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Purdy M, Walton JR, Fallon KJ, Toolan DTW, Budden P, Zeng W, Corpinot MK, Bučar DK, van Turnhout L, Friend R, Rao A, Bronstein H. Aza-Cibalackrot: Turning on Singlet Fission Through Crystal Engineering. J Am Chem Soc 2023; 145:10712-10720. [PMID: 37133417 DOI: 10.1021/jacs.3c00971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Singlet fission is a photophysical process that provides a pathway for more efficient harvesting of solar energy in photovoltaic devices. The design of singlet fission candidates is non-trivial and requires careful optimization of two key criteria: (1) correct energetic alignment and (2) appropriate intermolecular coupling. Meanwhile, this optimization must not come at the cost of molecular stability or feasibility for device applications. Cibalackrot is a historic and stable organic dye which, although it has been suggested to have ideal energetics, does not undergo singlet fission due to large interchromophore distances, as suggested by single crystal analysis. Thus, while the energetic alignment is satisfactory, the molecule does not have the desired intermolecular coupling. Herein, we improve this characteristic through molecular engineering with the first synthesis of an aza-cibalackrot and show, using ultrafast transient spectroscopy, that singlet fission is successfully "turned on."
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Affiliation(s)
- Michael Purdy
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge CB2 1EW, U.K
| | - Jessica R Walton
- Department of Physics, Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE, U.K
| | - Kealan J Fallon
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge CB2 1EW, U.K
| | - Daniel T W Toolan
- Department of Chemistry, University of Sheffield, Dainton Building, Brook Hill, Sheffield S3 7HF, U.K
| | - Peter Budden
- Department of Physics, Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE, U.K
| | - Weixuan Zeng
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge CB2 1EW, U.K
| | - Merina K Corpinot
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Dejan-Krešimir Bučar
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Lars van Turnhout
- Department of Physics, Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE, U.K
| | - Richard Friend
- Department of Physics, Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE, U.K
| | - Akshay Rao
- Department of Physics, Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE, U.K
| | - Hugo Bronstein
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge CB2 1EW, U.K
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van Turnhout L, Hattori Y, Meng J, Zheng K, Sá J. Direct Observation of a Plasmon-Induced Hot Electron Flow in a Multimetallic Nanostructure. Nano Lett 2020; 20:8220-8228. [PMID: 33095592 PMCID: PMC7662917 DOI: 10.1021/acs.nanolett.0c03344] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Plasmon hot carriers are interesting for photoredox chemical synthesis but their direct utilization is limited by their ultrafast thermalization. Therefore, they are often transferred to suitable accepting materials that expedite their lifetime. Solid-state photocatalysts are technologically more suitable than their molecular counterparts, but their photophysical processes are harder to follow due to the absence of clear optical fingerprints. Herein, the journey of hot electrons in a solid-state multimetallic photocatalyst is revealed by a combination of ultrafast visible and infrared spectroscopy. Dynamics showed that electrons formed upon silver plasmonic excitation reach the gold catalytic site within 700 fs and the electron flow could also be reversed. Gold is the preferred site until saturation of its 5d band occurs. Silver-plasmon hot electrons increased the rate of nitrophenol reduction 16-fold, confirming the preponderant role of hot electrons in the overall catalytic activity and the importance to follow hot carriers' journeys in solid-state photosystems.
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Affiliation(s)
- Lars van Turnhout
- Physical
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
| | - Yocefu Hattori
- Physical
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
| | - Jie Meng
- Department
of Chemistry, Technical University of Denmark, DK-2800 Kongens
Lyngby, Denmark
| | - Kaibo Zheng
- Department
of Chemistry, Technical University of Denmark, DK-2800 Kongens
Lyngby, Denmark
- Chemical
Physics and NanoLund, Lund University, Box 124, 22100 Lund, Sweden
| | - Jacinto Sá
- Physical
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
- Institute
of Physical Chemistry, Polish Academy of
Sciences, 01-224 Warsaw, Poland
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Fiorentino A, Panariti P, van Turnhout L, Spronck M, Klein A, Schmitz S, Rastogi S, Blom B, Romano D. Immobilization of [VCl 3(N-2,6-Me 2C 6H 3)] Complex on Silica Supports: Synthesis and Catalytic Testing for Ethylene Polymerization. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01908] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Antonio Fiorentino
- Maastricht Science Program, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Persi Panariti
- Maastricht Science Program, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Lars van Turnhout
- Maastricht Science Program, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Mitch Spronck
- Aachen Maastricht Institute for Biobased Materials, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
| | - Axel Klein
- Department of Chemistry, University of Cologne, Greinstrasse 6, 50939 Köln, Germany
| | - Simon Schmitz
- Department of Chemistry, University of Cologne, Greinstrasse 6, 50939 Köln, Germany
| | - Sanjay Rastogi
- Aachen Maastricht Institute for Biobased Materials, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
- Department of Biobased Materials, Faculty of Science and Engineering, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
| | - Burgert Blom
- Maastricht Science Program, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Dario Romano
- Aachen Maastricht Institute for Biobased Materials, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
- Department of Biobased Materials, Faculty of Science and Engineering, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
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Verheyen T, van Turnhout L, Vandavasi JK, Isbrandt ES, De Borggraeve WM, Newman SG. Ketone Synthesis by a Nickel-Catalyzed Dehydrogenative Cross-Coupling of Primary Alcohols. J Am Chem Soc 2019; 141:6869-6874. [DOI: 10.1021/jacs.9b03280] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Thomas Verheyen
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario Canada, K1N 6N5
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, 3001 Leuven, Belgium
| | - Lars van Turnhout
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario Canada, K1N 6N5
| | - Jaya Kishore Vandavasi
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario Canada, K1N 6N5
| | - Eric S. Isbrandt
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario Canada, K1N 6N5
| | - Wim M. De Borggraeve
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, 3001 Leuven, Belgium
| | - Stephen G. Newman
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario Canada, K1N 6N5
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