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Kim T, Kim J, Ke XS, Brewster JT, Oh J, Sessler JL, Kim D. Magnetic-Field-Induced Modulation of Charge-Recombination Dynamics in a Rosarin-Fullerene Complex. Angew Chem Int Ed Engl 2021; 60:9379-9383. [PMID: 33590640 DOI: 10.1002/anie.202017332] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Indexed: 11/10/2022]
Abstract
Charge-recombination processes are critical for photovoltaic applications and should be suppressed for efficient charge transport. Here, we report that an applied magnetic field (0-1 T) can be used control the charge-recombination dynamics in an expanded rosarin-C60 complex. In the low magnetic field regime (<100 mT), the charge-recombination rate slows down due to hyperfine coupling, as inferred from transient absorption spectroscopic analyses. In contrast, in the high field regime, i.e., over 500 mT, the charge-recombination rate recovers and increases because the Δg mechanism facilitates spin conversion to a triplet charge-separated state (S to T0 ) that undergoes rapid charge-recombination to a localized rosarin triplet state. Therefore, we highlight the charge-recombination rate and the localized triplet state population can be modulated by the magnetic field in charge donor/acceptor non-covalent complexes.
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Affiliation(s)
- Taeyeon Kim
- Department of Chemistry, Spectroscopy Laboratory for Functional π-Electronic Systems, Yonsei University, Seoul, 03722, Republic of Korea.,Department of Chemistry and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois, 60208-3113, United States
| | - Juno Kim
- Department of Chemistry, Spectroscopy Laboratory for Functional π-Electronic Systems, Yonsei University, Seoul, 03722, Republic of Korea
| | - Xian-Sheng Ke
- Department of Chemistry, The University of Texas at Austin, Austin, TX, 78712-1224, USA
| | - James T Brewster
- Department of Chemistry, The University of Texas at Austin, Austin, TX, 78712-1224, USA
| | - Juwon Oh
- Department of Chemistry, Spectroscopy Laboratory for Functional π-Electronic Systems, Yonsei University, Seoul, 03722, Republic of Korea.,Department of Chemistry, Soonchunhyang University, Chungnam, 31538, Republic of Korea
| | - Jonathan L Sessler
- Department of Chemistry, The University of Texas at Austin, Austin, TX, 78712-1224, USA
| | - Dongho Kim
- Department of Chemistry, Spectroscopy Laboratory for Functional π-Electronic Systems, Yonsei University, Seoul, 03722, Republic of Korea
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2
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Kim T, Kim J, Ke X, Brewster JT, Oh J, Sessler JL, Kim D. Magnetic‐Field‐Induced Modulation of Charge‐Recombination Dynamics in a Rosarin‐Fullerene Complex. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Taeyeon Kim
- Department of Chemistry Spectroscopy Laboratory for Functional π-Electronic Systems Yonsei University Seoul 03722 Republic of Korea
- Department of Chemistry and Institute for Sustainability and Energy at Northwestern Northwestern University Evanston, Illinois 60208-3113 United States
| | - Juno Kim
- Department of Chemistry Spectroscopy Laboratory for Functional π-Electronic Systems Yonsei University Seoul 03722 Republic of Korea
| | - Xian‐Sheng Ke
- Department of Chemistry The University of Texas at Austin Austin TX 78712-1224 USA
| | - James T. Brewster
- Department of Chemistry The University of Texas at Austin Austin TX 78712-1224 USA
| | - Juwon Oh
- Department of Chemistry Spectroscopy Laboratory for Functional π-Electronic Systems Yonsei University Seoul 03722 Republic of Korea
- Department of Chemistry Soonchunhyang University Chungnam 31538 Republic of Korea
| | - Jonathan L. Sessler
- Department of Chemistry The University of Texas at Austin Austin TX 78712-1224 USA
| | - Dongho Kim
- Department of Chemistry Spectroscopy Laboratory for Functional π-Electronic Systems Yonsei University Seoul 03722 Republic of Korea
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Jones AL, Gish MK, Zeman CJ, Papanikolas JM, Schanze KS. Photoinduced Electron Transfer in Naphthalene Diimide End-Capped Thiophene Oligomers. J Phys Chem A 2017; 121:9579-9588. [DOI: 10.1021/acs.jpca.7b09095] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Austin L. Jones
- Department
of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Melissa K. Gish
- Department
of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Charles J. Zeman
- Department
of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, Gainesville, Florida 32611-7200, United States
| | - John M. Papanikolas
- Department
of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Kirk S. Schanze
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Way, San Antonio, Texas 78249, United States
- Key
Laboratory of Resource Chemistry, Shanghai Normal University, Shanghai 200234, China
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Ke XS, Kim T, Lynch VM, Kim D, Sessler JL. Flattened Calixarene-like Cyclic BODIPY Array: A New Photosynthetic Antenna Model. J Am Chem Soc 2017; 139:13950-13956. [DOI: 10.1021/jacs.7b08611] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Xian-Sheng Ke
- Department
of Chemistry, The University of Texas at Austin, Austin, Texas 78712-1224, United States
| | - Taeyeon Kim
- Department
of Chemistry, Yonsei University, Seoul 03722, Korea
| | - Vincent M. Lynch
- Department
of Chemistry, The University of Texas at Austin, Austin, Texas 78712-1224, United States
| | - Dongho Kim
- Department
of Chemistry, Yonsei University, Seoul 03722, Korea
| | - Jonathan L. Sessler
- Department
of Chemistry, The University of Texas at Austin, Austin, Texas 78712-1224, United States
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Cekli S, Winkel RW, Schanze KS. Effect of Oligomer Length on Photophysical Properties of Platinum Acetylide Donor–Acceptor–Donor Oligomers. J Phys Chem A 2016; 120:5512-21. [DOI: 10.1021/acs.jpca.6b03977] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Seda Cekli
- Department
of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Russell W. Winkel
- Department
of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Kirk S. Schanze
- Department
of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, Gainesville, Florida 32611-7200, United States
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Cekli S, Winkel RW, Alarousu E, Mohammed OF, Schanze KS. Triplet excited state properties in variable gap π-conjugated donor-acceptor-donor chromophores. Chem Sci 2016; 7:3621-3631. [PMID: 29997854 PMCID: PMC6008705 DOI: 10.1039/c5sc04578a] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 02/12/2016] [Indexed: 11/21/2022] Open
Abstract
A series of variable band-gap donor-acceptor-donor (DAD) chromophores capped with platinum(ii) acetylide units has been synthesized and fully characterized by electrochemical and photophysical methods, with particular emphasis placed on probing triplet excited state properties. A counter-intuitive trend of increasing fluorescence quantum efficiency and lifetime with decreasing excited state energy (optical gap) is observed across the series of DAD chromophores. Careful study of the excited state dynamics, including triplet yields (as inferred from singlet oxygen sensitization), reveals that the underlying origin of the unusual trend in the fluorescence parameters is that the singlet-triplet intersystem crossing rate and yield decrease with decreasing optical gap. It is concluded that the rate of intersystem crossing decreases as the LUMO is increasingly localized on the acceptor unit in the DAD chromophore, and this result is interpreted as arising because the extent of spin-orbit coupling induced by the platinum heavy metal centers decreases as the LUMO is more localized on the acceptor. In addition to the trend in intersystem crossing, the results show that the triplet decay rates follow the Energy Gap Law correlation over a 1.8 eV range of triplet energy and 1000-fold range of triplet decay rates. Finally, femtosecond transient absorption studies for the DAD chromophores reveals a strong absorption in the near-infrared region which is attributed to the singlet excited state. This spectral band appears to be general for DAD chromophores, and may be a signature of the charge transfer (CT) singlet excited state.
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Affiliation(s)
- Seda Cekli
- Department of Chemistry and Center for Macromolecular Science and Engineering , University of Florida , Gainesville , Florida 32611-7200 , USA .
| | - Russell W Winkel
- Department of Chemistry and Center for Macromolecular Science and Engineering , University of Florida , Gainesville , Florida 32611-7200 , USA .
| | - Erkki Alarousu
- Solar and Photovoltaics Engineering Research Center , Division of Physical Sciences and Engineering , King Abdullah University of Science and Technology , Thuwal 23955-6900 , Kingdom of Saudi Arabia
| | - Omar F Mohammed
- Solar and Photovoltaics Engineering Research Center , Division of Physical Sciences and Engineering , King Abdullah University of Science and Technology , Thuwal 23955-6900 , Kingdom of Saudi Arabia
| | - Kirk S Schanze
- Department of Chemistry and Center for Macromolecular Science and Engineering , University of Florida , Gainesville , Florida 32611-7200 , USA .
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Liu L, Eisenbrandt P, Roland T, Polkehn M, Schwartz PO, Bruchlos K, Omiecienski B, Ludwigs S, Leclerc N, Zaborova E, Léonard J, Méry S, Burghardt I, Haacke S. Controlling charge separation and recombination by chemical design in donor–acceptor dyads. Phys Chem Chem Phys 2016; 18:18536-48. [DOI: 10.1039/c6cp00644b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Conjugated donor–acceptor block co-oligomers that self-organize into D–A mesomorphic arrays have raised increasing interest due to their potential applications in organic solar cells.
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Salzner U. Effect of Donor–Acceptor Substitution on Optoelectronic Properties of Conducting Organic Polymers. J Chem Theory Comput 2014; 10:4921-37. [DOI: 10.1021/ct500816c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [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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Li H, Schubert C, Dral PO, Costa RD, La Rosa A, Thüring J, Liu SX, Yi C, Filippone S, Martín N, Decurtins S, Clark T, Guldi DM. Probing charge transfer in benzodifuran-C60 dumbbell-type electron donor-acceptor conjugates: ground- and excited-state assays. Chemphyschem 2013; 14:2910-9. [PMID: 23918655 DOI: 10.1002/cphc.201300378] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Indexed: 11/11/2022]
Abstract
Rigid electron donor-acceptor conjugates (1-3) that combine π-extended benzodifurans as electron donors and C60 molecules as electron acceptors with different linkers have been synthesized and investigated with respect to intramolecular charge-transfer events. Electrochemistry, fluorescence, and transient absorption measurements revealed tunable and structure-dependent charge-transfer processes in the ground and excited states. Our experimental findings are underpinned by density-functional theory calculations.
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Affiliation(s)
- Hui Li
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern (Switzerland), Fax: (+41) 31 631 4399
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Wenzel J, Dreuw A, Burghardt I. Charge and energy transfer in a bithiophene perylenediimide based donor–acceptor–donor system for use in organic photovoltaics. Phys Chem Chem Phys 2013; 15:11704-16. [DOI: 10.1039/c3cp51402a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Roland T, Léonard J, Hernandez Ramirez G, Méry S, Yurchenko O, Ludwigs S, Haacke S. Sub-100 fs charge transfer in a novel donor–acceptor–donor triad organized in a smectic film. Phys Chem Chem Phys 2012; 14:273-9. [DOI: 10.1039/c1cp22122a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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12
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Wang M, Wudl F. Top-down meets bottom-up: organized donor–acceptor heterojunctions for organic solar cells. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33756h] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Badamshina E, Gafurova M. Polymeric nanocomposites containing non-covalently bonded fullerene C60: properties and applications. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15472b] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Karsten BP, Bouwer RKM, Hummelen JC, Williams RM, Janssen RAJ. Charge separation and (triplet) recombination in diketopyrrolopyrrole–fullerene triads. Photochem Photobiol Sci 2010; 9:1055-65. [DOI: 10.1039/c0pp00098a] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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