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Doddamani RV, Rachipudi PS, Pattanashetti NA, Kariduraganavar MY. Synthesis, structural characterization and computational study of NLO-responsive chromophores and second-order coefficients of thermally crosslinked polymers. NEW J CHEM 2019. [DOI: 10.1039/c9nj03389k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The HOMO and LUMO structures of compounds 2, 4 and 6 with their band gap values.
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Sharma A, Zamisa SJ, Noki S, Almarhoon Z, El-Faham A, Torre BGDL, Albericio F. Crystal structure, spectroscopic studies and theoretical studies of thiobarbituric acid derivatives: understanding the hydrogen-bonding patterns. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2018; 74:1703-1714. [PMID: 30516155 DOI: 10.1107/s2053229618015516] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 11/02/2018] [Indexed: 11/10/2022]
Abstract
In addition to their wide-ranging applications in the pharmaceutical industry, thiobarbituric acid (TBA) derivatives are also known to possess applications in engineering and materials science. 20 TBA derivatives, with diversity at the N and C-5 positions through acylation, Schiff base formation, Knoevenagel condensation, thioamide and enamine formation, were studied. The absolute configurations for six derivatives, namely 5-acetyl-1,3-diethyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione, C10H14N2O3S, A01, 1,3-diethyl-5-propionyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione, C11H16N2O3S, A02, tert-butyl [1-(1,3-diethyl-4,6-dioxo-2-thioxohexahydropyrimidin-5-yl)-3-methyl-1-oxobutan-2-yl]carbamate, C18H29N3O5S, A06, 1,3-diethyl-4,6-dioxo-2-thioxo-N-(p-tolyl)hexahydropyrimidine-5-carbothioamide, C16H19N3O2S2, A13, 5-(1-aminoethylidene)-1,3-diethyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione, C10H15N3O2S, A17, and 5-(1-aminopropylidene)-1,3-diethyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione, C11H17N3O2S, A18, were confirmed by single-crystal X-ray crystallography, which indicates the formation of intramolecular hydrogen bonding in all six cases and intermolecular hydrogen bonding for A17. In A13, the presence of two intramolecular hydrogen bonds was observed. The stabilization of the enol form over the keto form was confirmed by computation. In order to convert the keto form to the enol form, an energy barrier of 55.05 kcal mol-1 needs to be overcome, as confirmed by transition-state calculations.
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Affiliation(s)
- Anamika Sharma
- School of Health Sciences, University of KwaZulu Natal, University Road, Westville, Durban, 4000, South Africa
| | - Sizwe J Zamisa
- School of Chemistry and Physics, University of KwaZulu Natal, Private bag X54001, Westville campus, Durban, 4000, South Africa
| | - Sikabwe Noki
- School of Chemistry and Physics, University of KwaZulu Natal, Private bag X54001, Westville campus, Durban, 4000, South Africa
| | - Zainab Almarhoon
- Department of Chemistry, College of Science, King Saud University, 2455 Riyadh, 11451, Saudi Arabia
| | - Ayman El-Faham
- Department of Chemistry, College of Science, King Saud University, 2455 Riyadh, 11451, Saudi Arabia
| | - Beatriz G de la Torre
- KRISP, College of Health Sciences, University of KwaZulu Natal, Durban, 4001, South Africa
| | - Fernando Albericio
- School of Chemistry and Physics, University of KwaZulu Natal, Private bag X54001, Westville campus, Durban, 4000, South Africa
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Ferreira RCM, Costa SPG, Gonçalves H, Belsley M, Raposo MMM. Fluorescent phenanthroimidazoles functionalized with heterocyclic spacers: synthesis, optical chemosensory ability and two-photon absorption (TPA) properties. NEW J CHEM 2017. [DOI: 10.1039/c7nj02113e] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Fluorescent phenanthroimidazoles bearing heterocyclic spacers as novel optical chemosensors and two-photon absorption chromophores.
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Affiliation(s)
| | - Susana P. G. Costa
- Centre of Chemistry
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
- Portugal
| | - Hugo Gonçalves
- Centre of Physics
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
- Portugal
| | - Michael Belsley
- Centre of Physics
- University of Minho
- Campus of Gualtar
- 4710-057 Braga
- Portugal
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Marco AB, Burrezo PM, Mosteo L, Franco S, Garín J, Orduna J, Diosdado BE, Villacampa B, López Navarrete JT, Casado J, Andreu R. Polarization, second-order nonlinear optical properties and electrochromism in 4H-pyranylidene chromophores with a quinoid/aromatic thiophene ring bridge. RSC Adv 2015. [DOI: 10.1039/c4ra12791a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The second-order NLO responses and spectroelectrochemical properties of donor–π–acceptor systems featuring a quinoid/aromatic thiophene unit have been studied.
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Affiliation(s)
- A. Belén Marco
- Departamento de Química Orgánica
- ICMA
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
| | | | - Laura Mosteo
- Departamento de Química Orgánica
- ICMA
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
| | - Santiago Franco
- Departamento de Química Orgánica
- ICMA
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
| | - Javier Garín
- Departamento de Química Orgánica
- ICMA
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
| | - Jesús Orduna
- Departamento de Química Orgánica
- ICMA
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
| | - Beatriz E. Diosdado
- Servicio de Difracción de Rayos X y Análisis por Fluorescencia
- ICMA
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
| | - Belén Villacampa
- Departamento de Física de la Materia Condensada
- ICMA
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
| | | | - Juan Casado
- Departamento de Química Física
- Universidad de Málaga
- 29071 Málaga
- Spain
| | - Raquel Andreu
- Departamento de Química Orgánica
- ICMA
- Universidad de Zaragoza-CSIC
- 50009 Zaragoza
- Spain
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Marco AB, Martínez de Baroja N, Franco S, Garín J, Orduna J, Villacampa B, Revuelto A, Andreu R. Dithienopyrrole as a Rigid Alternative to the Bithiophene π Relay in Chromophores with Second-Order Nonlinear Optical Properties. Chem Asian J 2014; 10:188-97. [DOI: 10.1002/asia.201402870] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Indexed: 11/09/2022]
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Marco AB, Andreu R, Franco S, Garín J, Orduna J, Villacampa B, Diosdado BE, López Navarrete JT, Casado J. Push–pull systems bearing a quinoid/aromatic thieno[3,2-b]thiophene moiety: synthesis, ground state polarization and second-order nonlinear properties. Org Biomol Chem 2013; 11:6338-49. [DOI: 10.1039/c3ob41278d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Galán E, Andreu R, Garín J, Orduna J, Villacampa B, Diosdado BE. Cycloaddition reactions of polyenic donor–π-acceptor systems with an electron-rich alkyne: access to new chromophores with second-order optical nonlinearities. Org Biomol Chem 2012; 10:8684-91. [DOI: 10.1039/c2ob26515j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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