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Diketo-Pyrrolo Pyrrole-Based Acceptor-Acceptor Copolymers with Deep HOMO and LUMO Levels Absorbing in the Near Infrared. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12094494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A series of acceptor-acceptor (A-A’) alternated copolymers based on dithienodiketopyrrolo pyrrole were synthesized by copolymerizing it with itself and other different electron-poor monomers. The experimental and computed optoelectronic properties of four DPP-based copolymers, P(DPP-DPP) (with linear and branched chains), copolymer with diazapentalene P(DPP-DAP) and also with dioxothienopyrrolebenzodifurandione P(DPP-BTPBF), as well as thermal characterizations were described. UV-visible spectrophotometry and cyclic voltammetry were used to estimate the optical and electrochemical bandgaps, and were found as very small: 1.3, 1.0, and 0.9 eV for P(DPP-DPP), P(DPP-DAP), and P(DPP-BTPBF), respectively. The BTPBF unit allowed a strong reduction of the bandgap, leading to a broad absorption in the visible and near infra-red regions from 650 to 1450 nm. These results were compared to analogous donor-acceptor (D-A) copolymers previously reported, in which DPP is replaced by DTS, P(DTS-DPP), P(DTS-DAP), and P(DTS-BTPBF). The same trend was observed. By comparing A-A’ to D-A’ copolymers analogues, it was shown that the bandgap remained the same while both HOMO and LUMO levels were lowered by roughly 0.2 eV.
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2
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Roldao JC, Oliveira EF, Milián-Medina B, Gierschner J, Roca-Sanjuán D. Quantum-chemistry study of the ground and excited state absorption of distyrylbenzene: Multi vs single reference methods. J Chem Phys 2022; 156:044102. [DOI: 10.1063/5.0073189] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Affiliation(s)
- Juan Carlos Roldao
- Madrid Institute for Advanced Studies, IMDEA Nanoscience, Ciudad Universitaria de Cantoblanco, C. Faraday 9, 28049 Madrid, Spain
| | - Eliezer Fernando Oliveira
- Gleb Wataghin Institute of Physics, University of Campinas (UNICAMP), Campinas, SP, Brazil
- Center for Computational Engineering and Sciences (CCES), State University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Begoña Milián-Medina
- Department for Physical Chemistry, Faculty of Chemistry, University of Valencia, Av. Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - Johannes Gierschner
- Madrid Institute for Advanced Studies, IMDEA Nanoscience, Ciudad Universitaria de Cantoblanco, C. Faraday 9, 28049 Madrid, Spain
| | - Daniel Roca-Sanjuán
- Institute of Molecular Science, University of Valencia, 46980 Paterna, Spain
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4
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Ren Y, Li MY, Song YX, Sui MY, Sun GY, Qu XC, Xie P, Lu JL. Refined standards for simulating UV–vis absorption spectra of acceptors in organic solar cells by TD-DFT. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.113087] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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Polythiophene derivatives as chemical sensors: a DFT study on the influence of side groups. J Mol Model 2021; 27:17. [PMID: 33409576 DOI: 10.1007/s00894-020-04632-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 12/01/2020] [Indexed: 12/14/2022]
Abstract
Conjugated polymers have been considered promising candidates for applications in chemical sensors, mainly due to their high versatility of synthesis, low cost, light weight, and suitable optoelectronic properties. In this context, polythiophene (PT) derivatives have been successfully employed. However, at the same time that the versatility of the synthesis allows the production of varied derivatives, the complexity of interactions with analytes hinders an efficient design of compounds with improved sensing properties. In the present report, electronic structure calculations were employed to identify promising PT derivatives for chemical sensor applications. Structural, optoelectronic, and reactivity properties of a set of branched PT derivatives were evaluated. Adsorption studies considering different gaseous compounds were conducted for selected systems. The results suggest that an appropriate choice of the side groups can lead to derivatives with improved sensorial properties. In particular, PT-CN derivative was identified as the most promising compound for high sensitive chemical sensors towards SO2 and NH3 analytes.
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Dos Santos GC, Roldao JC, Shi J, Milián-Medina B, da Silva-Filho LC, Gierschner J. Combined Spectroscopic and TD-DFT Analysis to Elucidate Substituent and Acidochromic Effects in Organic Dyes: A Case Study on Amino- versus Nitro-Substituted 2,4-Diphenylquinolines. Chemphyschem 2020; 21:1797-1804. [PMID: 32602989 DOI: 10.1002/cphc.202000452] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/29/2020] [Indexed: 11/09/2022]
Abstract
A combined spectroscopic and TD-DFT case study was performed, to identify a robust method to calculate the complex near UV/Vis absorption spectra of various amino- vs. nitro-substituted 2,4-diphenylquinolines, which vary strongly under neutral and successively acidic conditions. For this, different DFT functionals were tested for geometry optimization and the TD part to calculate the neutral and different protonated species in a fast screening approach, i. e. using single point calculations in an implicit solvent. Offset-corrected M06HF, hitherto only applied to polymers, was identified as a suitable method to reproduce the absorption spectra in a reasonable fashion for all different substitution pattern and all different protonated species at different pH values; moreover, the method properly predicts the energetic ordering of low-lying n-π* and ππ* transitions, which is decisive for the non-/emissive nature of the different compounds. In all, this might provide a valuable tool for computer-aided design of related classes of compounds.
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Affiliation(s)
- Giovanny Carvalho Dos Santos
- Laboratory of Organic Synthesis and Processes (LOSP), São Paulo State University (UNESP), Department of Chemistry, School of Sciences, 17033-360, Bauru, São Paulo, Brazil.,IMDEA Nanociencia, Ciudad Universitaria de Cantoblanco, C/ Faraday 9, 28049, Madrid, Spain
| | - Juan Carlos Roldao
- IMDEA Nanociencia, Ciudad Universitaria de Cantoblanco, C/ Faraday 9, 28049, Madrid, Spain
| | - Junqing Shi
- IMDEA Nanociencia, Ciudad Universitaria de Cantoblanco, C/ Faraday 9, 28049, Madrid, Spain.,Xi'an Institute of Flexible Electronics, Northwestern Polytechnical University Dongda Town, Dongxiang Street 1, 710072, Xi'an, Shaanxi, China
| | - Begoña Milián-Medina
- Department for Physical Chemistry, Faculty of Chemistry, University of Valencia, Avenida Dr. Moliner 50, 46100, Burjassot, Valencia, Spain
| | - Luiz Carlos da Silva-Filho
- Laboratory of Organic Synthesis and Processes (LOSP), São Paulo State University (UNESP), Department of Chemistry, School of Sciences, 17033-360, Bauru, São Paulo, Brazil
| | - Johannes Gierschner
- IMDEA Nanociencia, Ciudad Universitaria de Cantoblanco, C/ Faraday 9, 28049, Madrid, Spain
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7
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Torres-Moya I, Vázquez-Guilló R, Fernández-Palacios S, Carrillo JR, Díaz-Ortiz Á, López Navarrete JT, Ponce Ortiz R, Ruiz Delgado MC, Mallavia R, Prieto P. Fluorene-Based Donor-Acceptor Copolymers Containing Functionalized Benzotriazole Units: Tunable Emission and their Electrical Properties. Polymers (Basel) 2020; 12:E256. [PMID: 31979007 PMCID: PMC7077272 DOI: 10.3390/polym12020256] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/15/2020] [Accepted: 01/18/2020] [Indexed: 11/16/2022] Open
Abstract
Monomers 4,7-dibromo-2H-benzo[d]1,2,3-triazole (m1) and 4,7-(bis(4-bromophenyl)ethynyl)-2H-benzo[d]1,2,3-triazole (m2) have been synthesized in good yields using different procedures. Monomers m1 and m2 have been employed for building new copolymers of fluorene derivatives by a Suzuki reaction under microwave irradiation using the same conditions. In each case different chain lengths have been achieved, while m1 gives rise to polymers for m2 oligomers have been obtained (with a number of monomer units lower than 7). Special interest has been paid to their photophysical properties due to excited state properties of these D-A units alternates, which have been investigated by density functional theory (DFT) calculations using two methods: (i) An oligomer approach and (ii) by periodic boundary conditions (PBC). It is highly remarkable the tunability of the photophysical properties as a function of the different monomer functionalization derived from 2H-benzo[d]1,2,3-triazole units. In fact, a strong modulation of the absorption and emission properties have been found by functionalizing the nitrogen N-2 of the benzotriazole units or by elongation of the π-conjugated core with the introduction of alkynylphenyl groups. Furthermore, the charge transport properties of these newly synthesized macromolecules have been approached by their implementation in organic field-effect transistors (OFETs) in order to assess their potential as active materials in organic optoelectronics.
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Affiliation(s)
- Iván Torres-Moya
- Department of Organic Chemistry, Faculty of Chemical Sciences and Technologies-IRICA, University of Castilla-La Mancha, 13071 Ciudad Real, Spain; (I.T.-M.); (J.R.C.); (Á.D.-O.)
| | - Rebeca Vázquez-Guilló
- Instituto de Investigación Desarrollo e innovación en Biotecnología Sanitaria de Elche (IDiBE), University of Miguel Hernández, 03202 Elche, Spain;
| | - Sara Fernández-Palacios
- Department of Physical Chemistry, Faculty of Sciences, University of Málaga, 29071 Málaga, Spain; (S.F.-P.); (J.T.L.N.); (R.P.O.)
| | - José Ramón Carrillo
- Department of Organic Chemistry, Faculty of Chemical Sciences and Technologies-IRICA, University of Castilla-La Mancha, 13071 Ciudad Real, Spain; (I.T.-M.); (J.R.C.); (Á.D.-O.)
| | - Ángel Díaz-Ortiz
- Department of Organic Chemistry, Faculty of Chemical Sciences and Technologies-IRICA, University of Castilla-La Mancha, 13071 Ciudad Real, Spain; (I.T.-M.); (J.R.C.); (Á.D.-O.)
| | - Juan Teodomiro López Navarrete
- Department of Physical Chemistry, Faculty of Sciences, University of Málaga, 29071 Málaga, Spain; (S.F.-P.); (J.T.L.N.); (R.P.O.)
| | - Rocío Ponce Ortiz
- Department of Physical Chemistry, Faculty of Sciences, University of Málaga, 29071 Málaga, Spain; (S.F.-P.); (J.T.L.N.); (R.P.O.)
| | - Mari Carmen Ruiz Delgado
- Department of Physical Chemistry, Faculty of Sciences, University of Málaga, 29071 Málaga, Spain; (S.F.-P.); (J.T.L.N.); (R.P.O.)
| | - Ricardo Mallavia
- Instituto de Investigación Desarrollo e innovación en Biotecnología Sanitaria de Elche (IDiBE), University of Miguel Hernández, 03202 Elche, Spain;
| | - Pilar Prieto
- Department of Organic Chemistry, Faculty of Chemical Sciences and Technologies-IRICA, University of Castilla-La Mancha, 13071 Ciudad Real, Spain; (I.T.-M.); (J.R.C.); (Á.D.-O.)
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8
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Brymora K, Khelifi W, Awada H, Blanc S, Hirsch L, Bousquet A, Lartigau-Dagron C, Castet F. Comprehensive theoretical and experimental study of near infrared absorbing copolymers based on dithienosilole. Polym Chem 2020. [DOI: 10.1039/d0py00330a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new conjugated copolymer with alternating dithienosilole and thienoisoindigo units displays improved near-infrared absorption compared to previously reported dithienosilole-based copolymers.
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Affiliation(s)
- Katarzyna Brymora
- Institut des Sciences Moléculaires (ISM
- UMR CNRS 5255)
- Université de Bordeaux
- 33405 Talence
- France
| | - Wissem Khelifi
- Universite de Pau et des Pays de l'Adour
- E2S UPPA
- CNRS
- IPREM
- Pau
| | - Hussein Awada
- Universite de Pau et des Pays de l'Adour
- E2S UPPA
- CNRS
- IPREM
- Pau
| | - Sylvie Blanc
- Universite de Pau et des Pays de l'Adour
- E2S UPPA
- CNRS
- IPREM
- Pau
| | | | | | | | - Frédéric Castet
- Institut des Sciences Moléculaires (ISM
- UMR CNRS 5255)
- Université de Bordeaux
- 33405 Talence
- France
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9
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Manzoor T, Pandith AH. Enhancing the photoresponse by CdSe‐Dye‐TiO
2
‐based multijunction systems for efficient dye‐sensitized solar cells: A theoretical outlook. J Comput Chem 2019; 40:2444-2452. [DOI: 10.1002/jcc.26019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 05/10/2019] [Accepted: 06/16/2019] [Indexed: 01/16/2023]
Affiliation(s)
- Taniya Manzoor
- Department of ChemistryUniversity of Kashmir Srinagar 190006 Kashmir India
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10
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Khelifi W, Awada H, Brymora K, Blanc S, Hirsch L, Castet F, Bousquet A, Lartigau-Dagron C. Halochromic Switch from the 1st to 2nd Near-Infrared Window of Diazapentalene–Dithienosilole Copolymers. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00675] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Wissem Khelifi
- CNRS/Univ Pau & Pays Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux, UMR 5254, 64000 Pau, France
| | - Hussein Awada
- CNRS/Univ Pau & Pays Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux, UMR 5254, 64000 Pau, France
| | - Katarzyna Brymora
- Institut des Sciences Moléculaires (ISM, UMR CNRS 5255), Université de Bordeaux, 351 cours de la Libération, 33405 Talence, France
| | - Sylvie Blanc
- CNRS/Univ Pau & Pays Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux, UMR 5254, 64000 Pau, France
| | - Lionel Hirsch
- Laboratoire de l’Intégration du Matériau au Système (IMS, UMR CNRS 5218), Université de Bordeaux, ENSCBP, 16 Avenue Pey-Berland, 33607 Pessac Cedex, France
| | - Frédéric Castet
- Institut des Sciences Moléculaires (ISM, UMR CNRS 5255), Université de Bordeaux, 351 cours de la Libération, 33405 Talence, France
| | - Antoine Bousquet
- CNRS/Univ Pau & Pays Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux, UMR 5254, 64000 Pau, France
| | - Christine Lartigau-Dagron
- CNRS/Univ Pau & Pays Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux, UMR 5254, 64000 Pau, France
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11
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Designing new quinoline-based organic photosensitizers for dye-sensitized solar cells (DSSC): a theoretical investigation. J Mol Model 2019; 25:75. [DOI: 10.1007/s00894-019-3958-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 02/05/2019] [Indexed: 10/27/2022]
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12
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Coleone AP, Lascane LG, Batagin-Neto A. Polypyrrole derivatives for optoelectronic applications: a DFT study on the influence of side groups. Phys Chem Chem Phys 2019; 21:17729-17739. [PMID: 31367712 DOI: 10.1039/c9cp02638j] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Conjugated organic polymers have been considered interesting materials for various technological applications, mainly due to their unique optoelectronic properties and the variety of methods employed in their synthesis. In this context, polypyrrole (PPy) derivatives have been widely employed. The great versatility of synthesis of this material allows the production of a number of derivatives with distinct properties, allowing their application in several areas. In this report, aiming to guide the design of compounds with specific features, electronic structure calculations were conducted to evaluate the influence of side groups in the structural, optical and electronic properties of PPy derivatives. The calculations were carried out for oligomeric systems in the framework of density functional theory. Preliminary benchmark studies were conducted by employing two distinct functionals for geometry optimization and evaluation of optoelectronic properties. Comparative studies of the bond length alternation, spatial and energetic distribution of the frontier orbitals, electronic gaps, exciton binding energies, optical absorption spectra and electronic density of states were conducted for each derivative and the influence of the side groups was discussed in terms of their electron donation/withdrawing properties. A set of simple rules (linear equations) was proposed for the prediction of optoelectronic properties of PPy derivatives. In particular, the results have shown that simple Hammett parameters of side groups are sufficient to enable the design of improved materials.
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Affiliation(s)
- Alex Pifer Coleone
- São Paulo State University (UNESP), Faculty of Sciences, POSMAT, Campus of Bauru, Bauru, SP, Brazil.
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13
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Substituent effects on furan-phenylene copolymer for photovoltaic improvement: A density functional study. Chem Phys 2018. [DOI: 10.1016/j.chemphys.2018.05.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Parthasarathy V, Pandey R, Das PK, Castet F, Blanchard-Desce M. Linear and Nonlinear Optical Properties of Tricyanopropylidene-Based Merocyanine Dyes: Synergistic Experimental and Theoretical Investigations. Chemphyschem 2017; 19:187-197. [DOI: 10.1002/cphc.201701143] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Venkatakrishnan Parthasarathy
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600 036 India
- Chimie et Photonique Moléculaire (CNRS, UMR 6510); Université de Rennes 1; 35042 Rennes France
| | - Ravindra Pandey
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; Bangalore 560012 India
- Department of Spectroscopy; Indian Association for the Cultivation of Science, Jadavpur; Kolkata 700032 India
| | - Puspendu Kumar Das
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; Bangalore 560012 India
| | - Frédéric Castet
- University of Bordeaux; Institut des Sciences Moléculaires (CNRS, UMR 5255); 33405 Talence France
| | - Mireille Blanchard-Desce
- Chimie et Photonique Moléculaire (CNRS, UMR 6510); Université de Rennes 1; 35042 Rennes France
- University of Bordeaux; Institut des Sciences Moléculaires (CNRS, UMR 5255); 33405 Talence France
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15
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Milad R, Essalah K, Abderrabba M. Optoelectronic and conductivity of ᴫ-conjugated polymers based on phenylenevinylene, 1,3,4-thiadiazole and thiophene: Suitable candidates for n-type organic semiconductors. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3750] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rim Milad
- Laboratoire Matériaux, Molécules et applications; Institut Préparatoire aux Etudes Scientifiques et Techniques; BP La Marsa Tunisia
- Faculté de Sciences de Bizerte (FSB); Université de Carthage; Bizerte Tunisia
| | - Khaled Essalah
- Unité de Recherche en Sciences Fondamentales et Didactique, Equipe de Chimie Théorique et Réactivité (UR14ES10); Institut Préparatoire aux Etudes d'Ingénieurs d'El Manar IPEIM, Université Tunis El Manar; Tunis Tunisia
| | - Manef Abderrabba
- Laboratoire Matériaux, Molécules et applications; Institut Préparatoire aux Etudes Scientifiques et Techniques; BP La Marsa Tunisia
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16
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Oliveira EF, Shi J, Lavarda FC, Lüer L, Milián-Medina B, Gierschner J. Excited state absorption spectra of dissolved and aggregated distyrylbenzene: A TD-DFT state and vibronic analysis. J Chem Phys 2017; 147:034903. [DOI: 10.1063/1.4993216] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Eliezer Fernando Oliveira
- UNESP–Universidade Estadual Paulista, POSMAT–Graduate Program in Material Science and Technology, Av. Eng. Luiz Edmundo Carrijo Coube 14-01, 17033-360 Bauru, SP, Brazil
| | - Junqing Shi
- Institute for Advanced Studies, IMDEA Nanoscience, C/ Faraday 9, Campus Cantoblanco, 28049 Madrid, Spain
| | - Francisco Carlos Lavarda
- UNESP–Universidade Estadual Paulista, POSMAT–Graduate Program in Material Science and Technology, Av. Eng. Luiz Edmundo Carrijo Coube 14-01, 17033-360 Bauru, SP, Brazil
- DF-FC, UNESP–Universidade Estadual Paulista, Av. Eng. Luiz Edmundo Carrijo Coube 14-01, 17033-360 Bauru, SP, Brazil
| | - Larry Lüer
- Institute for Advanced Studies, IMDEA Nanoscience, C/ Faraday 9, Campus Cantoblanco, 28049 Madrid, Spain
| | - Begoña Milián-Medina
- Institute for Advanced Studies, IMDEA Nanoscience, C/ Faraday 9, Campus Cantoblanco, 28049 Madrid, Spain
- Department for Physical Chemistry, Faculty of Chemistry, University of Valencia, Avenida Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - Johannes Gierschner
- Institute for Advanced Studies, IMDEA Nanoscience, C/ Faraday 9, Campus Cantoblanco, 28049 Madrid, Spain
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17
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Roseli RB, Tapping PC, Kee TW. Origin of the Excited-State Absorption Spectrum of Polythiophene. J Phys Chem Lett 2017; 8:2806-2811. [PMID: 28590132 DOI: 10.1021/acs.jpclett.7b01053] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The excited states of conjugated polymers play a central role in their applications in organic solar photovoltaics. The delocalized excited states of conjugated polymers are short-lived (τ < 40 fs) but are imperative in the photovoltaic properties of these materials. Photoexcitation of poly(3-hexylthiophene) (P3HT) induces an excited-state absorption band, but the transitions that are involved are not well understood. In this work, calculations have been performed on P3HT analogues using nonlinear response time-dependent density functional theory to show that an increase in the oligomer length correlates with the dominance of the S1 → S3 transition. Furthermore, the predicted transition energy shows an excellent agreement with experiment. The calculations also yielded results on intramolecular charge transfer in P3HT due to the S1 → S3 transition, providing insight into the mechanism of exciton dissociation to form charge carriers.
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Affiliation(s)
- Ras Baizureen Roseli
- Department of Chemistry, The University of Adelaide , Adelaide, South Australia 5005, Australia
| | - Patrick C Tapping
- Department of Chemistry, The University of Adelaide , Adelaide, South Australia 5005, Australia
| | - Tak W Kee
- Department of Chemistry, The University of Adelaide , Adelaide, South Australia 5005, Australia
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18
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Fradon A, Cloutet E, Hadziioannou G, Brochon C, Castet F. Optical properties of donor–acceptor conjugated copolymers: A computational study. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.04.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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20
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Modifying electronic properties of ICBA through chemical substitutions for solar cell applications. Struct Chem 2017. [DOI: 10.1007/s11224-017-0916-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Oliveira EF, Lavarda FC. Reorganization energy for hole and electron transfer of poly(3-hexylthiophene) derivatives. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.07.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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