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Valverde C, Medeiros R, Franco LR, Osório FAP, Castro MA, Fonseca TL. Theoretical investigation on the linear and nonlinear optical properties of DAPSH crystal. Sci Rep 2023; 13:8616. [PMID: 37244899 DOI: 10.1038/s41598-023-35442-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 05/18/2023] [Indexed: 05/29/2023] Open
Abstract
The linear polarizability, first and second hyperpolarizabilities of the asymmetric unit of DAPSH crystal are studied and compared with available experimental results. The polarization effects are included using an iterative polarization procedure, which ensures the convergence of the dipole moment of DAPSH embedded within a polarization field generated by the surrounding asymmetric units whose atomic sites are considered as point charges. We estimate macroscopic susceptibilities from the results of the polarized asymmetric units in the unit cell, considering the significant contribution of the electrostatic interactions in crystal packing. The results show that the influence of the polarization effects leads to a marked decrease of the first hyperpolarizability, compared with the respective isolated counterpart, which improves the concordance with the experiment. There is a minor influence of polarization effects on the second hyperpolarizability but our estimated result for the third-order susceptibility, related to the NLO process of the intensity dependent refractive index, is significant as compared with the results for other organic crystals, such as chalcone-derivatives. In addition, supermolecule calculations are conducted for explicit dimers in presence of the electrostatic embedding to illustrate the role played by the electrostatic interactions in the hyperpolarizabilities of the DAPSH crystal.
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Affiliation(s)
- Clodoaldo Valverde
- Campus de Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás, Anápolis, GO, 75001-970, Brazil.
- Universidade Paulista, Goiânia, GO, 74845-090, Brazil.
| | - Renato Medeiros
- Campus de Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás, Anápolis, GO, 75001-970, Brazil
- Instituto de Física, Universidade Federal de Goiás, Goiânia, GO, 74690-900, Brazil
- Pontifícia Universidade Católica de Goiás, Goiânia, GO, 74605-010, Brazil
| | - Leandro R Franco
- Department of Engineering and Physics, Karlstad University, 65188, Karlstad, Sweden
| | - Francisco A P Osório
- Instituto de Física, Universidade Federal de Goiás, Goiânia, GO, 74690-900, Brazil
- Pontifícia Universidade Católica de Goiás, Goiânia, GO, 74605-010, Brazil
| | - Marcos A Castro
- Instituto de Física, Universidade Federal de Goiás, Goiânia, GO, 74690-900, Brazil
| | - Tertius L Fonseca
- Instituto de Física, Universidade Federal de Goiás, Goiânia, GO, 74690-900, Brazil.
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Brandão I, Fonseca TL, Franco LR, Georg HC, Castro MA. Density functional theory investigation of the second hyperpolarizability of the phenol blue in solution. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Siqueira Y, Lyra ML, Ramos TN, Champagne B, Manzoni V. Unveiling the relationship between structural and polarization effects on the first hyperpolarizability of a merocyanine dye. J Chem Phys 2022; 156:014305. [PMID: 34998341 DOI: 10.1063/5.0076490] [Citation(s) in RCA: 2] [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 nonlinear optical response, more specifically the Hyper-Rayleigh Scattering (HRS) response of the Brooker's merocyanine, has been calculated at the time-dependent density functional theory level and rationalized in terms of the structural changes and polarization effects induced by applied external electric fields. The structural change leads to large changes in the HRS response, while only slight variations were observed due to the polarization effects on the fixed quinoid form. Considering both structural and polarization contributions concurrently, the HRS response is dominated by cooperative behavior of those effects for weak and intermediate electric field strengths. At the same time, the competition between both effects was a crucial factor in the region of strong electric fields. The obtained results can lead to an easier understanding for upcoming studies considering more realistic models of solvents where it is not simple to disentangle these contributions.
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Affiliation(s)
- Ysmailyn Siqueira
- Instituto de Física, Universidade Federal de Alagoas, UFAL, 57072-970 Maceió, AL, Brazil
| | - Marcelo L Lyra
- Instituto de Física, Universidade Federal de Alagoas, UFAL, 57072-970 Maceió, AL, Brazil
| | - Tárcius N Ramos
- Theoretical Chemistry Lab, Unit of Theoretical and Structural Physical Chemistry, NISM (Namur Institute of Structured Matter), University of Namur, rue de Bruxelles, 61, B-5000 Namur, Belgium
| | - Benoît Champagne
- Theoretical Chemistry Lab, Unit of Theoretical and Structural Physical Chemistry, NISM (Namur Institute of Structured Matter), University of Namur, rue de Bruxelles, 61, B-5000 Namur, Belgium
| | - Vinícius Manzoni
- Instituto de Física, Universidade Federal de Alagoas, UFAL, 57072-970 Maceió, AL, Brazil
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Andrade-Filho T, Silva T, Belo E, Raiol A, de Oliveira RV, Marinho PS, Bitencourt HR, Marinho AM, da Cunha AR, Gester R. Insights and modelling on the nonlinear optical response, reactivity, and structure of chalcones and dihydrochalcones. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Density Functional Theory Study of Substitution Effects on the Second-Order Nonlinear Optical Properties of Lindquist-Type Organo-Imido Polyoxometalates. Symmetry (Basel) 2021. [DOI: 10.3390/sym13091636] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Density functional theory and time-dependent density functional theory have been enacted to investigate the effects of donor and acceptor on the first hyperpolarizability of Lindquist-type organo-imido polyoxometalates (POMs). These calculations employ a range-separated hybrid exchange-correlation functional (ωB97X-D), account for solvent effects using the implicit polarizable continuum model, and analyze the first hyperpolarizabilities by using the two-state approximation. They highlight the beneficial role of strong donors as well as of π-conjugated spacers (CH=CH rather than C≡C) on the first hyperpolarizabilities. Analysis based on the unit sphere representation confirms the one-dimensional push-pull π-conjugated character of the POMs substituted by donor groups and the corresponding value of the depolarization ratios close to 5. Furthermore, the use of the two-state approximation is demonstrated to be suitable for explaining the origin of the variations of the first hyperpolarizabilities as a function of the characteristics of a unique low-energy charge-transfer excited state and to attribute most of the first hyperpolarizability changes to the difference of dipole moment between the ground and that charge-transfer excited state.
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