based ambipolar host materials for blue phosphorescent OLEDs. RSC Adv 2016. [DOI: 10.1039/c6ra15748c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Structure–property relationship of carbazole- and pyridoindole-type host materials for blue PhOLEDs using quantum chemical calculations.
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Affiliation(s)
- E. Varathan
- Chemical Laboratory
- CSIR-Central Leather Research Institute
- Chennai-600 020
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Dolly Vijay
- Department of Chemistry
- University of Delhi
- Delhi 110007
- India
| | - V. Subramanian
- Chemical Laboratory
- CSIR-Central Leather Research Institute
- Chennai-600 020
- India
- Academy of Scientific and Innovative Research (AcSIR)
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85
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Kolesov G, Grånäs O, Hoyt R, Vinichenko D, Kaxiras E. Real-Time TD-DFT with Classical Ion Dynamics: Methodology and Applications. J Chem Theory Comput 2015; 12:466-76. [DOI: 10.1021/acs.jctc.5b00969] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Grigory Kolesov
- John
A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Oscar Grånäs
- John
A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
- Department
of Physics and Astronomy, Division of Materials Theory, Uppsala University, Box
516, SE-75120 Uppsala, Sweden
| | - Robert Hoyt
- Department
of Physics, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Dmitry Vinichenko
- Department
of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Efthimios Kaxiras
- John
A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
- Department
of Physics, Harvard University, Cambridge, Massachusetts 02138, United States
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86
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Ziegler T, Krykunov M, Autschbach J. Derivation of the RPA (Random Phase Approximation) Equation of ATDDFT (Adiabatic Time Dependent Density Functional Ground State Response Theory) from an Excited State Variational Approach Based on the Ground State Functional. J Chem Theory Comput 2015; 10:3980-6. [PMID: 26588541 DOI: 10.1021/ct500385a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The random phase approximation (RPA) equation of adiabatic time dependent density functional ground state response theory (ATDDFT) has been used extensively in studies of excited states. It extracts information about excited states from frequency dependent ground state response properties and avoids, thus, in an elegant way, direct Kohn-Sham calculations on excited states in accordance with the status of DFT as a ground state theory. Thus, excitation energies can be found as resonance poles of frequency dependent ground state polarizability from the eigenvalues of the RPA equation. ATDDFT is approximate in that it makes use of a frequency independent energy kernel derived from the ground state functional. It is shown in this study that one can derive the RPA equation of ATDDFT from a purely variational approach in which stationary states above the ground state are located using our constricted variational DFT (CV-DFT) method and the ground state functional. Thus, locating stationary states above the ground state due to one-electron excitations with a ground state functional is completely equivalent to solving the RPA equation of TDDFT employing the same functional. The present study is an extension of a previous work in which we demonstrated the equivalence between ATDDFT and CV-DFT within the Tamm-Dancoff approximation.
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Affiliation(s)
- Tom Ziegler
- Department of Chemistry, University of Calgary , University Drive 2500, Calgary Alberta T2N1N4, Canada
| | - Mykhaylo Krykunov
- Department of Chemistry, University of Calgary , University Drive 2500, Calgary Alberta T2N1N4, Canada
| | - Jochen Autschbach
- Department of Chemistry, State University of New York . 312 Natural Sciences Complex. Buffalo, New York 14260-3000, United States
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87
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Li C, Lu J, Yang W. Gentlest ascent dynamics for calculating first excited state and exploring energy landscape of Kohn-Sham density functionals. J Chem Phys 2015; 143:224110. [PMID: 26671361 DOI: 10.1063/1.4936411] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We develop the gentlest ascent dynamics for Kohn-Sham density functional theory to search for the index-1 saddle points on the energy landscape of the Kohn-Sham density functionals. These stationary solutions correspond to excited states in the ground state functionals. As shown by various examples, the first excited states of many chemical systems are given by these index-1 saddle points. Our novel approach provides an alternative, more robust way to obtain these excited states, compared with the widely used ΔSCF approach. The method can be easily generalized to target higher index saddle points. Our results also reveal the physical interest and relevance of studying the Kohn-Sham energy landscape.
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Affiliation(s)
- Chen Li
- Department of Chemistry, Duke University, Durham, North Carolina 27708, USA
| | - Jianfeng Lu
- Department of Chemistry, Duke University, Durham, North Carolina 27708, USA
| | - Weitao Yang
- Department of Chemistry, Duke University, Durham, North Carolina 27708, USA
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88
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Brückner C, Engels B. Benchmarking Ground-State Geometries and Vertical Excitation Energies of a Selection of P-Type Semiconducting Molecules with Different Polarity. J Phys Chem A 2015; 119:12876-91. [DOI: 10.1021/acs.jpca.5b10315] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Charlotte Brückner
- Institut
für Theoretische Chemie, Universität Würzburg, Emil-Fischer-Straße
42, 97074 Würzburg, Germany
| | - Bernd Engels
- Institut
für Theoretische Chemie, Universität Würzburg, Emil-Fischer-Straße
42, 97074 Würzburg, Germany
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89
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Kowalczyk T, Le K, Irle S. Self-Consistent Optimization of Excited States within Density-Functional Tight-Binding. J Chem Theory Comput 2015; 12:313-23. [DOI: 10.1021/acs.jctc.5b00734] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Tim Kowalczyk
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Department of Chemistry,
Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
- Department
of Chemistry, Advanced Materials Science and Engineering Center, and
Institute for Energy Studies, Western Washington University, Bellingham, Washington 98225, United States
| | - Khoa Le
- Department
of Chemistry, Advanced Materials Science and Engineering Center, and
Institute for Energy Studies, Western Washington University, Bellingham, Washington 98225, United States
| | - Stephan Irle
- Institute
of Transformative Bio-Molecules (WPI-ITbM) and Department of Chemistry,
Graduate School of Science, Nagoya University, Nagoya 464-8602, Japan
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90
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Verma P, Derricotte WD, Evangelista FA. Predicting Near Edge X-ray Absorption Spectra with the Spin-Free Exact-Two-Component Hamiltonian and Orthogonality Constrained Density Functional Theory. J Chem Theory Comput 2015; 12:144-56. [DOI: 10.1021/acs.jctc.5b00817] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Prakash Verma
- Department of Chemistry and
Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, United States
| | - Wallace D. Derricotte
- Department of Chemistry and
Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, United States
| | - Francesco A. Evangelista
- Department of Chemistry and
Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, United States
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91
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Falklöf O, Durbeej B, Norman P. Inter-Excited-State Phosphorescence in the Four-Component Relativistic Kohn–Sham Approximation: A Case Study on Lumiflavin. J Phys Chem A 2015; 119:11911-21. [DOI: 10.1021/acs.jpca.5b08908] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Olle Falklöf
- Division of Theoretical
Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden
| | - Bo Durbeej
- Division of Theoretical
Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden
| | - Patrick Norman
- Division of Theoretical
Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden
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92
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Seidu I, Krykunov M, Ziegler T. Applications of Time-Dependent and Time-Independent Density Functional Theory to Electronic Transitions in Tetrahedral d0 Metal Oxides. J Chem Theory Comput 2015; 11:4041-53. [DOI: 10.1021/acs.jctc.5b00298] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Issaka Seidu
- Department of Chemistry, University of Calgary, University
Drive 2500, Calgary, AB T2N-1N4, Canada
| | - Mykhaylo Krykunov
- Department of Chemistry, University of Calgary, University
Drive 2500, Calgary, AB T2N-1N4, Canada
| | - Tom Ziegler
- Department of Chemistry, University of Calgary, University
Drive 2500, Calgary, AB T2N-1N4, Canada
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93
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Rohrmüller M, Hoffmann A, Thierfelder C, Herres-Pawlis S, Schmidt WG. The Cu2O2torture track for a real-life system: [Cu2(btmgp)2O2]2+oxo and peroxo species in density functional calculations†. J Comput Chem 2015; 36:1672-85. [DOI: 10.1002/jcc.23983] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 05/26/2015] [Accepted: 05/28/2015] [Indexed: 01/23/2023]
Affiliation(s)
- Martin Rohrmüller
- Universität Paderborn, Department Physik, Lehrstuhl für Theoretische Physik; Pohlweg 55 33095 Paderborn Germany
| | - Alexander Hoffmann
- RWTH Aachen University, Fachgruppe Chemie, Lehrstuhl für Bioanorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Christian Thierfelder
- Universität Paderborn, Department Physik, Lehrstuhl für Theoretische Physik; Pohlweg 55 33095 Paderborn Germany
| | - Sonja Herres-Pawlis
- RWTH Aachen University, Fachgruppe Chemie, Lehrstuhl für Bioanorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Wolf Gero Schmidt
- Universität Paderborn, Department Physik, Lehrstuhl für Theoretische Physik; Pohlweg 55 33095 Paderborn Germany
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94
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Masunov AE, Anderson D, Freidzon AY, Bagaturyants AA. Symmetry-Breaking in Cationic Polymethine Dyes: Part 2. Shape of Electronic Absorption Bands Explained by the Thermal Fluctuations of the Solvent Reaction Field. J Phys Chem A 2015; 119:6807-15. [DOI: 10.1021/acs.jpca.5b03877] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | - Alexandra Ya. Freidzon
- Photochemistry
Center RAS, ul. Novatorov 7a, Moscow, 119421, Russia
- National Research Nuclear University MEPhI, Kashirskoye shosse 31, Moscow, 115409, Russia
| | - Alexander A. Bagaturyants
- Photochemistry
Center RAS, ul. Novatorov 7a, Moscow, 119421, Russia
- National Research Nuclear University MEPhI, Kashirskoye shosse 31, Moscow, 115409, Russia
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95
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Derricotte WD, Evangelista FA. Simulation of X-ray absorption spectra with orthogonality constrained density functional theory. Phys Chem Chem Phys 2015; 17:14360-74. [PMID: 25690350 PMCID: PMC4449318 DOI: 10.1039/c4cp05509h] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Orthogonality constrained density functional theory (OCDFT) [F. A. Evangelista, P. Shushkov and J. C. Tully, J. Phys. Chem. A, 2013, 117, 7378] is a variational time-independent approach for the computation of electronic excited states. In this work we extend OCDFT to compute core-excited states and generalize the original formalism to determine multiple excited states. Benchmark computations on a set of 13 small molecules and 40 excited states show that unshifted OCDFT/B3LYP excitation energies have a mean absolute error of 1.0 eV. Contrary to time-dependent DFT, OCDFT excitation energies for first- and second-row elements are computed with near-uniform accuracy. OCDFT core excitation energies are insensitive to the choice of the functional and the amount of Hartree-Fock exchange. We show that OCDFT is a powerful tool for the assignment of X-ray absorption spectra of large molecules by simulating the gas-phase near-edge spectrum of adenine and thymine.
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Affiliation(s)
- Wallace D Derricotte
- Department of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322, USA.
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96
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Kilina S, Kilin D, Tretiak S. Light-Driven and Phonon-Assisted Dynamics in Organic and Semiconductor Nanostructures. Chem Rev 2015; 115:5929-78. [DOI: 10.1021/acs.chemrev.5b00012] [Citation(s) in RCA: 140] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Svetlana Kilina
- Chemistry
and Biochemistry Department, North Dakota State University, Fargo, North Dakota 5810, United States
| | - Dmitri Kilin
- Department
of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Sergei Tretiak
- Theoretical
Division, Center for Nonlinear Studies (CNLS) and Center for Integrated
Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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97
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Hanson-Heine MWD, Wriglesworth A, Uroos M, Calladine JA, Murphy TS, Hamilton M, Clark IP, Towrie M, Dowden J, Besley NA, George MW. Calculating singlet excited states: Comparison with fast time-resolved infrared spectroscopy of coumarins. J Chem Phys 2015; 142:154119. [DOI: 10.1063/1.4917311] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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98
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Rebolini E, Toulouse J, Teale AM, Helgaker T, Savin A. Excited states from range-separated density-functional perturbation theory. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1011248] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Elisa Rebolini
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7616, Laboratoire de Chimie Théorique, Paris, France
- CNRS, UMR 7616, Laboratoire de Chimie Théorique, Paris, France
- Department of Chemistry, Centre for Theoretical and Computational Chemistry, University of Oslo, Oslo, Norway
| | - Julien Toulouse
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7616, Laboratoire de Chimie Théorique, Paris, France
- CNRS, UMR 7616, Laboratoire de Chimie Théorique, Paris, France
| | - Andrew M. Teale
- School of Chemistry, University of Nottingham, Nottingham, United Kingdom
| | - Trygve Helgaker
- Department of Chemistry, Centre for Theoretical and Computational Chemistry, University of Oslo, Oslo, Norway
| | - Andreas Savin
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7616, Laboratoire de Chimie Théorique, Paris, France
- CNRS, UMR 7616, Laboratoire de Chimie Théorique, Paris, France
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99
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Park YC, Krykunov M, Ziegler T. On the relation between adiabatic time dependent density functional theory (TDDFT) and the ΔSCF-DFT method. Introducing a numerically stable ΔSCF-DFT scheme for local functionals based on constricted variational DFT. Mol Phys 2015. [DOI: 10.1080/00268976.2014.1003260] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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100
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Filatov M. Ensemble DFT Approach to Excited States of Strongly Correlated Molecular Systems. Top Curr Chem (Cham) 2015; 368:97-124. [PMID: 25906417 DOI: 10.1007/128_2015_630] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Ensemble density functional theory (DFT) is a novel time-independent formalism for obtaining excitation energies of many-body fermionic systems. A considerable advantage of ensemble DFT over the more common Kohn-Sham (KS) DFT and time-dependent DFT formalisms is that it enables one to account for strong non-dynamic electron correlation in the ground and excited states of molecular systems in a transparent and accurate fashion. Despite its positive aspects, ensemble DFT has not so far found its way into the repertoire of methods of modern computational chemistry, probably because of the perceived lack of practically affordable implementations of the theory. The spin-restricted ensemble-referenced KS (REKS) method is perhaps the first computationally feasible implementation of the ideas behind ensemble DFT which enables one to describe accurately electronic transitions in a wide class of molecular systems, including strongly correlated molecules (biradicals, molecules undergoing bond breaking/formation), extended π-conjugated systems, donor-acceptor charge transfer adducts, etc.
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Affiliation(s)
- Michael Filatov
- Institut für Physikalische und Theoretische Chemie, Universität Bonn, Beringstr. 4, 53115, Bonn, Germany,
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