1
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Ma G, Li Z, Fang L, Xia W, Gu X. Effect of solvent quality and sidechain architecture on conjugated polymer chain conformation in solution. NANOSCALE 2024. [PMID: 38465951 DOI: 10.1039/d3nr05721f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Conjugated polymers (CPs) are solution-processible for various electronic applications, where solution aggregation and dynamics could impact the morphology in the solid state. Various solvents and solvent mixtures have been used to dissolve and process CPs, but few studies have quantified the effect of solvent quality on the solution behavior of CPs. Herein, we performed static light scattering and small-angle X-ray scattering combined with molecular dynamics (MD) simulation to investigate CP solution behaviors with solvents of varying quality, including poly(3-alkylthiophene) (P3ATs) with various sidechain lengths from -C4H9 to -C12H25, poly[bis(3-dodecyl-2-thienyl)-2,2'-dithiophene-5,5'-diyl] (PQT-12) and poly[2,5-bis(3-dodecylthiophen-2-yl)thieno[3,2-b]thiophene] (PBTTT-12). We found that chlorobenzene is a better solvent than toluene for various CPs, which was evident from the positive second virial coefficient A2 ranging from 0.3 to 4.7 × 10-3 cm3 mol g-2 towards P3ATs. For P3ATs in non-polar solvents, longer sidechains promote more positive A2, indicating a better polymer-solvent interaction, wherein A2 for toluene increases from -5.9 to 1.4 × 10-3 cm3 mol g-2, and in CB, A2 ranges from 1.0 to 4.7 × 10-3 cm3 mol g-2 when sidechain length increases from -C6H13 to -C12H25. Moreover, PQT-12 and PBTTT-12 have strong aggregation tendencies in all solutions, with an apparent positive A2 (∼0.5 × 10-3 cm3 mol g-2) due to multi-chain aggregates and peculiar chain folding. These solvent-dependent aggregation behaviors can be well correlated to spectroscopy measurement results. Our coarse-grained MD simulation results further suggested that CPs with long, dense, and branched sidechains can achieve enhanced polymer-solvent interaction, and thus enable overall better solution dispersion. This work provides quantitative insights into the solution behavior of conjugated polymers that can guide both the design and process of CPs toward next-generation organic electronics.
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Affiliation(s)
- Guorong Ma
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, MS, 39406, USA.
| | - Zhaofan Li
- Department of Aerospace Engineering, Iowa State University, Ames, IA 50011, USA
| | - Lei Fang
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
| | - Wenjie Xia
- Department of Aerospace Engineering, Iowa State University, Ames, IA 50011, USA
| | - Xiaodan Gu
- School of Polymer Science and Engineering, The University of Southern Mississippi, Hattiesburg, MS, 39406, USA.
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2
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Nguyen H, Lima RLS, Neto NMB, Araujo PT. What is the significance of the chloroform stabilizer C 5H 10 and its association with MeOH in concentration-dependent polymeric solutions? SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 310:123886. [PMID: 38245968 DOI: 10.1016/j.saa.2024.123886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 12/10/2023] [Accepted: 01/10/2024] [Indexed: 01/23/2024]
Abstract
The understanding of excitonic transitions associated with polymeric aggregates is fundamental, as such transitions have implications on coherence lengths, coherence numbers and inter- and intra-chain binding parameters. In this context, the investigation of efficient solvents and other ways to control polymer aggregate formation is key for their consolidation as materials for new technologies. In this manuscript, we use Poly(3-hexothiophene) (P3HT) as a probe to investigate the significance of amylene (C5H10) and its association with methanol (MeOH) in both pure and C5H10-stabilized chloroform (CHCl3)-based polymeric solutions. Using the intensity ratio between the first and second vibronic transitions of the P3HT H-aggregates formed, values for their exciton bandwidths and interchain interactions are obtained and correlated with the presence of C5H10 and MeOH as agents determining the CHCl3 quality.
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Affiliation(s)
- Huan Nguyen
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, AL, USA
| | - Ruan L S Lima
- Institute of Natural Sciences, Federal University of Para, Belem, PA, Brazil
| | | | - Paulo T Araujo
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, AL, USA.
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3
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Bourke S, Donà F, Teijeiro Gonzalez Y, Qazi Chaudhry B, Panamarova M, Mackay E, Zammit PS, Dailey LA, Eggert US, Suhling K, Green MA. Biocompatible Magnetic Conjugated Polymer Nanoparticles for Optical and Lifetime Imaging Applications in the First Biological Window. ACS APPLIED POLYMER MATERIALS 2022; 4:8193-8202. [PMID: 36405304 PMCID: PMC9667460 DOI: 10.1021/acsapm.2c01153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Conjugated polymers are organic semiconductors that can be used for fluorescence microscopy of living specimens. Here, we report the encapsulation of the bright-red-emitting conjugated polymer, poly[{9,9-dihexyl-2,7-bis(1-cyanovinylene)fluorenylene}-alt-co-{2,5-bis(N,N'-diphenylamino)-1,4-phenylene}] (CN-FO-DPD), and superparamagnetic iron oxide nanoparticles (SPIONs) within poly(styrene-co-maleic anhydride) (PSMA) micelles. The resulting particles exhibited an emission peak at 657 nm, a fluorescence quantum yield of 21%, an average diameter of 65 nm, and a ζ potential of -30 mV. They are taken up by cells, and we describe their use in fluorescence microscopy of living Hela cells and zebrafish embryos and their associated cytotoxicity in HEK, HeLa, and HCE cells.
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Affiliation(s)
- Struan Bourke
- Department
of Physics, King′s College London, London WC2R 2LS, U.K.
| | - Federico Donà
- Randall
Centre for Cell and Molecular Biophysics, Faculty of Life Sciences
and Medicine, King’s College London, London SE1 1UL, U.K.
| | | | | | - Maryna Panamarova
- Randall
Centre for Cell and Molecular Biophysics, Faculty of Life Sciences
and Medicine, King’s College London, London SE1 1UL, U.K.
| | - Eirinn Mackay
- Department
of Cell and Developmental Biology, University
College London, Gower Street, London WC1E
6BT, U.K.
| | - Peter S. Zammit
- Randall
Centre for Cell and Molecular Biophysics, Faculty of Life Sciences
and Medicine, King’s College London, London SE1 1UL, U.K.
| | - Lea Ann Dailey
- Department
of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, Universitätsring 1, 1010 Vienna, Austria
| | - Ulrike S. Eggert
- Randall
Centre for Cell and Molecular Biophysics, Faculty of Life Sciences
and Medicine, King’s College London, London SE1 1UL, U.K.
| | - Klaus Suhling
- Department
of Physics, King′s College London, London WC2R 2LS, U.K.
| | - Mark A. Green
- Department
of Physics, King′s College London, London WC2R 2LS, U.K.
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4
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Moris M, Van Den Eede MP, Koeckelberghs G, Deschaume O, Bartic C, Clays K, Van Cleuvenbergen S, Verbiest T. Solvent Role in the Self-Assembly of Poly(3-alkylthiophene): A Harmonic Light Scattering Study. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02544] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michèle Moris
- Department of Chemistry, Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200D, 3001 Heverlee, Belgium
| | - Marie-Paule Van Den Eede
- Department of Chemistry, Polymer Chemistry and Materials, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Guy Koeckelberghs
- Department of Chemistry, Polymer Chemistry and Materials, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Olivier Deschaume
- Department of Physics and Astronomy, Soft-Matter Physics and Biophysics Section, KU Leuven, Celestijnenlaan 200D, 3001 Heverlee, Belgium
| | - Carmen Bartic
- Department of Physics and Astronomy, Soft-Matter Physics and Biophysics Section, KU Leuven, Celestijnenlaan 200D, 3001 Heverlee, Belgium
| | - Koen Clays
- Department of Chemistry, Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200D, 3001 Heverlee, Belgium
| | - Stijn Van Cleuvenbergen
- Department of Chemistry, Physical Chemistry, KU Leuven−KULAK, Etienne Sabbelaan 53, 8500 Kortrijk, Belgium
| | - Thierry Verbiest
- Department of Chemistry, Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200D, 3001 Heverlee, Belgium
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5
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Sinclair GS, Claridge RCM, Kukor AJ, Hopkins WS, Schipper DJ. N-Oxide S-O chalcogen bonding in conjugated materials. Chem Sci 2021; 12:2304-2312. [PMID: 34163997 PMCID: PMC8179281 DOI: 10.1039/d0sc06583h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 12/17/2020] [Indexed: 11/21/2022] Open
Abstract
Non-covalent bonding interactions, such as chalcogen bonding, can have a substantial effect on the electronic and physical properties of conjugated polymers and is largely dependent on the strength of interaction. Functional groups that are traditionally used to instill chalcogen bonding such as alkoxy or fluorine substituents can demand challenging synthetic effort, as well as have drastic effects on the electronics of a π-system. The incorporation of a N-oxide functionality into bithiazole-containing materials, a synthetically simple transformation, has been entirely overlooked until now. A systematic analysis of the effects of N-oxidation on the electronic and physical properties of bithiazole-containing materials has been undertaken. N-Oxidation has been found to affect the electronic band gap through increase of the HOMO and lowering of the LUMO. Furthermore, exceptionally strong intramolecular S-O chalcogen bonding interactions in the bithiazole core contribute to rigidification of the conjugated system. Computational analysis of this system has shown this N-oxide chalcogen bonding interaction to be significantly stronger than other chalcogen bonding interactions commonly exploited in conjugated materials.
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Affiliation(s)
| | | | - Andrew J Kukor
- Department of Chemistry, University of Waterloo Waterloo Canada
| | - W Scott Hopkins
- Department of Chemistry, University of Waterloo Waterloo Canada
- Waterloo Institute for Nanotechnology Waterloo Canada
| | - Derek J Schipper
- Department of Chemistry, University of Waterloo Waterloo Canada
- Waterloo Institute for Nanotechnology Waterloo Canada
- Institute for Polymer Research Waterloo Canada
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6
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Xu Z, Park KS, Diao Y. What Is the Assembly Pathway of a Conjugated Polymer From Solution to Thin Films? Front Chem 2020; 8:583521. [PMID: 33425847 PMCID: PMC7793723 DOI: 10.3389/fchem.2020.583521] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 11/24/2020] [Indexed: 11/13/2022] Open
Abstract
The hierarchical assembly of conjugated polymers has gained much attention due to its critical role in determining optical/electrical/mechanical properties. The hierarchical morphology encompasses molecular-scale intramolecular conformation (torsion angle, chain folds) and intermolecular ordering (π-π stacking), mesoscale domain size, orientation and connectivity, and macroscale alignment and (para)crystallinity. Such complex morphology in the solid state is fully determined by the polymer assembly pathway in the solution state, which, in turn, is sensitively modulated by molecular structure and processing conditions. However, molecular pictures of polymer assembly pathways remain elusive due to the lack of detailed structural characterizations in the solution state and the lack of understanding on how various factors impact the assembly pathways. In this mini-review, we present possible assembly pathways of conjugated polymers and their characteristics across length scales. Recent advances in understanding and controlling of assembly pathways are highlighted. We also discuss the current gap in our knowledge of assembly pathways, with future perspectives on research needed on this topic.
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Affiliation(s)
- Zhuang Xu
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Kyung Sun Park
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Ying Diao
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, IL, United States
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7
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Elaboration and study of the new copolymer based on vinylcarbazole and Stilbene (VK-Stilbene): Correlation structure-proprieties. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128384] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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8
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van de Laar T, Hooiveld E, Higler R, van der Scheer P, Sprakel J. Gel Trapping Enables Optical Spectroscopy of Single Solvated Conjugated Polymers in Equilibrium. ACS NANO 2019; 13:13185-13195. [PMID: 31647632 PMCID: PMC6887849 DOI: 10.1021/acsnano.9b06164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 10/24/2019] [Indexed: 06/10/2023]
Abstract
Single-molecule studies have provided a wealth of insight into the photophysics of conjugated polymers in the solid and desolvated state. Desolvating conjugated chains, e.g., by their embedding in inert solid matrices, invariably leads to chain collapse and the formation of intermolecular aggregates, which have a pronounced effect on their properties. By contrast, the luminescent properties of individual semiconducting polymers in their solvated and thermodynamic state remain largely unexplored. In this paper, we demonstrate a versatile gel trapping technique that enables the chemistry-free immobilization and interrogation of individual conjugated macromolecules, which retain a fully equilibrated conformation by contrast to conventional solid-state immobilization methods. We show how the technique can be used to record full luminescence spectra of single chains, to evaluate their time-resolved fluorescence, and to probe their photodynamics. Finally, we explore how the photophysics of different conjugated polymers is strongly affected by desolvation and chain collapse.
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9
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Bourke S, Teijeiro Gonzalez Y, Donà F, Panamarova M, Suhling K, Eggert U, Dailey LA, Zammit P, Green MA. Cellular imaging using emission-tuneable conjugated polymer nanoparticles. RSC Adv 2019; 9:37971-37976. [PMID: 35541819 PMCID: PMC9075778 DOI: 10.1039/c9ra07983a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 11/12/2019] [Indexed: 11/21/2022] Open
Abstract
New materials that exhibit tuneable optical properties, notable emission across the visible spectrum, are of immense interest to biologists as they present a broad palette of colours from a single imaging agent that can be utilised in biological detection. Such a flexible system, when combined with the advantages of using conjugated polymer nanoparticles in cell imaging results in a widely useful medical diagnostic system. Here, we describe tuneable emission observed through oxidation of a conjugated polymer followed by the formation of nanoparticles and their subsequent use in cell imaging.
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Affiliation(s)
- Struan Bourke
- Department of Physics, King's College London London WC2R 2LS UK
| | | | - Federico Donà
- Randall Division of Cell and Molecular Biophysics, Faculty of Life Sciences and Medicine, New Hunt's House, King's College London Guy's Campus London SE1 1UL UK
| | - Maryna Panamarova
- Randall Division of Cell and Molecular Biophysics, Faculty of Life Sciences and Medicine, New Hunt's House, King's College London Guy's Campus London SE1 1UL UK
| | - Klaus Suhling
- Department of Physics, King's College London London WC2R 2LS UK
| | - Ulrike Eggert
- Randall Division of Cell and Molecular Biophysics, Faculty of Life Sciences and Medicine, New Hunt's House, King's College London Guy's Campus London SE1 1UL UK
| | - Lea Ann Dailey
- Institute of Pharmacy, Martin-Luther University Halle-Wittenberg Wolfgang-Langenbeck-Strasse 4 06120 Halle (Saale) Germany
| | - Peter Zammit
- Randall Division of Cell and Molecular Biophysics, Faculty of Life Sciences and Medicine, New Hunt's House, King's College London Guy's Campus London SE1 1UL UK
| | - Mark A Green
- Department of Physics, King's College London London WC2R 2LS UK
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10
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Ali N, Bi G, Khesro A, Khan M, Lang J, Samreen A, Wu H. Hybrid AgNPs/MEH-PPV nanocomplexes with enhanced optical absorption and photoluminescence properties. NEW J CHEM 2018. [DOI: 10.1039/c8nj04871a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorescent semiconducting conjugated polymer nanoparticles (CPNs) are promising candidates for enhanced luminescent devices and bioimaging.
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Affiliation(s)
- Nasir Ali
- Department of Physics and State Key Laboratory of Silicon Materials
- Zhejiang University
- Hangzhou
- P. R. China
| | - Gang Bi
- College of Information and Electrical Engineering
- Zhejiang University City College
- Hangzhou
- Zhejiang
- P. R. China
| | - Amir Khesro
- Department of Physics
- Abdul Wali Khan University
- Mardan 23200
- Pakistan
| | - Majid Khan
- Department of Physics
- Abdul Wali Khan University
- Mardan 23200
- Pakistan
| | - Jiawei Lang
- Department of Physics and State Key Laboratory of Silicon Materials
- Zhejiang University
- Hangzhou
- P. R. China
| | - Ayesha Samreen
- Department of Physics
- University of Peshawar
- Peshawar 25120
- Pakistan
| | - Huizhen Wu
- Department of Physics and State Key Laboratory of Silicon Materials
- Zhejiang University
- Hangzhou
- P. R. China
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11
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Lee FL, Barati Farimani A, Gu KL, Yan H, Toney MF, Bao Z, Pande VS. Solution-Phase Conformation and Dynamics of Conjugated Isoindigo-Based Donor-Acceptor Polymer Single Chains. J Phys Chem Lett 2017; 8:5479-5486. [PMID: 29065685 DOI: 10.1021/acs.jpclett.7b02360] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Conjugated polymers are the key material in thin-film organic optoelectronic devices due to the versatility of these molecules combined with their semiconducting properties. A molecular-scale understanding of conjugated polymers is important to the optimization of the thin-film morphology. We examine the solution-phase behavior of conjugated isoindigo-based donor-acceptor polymer single chains of various chain lengths using atomistic molecular dynamics simulations. Our simulations elucidate the transition from a rod-like to a coil-like conformation from an analysis of normal modes and persistence length. In addition, we find another transition based on the solvent environment, contrasting the coil-like conformation in a good solvent with a globule-like conformation in a poor solvent. Overall, our results provide valuable insights into the transition between conformational regimes for conjugated polymers as a function of both the chain length and the solvent environment, which will help to accurately parametrize higher level models.
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Affiliation(s)
- Franklin L Lee
- Department of Chemical Engineering, Stanford University , Stanford, California 94305, United States
| | - Amir Barati Farimani
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Kevin L Gu
- Department of Chemical Engineering, Stanford University , Stanford, California 94305, United States
| | - Hongping Yan
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Michael F Toney
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States
| | - Zhenan Bao
- Department of Chemical Engineering, Stanford University , Stanford, California 94305, United States
| | - Vijay S Pande
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
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12
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Panzer F, Bässler H, Köhler A. Temperature Induced Order-Disorder Transition in Solutions of Conjugated Polymers Probed by Optical Spectroscopy. J Phys Chem Lett 2017; 8:114-125. [PMID: 27966973 DOI: 10.1021/acs.jpclett.6b01641] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The aggregation of π-conjugated materials significantly impacts the photophysics and performance of optoelectronic devices. Nevertheless, little is known about the laws governing aggregate formation of π-conjugated materials from solution. In this Perspective, we compare, discuss, and summarize how aggregates form for three different types of compounds, that is, homopolymers, donor-acceptor type polymers, and low molecular weight compounds. To this end, we employ temperature-dependent optical spectroscopy, which is a simple yet powerful tool to investigate aggregate formation. We show how optical spectra can be analyzed to identify distinct conformational states. We find aggregate formation to proceed the same in all these compounds by a coil-to-globule-like first-order phase transition. Notably, the chain expands before it collapses into a highly ordered dense state. The role of side chains and the impact of changes in environmental polarization are addressed.
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Affiliation(s)
- Fabian Panzer
- Experimental Physics II, ‡Department of Functional Materials, and §Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth , 95540 Bayreuth, Germany
| | - Heinz Bässler
- Experimental Physics II, ‡Department of Functional Materials, and §Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth , 95540 Bayreuth, Germany
| | - Anna Köhler
- Experimental Physics II, ‡Department of Functional Materials, and §Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth , 95540 Bayreuth, Germany
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13
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Aggregation properties of MEH-PPV/PMMA blends in solution and thin film. JOURNAL OF POLYMER RESEARCH 2016. [DOI: 10.1007/s10965-016-1169-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Wang S, Ryan JW, Singh A, Beirne JG, Palomares E, Redmond G. Encapsulation of MEH-PPV:PCBM Hybrids in the Cores of Block Copolymer Micellar Assemblies: Photoinduced Electron Transfer in a Nanoscale Donor-Acceptor System. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:329-337. [PMID: 26653672 DOI: 10.1021/acs.langmuir.5b04053] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The objective of this work is to demonstrate that conjugated polymer:fullerene hybrid nanoparticles encapsulated in the hydrophobic cores of triblock copolymer micelles may successfully act as spatially confined donor-acceptor systems capable of facilitating photoinduced charge carrier separation. To this end, aqueous dispersions of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) nanoparticles were first prepared by solubilization of the polymer in the cores of poly(oxyethylene)-poly(oxypropylene)-poly(oxyethylene) triblock copolymer, Pluronic F-127 micelles. A number of significant optical spectroscopic changes were observed on transfer of the conjugated polymer from a nonaqueous solvent to the aqueous micellar environment. These were primarily attributed to increased interchain interactions due to conjugated polymer chain collapse during encapsulation in the micellar cores. When prepared in buffer solution, the micelles exhibited good long-term collodial stability. When MEH-PPV micelles were blended by the addition of controlled amounts of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM), the observed correspondence of photoluminescence emission quenching, quantum yield decreases, and emission lifetime shortening with increasing PCBM concentration indicated efficient photoinduced donor-to-acceptor charge transfer between MEH-PPV and the fullerenes in the cores of the micelles, an assignment that was confirmed by transient absorption spectroscopic monitoring of carrier photogeneration and recombination.
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Affiliation(s)
- Suxiao Wang
- School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
| | - James William Ryan
- Institute of Chemical Research of Catalonia (ICIQ), Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Amita Singh
- School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
| | - Jason Gerard Beirne
- School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
| | - Emilio Palomares
- Institute of Chemical Research of Catalonia (ICIQ), Avinguda Països Catalans 16, 43007 Tarragona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain
| | - Gareth Redmond
- School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
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15
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Song Y, Zhao J, Ni Y, Li Q. Solution properties of a heteropolysaccharide extracted from pumpkin ( Cucurbita pepo , lady godiva). Carbohydr Polym 2015; 132:221-7. [DOI: 10.1016/j.carbpol.2015.06.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 06/13/2015] [Accepted: 06/20/2015] [Indexed: 11/28/2022]
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16
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Sawada T, Matsumiya K, Serizawa T. Polymer-binding Peptides as Dispersants for the Preparation of Polymer Nanoparticles: Application of Peptides to Structurally Similar Non-target Polymers. CHEM LETT 2015. [DOI: 10.1246/cl.150215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toshiki Sawada
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology
| | - Kisei Matsumiya
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo
| | - Takeshi Serizawa
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology
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17
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Newbloom GM, Hoffmann SM, West AF, Gile MC, Sista P, Cheung HKC, Luscombe CK, Pfaendtner J, Pozzo LD. Solvatochromism and conformational changes in fully dissolved poly(3-alkylthiophene)s. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:458-68. [PMID: 25486225 DOI: 10.1021/la503666x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Absorption spectroscopy is commonly utilized to probe optical properties that can be related, among other things, to the conformation of single, isolated conjugated polymer chains in solution. It is frequently suggested that changes in peak positions of optical spectra result from variations in the stiffness of polymer chains in solution because this modifies the conjugation length. In this work we utilize ultraviolet-visible (UV-vis) spectroscopy, small angle neutron scattering (SANS), and all atom molecular dynamic (AA-MD) simulations to closely probe the relationship between the conformation of single-chains of poly(3-alkylthiophene)s (P3ATs) and their optical properties. SANS results show variations in the radius of gyration and Kuhn length as a function of alkyl chain length, and structure, as well as the solvent environment. Furthermore, both SANS and MD simulations show that dissolved P3HT chains are more rigid in solvents where self-assembly and crystallization are possible. Shifts in P3AT optical properties were also observed for different solvent environments. However, these changes were not correlated to the changes in polymer conformation. Furthermore, changes in optical properties could not be perfectly described by generalized solvent-solute interactions. AA-MD simulations provide new insights into specific polymer-solvent interactions not accounted for in generalized solvatochromic theory. This work highlights the need for experiments and molecular simulations that further inform the specific role of solvent molecules on local polymer conformation and on optical properties.
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Affiliation(s)
- Gregory M Newbloom
- Department of Chemical Engineering, University of Washington , Box 351750, Seattle, Washington 98195-1750, United States
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18
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Tena A, Vazquez-Guilló R, Marcos-Fernández A, Hernández A, Mallavia R. Polymeric films based on blends of 6FDA–6FpDA polyimide plus several copolyfluorenes for CO2 separation. RSC Adv 2015. [DOI: 10.1039/c5ra03809j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Three emitting copolyfluorenes, based on 2,7-(9,9-dihexyl)fluorene and different aryl groups were blended with a polyimide 6FDA–6FpDA to make gas separation membranes. Their intrinsic fluorescence correlates with their permselectivity.
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Affiliation(s)
- A. Tena
- Smap UA-UVA_CSIC
- Universidad de Valladolid
- Facultad de Ciencias
- 47071 Valladolid
- Spain
| | - R. Vazquez-Guilló
- Instituto de Biología Molecular y Celular
- Universidad Miguel Hernández
- Elche
- Spain
| | - A. Marcos-Fernández
- Smap UA-UVA_CSIC
- Universidad de Valladolid
- Facultad de Ciencias
- 47071 Valladolid
- Spain
| | - A. Hernández
- Smap UA-UVA_CSIC
- Universidad de Valladolid
- Facultad de Ciencias
- 47071 Valladolid
- Spain
| | - R. Mallavia
- Instituto de Biología Molecular y Celular
- Universidad Miguel Hernández
- Elche
- Spain
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19
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Chao KP, Biswal SL. Evaporative assembly of MEH-PPV rings using mixed solvents at the air/water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:4236-4242. [PMID: 24684587 DOI: 10.1021/la404865u] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Controlling the morphology of conjugated polymers has recently attracted considerable attention because of their applications in photovoltaic (PV) devices and organic light-emitting diodes (OLEDs). Here, we describe the self-assembly of a common conjugated polymer, poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV), into ringlike structures via solvent evaporation on an air/water interface. The films are monitored using Brewster angle microscopy (BAM) and transferred onto a solid substrate by either the Langmuir-Blodgett (LB) or the Langmuir-Schaefer (LS) method and further characterized by atomic force microscopy (AFM). The morphology of the MEH-PPV thin film at the air/water interface can be controlled by the spreading solvent. By mixing solvents of varying spreading coefficients and evaporation rates, such as chloroform and chlorobenzene, MEH-PPV can be assembled into micrometer-sized ring structures. The optical properties of these MEH-PPV ring structures are also characterized. Lastly, MEH-PPV can be used as a soft template to organize microscale structures of nanoparticles.
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Affiliation(s)
- Kung-Po Chao
- Department of Chemical and Biomolecular Engineering, Rice University , Houston, Texas 77005, United States
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20
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Wu JS, Jheng JF, Chang JY, Lai YY, Wu KY, Wang CL, Hsu CS. Synthesis and morphological studies of a poly(5,6-difluorobenzo-2,1,3-thiadiazole-4,7-diyl-alt-quaterchalcogenophene) copolymer with 7.3% polymer solar cell efficiency. Polym Chem 2014. [DOI: 10.1039/c4py00777h] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A superior PCE of 7.34% was delivered in the inverted P(FBT-alt-Se2Th2) : PC71BM polymer solar cells.
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Affiliation(s)
- Jhong-Sian Wu
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu, Taiwan 30010
| | - Jyun-Fong Jheng
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu, Taiwan 30010
| | - Jen-Yun Chang
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu, Taiwan 30010
| | - Yu-Ying Lai
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu, Taiwan 30010
| | - Kuan-Yi Wu
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu, Taiwan 30010
| | - Chien-Lung Wang
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu, Taiwan 30010
| | - Chain-Shu Hsu
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu, Taiwan 30010
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21
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Morphologically induced polychromism of MEH-PPV nanoparticles prepared using amphiphilic comb-polymer as encapsulation matrix. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2013.10.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Structure and Morphology Control in Thin Films of Conjugated Polymers for an Improved Charge Transport. Polymers (Basel) 2013. [DOI: 10.3390/polym5041272] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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23
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Sogawa H, Shiotsuki M, Hirao T, Haino T, Sanda F. Synthesis of Optically Active Poly(m-phenyleneethynylene–aryleneethynylene)s Bearing Hydroxy Groups and Examination of the Higher Order Structures. Macromolecules 2013. [DOI: 10.1021/ma4017295] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiromitsu Sogawa
- Department of Polymer Chemistry, Graduate
School of Engineering, Kyoto University, Katsura
Campus, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masashi Shiotsuki
- Molecular
Engineering Institute, Kinki University, Kayanomori, Iizuka, Fukuoka 820-8555, Japan
| | - Takehiro Hirao
- Graduate
School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Takeharu Haino
- Graduate
School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Fumio Sanda
- Department
of Chemistry and Materials Engineering, Faculty of Chemistry, Materials
and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan
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24
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Controlling chain organization and photophysical properties of conjugated polymer nanoparticles prepared by reprecipitation method: The effect of initial solvent. J Colloid Interface Sci 2013; 403:58-66. [DOI: 10.1016/j.jcis.2013.04.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 04/10/2013] [Accepted: 04/15/2013] [Indexed: 12/25/2022]
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25
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Khoshkhoo MS, Taromi FA, Kowsari E, Shalamzari EK. Contribution of chromophores with different numbers of repeat units to overall emission of MEH–PPV: An experimental and simulation study. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.05.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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26
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Potai R, Kamphan A, Traiphol R. Conformational change, intrachain aggregation and photophysical properties of regioregular poly(3-octylthiophene) in alkanes. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/polb.23326] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ruttayapon Potai
- Laboratory of Advanced Polymers and Nanomaterials, Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science; Naresuan University; Phitsanulok 65000 Thailand
| | - Anothai Kamphan
- Laboratory of Advanced Polymers and Nanomaterials, Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science; Naresuan University; Phitsanulok 65000 Thailand
| | - Rakchart Traiphol
- Laboratory of Advanced Polymers and Nanomaterials, Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science; Naresuan University; Phitsanulok 65000 Thailand
- NANOTEC-MU Excellence Center on Intelligent Materials and Systems, Faculty of Science; Rama 6 Road Ratchathewi Bangkok 10400 Thailand
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27
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Welch GC, Bakus RC, Teat SJ, Bazan GC. Impact of Regiochemistry and Isoelectronic Bridgehead Substitution on the Molecular Shape and Bulk Organization of Narrow Bandgap Chromophores. J Am Chem Soc 2013; 135:2298-305. [DOI: 10.1021/ja310694t] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Gregory C. Welch
- Center for Polymers and Organic Solids, Departments of Chemistry & Biochemistry and Materials, University of California, Santa Barbara, California 93106, United States
| | - Ronald C. Bakus
- Center for Polymers and Organic Solids, Departments of Chemistry & Biochemistry and Materials, University of California, Santa Barbara, California 93106, United States
| | - Simon J. Teat
- Advanced
Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron
Road, Mail Stop 15-317, Berkeley, California 94720, United States
| | - Guillermo C. Bazan
- Center for Polymers and Organic Solids, Departments of Chemistry & Biochemistry and Materials, University of California, Santa Barbara, California 93106, United States
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28
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Wang H, Liu J, Han Y. Nano-fibrils formation of pBTTT via adding alkylthiol into solutions: Control of morphology and crystalline structure. POLYMER 2013. [DOI: 10.1016/j.polymer.2012.11.073] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Conformational structure and aggregation behavior of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] in toluene/nonane solutions. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.08.048] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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30
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Franco IE, Lorchat P, Lamps JP, Schmutz M, Schröder A, Catala JM, Combet J, Schosseler F. From chain collapse to new structures: spectroscopic properties of poly(3-thiophene acetic acid) upon binding by alkyl trimethylammonium bromide surfactants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:4815-4828. [PMID: 22332777 DOI: 10.1021/la204862u] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The binding of cationic surfactants with varying alkyl chain length to a regiorandom conjugated polyanion, poly(3-thiophene acetic acid) (PTAA), is studied in an aqueous buffer by using absorption and emission spectroscopies, photon correlation spectroscopy, isothermal titration calorimetry, and cryogenic transmission electron microscopy. We study the mixed solutions as a function of composition ratio R of surfactant molecules to monomer units molar concentrations, at low polymer concentration and in a very wide composition range (10(-6) < R < 10(2)) below the critical micellar concentration. Upon surfactant binding, the molecularly dispersed chains first collapse progressively and then form new structures as the mixed aggregates get enriched in surfactant. The collapse leads to a strong decrease of the conjugation length and to a blue shift of the absorption spectra by 30 to 50 nm. The new structures are responsible for a new intense emission band at about 600 nm, red-shifted by nearly 130 nm from the initial emission maximum of the polymer (~472 nm). As the surfactant tail becomes shorter, the blue shift of the absorption spectra and the intensity raise of the new emission are delayed to larger composition ratios while their variations become smoother functions of the surfactant concentration. These particular spectroscopic properties of PTAA seem related to its unique combination of a strongly hydrophobic backbone, a large ratio of contour length to persistence length, and an overall good aqueous solubility. Our results show that such features are well suited to design a colorimetric biosensor at small composition ratio, and a fluorescent biomarker at large composition ratio.
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Affiliation(s)
- I Echavarri Franco
- Institut Charles Sadron, CNRS-University of Strasbourg, Strasbourg, France
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31
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Kong F, Fang W, Yang Y, Qiu T. Effect of interchain interaction on optical properties of poly(p-phenylene vinylene) derivative containing oxadiazole in backbone. J Appl Polym Sci 2011. [DOI: 10.1002/app.34383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Murthy AVR, Goel M, Patil S, Jayakannan M. Probing the Role of Chain Length on the Diffusion Dynamics of π-Conjugated Polymers by Fluorescence Correlation Spectroscopy. J Phys Chem B 2011; 115:10779-88. [DOI: 10.1021/jp203978v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. V. R. Murthy
- Department of Physics and ‡Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
| | - Mahima Goel
- Department of Physics and ‡Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
| | - Shivprasad Patil
- Department of Physics and ‡Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
| | - M. Jayakannan
- Department of Physics and ‡Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
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33
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Bearden SD, Cannon JP, Gold SA. Solvent Effects on Template Wetting Nanofabrication of MEH-PPV Nanotubules. Macromolecules 2011. [DOI: 10.1021/ma101958q] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Steven D. Bearden
- Institute for Micromanufacturing, Louisiana Tech University, Ruston, Louisiana 71272, United States
| | - Joseph P. Cannon
- Institute for Micromanufacturing, Louisiana Tech University, Ruston, Louisiana 71272, United States
| | - Scott A. Gold
- Chemical and Materials Engineering Department, University of Dayton, Dayton, Ohio 45469, United States
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34
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Xu Z, Tsai H, Wang HL, Cotlet M. Solvent polarity effect on chain conformation, film morphology, and optical properties of a water-soluble conjugated polymer. J Phys Chem B 2011; 114:11746-52. [PMID: 20726542 DOI: 10.1021/jp105032y] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The solvent polarity effect on chain conformation, film morphology, and photophysical properties of a nonionic water-soluble conjugated polymer (WSCP), poly[2,5-bis(diethylaminetetraethylene glycol)phenylene vinylene] (DEATG-PPV) is investigated in detail. The combination of stationary absorption and photoluminescence (PL) spectroscopy, time-resolved PL spectroscopy, and fluorescence correlation spectroscopy methods enables us to probe the chain conformation of DEATG-PPV, down to the level of a single chain when working with extremely diluted solutions. The use of correlated atomic force microscopy and confocal fluorescence lifetime imaging microscopy measurements of drop-casted DEATG-PPV films reveals the intrinsic relationship between chain conformation, film morphology, and optical properties. Depending on solvent polarity, DEATG-PPV presents extended, coiled, and collapsed chain conformations in solutions, which lead to distinct morphology and optical properties in solid films. Our work presents a pathway to control and characterize the film morphologies of WSCPs toward the optimal performance of various optoelectronic devices.
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Affiliation(s)
- Zhihua Xu
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA
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35
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Chen CH, Lee SL, Lim TS, Chen CH, Luh TY. Influence of polymer conformations on the aggregation behaviour of alternating dialkylsilylene-[4,4′-divinyl(cyanostilbene)] copolymers. Polym Chem 2011. [DOI: 10.1039/c1py00259g] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Sun S, Salim T, Wong LH, Foo YL, Boey F, Lam YM. A new insight into controlling poly(3-hexylthiophene) nanofiber growth through a mixed-solvent approach for organic photovoltaics applications. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02109a] [Citation(s) in RCA: 133] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Hashim Z, Howes P, Green M. Luminescent quantum-dot-sized conjugated polymernanoparticles—nanoparticle formation in a miniemulsion system. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02935a] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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38
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Traiphol R, Pattanatornchai T, Srikhirin T, Kerdcharoen T, Osotchan T. Effects of steric anthracene moieties and keto defects on photophysics and color stability of poly(9,9-di(2-ethylhexyl)fluorene-stat-anthracene) in different local environments. Macromol Res 2010. [DOI: 10.1007/s13233-010-1201-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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39
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Howes P, Green M, Levitt J, Suhling K, Hughes M. Phospholipid encapsulated semiconducting polymer nanoparticles: their use in cell imaging and protein attachment. J Am Chem Soc 2010; 132:3989-96. [PMID: 20175539 DOI: 10.1021/ja1002179] [Citation(s) in RCA: 161] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Semiconducting polymer nanospheres (SPNs) have been synthesized and encapsulated in phospholipid micelles by a solvent evaporation technique. Four different conjugated polymers were used, yielding aqueous dispersions of nanoparticles which emit across the visible spectrum. The synthesis was simple and easily reproducible, and the resultant nanoparticle solutions exhibited high colloidal stability. As these encapsulated SPNs do not contain any toxic materials and show favorable optical properties, they appear to be a promising imaging agent in biomedical and imaging applications. The SPNs were used in simple fluorescence imaging experiments and showed uptake in SH-SY5Y neuroblastoma and live HeLa cells. Carboxylic acid functionalized SPNs were also synthesized and conjugated to bovine serum albumin (BSA) by carbodiimide-mediated chemistry, a key step in the realization of targeted imaging using conjugated polymers.
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Affiliation(s)
- Philip Howes
- Department of Physics, King's College London, Strand, London WC2R 2LS, UK
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40
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Howes P, Green M. Colloidal and optical stability of PEG-capped and phospholipid-encapsulated semiconducting polymer nanospheres in different aqueous media. Photochem Photobiol Sci 2010; 9:1159-66. [PMID: 20585697 DOI: 10.1039/c0pp00106f] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aqueous dispersions of fluorescent semiconducting polymer nanospheres (SPNs) have been synthesised by two methods; miniemulsion and micellar encapsulation. The colloidal and optical stability of SPNs synthesised by these two methods has been compared in order to assess the potential of these fluorescent nanoparticles for use in biological applications. The SPNs were dispersed in water, phosphate buffer solution (PBS) and bovine serum albumin (BSA). The optical stability was studied by absorption and emission spectroscopy, and the colloidal stability was studied by dynamic light scattering (DLS) over a one month period. The results indicate that the micelle-encapsulated SPNs exhibit favourable optical and colloidal stability, and seem promising for use in biological sciences.
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Affiliation(s)
- Philip Howes
- Department of Physics, King's College London, Strand, London WC2R 2LS, UK
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41
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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: 0.9] [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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42
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Traiphol R, Potai R, Charoenthai N, Srikhirin T, Kerdcharoen T, Osotchan T. Effects of chain conformation and chain length on degree of aggregation in assembled particles of conjugated polymer in solvents-nonsolvent: A spectroscopic study. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/polb.21976] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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43
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Spires JB, Peng H, Williams DE, Soeller C, Travas-Sejdic J. Solvent-induced microstructure changes and consequences for electrochemical activity of redox-active conducting polymers. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.01.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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44
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Ghosh S, Sannigrahi A, Maity S, Jana T. Role of Solvent Protic Character on the Aggregation Behavior of Polybenzimidazole in Solution. J Phys Chem B 2010; 114:3122-32. [DOI: 10.1021/jp910808u] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sandip Ghosh
- School of Chemistry, University of Hyderabad, Hyderabad, India
| | | | | | - Tushar Jana
- School of Chemistry, University of Hyderabad, Hyderabad, India
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45
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Nowacki B, Iamazaki E, Cirpan A, Karasz F, Atvars TD, Akcelrud L. Highly efficient polymer blends from a polyfluorene derivative and PVK for LEDs. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.09.056] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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46
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Green M, Howes P, Berry C, Argyros O, Thanou M. Simple conjugated polymer nanoparticles as biological labels. Proc Math Phys Eng Sci 2009. [DOI: 10.1098/rspa.2009.0181] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The use of nanoparticles in biology, especially in cellular imaging, is extremely promising and offers numerous advantages over existing organic dye systems. There are, however, constraints that need to be addressed before the use of such materials in mainstream clinical applications can be realized. One of the main concerns is the use of metal-containing particles that are potentially toxic or interfere with other diagnostic processes. Here, we present the use of simple conjugated polymer nanoparticles as alternative photostable cellular optical imaging agents.
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Affiliation(s)
- Mark Green
- Department of Physics, King’s College London, The Strand, London WC2R 2LS, UK
| | - Philip Howes
- Department of Physics, King’s College London, The Strand, London WC2R 2LS, UK
| | - Catherine Berry
- Centre for Cell Engineering, University of Glasgow, Joseph Black Building, IBLS, Glasgow G12 8QQ, UK
| | - Orestis Argyros
- Department of Pharmacy, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, UK
- Genetic Therapies Centre, Department of Chemistry, Imperial College London, Flowers Building, London SW7 2AZ, UK
| | - Maya Thanou
- Department of Pharmacy, King’s College London, Franklin-Wilkins Building, Stamford Street, London SE1 9NH, UK
- Genetic Therapies Centre, Department of Chemistry, Imperial College London, Flowers Building, London SW7 2AZ, UK
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47
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Massuyeau F, Duvail JL, Athalin H, Lorcy JM, Lefrant S, Wéry J, Faulques E. Elaboration of conjugated polymer nanowires and nanotubes for tunable photoluminescence properties. NANOTECHNOLOGY 2009; 20:155701. [PMID: 19420553 DOI: 10.1088/0957-4484/20/15/155701] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Prototypal photoluminescent nanofibres of poly-(p-phenylene-vinylene) (PPV) were prepared by the wetting template method in polycarbonate nanoporous membranes with an easy all-in solution polymer precursor route. Both nanowires and nanotubes were obtained by varying the dilution of the polymer precursor in methanol prior to thermal conversion. PPV nanotubes exhibit unique features, such as blue-shifted emission at 2.80 eV, higher quantum yield, and longer fluorescence lifetime with respect to PPV films. These effects are attributed to the cancellation of interchain interactions that are consistent with nanoscale tubular structures formed from weakly interacting and short polymer chain segments. The synthesis of these objects opens up perspectives for tunable photoluminescence properties in the blue spectral range and for biochemical applications.
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Affiliation(s)
- F Massuyeau
- Institut des Matériaux Jean Rouxel, UMR6502 CNRS, University of Nantes, 2 rue de Houssinière, F-44322 Nantes, France
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48
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Collison CJ, Pellizzeri S, Ambrosio F. Spectroscopic Evidence for Interaction of Poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene] Conformers and Single-Walled Carbon Nanotubes in Solvent Dispersions. J Phys Chem B 2009; 113:5809-15. [DOI: 10.1021/jp811241v] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Christopher J. Collison
- Department of Chemistry, Rochester Institute of Technology, College of Science, 84 Lomb Memorial Drive, Rochester, New York 14623-5603
| | - Steven Pellizzeri
- Department of Chemistry, Rochester Institute of Technology, College of Science, 84 Lomb Memorial Drive, Rochester, New York 14623-5603
| | - Filip Ambrosio
- Department of Chemistry, Rochester Institute of Technology, College of Science, 84 Lomb Memorial Drive, Rochester, New York 14623-5603
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49
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Hao XT, Ryan T, Bailey MF, Smith TA. Molar Mass Determination of Water-Soluble Light-Emitting Conjugated Polymers by Fluorescence-Based Analytical Ultracentrifugation. Macromolecules 2009. [DOI: 10.1021/ma802475s] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiao-Tao Hao
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia, and Department of Biochemistry and Molecular Biology and The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Victoria 3010, Australia
| | - Tim Ryan
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia, and Department of Biochemistry and Molecular Biology and The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Victoria 3010, Australia
| | - Michael F. Bailey
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia, and Department of Biochemistry and Molecular Biology and The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Victoria 3010, Australia
| | - Trevor A. Smith
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia, and Department of Biochemistry and Molecular Biology and The Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Victoria 3010, Australia
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50
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Konoshchuk NV, Grebinskaya LN, Pokhodenko VD. Effect of the method of production of the inorganic matrix on the spectral characteristics of hybrid ZnO/MEH-PPV nanocomposites. THEOR EXP CHEM+ 2009. [DOI: 10.1007/s11237-009-9053-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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