201
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Lin J, Surin M, Beljonne D, Lou X, van Dongen JLJ, Schenning APHJ. On the mechanism of dynamic polymerization via recycled ss-DNA templated assembly of non-natural bases. Chem Sci 2012. [DOI: 10.1039/c2sc20389h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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202
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Iavicoli P, XU H, Keszthelyi T, Telegdi J, WURST K, Van Averbeke B, Saletra WJ, Minoia A, Beljonne D, Lazzaroni R, De Feyter S, Amabilino DB. Organization of the enantiomeric and racemic forms of an amphiphilic resorcinol derivative at the air-water and graphite-1-phenyloctane interfaces. Chirality 2011; 24:155-66. [DOI: 10.1002/chir.21976] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2011] [Accepted: 09/27/2011] [Indexed: 11/05/2022]
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203
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Hayer A, Van Regemorter T, Höfer B, Mak CSK, Beljonne D, Köhler A. On the formation mechanism for electrically generated exciplexes in a carbazole-pyridine copolymer. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/polb.23011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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204
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Guo Z, De Cat I, Van Averbeke B, Lin J, Wang G, Xu H, Lazzaroni R, Beljonne D, Meijer EW, Schenning APHJ, De Feyter S. Nucleoside-Assisted Self-Assembly of Oligo(p-phenylenevinylene)s at Liquid/Solid Interface: Chirality and Nanostructures. J Am Chem Soc 2011; 133:17764-71. [DOI: 10.1021/ja206437c] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Zongxia Guo
- Division of Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven (K.U. Leuven), Celestijnenlaan 200 F, B-3001 Leuven, Belgium
| | - Inge De Cat
- Division of Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven (K.U. Leuven), Celestijnenlaan 200 F, B-3001 Leuven, Belgium
| | - Bernard Van Averbeke
- Service de Chimie des Matériaux Nouveaux, Université de Mons, Place du Parc 20, 7000 Mons, Belgium
| | - Jianbin Lin
- Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Guojie Wang
- Division of Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven (K.U. Leuven), Celestijnenlaan 200 F, B-3001 Leuven, Belgium
| | - Hong Xu
- Division of Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven (K.U. Leuven), Celestijnenlaan 200 F, B-3001 Leuven, Belgium
| | - Roberto Lazzaroni
- Service de Chimie des Matériaux Nouveaux, Université de Mons, Place du Parc 20, 7000 Mons, Belgium
| | - David Beljonne
- Service de Chimie des Matériaux Nouveaux, Université de Mons, Place du Parc 20, 7000 Mons, Belgium
| | - E. W. Meijer
- Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Albertus P. H. J. Schenning
- Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Steven De Feyter
- Division of Molecular Imaging and Photonics, Department of Chemistry, Katholieke Universiteit Leuven (K.U. Leuven), Celestijnenlaan 200 F, B-3001 Leuven, Belgium
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205
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Sprafke JK, Kondratuk DV, Wykes M, Thompson AL, Hoffmann M, Drevinskas R, Chen WH, Yong CK, Kärnbratt J, Bullock JE, Malfois M, Wasielewski MR, Albinsson B, Herz LM, Zigmantas D, Beljonne D, Anderson HL. Belt-Shaped π-Systems: Relating Geometry to Electronic Structure in a Six-Porphyrin Nanoring. J Am Chem Soc 2011; 133:17262-73. [DOI: 10.1021/ja2045919] [Citation(s) in RCA: 186] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Johannes K. Sprafke
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Dmitry V. Kondratuk
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Michael Wykes
- Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Amber L. Thompson
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Markus Hoffmann
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Rokas Drevinskas
- Department of Chemical Physics, Lund University, SE-22100 Lund, Sweden
| | - Wei-Hsin Chen
- Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - Chaw Keong Yong
- Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - Joakim Kärnbratt
- Department of Chemistry, Chalmers University of Technology, Kemivägen 3, SE-41296 Göteborg, Sweden
| | - Joseph E. Bullock
- Department of Chemistry and Argonne−Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Marc Malfois
- Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom
| | - Michael R. Wasielewski
- Department of Chemistry and Argonne−Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Bo Albinsson
- Department of Chemistry, Chalmers University of Technology, Kemivägen 3, SE-41296 Göteborg, Sweden
| | - Laura M. Herz
- Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - Donatas Zigmantas
- Department of Chemical Physics, Lund University, SE-22100 Lund, Sweden
| | - David Beljonne
- Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Harry L. Anderson
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
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206
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Yin S, Leen V, Jackers C, Beljonne D, Van Averbeke B, Van der Auweraer M, Boens N, Dehaen W. Oligo(p-phenylene ethynylene)-BODIPY Derivatives: Synthesis, Energy Transfer, and Quantum-Chemical Calculations. Chemistry 2011; 17:13247-57. [DOI: 10.1002/chem.201100454] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 07/23/2011] [Indexed: 11/10/2022]
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207
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Diliën H, Marin L, Botek E, Champagne B, Lemaur V, Beljonne D, Lazzaroni R, Cleij TJ, Maes W, Lutsen L, Vanderzande D, Adriaensens PJ. Fingerprints for Structural Defects in Poly(thienylene vinylene) (PTV): A Joint Theoretical–Experimental NMR Study on Model Molecules. J Phys Chem B 2011; 115:12040-50. [DOI: 10.1021/jp206663v] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- H. Diliën
- Institute for Materials Research (IMO) − Chemistry Division, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium
| | - L. Marin
- Institute for Materials Research (IMO) − Chemistry Division, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium
| | - E. Botek
- Laboratoire de Chimie Théorique, Facultés Universitaires Notre-Dame de la Paix (FUNDP), Rue de Bruxelles 61, 5000 Namur, Belgium
| | - B. Champagne
- Laboratoire de Chimie Théorique, Facultés Universitaires Notre-Dame de la Paix (FUNDP), Rue de Bruxelles 61, 5000 Namur, Belgium
| | - V. Lemaur
- Service de Chimie des Matériaux Nouveaux, Université de Mons-UMONS, Place du Parc 20, B-7000 Mons, Belgium
| | - D. Beljonne
- Service de Chimie des Matériaux Nouveaux, Université de Mons-UMONS, Place du Parc 20, B-7000 Mons, Belgium
| | - R. Lazzaroni
- Service de Chimie des Matériaux Nouveaux, Université de Mons-UMONS, Place du Parc 20, B-7000 Mons, Belgium
| | - T. J. Cleij
- Institute for Materials Research (IMO) − Chemistry Division, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium
| | - W. Maes
- Institute for Materials Research (IMO) − Chemistry Division, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium
| | - L. Lutsen
- IMEC, Division IMOMEC, Universitaire Campus, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - D. Vanderzande
- Institute for Materials Research (IMO) − Chemistry Division, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium
- IMEC, Division IMOMEC, Universitaire Campus, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - P. J. Adriaensens
- Institute for Materials Research (IMO) − Chemistry Division, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium
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208
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Wang L, Beljonne D, Chen L, Shi Q. Mixed quantum-classical simulations of charge transport in organic materials: Numerical benchmark of the Su-Schrieffer-Heeger model. J Chem Phys 2011; 134:244116. [DOI: 10.1063/1.3604561] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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209
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Aragó J, Sancho-García JC, Ortí E, Beljonne D. Ab Initio Modeling of Donor–Acceptor Interactions and Charge-Transfer Excitations in Molecular Complexes: The Case of Terthiophene–Tetracyanoquinodimethane. J Chem Theory Comput 2011; 7:2068-77. [DOI: 10.1021/ct200203k] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juan Aragó
- Instituto de Ciencia Molecular, Universidad de Valencia, E-46980 Valencia, Spain
- Laboratory for Chemistry of Novel Materials, Université de Mons, Place du Parc 20, B-7000 Mons, Belgium
| | | | - Enrique Ortí
- Instituto de Ciencia Molecular, Universidad de Valencia, E-46980 Valencia, Spain
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, Université de Mons, Place du Parc 20, B-7000 Mons, Belgium
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210
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Yamagata H, Norton J, Hontz E, Olivier Y, Beljonne D, Brédas JL, Silbey RJ, Spano FC. The nature of singlet excitons in oligoacene molecular crystals. J Chem Phys 2011; 134:204703. [DOI: 10.1063/1.3590871] [Citation(s) in RCA: 212] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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211
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Paquin F, Latini G, Sakowicz M, Karsenti PL, Wang L, Beljonne D, Stingelin N, Silva C. Charge separation in semicrystalline polymeric semiconductors by photoexcitation: is the mechanism intrinsic or extrinsic? Phys Rev Lett 2011; 106:197401. [PMID: 21668198 DOI: 10.1103/physrevlett.106.197401] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Indexed: 05/30/2023]
Abstract
We probe charge photogeneration and subsequent recombination dynamics in neat regioregular poly(3-hexylthiophene) films over six decades in time by means of time-resolved photoluminescence spectroscopy. Exciton dissociation at 10 K occurs extrinsically at interfaces between molecularly ordered and disordered domains. Polaron pairs thus produced recombine by tunneling with distributed rates governed by the distribution of electron-hole radii. Quantum-chemical calculations suggest that hot-exciton dissociation at such interfaces results from a high charge-transfer character.
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Affiliation(s)
- Francis Paquin
- Département de physique and Regroupement québécois sur les matériaux de pointe, Université de Montréal, C.P. 6128, Succursale centre-ville, Montréal (Québec), H3C 3J7, Canada
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212
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Danila I, Riobé F, Piron F, Puigmartí-Luis J, Wallis JD, Linares M, Ågren H, Beljonne D, Amabilino DB, Avarvari N. Hierarchical Chiral Expression from the Nano- to Mesoscale in Synthetic Supramolecular Helical Fibers of a Nonamphiphilic C3-Symmetrical π-Functional Molecule. J Am Chem Soc 2011; 133:8344-53. [DOI: 10.1021/ja202211k] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ion Danila
- Université d'Angers, CNRS, Laboratoire MOLTECH-Anjou, UMR 6200, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
| | - François Riobé
- Université d'Angers, CNRS, Laboratoire MOLTECH-Anjou, UMR 6200, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
- Institut de Ciència de Materials de Barcelona (CSIC), Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès, Catalonia, Spain
| | - Flavia Piron
- Université d'Angers, CNRS, Laboratoire MOLTECH-Anjou, UMR 6200, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
| | - Josep Puigmartí-Luis
- Institut de Ciència de Materials de Barcelona (CSIC), Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès, Catalonia, Spain
| | - John D. Wallis
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, United Kingdom
| | - Mathieu Linares
- Laboratory of Theoretical Chemistry, Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - Hans Ågren
- Laboratory of Theoretical Chemistry, Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, Université de Mons, Place du Parc 20, 7000 Mons, Belgium
| | - David B. Amabilino
- Institut de Ciència de Materials de Barcelona (CSIC), Campus Universitari de Bellaterra, 08193 Cerdanyola del Vallès, Catalonia, Spain
| | - Narcis Avarvari
- Université d'Angers, CNRS, Laboratoire MOLTECH-Anjou, UMR 6200, UFR Sciences, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
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213
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Oberhumer PM, Huang YS, Massip S, James DT, Tu G, Albert-Seifried S, Beljonne D, Cornil J, Kim JS, Huck WTS, Greenham NC, Hodgkiss JM, Friend RH. Tuning the electronic coupling in a low-bandgap donor–acceptor copolymer via the placement of side-chains. J Chem Phys 2011; 134:114901. [DOI: 10.1063/1.3562936] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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214
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Cornil J, Calbert J, Beljonne D, Dos Santos D, Bredas J. Influence of Structural Organization On Optical and Transport Properties in Organic Materials. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-598-bb1.4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTCorrelated quantum-chemical calculations performed on supermolecular structures, i.e., on clusters made of several oligomer chains in interaction, provide insight into structure-property relationships in well-organized molecular films. This supermolecular approach is applied to crystalline phases of two prototypical conjugated oligomers and shows that variations in chain packing can lead to dramatically different optical (Davydov) splittings and carrier mobilities. Optimal chain organizations for various types of devices are discussed.
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215
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Idé J, Méreau R, Ducasse L, Castet F, Olivier Y, Martinelli N, Cornil J, Beljonne D. Supramolecular Organization and Charge Transport Properties of Self-Assembled π−π Stacks of Perylene Diimide Dyes. J Phys Chem B 2011; 115:5593-603. [DOI: 10.1021/jp111422v] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Julien Idé
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 351 Cours de la Libération, 33405 Talence, France
| | - Raphaël Méreau
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 351 Cours de la Libération, 33405 Talence, France
| | - Laurent Ducasse
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 351 Cours de la Libération, 33405 Talence, France
| | - Frédéric Castet
- Université de Bordeaux, Institut des Sciences Moléculaires, UMR 5255 CNRS, 351 Cours de la Libération, 33405 Talence, France
| | - Yoann Olivier
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Nicolas Martinelli
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Jérôme Cornil
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
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216
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Papadopoulos TA, Muccioli L, Athanasopoulos S, Walker AB, Zannoni C, Beljonne D. Does supramolecular ordering influence exciton transport in conjugated systems? Insight from atomistic simulations. Chem Sci 2011. [DOI: 10.1039/c0sc00467g] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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217
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Sukul PK, Asthana D, Mukhopadhyay P, Summa D, Muccioli L, Zannoni C, Beljonne D, Rowan AE, Malik S. Assemblies of perylene diimide derivatives with melamine into luminescent hydrogels. Chem Commun (Camb) 2011; 47:11858-60. [DOI: 10.1039/c1cc14189a] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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218
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Zalewski L, Wykes M, Brovelli S, Bonini M, Breiner T, Kastler M, Dötz F, Beljonne D, Anderson HL, Cacialli F, Samorì P. Corrigendum: A Conjugated Thiophene-Based Rotaxane: Synthesis, Spectroscopy, and Modeling. Chemistry 2010. [DOI: 10.1002/chem.201090230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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219
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Campo J, Painelli A, Terenziani F, Van Regemorter T, Beljonne D, Goovaerts E, Wenseleers W. First Hyperpolarizability Dispersion of the Octupolar Molecule Crystal Violet: Multiple Resonances and Vibrational and Solvation Effects. J Am Chem Soc 2010; 132:16467-78. [DOI: 10.1021/ja105600t] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jochen Campo
- Department of Physics, University of Antwerp (campus Drie Eiken), Universiteitsplein 1, B-2610 Antwerpen, Belgium, Dipartimento di Chimica GIAF and INSTM UdR-Parma, Università di Parma, Parco Area delle Scienze 17/a, 43100 Parma, Italy, and Chemistry of Novel Materials, Center for Research in Molecular Electronics and Photonics, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Anna Painelli
- Department of Physics, University of Antwerp (campus Drie Eiken), Universiteitsplein 1, B-2610 Antwerpen, Belgium, Dipartimento di Chimica GIAF and INSTM UdR-Parma, Università di Parma, Parco Area delle Scienze 17/a, 43100 Parma, Italy, and Chemistry of Novel Materials, Center for Research in Molecular Electronics and Photonics, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Francesca Terenziani
- Department of Physics, University of Antwerp (campus Drie Eiken), Universiteitsplein 1, B-2610 Antwerpen, Belgium, Dipartimento di Chimica GIAF and INSTM UdR-Parma, Università di Parma, Parco Area delle Scienze 17/a, 43100 Parma, Italy, and Chemistry of Novel Materials, Center for Research in Molecular Electronics and Photonics, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Tanguy Van Regemorter
- Department of Physics, University of Antwerp (campus Drie Eiken), Universiteitsplein 1, B-2610 Antwerpen, Belgium, Dipartimento di Chimica GIAF and INSTM UdR-Parma, Università di Parma, Parco Area delle Scienze 17/a, 43100 Parma, Italy, and Chemistry of Novel Materials, Center for Research in Molecular Electronics and Photonics, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - David Beljonne
- Department of Physics, University of Antwerp (campus Drie Eiken), Universiteitsplein 1, B-2610 Antwerpen, Belgium, Dipartimento di Chimica GIAF and INSTM UdR-Parma, Università di Parma, Parco Area delle Scienze 17/a, 43100 Parma, Italy, and Chemistry of Novel Materials, Center for Research in Molecular Electronics and Photonics, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Etienne Goovaerts
- Department of Physics, University of Antwerp (campus Drie Eiken), Universiteitsplein 1, B-2610 Antwerpen, Belgium, Dipartimento di Chimica GIAF and INSTM UdR-Parma, Università di Parma, Parco Area delle Scienze 17/a, 43100 Parma, Italy, and Chemistry of Novel Materials, Center for Research in Molecular Electronics and Photonics, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Wim Wenseleers
- Department of Physics, University of Antwerp (campus Drie Eiken), Universiteitsplein 1, B-2610 Antwerpen, Belgium, Dipartimento di Chimica GIAF and INSTM UdR-Parma, Università di Parma, Parco Area delle Scienze 17/a, 43100 Parma, Italy, and Chemistry of Novel Materials, Center for Research in Molecular Electronics and Photonics, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
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220
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Leen V, Qin W, Yang W, Cui J, Xu C, Tang X, Liu W, Robeyns K, Van Meervelt L, Beljonne D, Lazzaroni R, Tonnelé C, Boens N, Dehaen W. Cover Picture: Synthesis, Spectroscopy, Crystal Structure Determination, and Quantum Chemical Calculations of BODIPY Dyes with Increasing Conformational Restriction and Concomitant Red-Shifted Visible Absorption and Fluorescence Spectra (Chem. Asian J. 9/. Chem Asian J 2010. [DOI: 10.1002/asia.201090028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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221
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Liedtke A, O’Neill M, Kelly SM, Kitney SP, Van Averbeke B, Boudard P, Beljonne D, Cornil J. Optical Properties of Light-Emitting Nematic Liquid Crystals: A Joint Experimental and Theoretical Study. J Phys Chem B 2010; 114:11975-82. [DOI: 10.1021/jp104280w] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alicia Liedtke
- Departments of Physics and Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, U.K., and Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Mary O’Neill
- Departments of Physics and Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, U.K., and Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Stephen M. Kelly
- Departments of Physics and Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, U.K., and Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Stuart P. Kitney
- Departments of Physics and Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, U.K., and Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Bernard Van Averbeke
- Departments of Physics and Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, U.K., and Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Pol Boudard
- Departments of Physics and Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, U.K., and Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - David Beljonne
- Departments of Physics and Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, U.K., and Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Jérôme Cornil
- Departments of Physics and Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, U.K., and Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium
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222
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Leen V, Qin W, Yang W, Cui J, Xu C, Tang X, Liu W, Robeyns K, Van Meervelt L, Beljonne D, Lazzaroni R, Tonnelé C, Boens N, Dehaen W. Synthesis, Spectroscopy, Crystal Structure Determination, and Quantum Chemical Calculations of BODIPY Dyes with Increasing Conformational Restriction and Concomitant Red-Shifted Visible Absorption and Fluorescence Spectra. Chem Asian J 2010; 5:2016-26. [DOI: 10.1002/asia.201000248] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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223
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Emelianova EV, Athanasopoulos S, Silbey RJ, Beljonne D. 2D excitons as primary energy carriers in organic crystals: the case of oligoacenes. Phys Rev Lett 2010; 104:206405. [PMID: 20867046 DOI: 10.1103/physrevlett.104.206405] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Indexed: 05/29/2023]
Abstract
A number of organic crystals show anisotropic excitonic couplings, with weak interlayer interactions between molecules that are more strongly coupled within the layers. The resulting energy carriers are intralayer 2D excitons that diffuse along the interlayer direction. We model this analytically for infinite layers and using quantum-chemical calculations of the electronic couplings for anthracene clusters. We show that the exciton hopping rates and diffusion lengths depend in a subtle manner on the size and shape of the interacting aggregates, temperature, and the presence of energetic disorder.
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Affiliation(s)
- E V Emelianova
- Laboratory for Chemistry of Novel Materials, University of Mons, Place du Parc 20, B-7000 Mons, Belgium.
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224
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Zalewski L, Wykes M, Brovelli S, Bonini M, Breiner T, Kastler M, Dötz F, Beljonne D, Anderson H, Cacialli F, Samorì P. Cover Picture: A Conjugated Thiophene-Based Rotaxane: Synthesis, Spectroscopy, and Modeling (Chem. Eur. J. 13/2010). Chemistry 2010. [DOI: 10.1002/chem.201090057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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225
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Zalewski L, Wykes M, Brovelli S, Bonini M, Breiner T, Kastler M, Dötz F, Beljonne D, Anderson H, Cacialli F, Samorì P. A Conjugated Thiophene-Based Rotaxane: Synthesis, Spectroscopy, and Modeling. Chemistry 2010; 16:3933-41. [DOI: 10.1002/chem.200903353] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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226
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Palermo V, Schwartz E, Finlayson CE, Liscio A, Otten MBJ, Trapani S, Müllen K, Beljonne D, Friend RH, Nolte RJM, Rowan AE, Samorì P. Macromolecular scaffolding: the relationship between nanoscale architecture and function in multichromophoric arrays for organic electronics. Adv Mater 2010; 22:E81-E88. [PMID: 20217805 DOI: 10.1002/adma.200903672] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The optimization of the electronic properties of molecular materials based on optically or electrically active organic building blocks requires a fine-tuning of their self-assembly properties at surfaces. Such a fine-tuning can be obtained on a scale up to 10 nm by mastering principles of supramolecular chemistry, i.e., by using suitably designed molecules interacting via pre-programmed noncovalent forces. The control and fine-tuning on a greater length scale is more difficult and challenging. This Research News highlights recent results we obtained on a new class of macromolecules that possess a very rigid backbone and side chains that point away from this backbone. Each side chain contains an organic semiconducting moiety, whose position and electronic interaction with neighboring moieties are dictated by the central macromolecular scaffold. A combined experimental and theoretical approach has made it possible to unravel the physical and chemical properties of this system across multiple length scales. The (opto)electronic properties of the new functional architectures have been explored by constructing prototypes of field-effect transistors and solar cells, thereby providing direct insight into the relationship between architecture and function.
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Affiliation(s)
- Vincenzo Palermo
- Instituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Bologna, Italy.
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227
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Ghizdavu L, Pierard F, Rickling S, Aury S, Surin M, Beljonne D, Lazzaroni R, Murat P, Defrancq E, Moucheron C, Kirsch-De Mesmaeker A. Oxidizing Ru(II) complexes as irreversible and specific photo-cross-linking agents of oligonucleotide duplexes. Inorg Chem 2010; 48:10988-94. [PMID: 19874040 DOI: 10.1021/ic901007w] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Oxidizing polyazaaromatic Ru(II) complexes containing two TAP ligands (TAP = 1,4,5,8-tetraazaphenanthrene) are able under illumination to cross-link irreversibly the two strands of an oligonucleotide (ODN) duplex by covalent bond formation. The cross-linking proceeds by two successive absorptions of a photon. An adduct of the metallic complex on a guanine (G) base of one ODN strand is first photoproduced, followed by a second photoaddition of the same Ru species to a G base of the complementary strand, provided that the two G moieties are separated by 0 or 1 base pair. These two processes lead to the cross-linking of the two strands. Such a photo-cross-linking is easily detected with [Ru(TAP)(2)(phen)](2+) (1; phen = 1,10-phenanthroline) and [Ru(HAT)(2)(phen)](2+) (2; HAT = 1,4,5,8,9,12-hexaazatriphenylene), whereas it is not observed with [Ru(TAP)(2)TPAC](2+) (3; TPAC = tetrapyridoacridine) at the same level of loading of the duplex by 3. With a concentration of 3 similar to that of 1 and 2, when the loading of the duplex by 3 is much more important than with 1 and 2, the photo-cross-linking with 3 can thus also be observed. As 3 intercalates its TPAC ligand into the base pairs stack, its mobility is restricted in the duplex. In contrast, 1 and 2 can adopt different geometries of interaction, which probably facilitate the photo-cross-linking.
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Affiliation(s)
- Liana Ghizdavu
- Université libre de Bruxelles, Chimie Organique et Photochimie CP 160/08, av. F.D. Roosevelt 50, B-1050 Brussels, Belgium
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228
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Abstract
The ability to improve exciton diffusion lengths is a key issue in optimizing many opto-electronic devices based on conjugated polymers. On the basis of quantum-chemical calculations, we investigate a strategy consisting of extending the radiative lifetime of energy carriers through incorporation along the polymer backbone of repeating units with forbidden optical transition. The results obtained for poly(p-phenylenebutadiyne), PPE, and poly(p-triphenylenebutadiyne), PTPE, show that the larger number of hops performed by the electronic excitations during their lifetime in PTPE is compensated by the smaller hopping length (associated with the reduced conjugation length), so that similar on-chain diffusion lengths are predicted in both polymers.
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Affiliation(s)
- Bernard Van Averbeke
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
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229
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Curutchet C, Feist FA, Averbeke BV, Mennucci B, Jacob J, Müllen K, Basché T, Beljonne D. Superexchange-mediated electronic energy transfer in a model dyad. Phys Chem Chem Phys 2010; 12:7378-85. [DOI: 10.1039/c003496g] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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230
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Martinelli NG, Olivier Y, Athanasopoulos S, Ruiz Delgado MC, Pigg KR, da Silva Filho DA, Sánchez-Carrera RS, Venuti E, Della Valle RG, Brédas JL, Beljonne D, Cornil J. Influence of intermolecular vibrations on the electronic coupling in organic semiconductors: the case of anthracene and perfluoropentacene. Chemphyschem 2009; 10:2265-73. [PMID: 19637205 DOI: 10.1002/cphc.200900298] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We have performed classical molecular dynamics simulations and quantum-chemical calculations on molecular crystals of anthracene and perfluoropentacene. Our goal is to characterize the amplitudes of the room-temperature molecular displacements and the corresponding thermal fluctuations in electronic transfer integrals, which constitute a key parameter for charge transport in organic semiconductors. Our calculations show that the thermal fluctuations lead to Gaussian-like distributions of the transfer integrals centered around the values obtained for the equilibrium crystal geometry. The calculated distributions have been plugged into Monte-Carlo simulations of hopping transport, which show that lattice vibrations impact charge transport properties to various degrees depending on the actual crystal structure.
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Affiliation(s)
- Nicolas G Martinelli
- Chemistry of Novel Materials, University of Mons, Place du Parc 20, 7000 Mons, Belgium
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231
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Martinelli NG, Olivier Y, Athanasopoulos S, Ruiz Delgado MC, Pigg KR, da Silva Filho DA, Sánchez-Carrera RS, Venuti E, Della Valle RG, Brédas JL, Beljonne D, Cornil J. Inside Cover: Influence of Intermolecular Vibrations on the Electronic Coupling in Organic Semiconductors: The Case of Anthracene and Perfluoropentacene (ChemPhysChem 13/2009). Chemphyschem 2009. [DOI: 10.1002/cphc.200990051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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232
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Abstract
After photoexcitation, energy absorbed by a molecule can be transferred efficiently over a distance of up to several tens of angstroms to another molecule by the process of resonance energy transfer, RET (also commonly known as electronic energy transfer, EET). Examples of where RET is observed include natural and artificial antennae for the capture and energy conversion of light, amplification of fluorescence-based sensors, optimization of organic light-emitting diodes, and the measurement of structure in biological systems (FRET). Forster theory has proven to be very successful at estimating the rate of RET in many donor-acceptor systems, but it has also been of interest to discover when this theory does not work. By identifying these cases, researchers have been able to obtain, sometimes surprising, insights into excited-state dynamics in complex systems. In this article, we consider various ways that electronic energy transfer is promoted by mechanisms beyond those explicitly considered in Forster RET theory. First, we recount the important situations when the electronic coupling is not accurately calculated by the dipole-dipole approximation. Second, we examine the related problem of how to describe solvent screening when the dipole approximation fails. Third, there are situations where we need to be careful about the separability of electronic coupling and spectral overlap factors. For example, when the donors and/or acceptors are molecular aggregates rather than individual molecules, then RET occurs between molecular exciton states and we must invoke generalized Forster theory (GFT). In even more complicated cases, involving the intermediate regime of electronic energy transfer, we should consider carefully nonequilibrium processes and coherences and how bath modes can be shared. Lastly, we discuss how information is obscured by various forms of energetic disorder in ensemble measurements and we outline how single molecule experiments continue to be important in these instances.
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Affiliation(s)
- David Beljonne
- Laboratory for Chemistry of Novel Materials, Center for Research on Molecular Electronics and Photonics, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons Belgium
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233
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Viani L, Tolbod LP, Jazdzyk M, Patrinoiu G, Cordella F, Mura A, Bongiovanni G, Botta C, Beljonne D, Cornil J, Hanack M, Egelhaaf HJ, Gierschner J. Spatial Control of 3D Energy Transfer in Supramolecular Nanostructured Host−Guest Architectures. J Phys Chem B 2009; 113:10566-70. [DOI: 10.1021/jp904415z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Lucas Viani
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
| | - Lars Poulsen Tolbod
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
| | - Mikael Jazdzyk
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
| | - Greta Patrinoiu
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
| | - Fabrizio Cordella
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
| | - Andrea Mura
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
| | - Giovanni Bongiovanni
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
| | - Chiara Botta
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
| | - Jérôme Cornil
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
| | - Michael Hanack
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
| | - Hans-Joachim Egelhaaf
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
| | - Johannes Gierschner
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, B-7000 Mons, Belgium, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, Department of Nuclear Medicine, Aarhus University Hospital, Noerrebrogade 44, 8000 Aarhus C, Denmark, Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany, Istituto per lo Studio delle Macromolecole, C.N.R., via
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234
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Hennebicq E, Beljonne D, Curutchet C, Scholes GD, Silbey RJ. Shared-mode assisted resonant energy transfer in the weak coupling regime. J Chem Phys 2009; 130:214505. [DOI: 10.1063/1.3140273] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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235
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Gierschner J, Huang YS, Van Averbeke B, Cornil J, Friend RH, Beljonne D. Excitonic versus electronic couplings in molecular assemblies: The importance of non-nearest neighbor interactions. J Chem Phys 2009; 130:044105. [PMID: 19191375 DOI: 10.1063/1.3065267] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We demonstrate that for a range of phenylene- and thiophene-based conjugated polymers of practical relevance for optoelectronic applications, exciton couplings in one-dimensional stacks deviate significantly from the nearest neighbor approximation. Instead, long-range interactions with non-nearest neighbors have to be included, which become increasingly important with growing oligomer size. While the exciton coupling vanishes for infinitely long ideal polymer chains and provides a sensitive measure of the actual conjugation length, the electronic coupling mediating charge transport shows rapid convergence with molecular size. Similar results have been obtained for very different molecular backbones, thus highlighting the general character of these findings.
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Affiliation(s)
- Johannes Gierschner
- Madrid Institute for Advanced Studies IMDEA-Nanoscience, Universidad Autonoma de Madrid, Modulo C-IX, Av. Tomas y Valiente 7, Campus de Cantoblanco, 28049 Madrid, Spain.
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236
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Braeken E, Marsal P, Vandendriessche A, Smet M, Dehaen W, Vallée R, Beljonne D, Van der Auweraer M. Investigation of probe molecule–polymer interactions. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2009.02.083] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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237
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Dykstra TE, Hennebicq E, Beljonne D, Gierschner J, Claudio G, Bittner ER, Knoester J, Scholes GD. Conformational disorder and ultrafast exciton relaxation in PPV-family conjugated polymers. J Phys Chem B 2009; 113:656-67. [PMID: 19105646 DOI: 10.1021/jp807249b] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We report combined experimental and theoretical studies of excitation relaxation in poly[2-methoxy,5-(2'-ethyl-hexoxy)-1,4-phenylenevinylene] (MEH-PPV), oligophenylenevinylene (OPV) molecules of varying length, and model PPV chains. We build on the paradigm that the basic characteristics of conjugated polymers are decided by conformational subunits defined by conjugation breaks caused by torsional disorder along the chain. The calculations reported here indicate that for conjugated polymers like those in the PPV family, these conformational subunits electronically couple to neighboring subunits, forming subtly delocalized collective states of nanoscale excitons that determine the polymer optical properties. We find that relaxation among these exciton states can lead to a decay of anisotropy on ultrafast time scales. Unlike in Forster energy transfer, the exciton does not necessarily translate over a large distance. Nonetheless, the disorder in the polymer chain means that even small changes in the exciton size or location has a significant effect on the relaxation pathway and therefore the anisotropy decay.
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Affiliation(s)
- Tieneke E Dykstra
- Lash-Miller Chemical Laboratories, Institute for Optical Sciences and Centre for Quantum Information and Quantum Control, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6 Canada
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238
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Affiliation(s)
- Bernard Van Averbeke
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
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239
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Schwartz E, Palermo V, Finlayson C, Huang YS, Otten M, Liscio A, Trapani S, González-Valls I, Brocorens P, Cornelissen J, Peneva K, Müllen K, Spano F, Yartsev A, Westenhoff S, Friend R, Beljonne D, Nolte R, Samorì P, Rowan A. “Helter-Skelter-Like” Perylene Polyisocyanopeptides. Chemistry 2009; 15:2536-47. [DOI: 10.1002/chem.200801746] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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240
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De Leener C, Hennebicq E, Sancho-Garcia JC, Beljonne D. Modeling the Dynamics of Chromophores in Conjugated Polymers: The Case of Poly(2-methoxy-5-(2′-ethylhexyl)oxy 1,4-phenylene vinylene) (MEH-PPV). J Phys Chem B 2009; 113:1311-22. [DOI: 10.1021/jp8029902] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [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)
- Caroline De Leener
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, 20 Place du Parc, B-7000 Mons, Belgium, and Departamento de Química Física, Universidad de Alicante, E-03080 Alicante, Spain
| | - Emmanuelle Hennebicq
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, 20 Place du Parc, B-7000 Mons, Belgium, and Departamento de Química Física, Universidad de Alicante, E-03080 Alicante, Spain
| | - Juan-Carlos Sancho-Garcia
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, 20 Place du Parc, B-7000 Mons, Belgium, and Departamento de Química Física, Universidad de Alicante, E-03080 Alicante, Spain
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, 20 Place du Parc, B-7000 Mons, Belgium, and Departamento de Química Física, Universidad de Alicante, E-03080 Alicante, Spain
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Srinivasan G, Villanueva-Garibay JA, Müller K, Oelkrug D, Milian Medina B, Beljonne D, Cornil J, Wykes M, Viani L, Gierschner J, Martinez-Alvarez R, Jazdzyk M, Hanack M, Egelhaaf HJ. Dynamics of guest molecules in PHTP inclusion compounds as probed by solid-state NMR and fluorescence spectroscopy. Phys Chem Chem Phys 2009; 11:4996-5009. [DOI: 10.1039/b820604j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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242
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Linares M, Minoia A, Brocorens P, Beljonne D, Lazzaroni R. Expression of chirality in molecular layers at surfaces: insights from modelling. Chem Soc Rev 2009; 38:806-16. [DOI: 10.1039/b801638k] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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243
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Singh J, Bittner ER, Beljonne D, Scholes GD. Fluorescence depolarization in poly[2-methoxy-5-((2-ethylhexyl)oxy)-1,4-phenylenevinylene]: Sites versus eigenstates hopping. J Chem Phys 2009; 131:194905. [DOI: 10.1063/1.3259549] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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244
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Qin W, Leen V, Rohand T, Dehaen W, Dedecker P, Van der Auweraer M, Robeyns K, Van Meervelt L, Beljonne D, Van Averbeke B, Clifford JN, Driesen K, Binnemans K, Boens N. Synthesis, Spectroscopy, Crystal Structure, Electrochemistry, and Quantum Chemical and Molecular Dynamics Calculations of a 3-Anilino Difluoroboron Dipyrromethene Dye. J Phys Chem A 2008; 113:439-47. [DOI: 10.1021/jp8077584] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.8] [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)
- Wenwu Qin
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Volker Leen
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Taoufik Rohand
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Wim Dehaen
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Peter Dedecker
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Mark Van der Auweraer
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Koen Robeyns
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Luc Van Meervelt
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - David Beljonne
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Bernard Van Averbeke
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - John N. Clifford
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Kris Driesen
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Koen Binnemans
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Noël Boens
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200f—bus 02404, 3001 Leuven, Belgium, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China, and Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
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245
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Kim JS, Lu L, Sreearunothai P, Seeley A, Yim KH, Petrozza A, Murphy CE, Beljonne D, Cornil J, Friend RH. Optoelectronic and charge transport properties at organic-organic semiconductor interfaces: comparison between polyfluorene-based polymer blend and copolymer. J Am Chem Soc 2008; 130:13120-31. [PMID: 18767836 DOI: 10.1021/ja803766j] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report detailed studies of optoelectronic and charge transport properties at the organic-organic semiconductor interfaces formed between polymer chains (interchain) and within a polymer chain (intrachain). These interfaces are fabricated using poly(9,9-di-n-octylfluorene-alt-N-(4-butylphenyl)diphenylamine) (TFB [f8-tfb]) (electron-donor) and poly(9,9-di-n-octylfluorene-alt-benzothiadiazole) (F8BT [f8-bt]) (electron-acceptor) conjugated polymers, by blending them together or by covalently attaching them via a main polymer backbone (copolymer). For optoelectronic properties, when a bulky and twisted tfb molecule is incorporated into a rigid F8BT conjugated backbone, it disturbs the conjugation of F8BT polymer, leading to a blue-shift in the lowest absorption transition. However, by acting as an effective electron donor, it assists the formation of an intrachain singlet exciton that has a strong charge-transfer character, leading to a red-shifted and longer-lived emission than that of F8BT. An extremely efficient and fast energy transfer from tfb donor to bt acceptor is observed in the copolymer (<1 ps) compared to transfer from TFB to F8BT in the blend (tens of ps). This efficient energy transfer in the copolymer is found to be associated with its low fluorescence efficiency (40-45% vs 60-65% for blend) because of the migration of radiative singlet excitons to low-energy states such as triplet and exciplex states that are nonemissive or weakly emissive. The presence of molecular-scale tfb-f8-bt interfaces in the copolymer, however, does not hinder an efficient transport of charge carriers at high drive voltages. Instead, it provides a better balance of charge carriers inside the device, which leads to slower decay of the device efficiency and thus more stable light-emitting diodes with increasing voltage than the blend devices. These distinctive optoelectronic and charge transport properties observed at different organic-organic semiconductor interfaces will provide useful input for the design rules of conjugated polymers required for improved molecular electronics.
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Affiliation(s)
- Ji-Seon Kim
- Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, UK.
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246
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Linares M, Iavicoli P, Psychogyiopoulou K, Beljonne D, De Feyter S, Amabilino DB, Lazzaroni R. Chiral expression at the solid-liquid interface: a joint experimental and theoretical study of the self-assembly of chiral porphyrins on graphite. Langmuir 2008; 24:9566-9574. [PMID: 18652420 DOI: 10.1021/la8017419] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The chiral organization of an enantiopure functional molecule on an achiral surface has been studied with the aim of understanding the influence of stereogenic centers on the self-assembly in two dimensions. A chiral tetra meso-amidophenyl-substituted porphyrin containing long hydrophobic tails at the periphery of the conjugated pi-electron system was prepared for this purpose. Scanning tunneling microscopy (STM) images of the compound at the graphite-heptanol interface reveal a chiral arrangement of the molecules, with the porphyrin rows tilted by 13 degrees with respect to the normal to the graphite axes. In terms of molecular modeling, a combination of molecular dynamics simulations on systems constrained by periodic boundary conditions and on unconstrained large molecular aggregates has been applied to reach a quantitative interpretation on both the density of the layer and its orientation with respect to the graphite surface. The results show clearly that (i) the methyl groups of the stereogenic point toward the graphite surface and (ii) the porphyrin molecules self-assemble into an interdigitated structure where the alkyl chains align along one of the graphite axes and the porphyrin cores are slightly shifted with respect to one another. The direction of this shift, which defines the chirality of the monolayer, is set by the chirality of the stereogenic centers. Such an arrangement results in the formation of a dense chiral monolayer that is further stabilized by hydrogen bonding with protic solvents.
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Affiliation(s)
- Mathieu Linares
- Service de Chimie des Materiaux Nouveaux, Universite de Mons-Hainaut, 20, Place du Parc, B-7000 Mons, Belgium
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247
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Spano FC, Meskers SCJ, Hennebicq E, Beljonne D. Using circularly polarized luminescence to probe exciton coherence in disordered helical aggregates. J Chem Phys 2008; 129:024704. [DOI: 10.1063/1.2943647] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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248
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Qin W, Baruah M, Sliwa M, Van der Auweraer M, De Borggraeve WM, Beljonne D, Van Averbeke B, Boens N. Ratiometric, Fluorescent BODIPY Dye with Aza Crown Ether Functionality: Synthesis, Solvatochromism, and Metal Ion Complex Formation. J Phys Chem A 2008; 112:6104-14. [DOI: 10.1021/jp800261v] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wenwu Qin
- Department of Chemistry and Institute for Nanoscale Physics and Chemistry (INPAC), Katholieke Universiteit Leuven, Celestijnenlaan 200f-bus 02404, 3001 Leuven, Belgium, Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Mukulesh Baruah
- Department of Chemistry and Institute for Nanoscale Physics and Chemistry (INPAC), Katholieke Universiteit Leuven, Celestijnenlaan 200f-bus 02404, 3001 Leuven, Belgium, Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Michel Sliwa
- Department of Chemistry and Institute for Nanoscale Physics and Chemistry (INPAC), Katholieke Universiteit Leuven, Celestijnenlaan 200f-bus 02404, 3001 Leuven, Belgium, Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Mark Van der Auweraer
- Department of Chemistry and Institute for Nanoscale Physics and Chemistry (INPAC), Katholieke Universiteit Leuven, Celestijnenlaan 200f-bus 02404, 3001 Leuven, Belgium, Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Wim M. De Borggraeve
- Department of Chemistry and Institute for Nanoscale Physics and Chemistry (INPAC), Katholieke Universiteit Leuven, Celestijnenlaan 200f-bus 02404, 3001 Leuven, Belgium, Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - David Beljonne
- Department of Chemistry and Institute for Nanoscale Physics and Chemistry (INPAC), Katholieke Universiteit Leuven, Celestijnenlaan 200f-bus 02404, 3001 Leuven, Belgium, Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Bernard Van Averbeke
- Department of Chemistry and Institute for Nanoscale Physics and Chemistry (INPAC), Katholieke Universiteit Leuven, Celestijnenlaan 200f-bus 02404, 3001 Leuven, Belgium, Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
| | - Noël Boens
- Department of Chemistry and Institute for Nanoscale Physics and Chemistry (INPAC), Katholieke Universiteit Leuven, Celestijnenlaan 200f-bus 02404, 3001 Leuven, Belgium, Laboratory for Chemistry of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium
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249
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Huang YS, Westenhoff S, Avilov I, Sreearunothai P, Hodgkiss JM, Deleener C, Friend RH, Beljonne D. Electronic structures of interfacial states formed at polymeric semiconductor heterojunctions. Nat Mater 2008; 7:483-489. [PMID: 18438413 DOI: 10.1038/nmat2182] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2007] [Accepted: 03/20/2008] [Indexed: 05/26/2023]
Abstract
Heterojunctions between organic semiconductors are central to the operation of light-emitting and photovoltaic diodes, providing respectively for electron-hole capture and separation. However, relatively little is known about the character of electronic excitations stable at the heterojunction. We have developed molecular models to study such interfacial excited electronic excitations that form at the heterojunction between model polymer donor and polymer acceptor systems: poly(9,9-dioctylfluorene-co-bis-N,N-(4-butylphenyl)-bis-N,N-phenyl-1,4-phenylenediamine) (PFB) with poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT), and poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) (TFB) with F8BT. We find that for stable ground-state geometries the excited state has a strong charge-transfer character. Furthermore, when partly covalent, modelled radiative lifetimes (approximately 10(-7) s) and off-chain axis polarization (30 degrees) match observed 'exciplex' emission. Additionally for the PFB:F8BT blend, geometries with fully ionic character are also found, thus accounting for the low electroluminescence efficiency of this system.
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Affiliation(s)
- Ya-shih Huang
- Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK
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250
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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