1
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Antón-Cánovas T, Achelle S, Paz Fernández-Liencres M, Navarro A, Alonso F, Rodríguez-López J. Acidochromism of amino-substituted indolizine chromophores: towards white light emission. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
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2
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Plaza-Pedroche R, Fernández-Liencres MP, Jiménez-Pulido SB, Illán-Cabeza NA, Achelle S, Navarro A, Rodríguez-López J. Excited-State Intramolecular Proton Transfer in 2-(2'-Hydroxyphenyl)pyrimidines: Synthesis, Optical Properties, and Theoretical Studies. ACS Appl Mater Interfaces 2022; 14:24964-24979. [PMID: 35579566 PMCID: PMC9164210 DOI: 10.1021/acsami.2c05439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
The development of fluorescence materials with switched on/off emission has attracted great attention owing to the potential application of these materials in chemical sensing. In this work, the photophysical properties of a series of original 2-(2'-hydroxyphenyl)pyrimidines were thoroughly studied. The compounds were prepared by following well-established and straightforward methodologies and showed very little or null photoluminescence both in solution and in the solid state. This absence of emission can be explained by a fast proton transfer from the OH group to the nitrogen atoms of the pyrimidine ring to yield an excited tautomer that deactivates through a nonradiative pathway. The key role of the OH group in the emission quenching was demonstrated by the preparation of 2'-unsubstituted derivatives, all of which exhibited violet or blue luminescence. Single crystals of some compounds suitable for an X-ray diffraction analysis could be obtained, which permitted us to investigate inter- and intramolecular interactions and molecular packing structures. The protonation of the pyrimidine ring by an addition of trifluoroacetic acid inhibited the excited-state intramolecular proton transfer (ESIPT) process, causing a reversible switch on fluorescence response detectable by the naked eye. This acidochromic behavior allows 2-(2'-hydroxyphenyl)pyrimidines to be used as solid-state acid-base vapor sensors and anticounterfeiting agents. Extensive density functional theory and its time-dependent counterpart calculations at the M06-2X/6-31+G** level of theory were performed to rationalize all the experimental results and understand the impact of protonation on the different optical transitions.
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Affiliation(s)
- Rodrigo Plaza-Pedroche
- Área
de Química Orgánica, Facultad de Ciencias y Tecnologías
Químicas, Universidad de Castilla-La
Mancha, Avda Camilo José Cela 10, 13071 Ciudad Real, Spain
| | - M. Paz Fernández-Liencres
- Dpto.
de Química Física y Analítica, Facultad de Ciencias
Experimentales, Campus Las Lagunillas, Universidad
de Jaén, 23071 Jaén, Spain
| | - Sonia B. Jiménez-Pulido
- Dpto.
de Química Inorgánica y Orgánica, Facultad de
Ciencias Experimentales, Campus Las Lagunillas, Universidad de Jaén, 23071 Jaén, Spain
| | - Nuria A. Illán-Cabeza
- Dpto.
de Química Inorgánica y Orgánica, Facultad de
Ciencias Experimentales, Campus Las Lagunillas, Universidad de Jaén, 23071 Jaén, Spain
| | - Sylvain Achelle
- Univ
Rennes, CNRS, Institut des Sciences Chimiques de Rennes - UMR 6226, F-35000 Rennes, France
| | - Amparo Navarro
- Dpto.
de Química Física y Analítica, Facultad de Ciencias
Experimentales, Campus Las Lagunillas, Universidad
de Jaén, 23071 Jaén, Spain
| | - Julián Rodríguez-López
- Área
de Química Orgánica, Facultad de Ciencias y Tecnologías
Químicas, Universidad de Castilla-La
Mancha, Avda Camilo José Cela 10, 13071 Ciudad Real, Spain
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3
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Domínguez R, Moral M, Fernández-Liencres MP, Peña-Ruiz T, Tolosa J, Canales-Vázquez J, García-Martínez JC, Navarro A, Garzón-Ruiz A. Understanding the Driving Mechanisms of Enhanced Luminescence Emission of Oligo(styryl)benzenes and Tri(styryl)-s-triazine. Chemistry 2020; 26:3373-3384. [PMID: 31967698 DOI: 10.1002/chem.201905336] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/10/2020] [Indexed: 01/23/2023]
Abstract
This work is focused on unraveling the mechanisms responsible for the aggregation-induced enhanced emission and solid-state luminescence enhancement effects observed in star-shaped molecules based on 1,3,5-tris(styryl)benzene and tri(styryl)-s-triazine cores. To achieve this, the photophysical properties of this set of molecules were analyzed in three states: free molecules, molecular aggregates in solution, and the solid state. Different spectroscopy and microscopy experiments and DFT calculations were conducted to scrutinize the causative mechanisms of the luminescence enhancement phenomenon observed in some experimental conditions. Enhanced luminescence emission was interpreted in the context of short- and long-range excitonic coupling mechanisms and the restriction of intramolecular vibrations. Additionally, we found that the formation of π-stacking aggregates could block E/Z photoisomerization through torsional motions between phenylene rings in the excited state, and hence, enhancing the luminescence of the system.
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Affiliation(s)
- Rocío Domínguez
- Department of Inorganic, Organic and Biochemistry, Faculty of Pharmacy, University of Castilla-La Mancha, José María Sánchez Ibañez s/n, 02071, Albacete, Spain.,Regional Center for Biomedical Research (CRIB), University of Castilla-La Mancha, Almansa s/n, 02071, Albacete, Spain
| | - Mónica Moral
- Renewable Energy Research Institute, University of Castilla-La Mancha, Paseo de la Investigación 1, 02071, Albacete, Spain
| | - M Paz Fernández-Liencres
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, University of Jaén, Campus Las Lagunillas, 23071, Jaén, Spain
| | - Tomás Peña-Ruiz
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, University of Jaén, Campus Las Lagunillas, 23071, Jaén, Spain
| | - Juan Tolosa
- Department of Inorganic, Organic and Biochemistry, Faculty of Pharmacy, University of Castilla-La Mancha, José María Sánchez Ibañez s/n, 02071, Albacete, Spain.,Regional Center for Biomedical Research (CRIB), University of Castilla-La Mancha, Almansa s/n, 02071, Albacete, Spain
| | - Jesús Canales-Vázquez
- Renewable Energy Research Institute, University of Castilla-La Mancha, Paseo de la Investigación 1, 02071, Albacete, Spain
| | - Joaquín C García-Martínez
- Department of Inorganic, Organic and Biochemistry, Faculty of Pharmacy, University of Castilla-La Mancha, José María Sánchez Ibañez s/n, 02071, Albacete, Spain.,Regional Center for Biomedical Research (CRIB), University of Castilla-La Mancha, Almansa s/n, 02071, Albacete, Spain
| | - Amparo Navarro
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, University of Jaén, Campus Las Lagunillas, 23071, Jaén, Spain
| | - Andrés Garzón-Ruiz
- Department of Physical Chemistry, Faculty of Pharmacy, University of Castilla-La Mancha, José María Sánchez Ibañez s/n, 02071, Albacete, Spain
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4
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Moral M, Domínguez R, Fernández-Liencres MP, Garzón-Ruiz A, García-Martínez JC, Navarro A. Photophysical features and semiconducting properties of propeller-shaped oligo(styryl)benzenes. J Chem Phys 2019; 150:064309. [DOI: 10.1063/1.5079935] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Affiliation(s)
- Mónica Moral
- Renewable Energy Research Institute, University of Castilla-La Mancha, Paseo de la Investigación 1, 02071 Albacete, Spain
| | - Rocío Domínguez
- Department of Inorganic, Organic Chemistry and Biochemistry, Faculty of Pharmacy, University of Castilla-La Mancha, 02071 Albacete, Spain
- Regional Center for Biomedical Research (CRIB), C/ Almansa s/n, 02071 Albacete, Spain
| | - M. Paz Fernández-Liencres
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, Universidad de Jaén, 23071 Jaén, Spain
| | - Andrés Garzón-Ruiz
- Department of Physical Chemistry, Faculty of Pharmacy, University of Castilla-La Mancha, 02071 Albacete, Spain
| | - Joaquín C. García-Martínez
- Department of Inorganic, Organic Chemistry and Biochemistry, Faculty of Pharmacy, University of Castilla-La Mancha, 02071 Albacete, Spain
- Regional Center for Biomedical Research (CRIB), C/ Almansa s/n, 02071 Albacete, Spain
| | - Amparo Navarro
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, Universidad de Jaén, 23071 Jaén, Spain
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5
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Zhang Y, Hanifi DA, Fernández-Liencres MP, Klivansky LM, Ma B, Navarro A, Liu Y. Understanding Electron Transport in Disk-Shaped Triphenylene-Tris(naphthaleneimidazole)s through Structural Modification and Theoretical Investigation. ACS Appl Mater Interfaces 2017; 9:20010-20019. [PMID: 28534391 DOI: 10.1021/acsami.7b03795] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Disk-shaped molecules with large aromatic π-surfaces are a class of organic semiconductors in which the charge-carrier transport properties could be greatly facilitated by preferred intermolecular stacking of the π-surfaces. The optical and electronic properties are not only determined by the core aromatic structure of these disk-shaped molecules but are also strongly dependent on the side chains, which directly impact the molecular self-assembly behavior in condensed phases. Triphenylene-tris(naphthaleneimidazole) (TP-TNI) is a recently reported n-type semiconductor featuring a large π-core and branched side chains, with an electron-transporting mobility reaching 10-4 cm2 V-1 s-1. To further improve material performance, a detailed study is needed to understand the dependence of carrier transport properties on both the core electronic structure and side chain. Here, we present the detailed synthesis and characterization of a TP-TNI derivative bearing linear side chains, which has demonstrated a field-effect electron-transport mobility of up to 1.3 × 10-3 cm2 V-1 s-1. The more than 1 order improvement in electron-transport properties over the branched side chain homologue can be correlated to ordered twisted packing in the thin film, as revealed by in situ variable temperature grazing incidence wide-angle X-ray scattering studies. In-depth theoretical understanding of the frontier orbitals, reorganization energies, and charge-transfer integrals of TP-TNI molecules has provided further insight into the relationship between the molecular stacking geometry and charge-transport properties.
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Affiliation(s)
- Yue Zhang
- The Molecular Foundry and Material Sciences Division, Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, California 94720, United States
- Institute of Advanced Materials (IAM), Nanjing Tech University , 30 South Puzhu Road, 211816 Nanjing, China
| | - David A Hanifi
- Department of Chemistry, Stanford University , Palo Alto, California 94305, United States
| | - M Paz Fernández-Liencres
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, Universidad de Jaén , Campus Las Lagunillas, E23071 Jaén, Spain
| | - Liana M Klivansky
- The Molecular Foundry and Material Sciences Division, Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Biwu Ma
- Department of Chemical & Biomedical Engineering, FAMU-FSU College of Engineering, Materials Science Program, Florida State University , Tallahassee, Florida 32310, United States
| | - Amparo Navarro
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, Universidad de Jaén , Campus Las Lagunillas, E23071 Jaén, Spain
| | - Yi Liu
- The Molecular Foundry and Material Sciences Division, Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, California 94720, United States
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6
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Navarro A, Fernández-Liencres MP, Peña-Ruiz T, García G, Granadino-Roldán JM, Fernández-Gómez M. Effect of five-membered ring and heteroatom substitution on charge transport properties of perylene discotic derivatives: A theoretical approach. J Chem Phys 2016; 145:054903. [PMID: 27497578 DOI: 10.1063/1.4960051] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Density functional theory calculations were carried out to investigate the evolvement of charge transport properties of a set of new discotic systems as a function of ring and heteroatom (B, Si, S, and Se) substitution on the basic structure of perylene. The replacement of six-membered rings by five-membered rings in the reference compound has shown a prominent effect on the electron reorganization energy that decreases ∼0.2 eV from perylene to the new carbon five-membered ring derivative. Heteroatom substitution with boron also revealed to lower the LUMO energy level and increase the electron affinity, therefore lowering the electron injection barrier compared to perylene. Since the rate of the charge transfer between two molecules in columnar discotic systems is strongly dependent on the orientation of the stacked cores, the total energy and transfer integral of a dimer as a disc is rotated with respect to the other along the stacking axis have been predicted. Aimed at obtaining a more realistic approach to the bulk structure, the molecular geometry of clusters made up of five discs was fully optimized, and charge transfer rate and mobilities were estimated for charge transport along a one dimensional pathway. Heteroatom substitution with selenium yields electron transfer integral values ∼0.3 eV with a relative disc orientation of 25°, which is the preferred angle according to the dimer energy profile. All the results indicate that the tetraselenium-substituted derivative, not synthetized so far, could be a promising candidate among those studied in this work for the fabrication of n-type semiconductors based on columnar discotic liquid crystals materials.
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Affiliation(s)
- Amparo Navarro
- Departamento de Química Física y Analítica, Universidad de Jaén, Campus Las Lagunillas, E23071 Jaén, Spain
| | - M Paz Fernández-Liencres
- Departamento de Química Física y Analítica, Universidad de Jaén, Campus Las Lagunillas, E23071 Jaén, Spain
| | - Tomás Peña-Ruiz
- Departamento de Química Física y Analítica, Universidad de Jaén, Campus Las Lagunillas, E23071 Jaén, Spain
| | - Gregorio García
- Instituto de Energía Solar and Departamento TFB, E.T.S.I. Telecomunicación, Universidad Politécnica de Madrid, Ciudad Universitaria, Madrid 28040, Spain
| | - José M Granadino-Roldán
- Departamento de Química Física y Analítica, Universidad de Jaén, Campus Las Lagunillas, E23071 Jaén, Spain
| | - Manuel Fernández-Gómez
- Departamento de Química Física y Analítica, Universidad de Jaén, Campus Las Lagunillas, E23071 Jaén, Spain
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7
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Jiménez-Pulido SB, Illán-Cabeza NA, Hueso-Ureña F, Maldonado CR, Sánchez-Sánchez P, Fernández-Liencres MP, Fernández-Gómez M, Moreno-Carretero MN. A combined experimental and DFT investigation on the structure and CO-releasing properties of mono and binuclear fac-ReI(CO)3 complexes with 5-pyridin-2-ylmethylene-amino uracils. Dalton Trans 2016; 45:15142-15154. [DOI: 10.1039/c6dt02208a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New tricarbonyl rhenium(i) complexes with 5-substituted-6-amino-1,3-dimethyluracils are reported.
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Affiliation(s)
- Sonia B. Jiménez-Pulido
- Department of Inorganic and Organic Chemistry
- Campus Las Lagunillas (B3)
- University of Jaén
- 23071-Jaén
- Spain
| | - Nuria A. Illán-Cabeza
- Department of Inorganic and Organic Chemistry
- Campus Las Lagunillas (B3)
- University of Jaén
- 23071-Jaén
- Spain
| | - Francisco Hueso-Ureña
- Department of Inorganic and Organic Chemistry
- Campus Las Lagunillas (B3)
- University of Jaén
- 23071-Jaén
- Spain
| | - Carmen R. Maldonado
- Department of Inorganic Chemistry
- Campus Fuentenueva
- University of Granada
- 18071-Granada
- Spain
| | | | - M. Paz Fernández-Liencres
- Department of Physical and Analytical Chemistry
- Campus Las Lagunillas (B3)
- University of Jaén
- 23071-Jaén
- Spain
| | - Manuel Fernández-Gómez
- Department of Physical and Analytical Chemistry
- Campus Las Lagunillas (B3)
- University of Jaén
- 23071-Jaén
- Spain
| | - Miguel N. Moreno-Carretero
- Department of Inorganic and Organic Chemistry
- Campus Las Lagunillas (B3)
- University of Jaén
- 23071-Jaén
- Spain
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8
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He B, Zhang BA, Liu F, Navarro A, Fernández-Liencres MP, Lu R, Lo K, Chen TL, Russell TP, Liu Y. Electronic and Morphological Studies of Conjugated Polymers Incorporating a Disk-Shaped Polycyclic Aromatic Hydrocarbon Unit. ACS Appl Mater Interfaces 2015; 7:20034-20045. [PMID: 26302772 DOI: 10.1021/acsami.5b04907] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
As more research findings have shown the correlation between ordering in organic semiconductor thin films and device performance, it is becoming more essential to exercise control of the ordering through structural tuning. Many recent studies have focused on the influence of side chain engineering on polymer packing orientation in thin films. However, the impact of the size and conformation of aromatic surfaces on thin film ordering has not been investigated in great detail. Here we introduce a disk-shaped polycyclic aromatic hydrocarbon building block with a large π surface, namely, thienoazacoronenes (TACs), as a donor monomer for conjugated polymers. A series of medium bandgap conjugated polymers have been synthesized by copolymerizing TAC with electron donating monomers of varying size. The incorporation of the TAC unit in such semiconducting polymers allows a systematic investigation, both experimentally and theoretically, of the relationships between polymer conformation, electronic structure, thin film morphology, and charge transport properties. Field effect transistors based on these polymers have shown good hole mobilities and photoresponses, proving that TAC is a promising building block for high performance optoelectronic materials.
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Affiliation(s)
| | - Benjamin A Zhang
- Department of Chemistry, University of California, Berkeley , Berkeley, California 94720, United States
| | | | - Amparo Navarro
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, Universidad de Jaén , Campus Las Lagunillas, E23071 Jaén, Spain
| | - M Paz Fernández-Liencres
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, Universidad de Jaén , Campus Las Lagunillas, E23071 Jaén, Spain
| | | | - Kelvin Lo
- Department of Chemistry, University of California, Berkeley , Berkeley, California 94720, United States
| | | | - Thomas P Russell
- Department of Polymer Science and Engineering, University of Massachusetts , 120 Governors Drive, Amherst, Massachusetts 01003, United States
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9
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Navarro A, Fernández-Liencres MP, García G, Granadino-Roldán JM, Fernández-Gómez M. A DFT approach to the charge transport related properties in columnar stacked π-conjugated N-heterocycle cores including electron donor and acceptor units. Phys Chem Chem Phys 2015; 17:605-18. [DOI: 10.1039/c4cp04220d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Theoretical design of new, ambipolar DLC donor–acceptor systems based on tris[1,2,4]triazolo[1,3,5]triazine cores.
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Affiliation(s)
- Amparo Navarro
- Departamento de Química Física y Analítica
- Facultad de Ciencias Experimentales
- Universidad de Jaén
- Jaén
- Spain
| | - M. Paz Fernández-Liencres
- Departamento de Química Física y Analítica
- Facultad de Ciencias Experimentales
- Universidad de Jaén
- Jaén
- Spain
| | | | - José M. Granadino-Roldán
- Departamento de Química Física y Analítica
- Facultad de Ciencias Experimentales
- Universidad de Jaén
- Jaén
- Spain
| | - Manuel Fernández-Gómez
- Departamento de Química Física y Analítica
- Facultad de Ciencias Experimentales
- Universidad de Jaén
- Jaén
- Spain
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10
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Turbay S, Piro OE, Echeverría GA, Navarro A, Fernández-Liencres MP, Fortuna M, Tuttolomondo ME. Theoretical and experimental study of a novel psolaren derivate: (E)-9-(3,4-dimethylpent-2-enyloxy)-7H-furo[3,2-g]chromen-7-one. Spectrochim Acta A Mol Biomol Spectrosc 2014; 123:71-77. [PMID: 24389002 DOI: 10.1016/j.saa.2013.12.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 11/26/2013] [Accepted: 12/05/2013] [Indexed: 06/03/2023]
Abstract
A new psolaren derivate, (E)-9-(3,4-dimethylpent-2-enyloxy)-7H-furo[3,2-g]chromen-7-one, has been isolated and characterized by experimental and theoretical methodologies. The solid state molecular structure has been determined by X-ray diffraction methods. The substance crystallizes in the monoclinic P21/c space group with a=4.2389(5), b=26.090(3), c=12.482(1)Å, β=96.990(9)°, and Z=4 molecules per unit cell. The crystal structure shows the molecule fused phenyl and hetero-cycle rings to be coplanar with each other. Ab initio(MP2) and DFT methods have been used to predict the molecular structure in the isolated molecule approximation and the results compared with the experimental data. The MP2/6-311G(d,p) calculations are in good agreement with the X-ray results. The calculated HOMO-LUMO energy gap shows that the intra-molecular charge transfer could easily occur, a prediction closely related to the observed bioactivity of this new compound. In addition, the infrared absorption and Raman dispersion spectra were recorded and an assignment of the observed spectral features to molecular vibrations was made. The vibrational study was assisted by quantum chemistry calculations at the MP2 and DFT level, which provided theoretical mode frequencies. The study was completed by natural bond orbital (NBO) analysis.
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Affiliation(s)
- S Turbay
- Cátedra de Química Orgánica, Dpto. de Ciencias Básicas, Facultad de Agronomía y Zootecnia, Universidad Nacional de Tucumán, Av. N. Kirchner 1900, 4000 Tucumán, Argentina
| | - O E Piro
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata e IFLP (CONICET, CCT-La Plata), C.C. 67, 1900 La Plata, Argentina
| | - G A Echeverría
- Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata e IFLP (CONICET, CCT-La Plata), C.C. 67, 1900 La Plata, Argentina
| | - A Navarro
- Departamento de Química Física y Analítica, Universidad de Jaén, Campus Las Lagunillas, 23071 Jaén, Spain
| | - M P Fernández-Liencres
- Departamento de Química Física y Analítica, Universidad de Jaén, Campus Las Lagunillas, 23071 Jaén, Spain
| | - M Fortuna
- Cátedra de Química Orgánica, Dpto. de Ciencias Básicas, Facultad de Agronomía y Zootecnia, Universidad Nacional de Tucumán, Av. N. Kirchner 1900, 4000 Tucumán, Argentina.
| | - M E Tuttolomondo
- Instituto de Química Física, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, San Lorenzo 456, 4000 Tucumán, Argentina.
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11
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Granadino-Roldán JM, Garzón A, Moral M, García G, Peña-Ruiz T, Paz Fernández-Liencres M, Navarro A, Fernández-Gómez M. Theoretical estimation of the optical bandgap in a series of poly(aryl-ethynylene)s: A DFT study. J Chem Phys 2014; 140:044908. [DOI: 10.1063/1.4862802] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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12
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Jiménez-Pulido SB, Hueso-Ureña F, Fernández-Liencres MP, Fernández-Gómez M, Moreno-Carretero MN. Heteropolyhedral silver compounds containing the polydentate ligandN,N,O-E-[6-(hydroxyimino)ethyl]-1,3,7-trimethyllumazine. Preparation, spectral and XRD structural study and AIM calculations. Dalton Trans 2013; 42:530-41. [DOI: 10.1039/c2dt32044d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Sonia B Jiménez-Pulido
- Department of Inorganic and Organic Chemistry and Campus Las Lagunillas (B3), University of Jaén, 23071-Jaén, Spain
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13
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Garzón A, Granadino-Roldán JM, Moral M, García G, Fernández-Liencres MP, Navarro A, Peña-Ruiz T, Fernández-Gómez M. Density functional theory study of the optical and electronic properties of oligomers based on phenyl-ethynyl units linked to triazole, thiadiazole, and oxadiazole rings to be used in molecular electronics. J Chem Phys 2010; 132:064901. [DOI: 10.1063/1.3309585] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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14
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Garcia G, Garzón A, Granadino-Roldán JM, Moral M, Fernández-Liencres MP, Navarro A, Fernández-Gómez M. The Role of Linear Alkyl and Alkoxy Side Chains in the Modulation of the Structure and Electrical Properties of Bithiophene:a Theoretical Study. Aust J Chem 2010. [DOI: 10.1071/ch10050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In the present work, we have studied from a theoretical perspective the geometry and electronic properties of 2,2′-bithiophene (BT) and its derivatives 3,4′-alkyl-2,2′-bithiophene (3,4′ABT) and 3,4′-alkoxy-2,2′-bithiophene (3,4′OABT). Properties such as planarity, bond lengths, electron density, highest occupied molecular orbital → lowest unoccupied molecular orbital (HOMO → LUMO) excitation energy and π-delocalization energy, which are related to the electrical conductivity, were calculated and analyzed as a function of both the nature and length of the substituent. The oxidation process was also studied for the single-polaronic state. The ionization potential and the intramolecular reorganization energy were calculated following the semiclassical Marcus treatment. As a conclusion, the introduction of alkoxy chains in 3,4′-positions improves the electrical properties with respect to the bithiophene molecule and the corresponding alkyl derivatives.
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Granadino-Roldán JM, Garzón A, García G, Peña-Ruiz T, Fernández-Liencres MP, Navarro A, Fernández-Gómez M. Theoretical study of the effect of ethynyl group on the structure and electrical properties of phenyl-thiadiazole systems as precursors of electron-conducting materials. J Chem Phys 2009; 130:234907. [DOI: 10.1063/1.3149856] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Navarro A, Fernández-Liencres MP, Peña-Ruiz T, Granadino-Roldán JM, Fernández-Gómez M, Domínguez-Espinosa G, Sanchís MJ. A quantum mechanical study on polymer flexibility: Extended model from monomer to tetramer of 2- and 4-bromostyrenes. POLYMER 2009. [DOI: 10.1016/j.polymer.2008.10.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ceacero-Vega AA, Ruiz TP, Gómez MF, Roldán JMG, Navarro A, Fernández-Liencres MP, Jayasooriya UA. Molecular Structure, Vinyl Rotation Barrier, and Vibrational Dynamics of 2,6-Dichlorostyrene. A Theoretical and Experimental Research. J Phys Chem A 2007; 111:6406-19. [PMID: 17591757 DOI: 10.1021/jp071817i] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The molecular structure of 2,6-dichlorostyrene has been analyzed at MP2 and DFT levels using different basis sets concluding in a nonplanar geometry. The influence of either the level of theory or the nature of the substituent has been assessed. The vinyl-phenyl torsion barrier has also been investigated as a function of level of theory. The ultimate factors responsible for the torsion barrier have been studied using two different partitioning schemes, i.e., the total electronic potential energy and the natural bond orbital, NBO. A topological analysis of the electron density within the atom-in-molecule, AIM, theory predicts soft intramolecular chlorine (ring)-hydrogen (vinyl) contacts when the system becomes planar. A first complete vibrational study has been performed using theoretical data and experimental vibrational frequencies from IR, Raman and, for the first time, inelastic neutron scattering, INS, spectra. The new assignment proposed is based on a scaled quantum mechanical, SQM, force field and the wavenumber linear scaling, WLS, approach.
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Affiliation(s)
- Antonio A Ceacero-Vega
- Department of Physical and Analytical Chemistry, University of Jaén, Campus Las Lagunillas E23071 Jaén, Spain
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Navarro A, Fernández-Gómez M, López-González JJ, Fernández-Liencres MP, Martínez-Torres E, Tomkinson J, Kearley GJ. Inelastic Neutron Scattering Spectrum and Quantum Mechanical Calculations on the Internal Vibrations of Pyrimidine. J Phys Chem A 1999. [DOI: 10.1021/jp991173h] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amparo Navarro
- Department of Physical and Analytical Chemistry, University of Jaén, 23071 Jaén, Spain
| | | | | | | | - E. Martínez-Torres
- Department of Physical Chemistry, University of Castilla-La Mancha, 13003 Ciudad Real, Spain
| | - J. Tomkinson
- Rutherford Appleton Laboratory, Chilton, OX11, United Kingdom
| | - G. J. Kearley
- Institut Laue Langevin, BP 156, 38042 Grenoble, Cedex 09, France
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