401
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Gao F, Liang WZ, Zhao Y. Vibrationally Resolved Absorption and Emission Spectra of Rubrene Multichromophores: Temperature and Aggregation Effects. J Phys Chem A 2009; 113:12847-56. [DOI: 10.1021/jp904105p] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fang Gao
- Hefei National Laboratory for Physical Science at Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Wan Zhen Liang
- Hefei National Laboratory for Physical Science at Microscale, and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - Yang Zhao
- School of Material Science and Engineering, Nanyang Technological University, Singapore 63978, Singapore
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402
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Tenery D, Gesquiere AJ. Effect of PCBM Concentration on Photoluminescence Properties of Composite MEH-PPV/PCBM Nanoparticles Investigated by a Franck-Condon Analysis of Single-Particle Emission Spectra. Chemphyschem 2009; 10:2449-57. [DOI: 10.1002/cphc.200900413] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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403
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Hu Z, Gesquiere AJ. PCBM concentration dependent morphology of P3HT in composite P3HT/PCBM nanoparticles. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2009.05.066] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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404
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Noone KM, Anderson NC, Horwitz NE, Munro AM, Kulkarni AP, Ginger DS. Absence of photoinduced charge transfer in blends of PbSe quantum dots and conjugated polymers. ACS NANO 2009; 3:1345-1352. [PMID: 19449837 DOI: 10.1021/nn800871j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We use photoluminescence (PL) quenching and photoinduced absorption (PIA) spectroscopy to study charge transfer in bulk heterojunction blends of PbSe quantum dots with the semiconducting polymers poly-3-hexylthiophene (P3HT) and poly[2-methoxy-5-(3',7'-dimethyloctyloxy)-para-phenylene vinylene] (MDMO-PPV). PIA spectra from the PbSe blends are compared to spectra from similar blends of the polymers with phenyl-C(61)-butyric acid methyl ester (PCBM) and blends with CdSe quantum dots. We find that the MDMO-PPV PL is quenched, and the PL lifetime is shortened upon addition of PbSe quantum dots, while the PL of the P3HT is unaffected upon blending. However, for PbSe blends with both polymers, the PIA spectra show very little polaronic signal, suggesting that few, if any, long-lived charges are being produced by photoinduced charge transfer.
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Affiliation(s)
- Kevin M Noone
- Department of Chemistry, University of Washington, Seattle, WA 98195-1700, USA
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405
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Milder MTW, Herek JL, Areephong J, Feringa BL, Browne WR. Tunable Aggregation and Luminescence of Bis(diarylethene)sexithiophenes. J Phys Chem A 2009; 113:7717-24. [DOI: 10.1021/jp8113896] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maaike T. W. Milder
- FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands, and Optical Sciences Group, Department of Science and Technology, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE, Enschede, The Netherlands
| | - Jennifer L. Herek
- FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands, and Optical Sciences Group, Department of Science and Technology, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE, Enschede, The Netherlands
| | - Jetsuda Areephong
- Centre for Systems Chemistry, Stratingh Institute for Chemistry and Zernike Institute for Advanced Materials, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Ben L. Feringa
- Centre for Systems Chemistry, Stratingh Institute for Chemistry and Zernike Institute for Advanced Materials, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Wesley R. Browne
- Centre for Systems Chemistry, Stratingh Institute for Chemistry and Zernike Institute for Advanced Materials, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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406
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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: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [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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407
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Spano FC. Analysis of the UV/Vis and CD Spectral Line Shapes of Carotenoid Assemblies: Spectral Signatures of Chiral H-Aggregates. J Am Chem Soc 2009; 131:4267-78. [DOI: 10.1021/ja806853v] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Frank C. Spano
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122
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408
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Spano FC, Clark J, Silva C, Friend RH. Determining exciton coherence from the photoluminescence spectral line shape in poly(3-hexylthiophene) thin films. J Chem Phys 2009; 130:074904. [DOI: 10.1063/1.3076079] [Citation(s) in RCA: 225] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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409
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Oosterbaan WD, Vrindts V, Berson S, Guillerez S, Douhéret O, Ruttens B, D'Haen J, Adriaensens P, Manca J, Lutsen L, Vanderzande D. Efficient formation, isolation and characterization of poly(3-alkylthiophene) nanofibres: probing order as a function of side-chain length. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b900670b] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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410
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Donor–Acceptor Block Copolymers with Nanoscale Morphology for Photovoltaic Applications. ADVANCES IN POLYMER SCIENCE 2009. [DOI: 10.1007/12_2009_34] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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411
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Stefopoulos AA, Chochos CL, Bokias G, Kallitsis JK. The role of intrachain and interchain interactions of regioregular poly(3-octylthiophene) chains on the optical properties of a new amphiphilic conjugated random copolymer in solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:11103-11110. [PMID: 18729389 DOI: 10.1021/la801178m] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The synthesis of a random copolymer through free radical copolymerization of a properly vinyl monofunctionalized regioregular poly(3-octylthiophene) (rrP3OT) macromonomer and N,N'-dimethylacrylamide (DMAM) is presented. The optical properties of the copolymer in water and in several organic solvents of varying polarity, as well as in THF/water and THF/methanol mixtures, were explored using UV-vis and photoluminescence spectroscopy. It is demonstrated that the rrP3OT chains adopt a coil conformation in solvents such as tetrahydrofuran (THF) and chloroform with the appearance of the absorption and emission maxima at 439 and 565 nm, respectively. On the contrary, the rrP3OT chains are organized on a single chain packing form (intrachain interactions) in polar solvents such as ethanol and methanol, as it is verified with the observation of the characteristic three vibronic features of the absorption spectra of the copolymer with maxima at 513, 550, and 603 nm and emission maxima at 560 nm. However, when water is used as solvent, the rrP3OT chains self-assemble into a stacklike structure due to the increased interchain interactions, as confirmed by the different aggregation process of the rrP3OT chains in the THF/water mixture, the broader absorption spectrum in water compared to those recorded in ethanol and methanol, and the 80 nm red-shifted emission maximum, centered at 640 nm.
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412
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Daniel C, Makereel F, Herz LM, Hoeben FJM, Jonkheijm P, Schenning APHJ, Meijer EW, Silva C. Mesoscopic order and the dimensionality of long-range resonance energy transfer in supramolecular semiconductors. J Chem Phys 2008; 129:104701. [DOI: 10.1063/1.2969077] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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413
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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414
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Ahn TS, Müller AM, Al-Kaysi RO, Spano FC, Norton JE, Beljonne D, Brédas JL, Bardeen CJ. Experimental and theoretical study of temperature dependent exciton delocalization and relaxation in anthracene thin films. J Chem Phys 2008; 128:054505. [DOI: 10.1063/1.2822310] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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