1
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Topolskaia V, Pollit AA, Cheng S, Seferos DS. Trends in Conjugated Chalcogenophenes: A Theoretical Study. Chemistry 2021; 27:9038-9043. [PMID: 34000075 DOI: 10.1002/chem.202100270] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Indexed: 11/08/2022]
Abstract
Heavy atom substitution in chalcogenophenes is a versatile strategy for tailoring and ultimately improving conjugated polymer properties. While thiophene monomers are commonly implemented in polymer designs, relatively little is known regarding the molecular properties of the heavier chalcogenophenes. Herein, we use density functional theory (DFT) calculations to examine how group 16 heteroatoms, including the radioactive polonium, affect polychalcogenophene properties including bond length, chain twisting, aromaticity, and optical properties. Heavier chalcogenophenes are more quinoidal in character and consequently have reduced band gaps and larger degrees of planarity. We consider both the neutral and radical cationic species. Upon p-type doping, bond length rearrangement is indicative of a more delocalized electronic structure, which combined with optical calculations is consistent with the polaron-model of charge storage on conjugated polymer chains. A better understanding of the properties of these materials at their molecular levels will inevitably be useful in material design as the polymer community continues to explore more main group containing polymers to tackle issues in electronic devices.
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Affiliation(s)
- Valentina Topolskaia
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Adam A Pollit
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Susan Cheng
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Dwight S Seferos
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada.,Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, Ontario, M5S 3E5, Canada
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2
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Sahalianov I, Hynynen J, Barlow S, Marder SR, Müller C, Zozoulenko I. UV-to-IR Absorption of Molecularly p-Doped Polythiophenes with Alkyl and Oligoether Side Chains: Experiment and Interpretation Based on Density Functional Theory. J Phys Chem B 2020; 124:11280-11293. [PMID: 33237790 PMCID: PMC7872427 DOI: 10.1021/acs.jpcb.0c08757] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/04/2020] [Indexed: 11/28/2022]
Abstract
The UV-to-IR transitions in p-doped poly(3-hexylthiophene) (P3HT) with alkyl side chains and polar polythiophene with tetraethylene glycol side chains are studied experimentally by means of the absorption spectroscopy and computationally using density functional theory (DFT) and tight-binding DFT. The evolution of electronic structure is calculated as the doping level is varied, while the roles of dopant ions, chain twisting, and π-π stacking are also considered, each of these having the effect of broadening the absorption peaks while not significantly changing their positions. The calculated spectra are found to be in good agreement with experimental spectra obtained for the polymers doped with a molybdenum dithiolene complex. As in other DFT studies of doped conjugated polymers, the electronic structure and assignment of optical transitions that emerge are qualitatively different from those obtained through earlier "traditional" approaches. In particular, the two prominent bands seen for the p-doped materials are present for both polarons and bipolarons/polaron pairs. The lowest energy of these transitions is due to excitation from the valence band to a spin-resolved orbitals located in the gap between the bands. The higher-energy band is a superposition of excitation from the valence band to a spin-resolved orbitals in the gap and an excitation between bands.
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Affiliation(s)
- Ihor Sahalianov
- Laboratory
of Organic Electronics, Department of Science and Technology, Linköping University, 60174 Norrköping, Sweden
| | - Jonna Hynynen
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, 41296 Göteborg, Sweden
| | - Stephen Barlow
- School
of Chemistry and Biochemistry and Center for Organic Photonics and
Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Seth R. Marder
- School
of Chemistry and Biochemistry and Center for Organic Photonics and
Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Christian Müller
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, 41296 Göteborg, Sweden
| | - Igor Zozoulenko
- Laboratory
of Organic Electronics, Department of Science and Technology, Linköping University, 60174 Norrköping, Sweden
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3
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Zhang Y, Zhang K, Ma Y, Lin L, Wang CK, Fan J. Tunable lifetimes and efficiencies of room temperature phosphorescent liquids by modulating the length and number of alkyl chains. Phys Chem Chem Phys 2020; 22:19746-19757. [PMID: 32842141 DOI: 10.1039/d0cp03401k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Organic room temperature phosphorescence (RTP) liquid composites exhibit the potential to make innovative changes in large area flexible lighting applications, and it is extremely challenging to achieve high-efficiency RTP in pure organic solvent-free liquid systems. The excited state properties and inner lighting mechanisms of these composites are unclear; therefore, a theoretical perspective to design high efficiency RTP liquids with tunable lifetime is highly desired. Herein, we systematically investigate the photophysical properties of a series of long swallow-tailed bromonaphthalimide (BT unit) molecules by the newly proposed optimally tuned range-separated (RS) functional method, and a state-of-the-art RTP molecule with an absolute quantum yield (ΦRTP) of 57.1% and a lifetime (τ) of 160 ms in solvent-free liquid is obtained. Moreover, theoretical results show that the energy gap between the lowest singlet excited state (S1) and triplet excited state (T1) can be reduced and the non-radiative energy consumption process can be restricted by modulating the length and number of alkyl chains in organic RTP molecules. Thus, a wise molecular design strategy is proposed and five additional efficient RTP molecules with tunable lifetimes (43, 19, 136, 0.11 and 0.005 ms) and efficiencies (11.3%, 6.8%, 5.9%, 0.2% and 0.05%) are theoretically proposed. This study sheds light on the relationship among molecular structure, lifetime and efficiency, and can provide an important prototype to explore high-efficiency RTP by pure organic solvent-free liquid systems.
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Affiliation(s)
- Yuchen Zhang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, 250014 Jinan, China.
| | - Kai Zhang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, 250014 Jinan, China.
| | - Yuying Ma
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, 250014 Jinan, China.
| | - Lili Lin
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, 250014 Jinan, China.
| | - Chuan-Kui Wang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, 250014 Jinan, China.
| | - Jianzhong Fan
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, 250014 Jinan, China. and Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates (South China University of Technology), Guangzhou 510640, China
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4
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Liu JT, Hase H, Taylor S, Salzmann I, Forgione P. Approaching the Integer‐Charge Transfer Regime in Molecularly Doped Oligothiophenes by Efficient Decarboxylative Cross‐Coupling. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jiang Tian Liu
- Department of Chemistry and Biochemistry Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
| | - Hannes Hase
- Department of Physics Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
| | - Sarah Taylor
- Department of Chemistry and Biochemistry Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
| | - Ingo Salzmann
- Department of Chemistry and Biochemistry Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
- Department of Physics Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
- Centre for Research in Molecular Modeling (CERMM) Centre for NanoScience Research (CeNSR) Concordia University 7141 rue Sherbrooke O. Montreal QC H4B 1R6 Canada
| | - Pat Forgione
- Department of Chemistry and Biochemistry Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
- Center for Green Chemistry and Catalysis McGill University 801 rue Sherbrooke O. Montréal QC H3A 0B8 Canada
- Centre for Research in Molecular Modeling (CERMM) Centre for NanoScience Research (CeNSR) Concordia University 7141 rue Sherbrooke O. Montreal QC H4B 1R6 Canada
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5
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Liu JT, Hase H, Taylor S, Salzmann I, Forgione P. Approaching the Integer-Charge Transfer Regime in Molecularly Doped Oligothiophenes by Efficient Decarboxylative Cross-Coupling. Angew Chem Int Ed Engl 2020; 59:7146-7153. [PMID: 31961982 DOI: 10.1002/anie.201914458] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Indexed: 01/08/2023]
Abstract
A library of symmetrical linear oligothiophene was prepared employing decarboxylative cross-coupling reaction as the key transformation. Thiophene potassium carboxylate salts were used as cross-coupling partners without the need of co-catalyst, base, or additives. This method demonstrates complete chemoselectivity and is a comprehensive greener approach compared to the existing methods. The modularity of this approach is demonstrated with the preparation of discreet oligothiophenes with up to 10 thiophene repeat units. Symmetrical oligothiophenes are prototypical organic semiconductors where their molecular electrical doping as a function of the chain length can be assessed spectroscopically. An oligothiophene critical length for integer charge transfer was observed to be 10 thiophene units, highlighting the potential use of discrete oligothiophenes as doped conduction or injection layers in organic electronics applications.
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Affiliation(s)
- Jiang Tian Liu
- Department of Chemistry and Biochemistry, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada
| | - Hannes Hase
- Department of Physics, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada
| | - Sarah Taylor
- Department of Chemistry and Biochemistry, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada
| | - Ingo Salzmann
- Department of Chemistry and Biochemistry, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada.,Department of Physics, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada.,Centre for Research in Molecular Modeling (CERMM), Centre for NanoScience Research (CeNSR), Concordia University, 7141 rue Sherbrooke O., Montreal, QC, H4B 1R6, Canada
| | - Pat Forgione
- Department of Chemistry and Biochemistry, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada.,Center for Green Chemistry and Catalysis, McGill University, 801 rue Sherbrooke O., Montréal, QC, H3A 0B8, Canada.,Centre for Research in Molecular Modeling (CERMM), Centre for NanoScience Research (CeNSR), Concordia University, 7141 rue Sherbrooke O., Montreal, QC, H4B 1R6, Canada
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6
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Casanovas J, Zanuy D, Alemán C. Distribution of dopant ions around poly(3,4-ethylenedioxythiophene) chains: a theoretical study. Phys Chem Chem Phys 2017; 19:9889-9899. [DOI: 10.1039/c7cp00857k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of counterions and multiple polymer chains on the properties and structure of poly(3,4-ethylenedioxythiophene) (PEDOT) doped with ClO4− has been examined using density functional theory (DFT) calculations with periodic boundary conditions (PBCs).
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Affiliation(s)
- Jordi Casanovas
- Departament de Química
- Escola Politècnica Superior
- Universitat de Lleida
- Lleida E-25001
- Spain
| | - David Zanuy
- Departament d'Enginyeria Química
- EEBE
- Universitat Politècnica de Catalunya
- Sant Adriá del Besòs
- Spain
| | - Carlos Alemán
- Departament d'Enginyeria Química
- EEBE
- Universitat Politècnica de Catalunya
- Sant Adriá del Besòs
- Spain
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7
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Padula D, Santoro F, Pescitelli G. A simple dimeric model accounts for the vibronic ECD spectra of chiral polythiophenes in their aggregated states. RSC Adv 2016. [DOI: 10.1039/c6ra05500a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aggregates of chiral polythiophenes (PTs) show exciton-coupled electronic circular dichroism (ECD) spectra with a unique vibronic structure, which can be reproduced by quantum dynamical simulations on the coupled states of small dimeric models.
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Affiliation(s)
- Daniele Padula
- Università di Pisa
- Dipartimento di Chimica e Chimica Industriale Via G. Moruzzi 13
- I-56124 Pisa
- Italy
| | - Fabrizio Santoro
- Consiglio Nazionale delle Ricerche – CNR
- Istituto di Chimica dei Composti Organo Metallici (ICCOM-CNR)
- UOS di Pisa
- I-56124 Pisa
- Italy
| | - Gennaro Pescitelli
- Università di Pisa
- Dipartimento di Chimica e Chimica Industriale Via G. Moruzzi 13
- I-56124 Pisa
- Italy
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8
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9
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Structural and electronic properties of doped oligothiophenes in the presence of p-toluenesulfonate acids. Theor Chem Acc 2015. [DOI: 10.1007/s00214-015-1663-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Fazzi D, Barbatti M, Thiel W. Modeling ultrafast exciton deactivation in oligothiophenes via nonadiabatic dynamics. Phys Chem Chem Phys 2015; 17:7787-99. [DOI: 10.1039/c5cp00019j] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nonadiabatic excited-state dynamics reveal the exciton relaxation processes in oligothiophenes. Ultrafast deactivation and exciton localization are predicted to occur within 200 fs, involving bond stretching, ring puckering, and torsional oscillations.
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Affiliation(s)
- Daniele Fazzi
- Max-Planck-Institut für Kohlenforschung
- D-45470 Mülheim an der Ruhr
- Germany
| | - Mario Barbatti
- Max-Planck-Institut für Kohlenforschung
- D-45470 Mülheim an der Ruhr
- Germany
| | - Walter Thiel
- Max-Planck-Institut für Kohlenforschung
- D-45470 Mülheim an der Ruhr
- Germany
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11
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Affiliation(s)
- David Aradilla
- Departament d'Enginyeria Química, ETSEIB; Universitat Politècnica de Catalunya; Avda. Diagonal 647 Barcelona E-08028 Spain
- Center for Research in Nano-Engineering; Universitat Politècnica de Catalunya; Campus Sud, Edifici C’, C/Pasqual i Vila s/n Barcelona E-08028 Spain
| | - Carlos Aleman
- Departament d'Enginyeria Química, ETSEIB; Universitat Politècnica de Catalunya; Avda. Diagonal 647 Barcelona E-08028 Spain
- Center for Research in Nano-Engineering; Universitat Politècnica de Catalunya; Campus Sud, Edifici C’, C/Pasqual i Vila s/n Barcelona E-08028 Spain
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12
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Salzner U. Electronic structure of conducting organic polymers: insights from time-dependent density functional theory. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2014. [DOI: 10.1002/wcms.1194] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ulrike Salzner
- Department of Chemistry; Bilkent University; Ankara Turkey
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13
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Sun H, Autschbach J. Electronic Energy Gaps for π-Conjugated Oligomers and Polymers Calculated with Density Functional Theory. J Chem Theory Comput 2014; 10:1035-47. [DOI: 10.1021/ct4009975] [Citation(s) in RCA: 120] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Haitao Sun
- Department
of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260-3000, United States
- Shanghai
Key Laboratory of Advanced Polymeric Materials, Key Laboratory for
Ultrafine Materials of Ministry of Education, School of Materials
Science and Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jochen Autschbach
- Department
of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260-3000, United States
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14
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Shao N, Wu Q. Charge self-localization in π-conjugated polymers by long range corrected hybrid functionals. Phys Chem Chem Phys 2014; 16:6700-8. [DOI: 10.1039/c3cp54515f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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15
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Sharma S, Bendikov M. α-Oligofurans: A Computational Study. Chemistry 2013; 19:13127-39. [DOI: 10.1002/chem.201300257] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 04/26/2013] [Indexed: 12/24/2022]
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16
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Torras J, Casanovas J, Alemán C. Reviewing Extrapolation Procedures of the Electronic Properties on the π-Conjugated Polymer Limit. J Phys Chem A 2012; 116:7571-83. [DOI: 10.1021/jp303584b] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Juan Torras
- Departament d’Enginyeria
Química, Escola d’Enginyeria d’Igualada, Universitat Politècnica de Catalunya, Pça
Rei 15, Igualada 08700, Spain
| | - Jordi Casanovas
- Departament de Química,
Escola Politècnica Superior, Universitat de Lleida, c/Jaume II no. 69, Lleida E-25001, Spain
| | - Carlos Alemán
- Departament d’Enginyeria
Química, E. T. S. d’Enginyeria Industrial de Barcelona, Universitat Politècnica de Catalunya, Diagonal
647, Barcelona E-08028, Spain
- Centre for Research in Nano-Engineering, Universitat Politècnica de Catalunya, Campus
Sud, Edifici C’, C/Pasqual i Vila s/n, Barcelona E-08028, Spain
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17
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Aschi M, Amadei A, Pellegrino A, Perin N, Po’ R. Thermal and environmental effects on Oligothiophene low-energy singlet electronic excitations in dilute solution: a theoretical and experimental study. Theor Chem Acc 2012. [DOI: 10.1007/s00214-012-1177-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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18
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Ledwon P, Kuznik W, Lapkowski M, Majchrzak M. Spectral, electrochemical and structural study of aryl derivatives of trans-stilbenes. NEW J CHEM 2012. [DOI: 10.1039/c2nj40531h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Jiang Y, Peng Q, Gao X, Shuai Z, Niu Y, Lin SH. Theoretical design of polythienylenevinylene derivatives for improvements of light-emitting and photovoltaic performances. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm14956c] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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González SR, Aragó J, Viruela PM, Ortí E, López Navarrete JT, Sato MA, Casado J. Diferrocenyl oligothiophene wires: Raman and quantum chemical study of valence-trapped cations. J Chem Phys 2011; 135:234705. [DOI: 10.1063/1.3669653] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Alemán C, Torras J, Casanovas J. Influence of polarity of the medium in the saturation of the electronic properties for π-conjugated oligothiophenes. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.06.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Salzner U, Aydin A. Improved Prediction of Properties of π-Conjugated Oligomers with Range-Separated Hybrid Density Functionals. J Chem Theory Comput 2011; 7:2568-83. [DOI: 10.1021/ct2003447] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ulrike Salzner
- Department of Chemistry, Bilkent University, 06800 Bilkent, Ankara, Turkey
| | - Aykut Aydin
- Department of Chemistry, Bilkent University, 06800 Bilkent, Ankara, Turkey
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23
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Salzner U. Modeling Photoelectron Spectra of Conjugated Oligomers with Time-Dependent Density Functional Theory. J Phys Chem A 2010; 114:10997-1007. [DOI: 10.1021/jp105588n] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ulrike Salzner
- Department of Chemistry, Bilkent University, 06800 Bilkent, Ankara, Turkey.
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24
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Chen W, Güler G, Kuruvilla E, Schuster GB, Chiu HC, Riedo E. Development of Self-Organizing, Self-Directing Molecular Nanowires: Synthesis and Characterization of Conjoined DNA−2,5-Bis(2-thienyl)pyrrole Oligomers. Macromolecules 2010. [DOI: 10.1021/ma100409u] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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25
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Salzner U. Effects of Perfluorination on Thiophene and Pyrrole Oligomers. J Phys Chem A 2010; 114:5397-405. [DOI: 10.1021/jp1005633] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ulrike Salzner
- Department of Chemistry, Bilkent University, 06800 Bilkent, Ankara, Turkey
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26
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Aragó J, Viruela P, Ortí E, Malavé Osuna R, Vercelli B, Zotti G, Hernández V, López Navarrete J, Henssler J, Matzger A, Suzuki Y, Yamaguchi S. Neutral and Oxidized Triisopropylsilyl End-Capped Oligothienoacenes: A Combined Electrochemical, Spectroscopic, and Theoretical Study. Chemistry 2010; 16:5481-91. [DOI: 10.1002/chem.200903343] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Affiliation(s)
- Roi Baer
- Fritz Haber Center for Molecular Dynamics, Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904 Israel;
| | - Ester Livshits
- Fritz Haber Center for Molecular Dynamics, Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904 Israel;
| | - Ulrike Salzner
- Department of Chemistry, Bilkent University, 06800 Bilkent, Ankara, Turkey
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28
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Abstract
Recently, a family of conducting polyselenophenes was synthesized, and they were shown to have a number of interesting properties. Here we have studied oligoselenophenes, their cation radicals and dications up to the 50-mer (50 Se), as well as polyselenophene at the B3LYP/6-31G(d) level of theory, and compared them with the corresponding oligothiophenes. Although the calculations reveal many similarities between oligo- and polyselenophenes and their thiophene-based counterparts, they also show the important differences between those two types of conjugated systems. Oligo- and polyselenophenes have a more quinoid character, lower band gap, and importantly, they are more difficult to twist. The theoretical results suggest that the HOMO-LUMO gap (band gap), bond-length alternation (BLA), and charge distribution in oligo- and polyselenophenes are strongly dependent on inter-ring twisting, yet twisting costs little energy. The inter-ring distances in oligo- and polyselenophenes are shorter than the related distances in oligothiophenes, whereas the bond lengths within the selenophene rings are comparable to those of the corresponding oligothiophenes.
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Affiliation(s)
- Sanjio S Zade
- School of Chemistry, Indian Institute of Science Education and Research, Kolkata, India
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29
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Hu B, Zhang J. Theoretical investigation on the white-light emission from a single-polymer system with simultaneous blue and orange emission. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.10.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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Rode MF, Sobolewski AL, Dedonder C, Jouvet C, Dopfer O. Computational study on the photophysics of protonated benzene. J Phys Chem A 2009; 113:5865-73. [PMID: 19402615 DOI: 10.1021/jp902729m] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The reaction paths in the lowest excited electronic states relevant for the photophysics of protonated benzene, C(6)H(7)(+), have been explored by ab initio techniques of electronic structure theory. For this purpose, the first four excited singlet electronic states of C(6)H(7)(+) have been calculated at the CC2/cc-pVTZ level of theory. The CC2 approach has been validated by CASPT2 and TD-DFT calculations. The calculated UV absorption spectrum is in good agreement with the experimental spectrum. It has been found that the out-of-plane and the in-plane ring deformation leads in the excited states in an essential barrierless manner to a low-lying conical intersection between the lowest excited states and with the ground state, providing a mechanism for efficient radiationless deactivation, which is expected to quench luminescence of the isolated molecular ion.
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Affiliation(s)
- Michal F Rode
- Institute of Physics, Polish Academy of Sciences, PL-02668 Warsaw, Poland
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31
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Gus'kova OA, Khalatur PG, Khokhlov AR. Self-Assembled Polythiophene-Based Nanostructures: Numerical Studies. MACROMOL THEOR SIMUL 2009. [DOI: 10.1002/mats.200800090] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Patra A, Wijsboom YH, Leitus G, Bendikov M. Synthesis, Structure, and Electropolymerization of 3,4-Dimethoxytellurophene: Comparison with Selenium Analogue. Org Lett 2009; 11:1487-90. [DOI: 10.1021/ol9000608] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Asit Patra
- Department of Organic Chemistry and Chemical Research Support Unit, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Yair H. Wijsboom
- Department of Organic Chemistry and Chemical Research Support Unit, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Gregory Leitus
- Department of Organic Chemistry and Chemical Research Support Unit, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Michael Bendikov
- Department of Organic Chemistry and Chemical Research Support Unit, Weizmann Institute of Science, Rehovot 76100, Israel
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33
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Andrzejak M, Pawlikowski MT. Vibronic Effects in the 11Bu(11B2) Excited Singlet States of Oligothiophenes. Fluorescence Study of the 11Ag(11A1) ← 11Bu(11B2) Transition in Terms of DFT, TDDFT, and CASSCF Methods. J Phys Chem A 2008; 112:13737-44. [DOI: 10.1021/jp807752k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marcin Andrzejak
- Department of Theoretical Chemistry, Faculty of Chemistry, Jagiellonian University, 30-060 Kraków, Ingardena 3, Poland
| | - Marek T. Pawlikowski
- Department of Theoretical Chemistry, Faculty of Chemistry, Jagiellonian University, 30-060 Kraków, Ingardena 3, Poland
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34
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Bayse CA, Brewster TP, Pike RD. Photoluminescence of 1-D Copper(I) Cyanide Chains: A Theoretical Description. Inorg Chem 2008; 48:174-82. [DOI: 10.1021/ic801509t] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Craig A. Bayse
- Department of Chemistry and Biochemistry, Old Dominion University, Hampton Boulevard, Norfolk, Virginia 23529, and Department of Chemistry, College of William and Mary, Williamsburg, Virginia 23187
| | - Timothy P. Brewster
- Department of Chemistry and Biochemistry, Old Dominion University, Hampton Boulevard, Norfolk, Virginia 23529, and Department of Chemistry, College of William and Mary, Williamsburg, Virginia 23187
| | - Robert D. Pike
- Department of Chemistry and Biochemistry, Old Dominion University, Hampton Boulevard, Norfolk, Virginia 23529, and Department of Chemistry, College of William and Mary, Williamsburg, Virginia 23187
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35
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Okur S, Salzner U. Theoretical Modeling of the Doping Process in Polypyrrole by Calculating UV/Vis Absorption Spectra of Neutral and Charged Oligomers. J Phys Chem A 2008; 112:11842-53. [DOI: 10.1021/jp8063257] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Serife Okur
- Department of Chemistry, Bilkent University, Bilkent, 06800 Ankara, Turkey
| | - Ulrike Salzner
- Department of Chemistry, Bilkent University, Bilkent, 06800 Ankara, Turkey
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36
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Alkan F, Salzner U. Theoretical Investigation of Excited States of Oligothiophene Anions. J Phys Chem A 2008; 112:6053-8. [DOI: 10.1021/jp711135e] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fahri Alkan
- Department of Chemistry, Bilkent University, 06800 Bilkent, Ankara, Turkey
| | - Ulrike Salzner
- Department of Chemistry, Bilkent University, 06800 Bilkent, Ankara, Turkey
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37
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Salzner U. Investigation of Charge Carriers in Doped Thiophene Oligomers through Theoretical Modeling of their UV/Vis Spectra. J Phys Chem A 2008; 112:5458-66. [DOI: 10.1021/jp800606m] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ulrike Salzner
- Bilkent University, Department of Chemistry, 06800 Bilkent, Ankara, Turkey
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38
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Sancho-García JC, Pérez-Jiménez AJ. Performance of multi-configurational calculations for a 1,4-bis(phenylethynyl)benzene derivative conjugated molecule. Phys Chem Chem Phys 2008; 10:2308-15. [DOI: 10.1039/b719080h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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39
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Zhang G, Ma J, Wen J. Interchain impacts on electronic structures of heterocyclic oligomers and polymers containing group 14, 15, and 16 heteroatoms: quantum chemical calculations in combination with molecular dynamics simulations. J Phys Chem B 2007; 111:11670-9. [PMID: 17880130 DOI: 10.1021/jp074784f] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The packing structures and packing effects on excitation energies of oligomers of polyfuran (PFu), polypyrrole (PPy), polycyclopentidene (PCp), polythiophene (PTh), polyphosphole (PPh), and polysilole (PSi) are comparatively studied by employing molecular dynamics (MD) simulations and time-dependent density functional theory (TDDFT) calculations. The dependence of packing structures on the main group of heteroatoms in the five-membered heterocyclic oligomers is exhibited from MD simulations. The planarity of backbones and the population of pi-stacked structures increase with the heteroatoms going from group 14 to group 16; i.e., PCp < PPy < PFu; PSi < PPh < PTh. The polymers with the third row elements, PSi and PPh, tend to have larger chain flexibilities in the packing systems than those with the second row elements, PCp and PPy, respectively. On the basis of the second-order Møller-Plesset perturbation (MP2) and natural bond orbital (NBO) calculations of the pi-stacked pairs, the difference in pi-stack orientations, head-to-tail vs head-to-head, between various packing systems is rationalized by individual interchain bond orbital interactions involved with heteroatoms. The packing systems with higher row elements tend to have narrower band gaps. The band gaps are closely related to the chain torsions driven by interchain interactions. The noticeable chain distortions in the packing systems of PCp, PSi, and PPh lead to the significant increase of band gaps in comparison with those appraised from periodic boundary conditions (PBC) calculations on their planar isolated chains.
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Affiliation(s)
- Guiling Zhang
- School of Chemistry and Chemical Engineering, Institute of Theoretical and Computational Chemistry, Lab of Mesoscopic Materials Science, Nanjing University, Nanjing, PR China
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