1
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Yamamoto S, Yasuda T, Kanbara T, Kuwabara J. Facile Synthesis of 1,7-Phenanthroline Derivatives and Evaluation of Their Properties as Hole-Blocking Materials in Organic Light-Emitting Diodes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20210461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sachie Yamamoto
- Tsukuba Research Center for Energy Materials Science (TREMS), Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Takeshi Yasuda
- Research Center for Functional Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Takaki Kanbara
- Tsukuba Research Center for Energy Materials Science (TREMS), Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Junpei Kuwabara
- Tsukuba Research Center for Energy Materials Science (TREMS), Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
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2
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Chakraborty R, Rothberg LJ. Role of Aggregates in the Luminescence Decay Dynamics of Conjugated Polymers. J Phys Chem A 2016; 120:551-5. [DOI: 10.1021/acs.jpca.5b11349] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rajarshi Chakraborty
- Materials
Science Program, University of Rochester, Rochester, New York 14627, United States
| | - Lewis J Rothberg
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
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3
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Legaspi CM, Peteanu LA, Yaron DJ. Modeling Field-Induced Quenching in Poly(p-phenylene vinylene) Polymers and Oligomers. J Phys Chem B 2015; 119:7625-34. [DOI: 10.1021/jp511544c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Christian M. Legaspi
- Carnegie Mellon University, 4400
Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Linda A. Peteanu
- Carnegie Mellon University, 4400
Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - David J. Yaron
- Carnegie Mellon University, 4400
Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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4
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Impurity effects and temperature influence on the exciton dissociation dynamics in conjugated polymers. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.06.065] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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5
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Collini E, Todescato F, Ferrante C, Bozio R, Scholes GD. Photophysics and dynamics of surface plasmon polaritons-mediated energy transfer in the presence of an applied electric field. J Am Chem Soc 2012; 134:10061-70. [PMID: 22616877 DOI: 10.1021/ja3014314] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The possibility to transfer energy between molecular excitons across a metal film up to 150 nm thick represents a very attractive solution to control and improve the performances of thin optoeletronic devices. This process involves the presence of coupled surface plasmon polaritons (SPPs) at the two dielectric-metal interfaces, capable of mediating the interactions between donor and acceptor, located on opposite sides of the metal film. In this Article, the photophysics and the dynamics of an efficient SPP-mediated energy transfer between a suitable dye and a conjugated polymer is characterized by means of steady-state and time-resolved photoluminescence techniques. The process is studied in model multilayer structures (donor/metal/acceptor) as well as in electrically pumped heterostructures (donor/metal cathode/acceptor/anode), to verify the effects of applied electric fields on the efficiency and the dynamics of SPP-mediated energy transfer. A striking enhancement of the overall luminescence was recorded in a particular range of applied bias, suggesting the presence of cooperative effects between optical and electrical stimulations.
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Affiliation(s)
- Elisabetta Collini
- Department of Chemical Sciences and INSTM, University of Padova, Via Marzolo 1, I-35131 Padova, Italy.
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6
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Moscatelli A, Livingston K, So WY, Lee SJ, Scherf U, Wildeman J, Peteanu LA. Electric-field-induced fluorescence quenching in polyfluorene, ladder-type polymers, and MEH-PPV: evidence for field effects on internal conversion rates in the low concentration limit. J Phys Chem B 2010; 114:14430-9. [PMID: 20707332 DOI: 10.1021/jp101307p] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Electric field-induced fluorescence quenching has been measured for a series of conjugated polymers with applications in organic light-emitting diodes. Electrofluorescence measurements on isolated chains in a glassy matrix at 77 K show that the quenching efficiency for poly[2-methoxy-5-(2-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV) is an order of magnitude larger than that for either a ladder-type polymer (MeLPPP) or polyfluorene (PFH). This effect is explained in terms of the relatively high probability of field-enhanced internal conversion deactivation in MEH-PPV relative to either MeLPPP or PFH. These data, obtained under dilute sample conditions such that chain-chain interactions are minimal, are contrasted with the much higher quenching efficiencies observed in the corresponding polymer films, and several explanations for the differences are considered. In addition, the values of the change in dipole moment and change in polarizability on excitation (|Δμ| and tr(Δα), respectively) are reported, and trends in these values as a function of molecular structure and chain length are discussed.
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Affiliation(s)
- Alberto Moscatelli
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, USA
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7
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Mehata MS, Hsu CS, Lee YP, Ohta N. Electric-Field-Induced Enhancement/Quenching of Photoluminescence of π-Conjugated Polymer S3-PPV: Excitation Energy Dependence. J Phys Chem B 2010; 114:6258-65. [DOI: 10.1021/jp912199p] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mohan Singh Mehata
- Research Institute for Electronic Science (RIES), Hokkaido University, Sapporo 001-0020, Japan
| | - Chain-Shu Hsu
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Yuan-Pern Lee
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Nobuhiro Ohta
- Research Institute for Electronic Science (RIES), Hokkaido University, Sapporo 001-0020, Japan
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8
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Macchi G, Botta C, Calzaferri G, Catti M, Cornil J, Gierschner J, Meinardi F, Tubino R. Weak forces at work in dye-loaded zeolite materials: spectroscopic investigation on cation–sulfur interactions. Phys Chem Chem Phys 2010; 12:2599-605. [DOI: 10.1039/b919880f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Kalinowski J, Mezyk J, Meinardi F, Tubino R, Cocchi M, Virgili D. Exciton quenching in emitter blends for organic light emitting devices probed by electric field-dependent time-resolved luminescence. J Chem Phys 2008; 128:124712. [PMID: 18376965 DOI: 10.1063/1.2841458] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We investigate quenching mechanisms of excited states in emitter layers for organic light emitting diodes (LEDs). An extensive study of a strong electric field-induced modulation (over 50%) of the time-resolved luminescence in a diamine derivative (TPD): polycarbonate blend films doped with an organic complex of europium are presented as a typical example of an important class of emitters for organic monochromatic LEDs. Using this method allowed us to identify the quenched species as the excited ligand precursors of the emissive europium ion states. Manipulating the electrode materials and their electrical bias, the electric field-enhanced dissociation, and interaction with injected charge could be separated and found as principal quenching mechanisms. We show the first one to follow the three-dimensional Onsager theory of geminate recombination, and the second one raised by their interaction with the TPD-transported holes. The interaction rate constant is found to be underlain by the three-dimensional diffusion of excited ligand singlets, combining the exciton diffusion coefficient and long-range (Forster type) energy transfer parameters. The dynamic parameters of the hole-precursor excitons interactions, extracted from the experimental data, allow us to establish the criteria for identifying useful ligands and matrices in the optimized design of electrophosphorescent, linelike emitting molecules, and device structure for organic LEDs.
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Affiliation(s)
- J Kalinowski
- Department of Molecular Physics, Gdańsk University of Technology, ul. G. Narutowicza 11/12, 80-952 Gdańsk, Poland.
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10
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Scheblykin IG, Yartsev A, Pullerits T, Gulbinas V, Sundström V. Excited State and Charge Photogeneration Dynamics in Conjugated Polymers. J Phys Chem B 2007; 111:6303-21. [PMID: 17521181 DOI: 10.1021/jp068864f] [Citation(s) in RCA: 217] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Conjugated polymers are becoming interesting materials for a range of optoelectronic applications. However, their often complex electronic and structural properties prevent establishment of straightforward property-function relationships. In this paper, we summarize recent results on the photophysics and excited state dynamics of conjugated polymers, in order to paint a picture of exciton formation, quenching, and generation of charge carriers.
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Affiliation(s)
- Ivan G Scheblykin
- Department of Chemical Physics, Lund University, Box 124, 221 00 Lund, Sweden
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11
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Kalinowski J, Cocchi M, Virgili D, Fattori V, Williams J. Evidence for electric field dependent dissociation of exciplexes in electron donor–acceptor organic solid films. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.10.059] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Hania P, Scheblykin I. Electric field induced quenching of the fluorescence of a conjugated polymer probed at the single molecule level. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.08.058] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Yu J, Song NW, Mcneill JD, Barbara PF. Efficient Exciton Quenching by Hole Polarons in the Conjugated Polymer MEH-PPV. Isr J Chem 2004. [DOI: 10.1560/phge-rr3p-5p7v-dgcm] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Gisslen L, Johansson A, Stafstrom S. Charge and energy dynamics in photo-excited poly(para-phenylenevinylene) systems. J Chem Phys 2004; 121:1601-8. [PMID: 15260709 DOI: 10.1063/1.1763145] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report results from simulations of charge and energy dynamics in poly(para-phenylenevinylene) (PPV) and PPV interacting with C60. The simulations were performed by solving the time-dependent Schrodinger equation and the lattice equation of motion simultaneously and nonadiabatically. The electronic system and the coupling of the electrons to the lattice were described by an extended three-dimensional version of the Su-Schrieffer-Heeger model, which also included an external electric field. Electron and lattice dynamics following electronic excitations at different energies have been simulated. The effect of additional lattice energy was also included in the simulations. Our results show that both exciton diffusion and transitions from high to lower lying excitations are stimulated by increasing the lattice energy. Also field induced charge separation occurs faster if the lattice energy is increased. This separation process is highly nonadiabatic and involves a significant rearrangement of the electron distribution. In the case of PPV coupled to C60, we observe a spontaneous charge separation. The separation time is in this case limited by the local concentration of C60 molecules close to the PPV chain.
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Affiliation(s)
- L Gisslen
- Department of Physics, IFM Linkoping University, SE-581 83 Linkoping, Sweden.
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15
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Müller JG, Lemmer U, Feldmann J, Scherf U. Precursor states for charge carrier generation in conjugated polymers probed by ultrafast spectroscopy. PHYSICAL REVIEW LETTERS 2002; 88:147401. [PMID: 11955173 DOI: 10.1103/physrevlett.88.147401] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2001] [Indexed: 05/23/2023]
Abstract
Photocurrent experiments using two femtosecond laser pulses are performed on a photodiode using a ladder-type conjugated polymer as the active layer. With a photon energy of 3.1 eV the first pulse excites singlet excitons. A time-delayed second pulse with a photon energy of 2.49 eV leads to a decrease of the photocurrent by exciton depletion due to stimulated emission. S1 excitons being dissociated during their entire lifetime are identified as the only relevant channel for charge carrier generation. Intrachain polaron pairs are also formed on an ultrafast time scale with a yield of approximately 10%. They can be efficiently dissociated by reexcitation with photons of an energy of 1.9 eV.
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Affiliation(s)
- J G Müller
- Lehrstuhl für Photonik und Optoelektronik, Sektion Physik and CeNS, Ludwig-Maximilians-Universität, Amalienstrasse 54, 80799 München, Germany
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16
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Haugeneder A, Lemmer U, Scherf U. Exciton dissociation dynamics in a conjugated polymer containing aggregate states. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(01)01343-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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18
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Yamaguchi S, Sasaki Y. Effect of Water on Primary Photocarrier-Generation Process in Y-form Titanyl Phthalocyanine. J Phys Chem B 2000. [DOI: 10.1021/jp0019557] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shoichi Yamaguchi
- Center for Analytical Chemistry and Science, Inc., Yokohama Research Center of Mitsubishi Chemical Corporation, 1000 Kamoshida, Aoba, Yokohama 227-0033, Japan
| | - Yutaka Sasaki
- Center for Analytical Chemistry and Science, Inc., Yokohama Research Center of Mitsubishi Chemical Corporation, 1000 Kamoshida, Aoba, Yokohama 227-0033, Japan
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19
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Burrows HD, Miguel MDG, Monkman AP, Horsburgh LE, Hamblett I, Navaratnam S. Pulse radiolysis studies on charge carriers in conjugated polymers. J Chem Phys 2000. [DOI: 10.1063/1.480883] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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20
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Zhang H, Hanna J. Photocarrier Generation in Smectic Phenylnaphthalene Liquid Crystalline Photoconductor. J Phys Chem B 1999. [DOI: 10.1021/jp9910082] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hong Zhang
- Imaging Science and Engineering Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama 226-8503, Japan
| | - Junichi Hanna
- Imaging Science and Engineering Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama 226-8503, Japan
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