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Hauschildt SJ, Wu Z, Uersfeld D, Schmid P, Götz C, Engel V, Engels B, Müllen K, Basché T. Excitation localization in a trimeric perylenediimide macrocycle: Synthesis, theory, and single molecule spectroscopy. J Chem Phys 2022; 156:044304. [DOI: 10.1063/5.0077676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Simon J. Hauschildt
- Department of Chemistry, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Zehua Wu
- Department of Chemistry, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Daniel Uersfeld
- Department of Chemistry, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Paul Schmid
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg, 97074 Würzburg, Germany
| | - Christian Götz
- Department of Chemistry, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Volker Engel
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg, 97074 Würzburg, Germany
| | - Bernd Engels
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg, 97074 Würzburg, Germany
| | - Klaus Müllen
- Department of Chemistry, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Thomas Basché
- Department of Chemistry, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
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2
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Yang L, Jang SJ. Theoretical investigation of non-Förster exciton transfer mechanisms in perylene diimide donor, phenylene bridge, and terrylene diimide acceptor systems. J Chem Phys 2020; 153:144305. [PMID: 33086841 DOI: 10.1063/5.0023709] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The rates of exciton transfer within dyads of perylene diimide and terrylene diimide connected by oligophenylene bridge units have been shown to deviate significantly from those of Förster's resonance energy transfer theory, according to single molecule spectroscopy experiments. The present work provides a detailed computational and theoretical study investigating the source of such a discrepancy. Electronic spectroscopy data are calculated by time-dependent density functional theory and then compared with experimental results. Electronic couplings between the exciton donor and the acceptor are estimated based on both the transition density cube method and transition dipole approximation. These results confirm that the delocalization of the exciton to the bridge parts contributes to significant enhancement of donor-acceptor electronic coupling. Mechanistic details of exciton transfer are examined by estimating the contributions of the bridge electronic states, vibrational modes of the dyads commonly coupled to both donor and acceptor, inelastic resonance energy transfer mechanism, and dark exciton states. These analyses suggest that the contribution of common vibrational modes serves as the main source of deviation from Förster's spectral overlap expression.
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Affiliation(s)
- Lei Yang
- Center for Molecular Systems and Organic Devices, Key Laboratory for Organic Electronics and Information Displays and Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Seogjoo J Jang
- Department of Chemistry and Biochemistry, Queens College, City University of New York, 65-30 Kissena Boulevard, Queens, New York 11367, USA and PhD Programs in Chemistry and Physics, and Initiative for the Theoretical Sciences, Graduate Center, City University of New York, 365 Fifth Avenue, New York, New York 10016, USA
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3
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Leng X, Jin F, Wei M, Ma H, Feng J, Ma Y. Electronic energy transfer studied by many-body Green’s function theory. J Chem Phys 2019; 150:164107. [DOI: 10.1063/1.5066290] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- Xia Leng
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Fan Jin
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Min Wei
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Huizhong Ma
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Jin Feng
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Yuchen Ma
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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4
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Garbuio L, Lewandowski B, Wilhelm P, Ziegler L, Yulikov M, Wennemers H, Jeschke G. Shape Persistence of Polyproline II Helical Oligoprolines. Chemistry 2015; 21:10747-53. [PMID: 26089127 DOI: 10.1002/chem.201501190] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Indexed: 11/06/2022]
Abstract
Oligoprolines are commonly used as molecular scaffolds. Past studies on the persistence length of their secondary structure, the polyproline II (PPII) helix, and on the fraction of backbone cis amide bonds have provided conflicting results. We resolved this debate by studying a series of spin-labeled proline octadecamers with EPR spectroscopy. Distance distributions between an N-terminal Gd(III) -DOTA (DOTA=1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid) label and a nitroxide label at one of five evenly spaced backbone sites allowed us to discriminate between the flexibility of the PPII helix and the cis amide contributions. An upper limit of 2 % cis amide bonds per residue was found in a 7:3 (v/v) water/glycerol mixture, whereas cis amides were not observed in trifluoroethanol. Extrapolation of Monte Carlo models from the glass transition to ambient temperature predicts a persistence length of ≈3-3.5 nm in both solvents. The method is generally applicable to any type of oligomer for which the persistence length is of interest.
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Affiliation(s)
- Luca Garbuio
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Physical Chemistry, Vladimir Prelog Weg 2, 8093, Zurich (Switzerland)
| | - Bartosz Lewandowski
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Organic Chemistry, Vladimir Prelog Weg 3, 8093, Zurich (Switzerland)
| | - Patrick Wilhelm
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Organic Chemistry, Vladimir Prelog Weg 3, 8093, Zurich (Switzerland)
| | - Ludmila Ziegler
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Organic Chemistry, Vladimir Prelog Weg 3, 8093, Zurich (Switzerland)
| | - Maxim Yulikov
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Physical Chemistry, Vladimir Prelog Weg 2, 8093, Zurich (Switzerland).
| | - Helma Wennemers
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Organic Chemistry, Vladimir Prelog Weg 3, 8093, Zurich (Switzerland).
| | - Gunnar Jeschke
- ETH Zurich, Department of Chemistry and Applied Bioscience, Laboratory of Physical Chemistry, Vladimir Prelog Weg 2, 8093, Zurich (Switzerland).
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5
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Kim HN, Puhl L, Nolde F, Li C, Chen L, Basché T, Müllen K. Energy transfer at the single-molecule level: synthesis of a donor-acceptor dyad from perylene and terrylene diimides. Chemistry 2013; 19:9160-6. [PMID: 23780819 DOI: 10.1002/chem.201300439] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Indexed: 11/08/2022]
Abstract
In 2004, we reported single-pair fluorescence resonance energy transfer (spFRET), based on a perylene diimide (PDI) and terrylene diimide (TDI) dyad (1) that was bridged by a rigid substituted para-terphenyl spacer. Since then, several further single-molecule-level investigations on this specific compound have been performed. Herein, we focus on the synthesis of this dyad and the different approaches that can be employed. An optimized reaction pathway was chosen, considering the solubilities, reactivities, and accessibilities of the building blocks for each individual reaction whilst still using established synthetic techniques, including imidization, Suzuki coupling, and cyclization reactions. The key differentiating consideration in this approach to the synthesis of dyad 1 is the introduction of functional groups in a nonsymmetrical manner onto either the perylene diimide or the terrylene diimide by using imidization reactions. Combined with well-defined purification conditions, this modified approach allows dyad 1 to be obtained in reasonable quantities in good yield.
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Affiliation(s)
- Ha Na Kim
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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6
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Fückel B, Hinze G, Wu J, Müllen K, Basché T. Probing the Electronic State of a Single Coronene Molecule by the Emission from Proximate Fluorophores. Chemphyschem 2012; 13:938-45. [DOI: 10.1002/cphc.201100785] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 12/05/2011] [Indexed: 11/10/2022]
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7
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Türp D, Nguyen TTT, Baumgarten M, Müllen K. Uniquely versatile: nano-site defined materials based on polyphenylene dendrimers. NEW J CHEM 2012. [DOI: 10.1039/c1nj20449a] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Krause S, Kowerko D, Börner R, Hübner CG, von Borczyskowski C. Spectral Diffusion of Single Molecules in a Hierarchical Energy Landscape. Chemphyschem 2011; 12:303-12. [DOI: 10.1002/cphc.201000678] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Revised: 11/08/2010] [Indexed: 11/10/2022]
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9
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Haase M, Hübner CG, Nolde F, Müllen K, Basché T. Photoblinking and photobleaching of rylene diimide dyes. Phys Chem Chem Phys 2011; 13:1776-85. [DOI: 10.1039/c0cp01814g] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Lupton JM. Single-molecule spectroscopy for plastic electronics: materials analysis from the bottom-up. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:1689-721. [PMID: 20496402 DOI: 10.1002/adma.200902306] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
pi-conjugated polymers find a range of applications in electronic devices. These materials are generally highly disordered in terms of chain length and chain conformation, besides being influenced by a variety of chemical and physical defects. Although this characteristic can be of benefit in certain device applications, disorder severely complicates materials analysis. Accurate analytical techniques are, however, crucial to optimising synthetic procedures and assessing overall material purity. Fortunately, single-molecule spectroscopic techniques have emerged as an unlikely but uniquely powerful approach to unraveling intrinsic material properties from the bottom up. Building on the success of such techniques in the life sciences, single-molecule spectroscopy is finding increasing applicability in materials science, effectively enabling the dissection of the bulk down to the level of the individual molecular constituent. This article reviews recent progress in single molecule spectroscopy of conjugated polymers as used in organic electronics.
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Affiliation(s)
- John M Lupton
- Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112, USA.
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11
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Diehl FP, Roos C, Jankowiak HC, Berger R, Köhn A, Diezemann G, Basché T. Combined Experimental and Theoretical Study of the Vibronic Spectra of Perylenecarboximides. J Phys Chem B 2010; 114:1638-47. [DOI: 10.1021/jp909862x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Florian P. Diehl
- Johannes Gutenberg-University, Institute of Physical Chemistry, Jakob-Welder-Weg 11, D-55099 Mainz, Germany, and Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-University, Ruth-Moufang-Str. 1, D-60438 Frankfurt am Main, Germany
| | - Claudia Roos
- Johannes Gutenberg-University, Institute of Physical Chemistry, Jakob-Welder-Weg 11, D-55099 Mainz, Germany, and Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-University, Ruth-Moufang-Str. 1, D-60438 Frankfurt am Main, Germany
| | - Hans-Christian Jankowiak
- Johannes Gutenberg-University, Institute of Physical Chemistry, Jakob-Welder-Weg 11, D-55099 Mainz, Germany, and Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-University, Ruth-Moufang-Str. 1, D-60438 Frankfurt am Main, Germany
| | - Robert Berger
- Johannes Gutenberg-University, Institute of Physical Chemistry, Jakob-Welder-Weg 11, D-55099 Mainz, Germany, and Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-University, Ruth-Moufang-Str. 1, D-60438 Frankfurt am Main, Germany
| | - Andreas Köhn
- Johannes Gutenberg-University, Institute of Physical Chemistry, Jakob-Welder-Weg 11, D-55099 Mainz, Germany, and Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-University, Ruth-Moufang-Str. 1, D-60438 Frankfurt am Main, Germany
| | - Gregor Diezemann
- Johannes Gutenberg-University, Institute of Physical Chemistry, Jakob-Welder-Weg 11, D-55099 Mainz, Germany, and Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-University, Ruth-Moufang-Str. 1, D-60438 Frankfurt am Main, Germany
| | - Thomas Basché
- Johannes Gutenberg-University, Institute of Physical Chemistry, Jakob-Welder-Weg 11, D-55099 Mainz, Germany, and Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-University, Ruth-Moufang-Str. 1, D-60438 Frankfurt am Main, Germany
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12
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Avlasevich Y, Li C, Müllen K. Synthesis and applications of core-enlarged perylene dyes. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/c000137f] [Citation(s) in RCA: 179] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Egbe DAM, Carbonnier B, Birckner E, Grummt UW. Arylene-ethynylene/arylene-vinylene copolymers: Synthesis and structure–property relationships. Prog Polym Sci 2009. [DOI: 10.1016/j.progpolymsci.2009.03.003] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Muñoz-Losa A, Curutchet C, Galván IF, Mennucci B. Quantum mechanical methods applied to excitation energy transfer: A comparative analysis on excitation energies and electronic couplings. J Chem Phys 2008; 129:034104. [DOI: 10.1063/1.2953716] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Becker K, Da Como E, Feldmann J, Scheliga F, Thorn Csányi E, Tretiak S, Lupton JM. How Chromophore Shape Determines the Spectroscopy of Phenylene−Vinylenes: Origin of Spectral Broadening in the Absence of Aggregation. J Phys Chem B 2008; 112:4859-64. [DOI: 10.1021/jp800870p] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. Becker
- Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität, Amalienstr. 54, 80799 München, Germany, Institute for Technical and Macromolecular Chemistry, Universität Hamburg, 20146 Hamburg, Germany, Theoretical Division and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory (LANL), Los Alamos, New Mexico 87545, and Department of Physics, University of Utah, Salt Lake City, Utah 84112
| | - E. Da Como
- Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität, Amalienstr. 54, 80799 München, Germany, Institute for Technical and Macromolecular Chemistry, Universität Hamburg, 20146 Hamburg, Germany, Theoretical Division and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory (LANL), Los Alamos, New Mexico 87545, and Department of Physics, University of Utah, Salt Lake City, Utah 84112
| | - J. Feldmann
- Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität, Amalienstr. 54, 80799 München, Germany, Institute for Technical and Macromolecular Chemistry, Universität Hamburg, 20146 Hamburg, Germany, Theoretical Division and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory (LANL), Los Alamos, New Mexico 87545, and Department of Physics, University of Utah, Salt Lake City, Utah 84112
| | - F. Scheliga
- Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität, Amalienstr. 54, 80799 München, Germany, Institute for Technical and Macromolecular Chemistry, Universität Hamburg, 20146 Hamburg, Germany, Theoretical Division and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory (LANL), Los Alamos, New Mexico 87545, and Department of Physics, University of Utah, Salt Lake City, Utah 84112
| | - E. Thorn Csányi
- Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität, Amalienstr. 54, 80799 München, Germany, Institute for Technical and Macromolecular Chemistry, Universität Hamburg, 20146 Hamburg, Germany, Theoretical Division and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory (LANL), Los Alamos, New Mexico 87545, and Department of Physics, University of Utah, Salt Lake City, Utah 84112
| | - S. Tretiak
- Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität, Amalienstr. 54, 80799 München, Germany, Institute for Technical and Macromolecular Chemistry, Universität Hamburg, 20146 Hamburg, Germany, Theoretical Division and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory (LANL), Los Alamos, New Mexico 87545, and Department of Physics, University of Utah, Salt Lake City, Utah 84112
| | - J. M. Lupton
- Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität, Amalienstr. 54, 80799 München, Germany, Institute for Technical and Macromolecular Chemistry, Universität Hamburg, 20146 Hamburg, Germany, Theoretical Division and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory (LANL), Los Alamos, New Mexico 87545, and Department of Physics, University of Utah, Salt Lake City, Utah 84112
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Hinze G, Métivier R, Nolde F, Müllen K, Basché T. Intramolecular electronic excitation energy transfer in donor∕acceptor dyads studied by time and frequency resolved single molecule spectroscopy. J Chem Phys 2008; 128:124516. [DOI: 10.1063/1.2841474] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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17
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Curutchet C, Mennucci B, Scholes GD, Beljonne D. Does Förster Theory Predict the Rate of Electronic Energy Transfer for a Model Dyad at Low Temperature? J Phys Chem B 2008; 112:3759-66. [DOI: 10.1021/jp7106507] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Carles Curutchet
- Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica e Chimica Fisica, Università di Parma, Parco Area delle Scienze, I-43100 Parma, Italy, Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Risorgimento 35, 56126 Pisa, Italy, Department of Chemistry, 80 St. George Street, Institute for Optical Sciences, and Centre for Quantum Information and Quantum Control, University of Toronto, Toronto, Ontario M5S 3H6 Canada, and Laboratory for Chemistry of Novel Materials,
| | - Benedetta Mennucci
- Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica e Chimica Fisica, Università di Parma, Parco Area delle Scienze, I-43100 Parma, Italy, Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Risorgimento 35, 56126 Pisa, Italy, Department of Chemistry, 80 St. George Street, Institute for Optical Sciences, and Centre for Quantum Information and Quantum Control, University of Toronto, Toronto, Ontario M5S 3H6 Canada, and Laboratory for Chemistry of Novel Materials,
| | - Gregory D. Scholes
- Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica e Chimica Fisica, Università di Parma, Parco Area delle Scienze, I-43100 Parma, Italy, Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Risorgimento 35, 56126 Pisa, Italy, Department of Chemistry, 80 St. George Street, Institute for Optical Sciences, and Centre for Quantum Information and Quantum Control, University of Toronto, Toronto, Ontario M5S 3H6 Canada, and Laboratory for Chemistry of Novel Materials,
| | - David Beljonne
- Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica e Chimica Fisica, Università di Parma, Parco Area delle Scienze, I-43100 Parma, Italy, Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Risorgimento 35, 56126 Pisa, Italy, Department of Chemistry, 80 St. George Street, Institute for Optical Sciences, and Centre for Quantum Information and Quantum Control, University of Toronto, Toronto, Ontario M5S 3H6 Canada, and Laboratory for Chemistry of Novel Materials,
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Fückel B, Köhn A, Harding ME, Diezemann G, Hinze G, Basché T, Gauss J. Theoretical investigation of electronic excitation energy transfer in bichromophoric assemblies. J Chem Phys 2008; 128:074505. [DOI: 10.1063/1.2829531] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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19
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Chen HL, Huang YF, Hsu CP, Lim TS, Kuo LC, Leung MK, Chao TC, Wong KT, Chen SA, Fann W. Direct Measurements of Intersystem Crossing Rates and Triplet Decays of Luminescent Conjugated Oligomers in Solutions. J Phys Chem A 2007; 111:9424-30. [PMID: 17696510 DOI: 10.1021/jp0740651] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Photothermal calorimetry and fluorescence spectroscopy were used to determine the relaxations of the photoexcited singlet state of two PPV and polyfluorene oligomers, (E,E)-1,4-bis[(2-benzyloxy)styryl]benzene (PVDOP) and ter(9,9'-spirobifluorene) (TSBF). The decay rates of different S1 relaxation channels, which include intersystem crossing (ISC), radiative, and nonradiative decay can be determined by the combination of photoacoustic calorimetry (PAC) and the time-correlated single photon counting (TCSPC) technique. The triplet state energy level is determined by the phosphorescence (Ph) spectra recorded at 77 K. The ISC yields are approximately 3% and 6% for PVDOP and TSBF, respectively. The T1 to S0 transition decay rate is acquired by PAC and photothermal beam deflection (PBD) measurements. The triplet state decay rate is 17 and 21 ms(-1) at room temperature. The Ph intensity decay at 77 K shows that the triplet state lifetime increases by 4 orders of magnitude, as compared to room temperature.
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Affiliation(s)
- Hsin-Liang Chen
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
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