1
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Gish MK, Karunasena CD, Carr JM, Kopcha WP, Greenaway AL, Mohapatra AA, Zhang J, Basu A, Brosius V, Pratik SM, Bredas JL, Coropceanu V, Barlow S, Marder SR, Ferguson AJ, Reid OG. The Excited-State Lifetime of Poly(NDI2OD-T2) Is Intrinsically Short. J Phys Chem C Nanomater Interfaces 2024; 128:6392-6400. [PMID: 38655059 PMCID: PMC11033933 DOI: 10.1021/acs.jpcc.4c00653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/08/2024] [Accepted: 03/15/2024] [Indexed: 04/26/2024]
Abstract
Conjugated polymers composed of alternating electron donor and acceptor segments have come to dominate the materials being considered for organic photoelectrodes and solar cells, in large part because of their favorable near-infrared absorption. The prototypical electron-transporting push-pull polymer poly(NDI2OD-T2) (N2200) is one such material. While reasonably efficient organic solar cells can be fabricated with N2200 as the acceptor, it generally fails to contribute as much photocurrent from its absorption bands as the donor with which it is paired. Moreover, transient absorption studies have shown N2200 to have a consistently short excited-state lifetime (∼100 ps) that is dominated by a ground-state recovery. In this paper, we investigate whether these characteristics are intrinsic to the backbone structure of this polymer or if these are extrinsic effects from ubiquitous solution-phase and thin-film aggregates. We compare the solution-phase photophysics of N2200 with those of a pair of model compounds composed of alternating bithiophene (T2) donor and naphthalene diimide (NDI) acceptor units, NDI-T2-NDI and T2-NDI-T2, in a dilute solution. We find that the model compounds have even faster ground-state recovery dynamics (τ = 45, 27 ps) than the polymer (τ = 133 ps), despite remaining molecularly isolated in solution. In these molecules, as in the case of the N2200 polymer, the lowest excited state has a T2 to NDI charge-transfer (CT) character. Electronic-structure calculations indicate that the short lifetime of this state is due to fast nonradiative decay to the ground state (GS) promoted by strong CT-GS electronic coupling and strong electron-vibrational coupling with high-frequency (quantum) normal modes.
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Affiliation(s)
- Melissa K. Gish
- Materials,
Chemical, and Computational Science Directorate, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Chamikara D. Karunasena
- Department
of Chemistry and Biochemistry, The University
of Arizona, Tucson, Arizona 85721-0041, United States
| | - Joshua M. Carr
- Renewable
and Sustainable Energy Institute, University
of Colorado Boulder, Boulder, Colorado 80309, United States
| | - William P. Kopcha
- Materials,
Chemical, and Computational Science Directorate, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Ann L. Greenaway
- Materials,
Chemical, and Computational Science Directorate, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Aiswarya Abhisek Mohapatra
- Renewable
and Sustainable Energy Institute, University
of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Junxiang Zhang
- Renewable
and Sustainable Energy Institute, University
of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Aniruddha Basu
- Renewable
and Sustainable Energy Institute, University
of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Victor Brosius
- Renewable
and Sustainable Energy Institute, University
of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Saied Md Pratik
- Department
of Chemistry and Biochemistry, The University
of Arizona, Tucson, Arizona 85721-0041, United States
| | - Jean-Luc Bredas
- Department
of Chemistry and Biochemistry, The University
of Arizona, Tucson, Arizona 85721-0041, United States
| | - Veaceslav Coropceanu
- Department
of Chemistry and Biochemistry, The University
of Arizona, Tucson, Arizona 85721-0041, United States
| | - Stephen Barlow
- Materials,
Chemical, and Computational Science Directorate, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
- Renewable
and Sustainable Energy Institute, University
of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Seth R. Marder
- Materials,
Chemical, and Computational Science Directorate, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
- Renewable
and Sustainable Energy Institute, University
of Colorado Boulder, Boulder, Colorado 80309, United States
- Department
of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80309, United States
- Department
of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Andrew J. Ferguson
- Materials,
Chemical, and Computational Science Directorate, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Obadiah G. Reid
- Materials,
Chemical, and Computational Science Directorate, National Renewable Energy Laboratory, Golden, Colorado 80401, United States
- Renewable
and Sustainable Energy Institute, University
of Colorado Boulder, Boulder, Colorado 80309, United States
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2
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Connolly BJP, Brosius V, Mertes N, Demidova C, Bilyj JK, Riley MJ, Bernhardt PV. Temperature and Counterion Dependent Spin Crossover in a Hexaamineiron(II) Complex. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Blake J. P. Connolly
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane 4072 Australia
| | - Victor Brosius
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane 4072 Australia
| | - Nicole Mertes
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane 4072 Australia
| | - Caroline Demidova
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane 4072 Australia
| | - Jessica K. Bilyj
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane 4072 Australia
| | - Mark J. Riley
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane 4072 Australia
| | - Paul V. Bernhardt
- School of Chemistry and Molecular Biosciences University of Queensland Brisbane 4072 Australia
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3
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Abstract
The syntheses, properties and application of the air-stable electron acceptors, diindenopyrazines 4 a-g are reported demonstrating the introduction of functional aryl groups in the 6- and 12-positions. The targets are accessible on the hundred milligram to gram scale. The structure of the aryl groups in 4 a-g modulates their solubility, redox potentials and optical properties. The introduction of electron-poor aryl groups to the electron-poor diindenopyrazine backbone reduces the electron affinity to -4 eV, making the compounds attractive as n-semiconductors. A simple organic field-effect transistor of 4 e -without optimization- shows electron transport with a mobility of up to 0.037 cm2 V-1 s-1 .
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Affiliation(s)
- Victor Brosius
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Svenja Weigold
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Nikolai Hippchen
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Jan Freudenberg
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Uwe H F Bunz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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4
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Xie G, Bojanowski NM, Brosius V, Wiesner T, Rominger F, Freudenberg J, Bunz UHF. Stable N,N'-Diarylated Dihydrodiazaacene Radical Cations. Chemistry 2021; 27:1976-1980. [PMID: 33226146 PMCID: PMC7898594 DOI: 10.1002/chem.202004548] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/16/2020] [Indexed: 12/03/2022]
Abstract
Three stable N,N’‐diarylated dihydroazaacene radical cations were prepared by oxidation of neutral N,N’‐diarylated dihydroazaacenes synthesized via palladium‐catalyzed Buchwald‐Hartwig aminations of aryl iodides with N,N’‐dihydroazaacenes. Both neutral as well as oxidized species were investigated via UV‐vis spectroscopy, single crystal analysis, and DFT calculations. All the radical cations are surprisingly stable—their absorption spectra in dichloromethane remain unchanged in ambient conditions for at least 24 hours.
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Affiliation(s)
- Gaozhan Xie
- Organisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - N Maximilian Bojanowski
- Organisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Victor Brosius
- Organisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Thomas Wiesner
- Organisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Jan Freudenberg
- Organisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Uwe H F Bunz
- Organisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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5
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Wollscheid N, Lustres JLP, Brosius V, Motzkus M, Bunz UHF, Buckup T. Diffusion-Controlled Singlet Fission in a Chlorinated Phenazinothiadiazole by Broadband Femtosecond Transient Absorption. J Phys Chem B 2020; 124:10186-10194. [PMID: 33118824 DOI: 10.1021/acs.jpcb.0c05056] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Singlet fission (SF) is a process by which one excited singlet state yields two triplet states upon close interaction with a ground-state chromophore of the same kind. This photoreaction was first observed in solid state and has important implications in organic photovoltaics. Singlet fission was also reported in concentrated solutions, where the need for diffusion of the reaction partners slows the dynamics. This helps to single out reaction stages and to identify the involved species. In this work, ultrafast transient absorption spectroscopy and time-correlated single photon counting are applied to the concentration-dependent (from 10-1 to 102 mM) photodynamics of a tetrachlorinated phenazinothiadiazole in toluene. Time-resolved emission shows a monoexponential decay, which is constant across the emission band. The corresponding decay rate depends linearly on the concentration of the phenazinothiadiazole. Femtosecond transient absorption demonstrates that a concentration-dependent singlet-to-triplet conversion hides behind the emission decay which is diffusion controlled. Contrary to previous reports on SF in pentacenes and tetracenes, no indication of intermediate states has been found. Efficient, direct and barrierless SF is concluded. The strong enhancement of the triplet yield at increasingly higher concentrations of the thiadiazole indicates very efficient singlet fission with a triplet yield up to 189 ± 5%.
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Affiliation(s)
- Nikolaus Wollscheid
- Physikalisch-Chemisches Institut, Ruprecht-Karls Universität, D-69120 Heidelberg, Germany.,Centre for Advanced Materials, Ruprecht-Karls Universität, D-69120 Heidelberg, Germany
| | - Jose Luis Pérez Lustres
- Physikalisch-Chemisches Institut, Ruprecht-Karls Universität, D-69120 Heidelberg, Germany.,Centre for Advanced Materials, Ruprecht-Karls Universität, D-69120 Heidelberg, Germany
| | - Victor Brosius
- Centre for Advanced Materials, Ruprecht-Karls Universität, D-69120 Heidelberg, Germany.,Organisch-Chemisches Institut, Ruprecht-Karls Universität, D-69120 Heidelberg, Germany
| | - Marcus Motzkus
- Physikalisch-Chemisches Institut, Ruprecht-Karls Universität, D-69120 Heidelberg, Germany.,Centre for Advanced Materials, Ruprecht-Karls Universität, D-69120 Heidelberg, Germany
| | - Uwe H F Bunz
- Centre for Advanced Materials, Ruprecht-Karls Universität, D-69120 Heidelberg, Germany.,Organisch-Chemisches Institut, Ruprecht-Karls Universität, D-69120 Heidelberg, Germany
| | - Tiago Buckup
- Physikalisch-Chemisches Institut, Ruprecht-Karls Universität, D-69120 Heidelberg, Germany.,Centre for Advanced Materials, Ruprecht-Karls Universität, D-69120 Heidelberg, Germany
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6
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Abstract
The synthesis of five spiro-linked azaacene dimers is reported and their properties are compared to that of their monomers. Dimerization quenches emission of the longer (≥(hetero)tetracenes) derivatives and furnishes amorphous thin-films, the absorption is not affected. The larger derivatives were tested as acceptors in bulk-heterojunction photovoltaic devices with a maximum power conversion efficiency of up to 1.6 %.
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Affiliation(s)
- Lukas Ahrens
- Organisch Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Julian Butscher
- Centre for Advanced Materials (CAM) and Kirchhoff Institute for PhysicsIm Neuenheimer Feld 225 & 22769120HeidelbergGermany
| | - Victor Brosius
- Organisch Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Frank Rominger
- Organisch Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Jan Freudenberg
- Organisch Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Yana Vaynzof
- Centre for Advanced Materials (CAM) and Kirchhoff Institute for PhysicsIm Neuenheimer Feld 225 & 22769120HeidelbergGermany
| | - Uwe H. F. Bunz
- Organisch Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
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7
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Abstract
A series of quinoidal N,N'-diaryldiaza-N,N'-dihydropentacenes (Quino) was prepared in a two-step reaction, starting from quinacridone. Oxidation of Quino furnishes stable radical cations, isoelectronic to the radical anions of the azaacenes, whereas the dicationic species are isoelectronic to neutral azapentacenes. The spectroscopic properties of the diaryldiazapentacenes and their oxidized mono- and dications are equivalent to that of the dianion of tetraazapentacene (TAP), its radical anion and the neutral TAP.
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Affiliation(s)
- Gaozhan Xie
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Victor Brosius
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Jie Han
- Interdisziplinäres Zentrum für Wissenschaftliches Rechnen and Physikalisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 20569120HeidelbergGermany
| | - Frank Rominger
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Andreas Dreuw
- Interdisziplinäres Zentrum für Wissenschaftliches Rechnen and Physikalisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 20569120HeidelbergGermany
| | - Jan Freudenberg
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
- InnovationLabSpeyerer Str. 469115HeidelbergGermany
| | - Uwe H. F. Bunz
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
- Centre for Advanced MaterialsRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 22569120HeidelbergGermany
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8
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Alagna N, Pérez Lustres JL, Wollscheid N, Luo Q, Han J, Dreuw A, Geyer FL, Brosius V, Bunz UHF, Buckup T, Motzkus M. Singlet Fission in Tetraaza-TIPS-Pentacene Oligomers: From fs Excitation to μs Triplet Decay via the Biexcitonic State. J Phys Chem B 2019; 123:10780-10793. [DOI: 10.1021/acs.jpcb.9b08031] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Nicolò Alagna
- Centre for Advanced Materials, University of Heidelberg, D-69120 Heidelberg, Germany
| | - J. Luis Pérez Lustres
- Centre for Advanced Materials, University of Heidelberg, D-69120 Heidelberg, Germany
| | - Nikolaus Wollscheid
- Centre for Advanced Materials, University of Heidelberg, D-69120 Heidelberg, Germany
| | | | | | - Andreas Dreuw
- Centre for Advanced Materials, University of Heidelberg, D-69120 Heidelberg, Germany
| | | | | | - Uwe H. F. Bunz
- Centre for Advanced Materials, University of Heidelberg, D-69120 Heidelberg, Germany
| | - Tiago Buckup
- Centre for Advanced Materials, University of Heidelberg, D-69120 Heidelberg, Germany
| | - Marcus Motzkus
- Centre for Advanced Materials, University of Heidelberg, D-69120 Heidelberg, Germany
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9
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Affiliation(s)
- Victor Brosius
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Matthias Müller
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Jan Borstelmann
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Jan Freudenberg
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Uwe H. F. Bunz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
- Centre for Advanced Materials, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 225, 69120 Heidelberg, Germany
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10
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Bernhardt PV, Bilyj JK, Brosius V, Chernyshov D, Deeth RJ, Foscato M, Jensen VR, Mertes N, Riley MJ, Törnroos KW. Spin Crossover in a Hexaamineiron(II) Complex: Experimental Confirmation of a Computational Prediction. Chemistry 2018; 24:5082-5085. [PMID: 29315883 PMCID: PMC5988046 DOI: 10.1002/chem.201705439] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Indexed: 11/08/2022]
Abstract
Single crystal structural analysis of [FeII (tame)2 ]Cl2 ⋅MeOH (tame=1,1,1-tris(aminomethyl)ethane) as a function of temperature reveals a smooth crossover between a high temperature high-spin octahedral d6 state and a low temperature low-spin ground state without change of the symmetry of the crystal structure. The temperature at which the high and low spin states are present in equal proportions is T1/2 =140 K. Single crystal, variable-temperature optical spectroscopy of [FeII (tame)2 ]Cl2 ⋅MeOH is consistent with this change in electronic ground state. These experimental results confirm the spin activity predicted for [FeII (tame)2 ]2+ during its de novo artificial evolution design as a spin-crossover complex [Chem. Inf. MODEL 2015, 55, 1844], offering the first experimental validation of a functional transition-metal complex predicted by such in silico molecular design methods. Additional quantum chemical calculations offer, together with the crystal structure analysis, insight into the role of spin-passive structural components. A thermodynamic analysis based on an Ising-like mean field model (Slichter-Drickammer approximation) provides estimates of the enthalpy, entropy and cooperativity of the crossover between the high and low spin states.
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Affiliation(s)
- Paul V. Bernhardt
- School of Chemistry and Molecular BiosciencesUniversity of QueenslandBrisbane4072Australia
| | - Jessica K. Bilyj
- School of Chemistry and Molecular BiosciencesUniversity of QueenslandBrisbane4072Australia
| | - Victor Brosius
- School of Chemistry and Molecular BiosciencesUniversity of QueenslandBrisbane4072Australia
| | - Dmitry Chernyshov
- European Synchrotron Radiation Facility71 Avenue des MartyrsGrenoble38000France
| | - Robert J. Deeth
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
- Present address: Department of ChemistryUniversity of Bath, Claverton DownBathBA2 7AYUK
| | - Marco Foscato
- Department of ChemistryUniversity of BergenAllégaten 415007BergenNorway
| | - Vidar R. Jensen
- Department of ChemistryUniversity of BergenAllégaten 415007BergenNorway
| | - Nicole Mertes
- School of Chemistry and Molecular BiosciencesUniversity of QueenslandBrisbane4072Australia
| | - Mark J. Riley
- School of Chemistry and Molecular BiosciencesUniversity of QueenslandBrisbane4072Australia
| | - Karl W. Törnroos
- Department of ChemistryUniversity of BergenAllégaten 415007BergenNorway
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11
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Geyer FL, Koser S, Bojanowski MN, Ullrich F, Brosius V, Hahn S, Brödner K, Mankel E, Marszalek T, Pisula W, Hinkel F, Bunz UHF. Tetraazapentacene constructs: controlling bulk-morphology through molecular dimensionality. Chem Commun (Camb) 2018; 54:1045-1048. [DOI: 10.1039/c7cc07876e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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
Multi-core TIPSTAP-constructs of different dimensionality were created via “geometrization” of the monomeric, highly crystalline parent using alkyne linkers.
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Affiliation(s)
| | - Silke Koser
- Organisch Chemisches Institut
- 62912 Heidelberg
- Germany
| | | | - Florian Ullrich
- InnovationLab GmbH
- 69115 Heidelberg
- Germany
- Technische Universität Darmstadt
- Materials Science Institute
| | | | | | | | - Eric Mankel
- InnovationLab GmbH
- 69115 Heidelberg
- Germany
- Technische Universität Darmstadt
- Materials Science Institute
| | - Tomasz Marszalek
- InnovationLab GmbH
- 69115 Heidelberg
- Germany
- Max Planck Institute for Polymer Research
- 55128 Mainz
| | - Wojciech Pisula
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
- Department of Molecular Physics, Faculty of Chemistry
- Lodz University of Technology
| | - Felix Hinkel
- Organisch Chemisches Institut
- 62912 Heidelberg
- Germany
- Centre for Advanced Materials
- Heidelberg
| | - Uwe H. F. Bunz
- Organisch Chemisches Institut
- 62912 Heidelberg
- Germany
- Centre for Advanced Materials
- Heidelberg
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12
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Abstract
A dearomatization/aromatization strategy accesses the tetrahedral (crosslike) pentacene tetramer (tetrakis(4-((6,13-bis(TIPS-ethynyl)pentacen-2-yl)ethynyl)phenyl)silane). This molecular caltrop and one of its derivatives form amorphous thin films, demonstrating the impact of the 3D-tetramerization on the bulk morphology of the otherwise crystalline TIPS-pentacene.
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Affiliation(s)
- F L Geyer
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - S Schmid
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - V Brosius
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - N M Bojanowski
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - G Bollmann
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - K Brödner
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - U H F Bunz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany and CAM Ruprecht-Karls-Universität, Im Neuenheimer Feld 225, 69120 Heidelberg, Germany
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13
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Affiliation(s)
- Florian L. Geyer
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - Victor Brosius
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - Uwe H. F. Bunz
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
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14
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