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Borji S, Vahedpour M. Quantum chemical design of near-infrared retinal-based pigments and evaluating their vibronic/electronic properties. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Sinha B, Goswami T, Paul S, Misra A. Spectral tuning of 11-cis retinal in conjugation with Au14 cluster and concomitant effect on isomerization: A theoretical outlook. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2021. [DOI: 10.1016/j.jpap.2021.100051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Teodoro FS, Elias MMC, Ferreira GMD, Adarme OFH, Savedra RML, Siqueira MF, da Silva LHM, Gil LF, Gurgel LVA. Synthesis and application of a new carboxylated cellulose derivative. Part III: Removal of auramine-O and safranin-T from mono- and bi-component spiked aqueous solutions. J Colloid Interface Sci 2018; 512:575-590. [DOI: 10.1016/j.jcis.2017.10.083] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 10/21/2017] [Accepted: 10/23/2017] [Indexed: 11/25/2022]
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de Magalhães CET, Savedra RML, Dias KS, Ramos R, Siqueira MF. Structural dependence of MEH-PPV chromism in solution. J Mol Model 2017; 23:91. [PMID: 28236031 DOI: 10.1007/s00894-017-3239-6] [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: 10/03/2016] [Accepted: 01/13/2017] [Indexed: 11/24/2022]
Abstract
The chromism observed in the MEH-PPV polymer in tetrahydrofuran (THF) solution is discussed as a function of the structural morphology of the backbone chains. To evaluate this phenomenon, we carried out simulations employing a hybrid methodology using molecular dynamics and quantum mechanical approaches. Our results support the hypothesis that the morphological order-disorder transition is related to the change from red to blue phase observed experimentally. The morphological disorder is associated with total or partial twisted arrangements in the polymer backbone, which induces an electronic conjugation length more confined to shorter segments. In addition, the main band of the MEH-PPV UV-Vis spectrum at the lower wavelength is related to the blue phase, in contrast to the red phase found for the more planar backbone chains.
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Affiliation(s)
- Carlos E T de Magalhães
- Laboratório de Simulação Molecular de Materiais, Departamento de Física, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, CEP 35400-000 Ouro, Preto-MG, Brazil
| | - Ranylson M L Savedra
- Laboratório de Simulação Molecular de Materiais, Departamento de Física, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, CEP 35400-000 Ouro, Preto-MG, Brazil
- Laboratório de Polímeros e Propriedades Eletrônicas de Materiais, Departamento de Física, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, 35400-000, Ouro Preto-MG, Brazil
| | - Karina S Dias
- Laboratório de Simulação Molecular de Materiais, Departamento de Física, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, CEP 35400-000 Ouro, Preto-MG, Brazil
| | - Rodrigo Ramos
- Instituto de Física, Universidade de São Paulo, Rua do Matão s/n, trav. R 187, São Paulo-SP, Brazil
| | - Melissa F Siqueira
- Laboratório de Simulação Molecular de Materiais, Departamento de Física, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, CEP 35400-000 Ouro, Preto-MG, Brazil.
- Laboratório de Polímeros e Propriedades Eletrônicas de Materiais, Departamento de Física, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, 35400-000, Ouro Preto-MG, Brazil.
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Magalhães CET, da Silva MM, Savedra RML, Siqueira MF. Anisotropic electron mobility in fluorene-PPV and fluorene-MEH-PPV. Mol Phys 2016. [DOI: 10.1080/00268976.2016.1265679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Carlos E. T. Magalhães
- Laboratory of Molecular Simulation of Material, Department of Physics, Federal University of Ouro Preto, Ouro Preto, MG, Brazil
| | - Marcio M. da Silva
- Laboratory of Molecular Simulation of Material, Department of Physics, Federal University of Ouro Preto, Ouro Preto, MG, Brazil
| | - Ranylson M. L. Savedra
- Laboratory of Molecular Simulation of Material, Department of Physics, Federal University of Ouro Preto, Ouro Preto, MG, Brazil
- Laboratory of Polymers and Electronic Properties of Materials, Department of Physics, Federal University of Ouro Preto, Ouro Preto, MG, Brazil
| | - Melissa F. Siqueira
- Laboratory of Molecular Simulation of Material, Department of Physics, Federal University of Ouro Preto, Ouro Preto, MG, Brazil
- Laboratory of Polymers and Electronic Properties of Materials, Department of Physics, Federal University of Ouro Preto, Ouro Preto, MG, Brazil
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Cardoso LC, Savedra RML, Silva MM, Ferreira GR, Bianchi RF, Siqueira MF. Effect of Blue Light on the Electronic and Structural Properties of Bilirubin Isomers: Insights into the Photoisomerization and Photooxidation Processes. J Phys Chem A 2015; 119:9037-42. [DOI: 10.1021/acs.jpca.5b04225] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lucas C. Cardoso
- Laboratório de Polímeros
e Propriedades Eletrônicas
de Materiais, Departamento de Física, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, 35400-000 Ouro Preto, Minas Gerais, Brazil
| | - Ranylson M. L. Savedra
- Laboratório de Polímeros
e Propriedades Eletrônicas
de Materiais, Departamento de Física, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, 35400-000 Ouro Preto, Minas Gerais, Brazil
| | - Mariana M. Silva
- Laboratório de Polímeros
e Propriedades Eletrônicas
de Materiais, Departamento de Física, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, 35400-000 Ouro Preto, Minas Gerais, Brazil
| | - Giovana R. Ferreira
- Laboratório de Polímeros
e Propriedades Eletrônicas
de Materiais, Departamento de Física, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, 35400-000 Ouro Preto, Minas Gerais, Brazil
| | - Rodrigo F. Bianchi
- Laboratório de Polímeros
e Propriedades Eletrônicas
de Materiais, Departamento de Física, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, 35400-000 Ouro Preto, Minas Gerais, Brazil
| | - Melissa F. Siqueira
- Laboratório de Polímeros
e Propriedades Eletrônicas
de Materiais, Departamento de Física, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, 35400-000 Ouro Preto, Minas Gerais, Brazil
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Transmission of electronic substituent effects along polyenic chains: a quantum chemical study based on structural variation and π-charge distribution. Struct Chem 2015. [DOI: 10.1007/s11224-015-0628-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Iyama T, Kawabata H, Tachikawa H. Effects of Point Charges on the Excitation Energies of Protonated Schiff Base of Retinal. ACTA ACUST UNITED AC 2010. [DOI: 10.1080/15533174.2010.486814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Tetsuji Iyama
- a Division of Materials Chemistry, Graduate School of Engineering , Hokkaido University , Sapporo, Japan
| | - Hiroshi Kawabata
- a Division of Materials Chemistry, Graduate School of Engineering , Hokkaido University , Sapporo, Japan
| | - Hiroto Tachikawa
- a Division of Materials Chemistry, Graduate School of Engineering , Hokkaido University , Sapporo, Japan
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Montero-Cabrera LA, Röhrig U, Padrón-Garcia JA, Crespo-Otero R, Montero-Alejo AL, Garcia de la Vega JM, Chergui M, Rothlisberger U. CNDOL: A fast and reliable method for the calculation of electronic properties of very large systems. Applications to retinal binding pocket in rhodopsin and gas phase porphine. J Chem Phys 2007; 127:145102. [DOI: 10.1063/1.2761869] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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