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Loos PF, Jacquemin D. A mountaineering strategy to excited states: Accurate vertical transition energies and benchmarks for substituted benzenes. J Comput Chem 2024; 45:1791-1805. [PMID: 38661240 DOI: 10.1002/jcc.27358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/09/2024] [Accepted: 02/15/2024] [Indexed: 04/26/2024]
Abstract
In an effort to expand the existing QUEST database of accurate vertical transition energies [Véril et al. WIREs Comput. Mol. Sci. 2021, 11, e1517], we have modeled more than 100 electronic excited states of different natures (local, charge-transfer, Rydberg, singlet, and triplet) in a dozen of mono- and di-substituted benzenes, including aniline, benzonitrile, chlorobenzene, fluorobenzene, nitrobenzene, among others. To establish theoretical best estimates for these vertical excitation energies, we have employed advanced coupled-cluster methods including iterative triples (CC3 and CCSDT) and, when technically possible, iterative quadruples (CC4). These high-level computational approaches provide a robust foundation for benchmarking a series of popular wave function methods. The evaluated methods all include contributions from double excitations (ADC(2), CC2, CCSD, CIS(D), EOM-MP2, STEOM-CCSD), along with schemes that also incorporate perturbative or iterative triples (ADC(3), CCSDR(3), CCSD(T)(a) ⋆ , and CCSDT-3). This systematic exploration not only broadens the scope of the QUEST database but also facilitates a rigorous assessment of different theoretical approaches in the framework of a homologous chemical series, offering valuable insights into the accuracy and reliability of these methods in such cases. We found that both ADC(2.5) and CCSDT-3 can provide very consistent estimates, whereas among less expensive methods SCS-CC2 is likely the most effective approach. Importantly, we show that some lower order methods may offer reasonable trends in the homologous series while providing quite large average errors, and vice versa. Consequently, benchmarking the accuracy of a model based solely on absolute transition energies may not be meaningful for applications involving a series of similar compounds.
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Affiliation(s)
- Pierre-François Loos
- Laboratoire de Chimie et Physique Quantiques (UMR 5626), Université de Toulouse, CNRS, UPS, France
| | - Denis Jacquemin
- Nantes Université, CNRS, CEISAM UMR 6230, Nantes, France
- Institut Universitaire de France (IUF), Paris, France
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2
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Vaganova TA, Benassi E, Gatilov YV, Chuikov IP, Pishchur DP, Malykhin EV. Polyhalogenated aminobenzonitriles vs. their co-crystals with 18-crown-6: amino group position as a tool to control crystal packing and solid-state fluorescence. CrystEngComm 2022. [DOI: 10.1039/d1ce01469b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Strengthening (para-isomers) or weakening (ortho-isomers) of π-electron aggregation due to the crystal structure rearrangement results in the bathochromic or hypsochromic shift of the fluorescence maximum.
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Affiliation(s)
- Tamara A. Vaganova
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9 Lavrentiev Avenue, 630090 Novosibirsk, Russian Federation
| | - Enrico Benassi
- Novosibirsk State University, 2 Pirogova Avenue, 630090 Novosibirsk, Russian Federation
| | - Yurij V. Gatilov
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9 Lavrentiev Avenue, 630090 Novosibirsk, Russian Federation
| | - Igor P. Chuikov
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9 Lavrentiev Avenue, 630090 Novosibirsk, Russian Federation
| | - Denis P. Pishchur
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3 Lavrentiev Avenue, 630090 Novosibirsk, Russian Federation
| | - Evgenij V. Malykhin
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9 Lavrentiev Avenue, 630090 Novosibirsk, Russian Federation
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3
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Otis L, Craig I, Neuscamman E. A hybrid approach to excited-state-specific variational Monte Carlo and doubly excited states. J Chem Phys 2020; 153:234105. [PMID: 33353344 DOI: 10.1063/5.0024572] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
We extend our hybrid linear-method/accelerated-descent variational Monte Carlo optimization approach to excited states and investigate its efficacy in double excitations. In addition to showing a superior statistical efficiency when compared to the linear method, our tests on small molecules show good energetic agreement with benchmark methods. We also demonstrate the ability to treat double excitations in systems that are too large for a full treatment by using selected configuration interaction methods via an application to 4-aminobenzonitrile. Finally, we investigate the stability of state-specific variance optimization against collapse to other states' variance minima and find that symmetry, Ansatz quality, and sample size all have roles to play in achieving stability.
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Affiliation(s)
- Leon Otis
- Department of Physics, University of California, Berkeley, Berkeley, California 94720, USA
| | - Isabel Craig
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, USA
| | - Eric Neuscamman
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, USA
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Maschietto F, Sanz García J, Campetella M, Ciofini I. Using density based indexes to characterize excited states evolution. J Comput Chem 2019; 40:650-656. [PMID: 30549077 DOI: 10.1002/jcc.25750] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 09/10/2018] [Accepted: 09/13/2018] [Indexed: 12/24/2022]
Abstract
With the aim of offering new computational tools helping in the description of photochemical reactions and phenomena occurring at the excited state, we present in this work the capability of a density based index (Π) in locating decay channels from higher to lower excited states. The Π index, previously applied to disclose non-radiative decay channels from the first excited state to the ground state, is very simple in its formulation and can be evaluated, practically with no extra computational cost, and coupled to any quantum method able to provide excited states densities. Indeed, this index relies only on the knowledge of energetics and electron densities of the different electronic states involved in the decay. In the present work, we show the proficiency of the Π index in the general case of decay between excited states by applying it to two model systems well characterized both theoretically and experimentally. In both cases, this descriptor was successful in spotting the regions where excited states are more likely to decay, thus suggesting its potential interest for further application in the design of new compounds. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Federica Maschietto
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris, F-75005, Paris, France
| | - Juan Sanz García
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris, F-75005, Paris, France
| | - Marco Campetella
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris, F-75005, Paris, France
| | - Ilaria Ciofini
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris, F-75005, Paris, France
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5
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Wu Z, Zhang G, Sharman E, Cui P, Jiang J. Structure-dependent luminescence of tetra-(4-pyridylphenyl)ethylene: a first-principles study. Phys Chem Chem Phys 2018; 20:41-45. [DOI: 10.1039/c7cp06643k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The relationship between the molecular structure and fluorescence properties of TPPE was investigated by TDDFT calculations.
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Affiliation(s)
- Ziye Wu
- School of Chemistry and Materials Science
- Hefei National Laboratory for Physical Sciences at the Microscale
- University of Science and Technology of China (USTC)
- Hefei
- China
| | - Guozhen Zhang
- School of Chemistry and Materials Science
- Hefei National Laboratory for Physical Sciences at the Microscale
- University of Science and Technology of China (USTC)
- Hefei
- China
| | - Edward Sharman
- Department of Neurology
- University of California
- Irvine
- USA
| | - Peng Cui
- School of Chemistry and Materials Science
- Hefei National Laboratory for Physical Sciences at the Microscale
- University of Science and Technology of China (USTC)
- Hefei
- China
| | - Jun Jiang
- School of Chemistry and Materials Science
- Hefei National Laboratory for Physical Sciences at the Microscale
- University of Science and Technology of China (USTC)
- Hefei
- China
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Chen F, Zhang W, Tian T, Bai B, Wang H, Li M. Substituent Effect on Intramolecular Charge Transfer of Symmetric Methoxy-Substituted Bi-1,3,4-oxadiazole Derivatives. J Phys Chem A 2017; 121:8399-8407. [DOI: 10.1021/acs.jpca.7b08845] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fangyi Chen
- Key Laboratory of Automobile Materials (MOE) & College of Materials Science and Engineering, Jilin University, Changchun 130012, China
| | - Wanxi Zhang
- Key Laboratory of Automobile Materials (MOE) & College of Materials Science and Engineering, Jilin University, Changchun 130012, China
| | - Taiji Tian
- Key Laboratory of Automobile Materials (MOE) & College of Materials Science and Engineering, Jilin University, Changchun 130012, China
| | - Binglian Bai
- College
of Physics, Jilin University, Changchun 130012, China
| | - Haitao Wang
- Key Laboratory of Automobile Materials (MOE) & College of Materials Science and Engineering, Jilin University, Changchun 130012, China
- Institute
of Theoretical Chemistry, Jilin University, Changchun 130023, China
| | - Min Li
- Key Laboratory of Automobile Materials (MOE) & College of Materials Science and Engineering, Jilin University, Changchun 130012, China
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Stagi L, Chiriu D, Scholz M, Carbonaro CM, Corpino R, Porcheddu A, Rajamaki S, Cappellini G, Cardia R, Ricci PC. Vibrational and optical characterization of s-triazine derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 183:348-355. [PMID: 28458240 DOI: 10.1016/j.saa.2017.04.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 03/24/2017] [Accepted: 04/18/2017] [Indexed: 05/26/2023]
Abstract
The optical and electron properties of three different s-triazine derivatives are investigated to ascertain the role of the donor acceptor character in amine-triazine systems depending on the bridging radical of the ammine group. The three derivatives were obtained starting from three different ammine compounds allowing to achieve a structure with a triazine core, surrounded by three ammine group and terminated with cyano or methyl or oxy-methyl functional group. Experimental optical data were interpreted in view of the electronic insights gathered by means of density functional theory simulations on base compounds. As compared to the reference electron donating triazine core, the resulting compounds show different donor acceptor character, from electron accepting to electron donating feature. Among the analyzed derivatives, the cyano terminated ammino-triazine compound shows the most promising optical features for photonics and lighting applications.
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Affiliation(s)
- Luigi Stagi
- Dipartimento di Fisica, Università di Cagliari, sp. N°8 Km 0.700, 09042 Monserrato, Cagliari, Italy
| | - Daniele Chiriu
- Dipartimento di Fisica, Università di Cagliari, sp. N°8 Km 0.700, 09042 Monserrato, Cagliari, Italy
| | - Marek Scholz
- Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Czech Republic
| | - Carlo Maria Carbonaro
- Dipartimento di Fisica, Università di Cagliari, sp. N°8 Km 0.700, 09042 Monserrato, Cagliari, Italy
| | - Riccardo Corpino
- Dipartimento di Fisica, Università di Cagliari, sp. N°8 Km 0.700, 09042 Monserrato, Cagliari, Italy
| | - Andrea Porcheddu
- Dipartimento di Scienze Chimiche e GeologicheUniversità degli Studi di Cagliari.Cittadella UniversitariaSS554 bivio per Sestu, 09042 Monserrato (Ca), Italy
| | - Suvi Rajamaki
- Dipartimento di Scienze Chimiche e GeologicheUniversità degli Studi di Cagliari.Cittadella UniversitariaSS554 bivio per Sestu, 09042 Monserrato (Ca), Italy
| | - Giancarlo Cappellini
- Dipartimento di Fisica, Università di Cagliari, sp. N°8 Km 0.700, 09042 Monserrato, Cagliari, Italy
| | - Roberto Cardia
- Dipartimento di Fisica, Università di Cagliari, sp. N°8 Km 0.700, 09042 Monserrato, Cagliari, Italy
| | - Pier Carlo Ricci
- Dipartimento di Fisica, Università di Cagliari, sp. N°8 Km 0.700, 09042 Monserrato, Cagliari, Italy.
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Escudero D. Revising Intramolecular Photoinduced Electron Transfer (PET) from First-Principles. Acc Chem Res 2016; 49:1816-24. [PMID: 27575871 DOI: 10.1021/acs.accounts.6b00299] [Citation(s) in RCA: 166] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Photoinduced electron transfer (PET) plays relevant roles in many areas of chemistry, including charge separation processes in photovoltaics, natural and artificial photosynthesis, and photoluminescence sensors and switches. As in many other photochemical scenarios, the structural and energetic factors play relevant roles in determining the rates and efficiencies of PET and its competitive photodeactivation processes. Particularly, in the field of fluorescent sensors and switches, intramolecular PET is believed (in many cases without compelling experimental proof) to be responsible of the quench of fluorescence. There is an increasing experimental interest in fluorophore's molecular design and on achieving optimal excitation/emission spectra, excitation coefficients, and fluorescence quantum yields (importantly for bioimaging purposes), but less efforts are devoted to fundamental mechanistic studies. In this Account, I revise the origins of the fluorescence quenching in some of these systems with state-of-the-art quantum chemical tools. These studies go beyond the common strategy of analyzing frontier orbital energy diagrams and performing PET thermodynamics calculations. Instead, the potential energy surfaces (PESs) of the lowest-lying excited states are explored with time-dependent density functional theory (TD-DFT) and complete active space self-consistent field (CASSCF) calculations and the radiative and nonradiative decay rates from the involved excited states are computed from first-principles using a thermal vibration correlation function formalism. With such a strategy, this work reveals the real origins of the fluorescence quenching, herein entitled as dark-state quenching. Dark states (those that do not absorb or emit light) are often elusive to experiments and thus, computational investigations can provide novel insights into the actual photodeactivation mechanisms. The success of the dark-state quenching mechanism is demonstrated for a wide variety of fluorescent probes, including proton, cation and anion targets. Furthermore, this mechanism provides a general picture of the fluorescence quenching which englobes intramolecular charge-transfer (ICT), ratiometric quenching, and those radiationless mechanisms believed to be originated by PET. Finally, this Account provides for the first time a computational protocol to quantitatively estimate this phenomenon and provides the ingredients for the optimal design of fluorescent probes from first principles.
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Affiliation(s)
- Daniel Escudero
- CEISAM UMR CNRS
6230, Université de Nantes, 2 rue de la Houssinière, BP 92208, 44322 Cedex 3 Nantes, France
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