51
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52
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Ghosh A, Ghosh S, Jana B, Patra A. Ultrafast Relaxation Processes of Conjugated Polymer Nanoparticles in the Presence of Au Nanoparticles. Chem Asian J 2019; 14:4681-4687. [DOI: 10.1002/asia.201900905] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/02/2019] [Indexed: 11/05/2022]
Affiliation(s)
- Arnab Ghosh
- School of Materials SciencesIndian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
| | - Srijon Ghosh
- School of Materials SciencesIndian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
| | - Bikash Jana
- School of Materials SciencesIndian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
| | - Amitava Patra
- School of Materials SciencesIndian Association for the Cultivation of Science Jadavpur Kolkata 700032 India
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53
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54
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Gu K, Loo Y. The Polymer Physics of Multiscale Charge Transport in Conjugated Systems. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/polb.24873] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kaichen Gu
- Department of Chemical and Biological EngineeringPrinceton University Princeton New Jersey 08544
| | - Yueh‐Lin Loo
- Department of Chemical and Biological EngineeringPrinceton University Princeton New Jersey 08544
- Andlinger Center for Energy and the EnvironmentPrinceton University Princeton New Jersey 08544
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55
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Halsey-Moore C, Jena P, McLeskey JT. Tuning range-separated DFT functionals for modeling the peak absorption of MEH-PPV polymer in various solvents. COMPUT THEOR CHEM 2019. [DOI: 10.1016/j.comptc.2019.112506] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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56
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Worch JC, Prydderch H, Jimaja S, Bexis P, Becker ML, Dove AP. Stereochemical enhancement of polymer properties. Nat Rev Chem 2019. [DOI: 10.1038/s41570-019-0117-z] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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57
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Affiliation(s)
- Jung Yong Kim
- Department of Materials Science and Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea
- School of Chemical Engineering, Jimma Institute of Technology, Jimma University, P.O. Box 378, Jimma, Ethiopia
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58
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Eggimann HJ, Le Roux F, Herz LM. How β-Phase Content Moderates Chain Conjugation and Energy Transfer in Polyfluorene Films. J Phys Chem Lett 2019; 10:1729-1736. [PMID: 30900449 DOI: 10.1021/acs.jpclett.9b00483] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Poly(9,9-dioctylfluorene) (PFO) is a blue-light-emitting polymer exhibiting two distinct phases, namely, the disordered "glassy" phase and a more ordered β-phase. We investigate how a systematic increase in the fraction of β-phase present in PFO films controls chain conformation, photoluminescence quantum efficiency (PLQE), and the resonant energy transfer from the glassy to the β-phase. All films are prepared by the same technique, using paraffin oil as an additive to the spin-coating solution, allowing systematic tuning of the β-phase fraction. The PFO films exhibit high PLQE with values increasing to 0.72 for increasing fractions of β-phase present, with the β-phase chain conformation becoming more planar and including more repeat units. Differences in Förster radii calculated from the overlap of steady-state absorptance and emission spectra and from time-resolved ultrafast photoluminescence transients indicate that exciton diffusion within the glassy phase plays an important role in the energy transfer process.
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Affiliation(s)
- Hannah J Eggimann
- Department of Physics , University of Oxford, Clarendon Laboratory , Parks Road , Oxford OX1 3PU , United Kingdom
| | - Florian Le Roux
- Department of Physics , University of Oxford, Clarendon Laboratory , Parks Road , Oxford OX1 3PU , United Kingdom
| | - Laura M Herz
- Department of Physics , University of Oxford, Clarendon Laboratory , Parks Road , Oxford OX1 3PU , United Kingdom
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59
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Braeken Y, Cheruku S, Seneca S, Smisdom N, Berden L, Kruyfhooft L, Penxten H, Lutsen L, Fron E, Vanderzande D, Ameloot M, Maes W, Ethirajan A. Effect of Branching on the Optical Properties of Poly(p-phenylene ethynylene) Conjugated Polymer Nanoparticles for Bioimaging. ACS Biomater Sci Eng 2019; 5:1967-1977. [DOI: 10.1021/acsbiomaterials.8b01416] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yasmine Braeken
- Institute for Materials Research (IMO-IMOMEC), Design & Synthesis of Organic Semiconductors (DSOS), Hasselt University, Agoralaan Building D, Diepenbeek 3590, Belgium
| | - Srujan Cheruku
- Institute for Materials Research (IMO-IMOMEC), Nanobiophysics and Soft Matter Interfaces (NSI), Hasselt University, Wetenschapspark 1, Diepenbeek 3590, Belgium
| | - Senne Seneca
- Institute for Materials Research (IMO-IMOMEC), Nanobiophysics and Soft Matter Interfaces (NSI), Hasselt University, Wetenschapspark 1, Diepenbeek 3590, Belgium
| | - Nick Smisdom
- Biomedical Research Institute (BIOMED), Hasselt University, Agoralaan Building C, Diepenbeek 3590, Belgium
| | - Laurens Berden
- Institute for Materials Research (IMO-IMOMEC), Design & Synthesis of Organic Semiconductors (DSOS), Hasselt University, Agoralaan Building D, Diepenbeek 3590, Belgium
- Institute for Materials Research (IMO-IMOMEC), Nanobiophysics and Soft Matter Interfaces (NSI), Hasselt University, Wetenschapspark 1, Diepenbeek 3590, Belgium
| | - Louis Kruyfhooft
- Institute for Materials Research (IMO-IMOMEC), Design & Synthesis of Organic Semiconductors (DSOS), Hasselt University, Agoralaan Building D, Diepenbeek 3590, Belgium
- Institute for Materials Research (IMO-IMOMEC), Nanobiophysics and Soft Matter Interfaces (NSI), Hasselt University, Wetenschapspark 1, Diepenbeek 3590, Belgium
| | - Huguette Penxten
- Institute for Materials Research (IMO-IMOMEC), Design & Synthesis of Organic Semiconductors (DSOS), Hasselt University, Agoralaan Building D, Diepenbeek 3590, Belgium
| | - Laurence Lutsen
- Associated Lab IMOMEC, IMEC, Wetenschapspark 1, Diepenbeek 3590, Belgium
| | - Eduard Fron
- Molecular Visualization and Photonics, KU Leuven, Celestijnenlaan 200F, Leuven 3001, Belgium
| | - Dirk Vanderzande
- Institute for Materials Research (IMO-IMOMEC), Design & Synthesis of Organic Semiconductors (DSOS), Hasselt University, Agoralaan Building D, Diepenbeek 3590, Belgium
- Associated Lab IMOMEC, IMEC, Wetenschapspark 1, Diepenbeek 3590, Belgium
| | - Marcel Ameloot
- Biomedical Research Institute (BIOMED), Hasselt University, Agoralaan Building C, Diepenbeek 3590, Belgium
| | - Wouter Maes
- Institute for Materials Research (IMO-IMOMEC), Design & Synthesis of Organic Semiconductors (DSOS), Hasselt University, Agoralaan Building D, Diepenbeek 3590, Belgium
- Associated Lab IMOMEC, IMEC, Wetenschapspark 1, Diepenbeek 3590, Belgium
| | - Anitha Ethirajan
- Institute for Materials Research (IMO-IMOMEC), Nanobiophysics and Soft Matter Interfaces (NSI), Hasselt University, Wetenschapspark 1, Diepenbeek 3590, Belgium
- Associated Lab IMOMEC, IMEC, Wetenschapspark 1, Diepenbeek 3590, Belgium
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60
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Wilhelm P, Vogelsang J, Schönfelder N, Höger S, Lupton JM. Anomalous Linear Dichroism in Bent Chromophores of π-conjugated Polymers: Departure from the Franck-Condon Principle. PHYSICAL REVIEW LETTERS 2019; 122:057402. [PMID: 30821996 DOI: 10.1103/physrevlett.122.057402] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Indexed: 06/09/2023]
Abstract
We examine the influence of bending of π-conjugated chromophores on photoluminescence (PL) by spectrally resolving the depolarization of fluorescence on the single-molecule level. The effect of excited-state mixing mediated by molecular vibrations is manifested in the departure from the usual achromatic linear dichroism of fluorescence, with the polarization anisotropy decreasing in the vibronic progression. Bent chromophores reveal an overall increase in vibronic PL intensity with polarization orthogonal to the molecular long axis. This manifestation of the Renner-Herzberg-Teller (RHT) effect illustrates the breakdown of the Franck-Condon principle in macromolecules used in organic electronics, providing information on the orientation of transition-dipole moments and the origin of spectral broadening. While some of the spectral signatures of the RHT effect appear similar to those of H aggregation in molecular dimers, discrimination between the two phenomena is straightforward since H aggregation does not induce anomalous linear dichroism.
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Affiliation(s)
- P Wilhelm
- Institut für Experimentelle und Angewandte Physik, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
| | - J Vogelsang
- Institut für Experimentelle und Angewandte Physik, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
| | - N Schönfelder
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - S Höger
- Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany
| | - J M Lupton
- Institut für Experimentelle und Angewandte Physik, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany
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61
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Coleone AP, Lascane LG, Batagin-Neto A. Polypyrrole derivatives for optoelectronic applications: a DFT study on the influence of side groups. Phys Chem Chem Phys 2019; 21:17729-17739. [PMID: 31367712 DOI: 10.1039/c9cp02638j] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Conjugated organic polymers have been considered interesting materials for various technological applications, mainly due to their unique optoelectronic properties and the variety of methods employed in their synthesis. In this context, polypyrrole (PPy) derivatives have been widely employed. The great versatility of synthesis of this material allows the production of a number of derivatives with distinct properties, allowing their application in several areas. In this report, aiming to guide the design of compounds with specific features, electronic structure calculations were conducted to evaluate the influence of side groups in the structural, optical and electronic properties of PPy derivatives. The calculations were carried out for oligomeric systems in the framework of density functional theory. Preliminary benchmark studies were conducted by employing two distinct functionals for geometry optimization and evaluation of optoelectronic properties. Comparative studies of the bond length alternation, spatial and energetic distribution of the frontier orbitals, electronic gaps, exciton binding energies, optical absorption spectra and electronic density of states were conducted for each derivative and the influence of the side groups was discussed in terms of their electron donation/withdrawing properties. A set of simple rules (linear equations) was proposed for the prediction of optoelectronic properties of PPy derivatives. In particular, the results have shown that simple Hammett parameters of side groups are sufficient to enable the design of improved materials.
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Affiliation(s)
- Alex Pifer Coleone
- São Paulo State University (UNESP), Faculty of Sciences, POSMAT, Campus of Bauru, Bauru, SP, Brazil.
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62
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Ryno SM, Risko C. Deconstructing the behavior of donor–acceptor copolymers in solution & the melt: the case of PTB7. Phys Chem Chem Phys 2019; 21:7802-7813. [DOI: 10.1039/c9cp00777f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular dynamics simulations of the donor–acceptor copolymer PTB7 at near experimental scale reveal structure–dynamics correlations in the condensed phase.
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Affiliation(s)
- Sean M. Ryno
- Department of Chemistry & Center for Applied Energy Research
- University of Kentucky
- Lexington
- USA
| | - Chad Risko
- Department of Chemistry & Center for Applied Energy Research
- University of Kentucky
- Lexington
- USA
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63
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Hashemi D, Ma X, Ansari R, Kim J, Kieffer J. Design principles for the energy level tuning in donor/acceptor conjugated polymers. Phys Chem Chem Phys 2019; 21:789-799. [DOI: 10.1039/c8cp03341b] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Illustration of the charge transfer associated with the development of HOMO and LUMO levels in conjugated polymers and that the electron donating and withdrawing powers depend on the collective of atoms that carry the frontier orbitals involved in the charge transfer process.
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Affiliation(s)
- Daniel Hashemi
- Department of Materials Science and Engineering, University of Michigan
- Ann Arbor
- USA
| | - Xiao Ma
- Department of Materials Science and Engineering, University of Michigan
- Ann Arbor
- USA
| | - Ramin Ansari
- Department of Materials Science and Engineering, University of Michigan
- Ann Arbor
- USA
| | - Jinsang Kim
- Department of Materials Science and Engineering, University of Michigan
- Ann Arbor
- USA
| | - John Kieffer
- Department of Materials Science and Engineering, University of Michigan
- Ann Arbor
- USA
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64
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Yi HL, Hua CC. Peculiar Aggregation Features in Poly(3-hexylthiophene)/Chlorobenzene Solutions. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b02619] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Han-Liou Yi
- Department of Chemical Engineering, National Chung Cheng University, Chiayi 62102, Taiwan
| | - Chi-Chung Hua
- Department of Chemical Engineering, National Chung Cheng University, Chiayi 62102, Taiwan
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65
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Dey A, Kabra D. Role of Bimolecular Exciton Kinetics in Controlling the Efficiency of Organic Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:38287-38293. [PMID: 30298717 DOI: 10.1021/acsami.8b10559] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Here, we have carried out a spectroscopic investigation on the operational organic light-emitting diodes (OLEDs) to determine the role of emission layer thickness on the optoelectronic performance of OLEDs based on a poly(9,9-dioctylfluorene- alt-benzothiadiazole) (F8BT) copolymer system. Our study shows that delayed fluorescence (DF) via triplet-triplet annihilation (TTA) contributes significantly to boost the OLED efficiency through its fractional contribution. Interestingly, we note that DF contribution varies as a function of the emissive layer thickness. From the time-resolved electroluminescence (TREL) and triplet absorption (under electrical excitation) studies, we have seen that the emissive layer thickness controls triplet exciton generation and decay processes. From TREL, we have also shown that singlet-triplet annihilation (STA) is the dominant fluorescence quenching mechanism in bulk of the emissive layer, whereas thinner devices have significant exciton quenching at the interface of the injection layer/F8BT. The strength of STA differs in thin versus thick samples, which has been correlated with the spectral & spatial overlap integral of singlet and triplet states. Hence, STA strength and triplet population density are critical parameters for an explanation of high efficiency in unusually thick F8BT OLEDs.
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Affiliation(s)
- Amrita Dey
- Department of Physics , Indian Institute of Technology Bombay , Powai, Mumbai 400076 , India
| | - Dinesh Kabra
- Department of Physics , Indian Institute of Technology Bombay , Powai, Mumbai 400076 , India
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66
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Kim JY. Order–Disorder Phase Equilibria of Regioregular Poly(3-hexylthiophene-2,5-diyl) Solution. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01498] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jung Yong Kim
- Department of Materials Science and Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea
- School of Chemical Engineering, Jimma Institute of Technology, Jimma University, P.O. Box 378, Jimma, Ethiopia
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67
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Datko BD, Livshits MY, Zhang Z, Portlock D, Qin Y, Rack JJ, Grey JK. Unravelling the enigma of ultrafast excited state relaxation in non-emissive aggregating conjugated polymers. Phys Chem Chem Phys 2018; 20:22159-22167. [PMID: 30116824 DOI: 10.1039/c8cp04061c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigate a class of non-emissive conjugated polymers with very short excited state lifetimes believed to undergo singlet fission and relaxation to mid-gap forbidden excited states. Poly(3-decylthieneylenvinylene) (P3DTV) and its heavy atom analog, poly(3-decylseleneylenvinylene) (P3DSV), are strongly aggregating conjugated polymers that experience large excited state displacements along multiple vibrational modes. We demonstrate this Franck-Condon vibrational activity effectively disperses excitation energy into multiple non-radiative channels that can be explained using a simple, two-state potential energy surface model. Resonance Raman spectroscopy is sensitive to early Franck-Condon vibrational activity and we observe rich harmonic progressions involving multiple high frequency CC backbone symmetric stretching motions (∼1000-1600 cm-1) in both systems reflecting mode-specific excited state geometrical displacements. Transient absorption spectra confirm that efficient non-radiative processes dominate excited state relaxation dynamics which are confined to π-stacked aggregated chains. Surprisingly, we found little influence of the heteroatom consistent with efficient vibrational energy dissipation. Our results highlight the importance of aggregation and multi-dimensional Franck-Condon vibrational dynamics on the ability to harvest excitons, which are not usually considered in materials design and optimization schemes.
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Affiliation(s)
- Benjamin D Datko
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM 87131, USA.
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68
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Baek P, Mata JP, Sokolova A, Nelson A, Aydemir N, Shahlori R, McGillivray DJ, Barker D, Travas-Sejdic J. Chain shape and thin film behaviour of poly(thiophene)-graft-poly(acrylate urethane). SOFT MATTER 2018; 14:6875-6882. [PMID: 30083686 DOI: 10.1039/c8sm00777b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Electronic graft copolymers with conjugated polymer backbones are emerging as promising materials for various organic electronics. These materials combine the advantages of organic electronic materials, such as molecular tunability of opto-electronic and electrochemical properties, with solution processability and other 'designer' physical and mechanical properties imparted through the addition of grafted polymer side chains. Future development of such materials with complex molecular architecture requires a better understanding of the effect of molecular parameters, such as side chain length, on the structure and, in turn, on the electronic properties. In this study, poly(thiophene)-graft-poly(acrylate urethane) (PTh-g-PAU) was examined as a model system and we investigate the effect of side chain length on the overall shape and size in solution. Furthermore, the changes in the swelling behaviour of the graft copolymer thin films help in understanding their electrochemical redox properties.
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Affiliation(s)
- Paul Baek
- Polymer Electronics Research Centre, School of Chemical Sciences, University of Auckland, Auckland 1010, New Zealand. and The MacDiarmid Institute of Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
| | - Jitendra P Mata
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organization, NSW 2234, Australia
| | - Anna Sokolova
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organization, NSW 2234, Australia
| | - Andrew Nelson
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organization, NSW 2234, Australia
| | - Nihan Aydemir
- Polymer Electronics Research Centre, School of Chemical Sciences, University of Auckland, Auckland 1010, New Zealand. and The MacDiarmid Institute of Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
| | - Rayomand Shahlori
- Polymer Electronics Research Centre, School of Chemical Sciences, University of Auckland, Auckland 1010, New Zealand. and The MacDiarmid Institute of Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
| | - Duncan J McGillivray
- Polymer Electronics Research Centre, School of Chemical Sciences, University of Auckland, Auckland 1010, New Zealand. and The MacDiarmid Institute of Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
| | - David Barker
- Polymer Electronics Research Centre, School of Chemical Sciences, University of Auckland, Auckland 1010, New Zealand.
| | - Jadranka Travas-Sejdic
- Polymer Electronics Research Centre, School of Chemical Sciences, University of Auckland, Auckland 1010, New Zealand. and The MacDiarmid Institute of Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
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69
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Roldao JC, Batagin-Neto A, Lavarda FC, Sato F. Effects of Mechanical Stretching on the Properties of Conjugated Polymers: Case Study for MEH-PPV and P3HT Oligomers. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/polb.24731] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Juan Carlos Roldao
- PGF - Programa de Pós-Graduação em Física; UFJF - Univ Federal de Juiz de Fora; Juiz de Fora Minas Gerais Brazil
| | - Augusto Batagin-Neto
- Universidade Estadual Paulista (UNESP), Câmpus Experimental de Itapeva; Itapeva, SP Brazil
| | | | - Fernando Sato
- DF, UFJF - Univ Federal de Juiz de Fora; Rua José Lourenço Kelmer, S/N - Martelos, 36036-330 Juiz de Fora Minas Gerais Brazil
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70
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Size-dependent properties of functional PPV-based conjugated polymer nanoparticles for bioimaging. Colloids Surf B Biointerfaces 2018; 169:494-501. [DOI: 10.1016/j.colsurfb.2018.05.055] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Revised: 05/18/2018] [Accepted: 05/23/2018] [Indexed: 12/19/2022]
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71
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Gong ZH, Tang ZF, Cao JS, Wu J. Optimal initialization of a quantum system for an efficient coherent energy transfer. CHINESE J CHEM PHYS 2018. [DOI: 10.1063/1674-0068/31/cjcp1804068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Zhi-hao Gong
- Department of Physics, Zhejiang University, Hangzhou 310027, China
| | - Zhou-fei Tang
- Department of Physics, Zhejiang University, Hangzhou 310027, China
| | - Jian-shu Cao
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Jianlan Wu
- Department of Physics, Zhejiang University, Hangzhou 310027, China
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72
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Nandajan PC, Kim HJ, Casado S, Park SY, Gierschner J. Insight into Water-Soluble Highly Fluorescent Low-Dimensional Host-Guest Supramolecular Polymers: Structure and Energy-Transfer Dynamics Revealed by Polarized Fluorescence Spectroscopy. J Phys Chem Lett 2018; 9:3870-3877. [PMID: 29939753 DOI: 10.1021/acs.jpclett.8b01562] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Water-soluble, highly fluorescent host-guest chromophore-cucurbit[8]uril supramolecular polymer bundles are investigated by polarized time-resolved photoluminescence spectroscopy, structural methods, and quantum chemistry to fully reveal structural organization and heterogeneity but, in particular, energy-transfer dynamics, being of crucial importance for the design of supramolecular artificial light-harvesting systems.
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Affiliation(s)
- Paramjyothi C Nandajan
- Madrid Institute for Advanced Studies , IMDEA Nanoscience , Calle Faraday 9, Campus Cantoblanco , 28049 Madrid , Spain
| | - Hyeong-Ju Kim
- Center for Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering , Seoul National University , ENG 445, Seoul 151-744 , Korea
| | - Santiago Casado
- Madrid Institute for Advanced Studies , IMDEA Nanoscience , Calle Faraday 9, Campus Cantoblanco , 28049 Madrid , Spain
| | - Soo Young Park
- Center for Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering , Seoul National University , ENG 445, Seoul 151-744 , Korea
| | - Johannes Gierschner
- Madrid Institute for Advanced Studies , IMDEA Nanoscience , Calle Faraday 9, Campus Cantoblanco , 28049 Madrid , Spain
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73
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Di Maria F, Lodola F, Zucchetti E, Benfenati F, Lanzani G. The evolution of artificial light actuators in living systems: from planar to nanostructured interfaces. Chem Soc Rev 2018; 47:4757-4780. [PMID: 29663003 DOI: 10.1039/c7cs00860k] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Artificially enhancing light sensitivity in living cells allows control of neuronal paths or vital functions avoiding the wiring associated with the use of stimulation electrodes. Many possible strategies can be adopted for reaching this goal, including the direct photoexcitation of biological matter, the genetic modification of cells or the use of opto-bio interfaces. In this review we describe different light actuators based on both inorganic and organic semiconductors, from planar abiotic/biotic interfaces to nanoparticles, that allow transduction of a light signal into a signal which in turn affects the biological activity of the hosting system. In particular, we will focus on the application of thiophene-based materials which, thanks to their unique chemical-physical properties, geometrical adaptability, great biocompatibility and stability, have allowed the development of a new generation of fully organic light actuators for in vivo applications.
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74
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Determining influential descriptors for polymer chain conformation based on empirical force-fields and molecular dynamics simulations. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.05.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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75
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Urbano L, Clifton L, Ku HK, Kendall-Troughton H, Vandera KKA, Matarese BFE, Abelha T, Li P, Desai T, Dreiss CA, Barker RD, Green MA, Dailey LA, Harvey RD. Influence of the Surfactant Structure on Photoluminescent π-Conjugated Polymer Nanoparticles: Interfacial Properties and Protein Binding. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:6125-6137. [PMID: 29726688 DOI: 10.1021/acs.langmuir.8b00561] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
π-Conjugated polymer nanoparticles (CPNs) are under investigation as photoluminescent agents for diagnostics and bioimaging. To determine whether the choice of surfactant can improve CPN properties and prevent protein adsorption, five nonionic polyethylene glycol alkyl ether surfactants were used to produce CPNs from three representative π-conjugated polymers. The surfactant structure did not influence size or yield, which was dependent on the nature of the conjugated polymer. Hydrophobic interaction chromatography, contact angle, quartz crystal microbalance, and neutron reflectivity studies were used to assess the affinity of the surfactant to the conjugated polymer surface and indicated that all surfactants were displaced by the addition of a model serum protein. In summary, CPN preparation methods which rely on surface coating of a conjugated polymer core with amphiphilic surfactants may produce systems with good yields and colloidal stability in vitro, but may be susceptible to significant surface alterations in physiological fluids.
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Affiliation(s)
- Laura Urbano
- School of Cancer & Pharmaceutical Sciences , King's College London , 150 Stamford Street , London SE1 9NH , U.K
| | - Luke Clifton
- ISIS Spallation Neutron Source, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus , Didcot , Oxfordshire OX11 0QX , U.K
| | - Hoi Ki Ku
- School of Cancer & Pharmaceutical Sciences , King's College London , 150 Stamford Street , London SE1 9NH , U.K
| | - Hannah Kendall-Troughton
- School of Cancer & Pharmaceutical Sciences , King's College London , 150 Stamford Street , London SE1 9NH , U.K
| | - Kalliopi-Kelli A Vandera
- School of Cancer & Pharmaceutical Sciences , King's College London , 150 Stamford Street , London SE1 9NH , U.K
| | - Bruno F E Matarese
- Department of Chemistry , Imperial College London , London SW7 2AZ , U.K
| | - Thais Abelha
- School of Cancer & Pharmaceutical Sciences , King's College London , 150 Stamford Street , London SE1 9NH , U.K
| | - Peixun Li
- ISIS Spallation Neutron Source, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus , Didcot , Oxfordshire OX11 0QX , U.K
| | - Tejal Desai
- Department of Bioengineering and Therapeutic Sciences , University of California, San Francisco , San Francisco , California 94158 , United States
| | - Cécile A Dreiss
- School of Cancer & Pharmaceutical Sciences , King's College London , 150 Stamford Street , London SE1 9NH , U.K
| | - Robert D Barker
- School of Physical Sciences , University of Kent , Canterbury , Kent CT2 7NH , U.K
| | - Mark A Green
- Department of Physics , King's College London , Strand Campus , London WC2R 2LS , U.K
| | - Lea Ann Dailey
- Institut für Pharmazeutische Technologie und Biopharmazie , Martin-Luther-Universität Halle-Wittenberg , Halle 06120 , Germany
| | - Richard D Harvey
- Institut für Pharmazeutische Technologie und Biopharmazie , Martin-Luther-Universität Halle-Wittenberg , Halle 06120 , Germany
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76
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Jeng KS, Chu CW, Liu CL, Jean WM, Chen HL, Chen JT. Orientation Preferences of Interchain Stackings for Poly(3-hexylthiophene) Nanowires Prepared Using Template-Based Wetting Methods. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kai-Sheng Jeng
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 30010 Taiwan
| | - Chien-Wei Chu
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 30010 Taiwan
| | - Chien-Liang Liu
- Department of Chemical Engineering; National Tsing Hua University; Hsinchu 30013 Taiwan
| | - Woan-Mei Jean
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 30010 Taiwan
| | - Hsin-Lung Chen
- Department of Chemical Engineering; National Tsing Hua University; Hsinchu 30013 Taiwan
| | - Jiun-Tai Chen
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 30010 Taiwan
- Center for Emergent Functional Matter Science; National Chiao Tung University; Hsinchu 30010 Taiwan
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77
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Ziessel R, Stachelek P, Harriman A, Hedley GJ, Roland T, Ruseckas A, Samuel IDW. Ultrafast Through-Space Electronic Energy Transfer in Molecular Dyads Built around Dynamic Spacer Units. J Phys Chem A 2018; 122:4437-4447. [DOI: 10.1021/acs.jpca.8b02415] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raymond Ziessel
- Molecular Photonics Laboratory, School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Patrycja Stachelek
- Molecular Photonics Laboratory, School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Anthony Harriman
- Molecular Photonics Laboratory, School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Gordon J. Hedley
- Organic Semiconductor Centre, SUPA, School of Physics & Astronomy, Physical Science Building, University of St. Andrews, North Haugh, St Andrews KY16 9SS, United Kingdom
| | - Thomas Roland
- Organic Semiconductor Centre, SUPA, School of Physics & Astronomy, Physical Science Building, University of St. Andrews, North Haugh, St Andrews KY16 9SS, United Kingdom
| | - Arvydas Ruseckas
- Organic Semiconductor Centre, SUPA, School of Physics & Astronomy, Physical Science Building, University of St. Andrews, North Haugh, St Andrews KY16 9SS, United Kingdom
| | - Ifor D. W. Samuel
- Organic Semiconductor Centre, SUPA, School of Physics & Astronomy, Physical Science Building, University of St. Andrews, North Haugh, St Andrews KY16 9SS, United Kingdom
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78
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Lidster BJ, Hirata S, Matsuda S, Yamamoto T, Komanduri V, Kumar DR, Tezuka Y, Vacha M, Turner ML. Macrocyclic poly( p-phenylenevinylene)s by ring expansion metathesis polymerisation and their characterisation by single-molecule spectroscopy. Chem Sci 2018; 9:2934-2941. [PMID: 29732077 PMCID: PMC5915795 DOI: 10.1039/c7sc03945j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 02/12/2018] [Indexed: 12/04/2022] Open
Abstract
Ring expansion metathesis polymerisation (REMP) has proven to be a viable approach to prepare high purity macrocyclic phenylenevinylene polymers.
Ring expansion metathesis polymerisation (REMP) has proven to be a viable approach to prepare high purity cyclic polymers. Macrocyclic polymers with a fully conjugated defect free backbone are of particular interest as these polymers have no end groups that can act as charge traps. In this work soluble macrocyclic poly(p-phenylenevinylene)s (cPPVs) have been prepared directly via the REMP of substituted paracyclophanedienes. Single-molecule spectroscopy of the two topological forms of PPV i.e., linear (lPPV) and cyclic (cPPV) revealed that lPPV exists in an extended conformation whereas the cPPV adopts a restricted ring-like conformation. Despite such large differences in the chain conformation, the spectral properties of the two compounds are unexpectedly very similar, and are dominated by torsional deformations in relatively short conjugated segments.
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Affiliation(s)
- Benjamin John Lidster
- The School of Chemistry , The University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Shuzo Hirata
- Department of Materials Science and Engineering , Tokyo Institute of Technology , Ookayama 2-12-1, Meguro-ku , Tokyo 152-8552 , Japan .
| | - Shoki Matsuda
- Department of Materials Science and Engineering , Tokyo Institute of Technology , Ookayama 2-12-1, Meguro-ku , Tokyo 152-8552 , Japan .
| | - Takuya Yamamoto
- Division of Applied Chemistry , Faculty of Engineering , Hokkaido University , Sapporo , Hokkaido 060-8628 , Japan
| | - Venukrishnan Komanduri
- The School of Chemistry , The University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Dharam Raj Kumar
- The School of Chemistry , The University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Yasuyuki Tezuka
- Department of Materials Science and Engineering , Tokyo Institute of Technology , Ookayama 2-12-1, Meguro-ku , Tokyo 152-8552 , Japan .
| | - Martin Vacha
- Department of Materials Science and Engineering , Tokyo Institute of Technology , Ookayama 2-12-1, Meguro-ku , Tokyo 152-8552 , Japan .
| | - Michael L Turner
- The School of Chemistry , The University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
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79
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Lyu Y, Zeng J, Jiang Y, Zhen X, Wang T, Qiu S, Lou X, Gao M, Pu K. Enhancing Both Biodegradability and Efficacy of Semiconducting Polymer Nanoparticles for Photoacoustic Imaging and Photothermal Therapy. ACS NANO 2018; 12:1801-1810. [PMID: 29385336 DOI: 10.1021/acsnano.7b08616] [Citation(s) in RCA: 229] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Theranostic nanoagents are promising for precision medicine. However, biodegradable nanoagents with the ability for photoacoustic (PA) imaging guided photothermal therapy (PTT) are rare. We herein report the development of biodegradable semiconducting polymer nanoparticles (SPNs) with enhanced PA and PTT efficacy for cancer therapy. The design capitalizes on the enzymatically oxidizable nature of vinylene bonds in conjunction with polymer chemistry to synthesize a biodegradable semiconducting polymer (DPPV) and transform it into water-soluble nanoparticles (SPNV). As compared with its counterpart SPN (SPNT), the presence of vinylene bonds within the polymer backbone also endows SPNV with a significantly enhanced mass absorption coefficient (1.3-fold) and photothermal conversion efficacy (2.4-fold). As such, SPNV provides the PA signals and the photothermal maximum temperature higher than SPNT, allowing detection and photothermal ablation of tumors in living mice in a more sensitive and effective way. Our study thus reveals a general molecular design to enhance the biodegradability of optically active polymer nanoparticles while dramatically elevating their imaging and therapeutic capabilities.
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Affiliation(s)
- Yan Lyu
- School of Chemical and Biomedical Engineering, Nanyang Technological University , Singapore 637457
| | - Jianfeng Zeng
- Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Suzhou 215123, P. R. China
| | - Yuyan Jiang
- School of Chemical and Biomedical Engineering, Nanyang Technological University , Singapore 637457
| | - Xu Zhen
- School of Chemical and Biomedical Engineering, Nanyang Technological University , Singapore 637457
| | - Ting Wang
- Department of Radiology, The People's Liberation Army General Hospital , No. 28 Fuxing Road, Beijing 100853, China
| | - Shanshan Qiu
- Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Suzhou 215123, P. R. China
| | - Xin Lou
- Department of Radiology, The People's Liberation Army General Hospital , No. 28 Fuxing Road, Beijing 100853, China
| | - Mingyuan Gao
- Center for Molecular Imaging and Nuclear Medicine, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Suzhou 215123, P. R. China
| | - Kanyi Pu
- School of Chemical and Biomedical Engineering, Nanyang Technological University , Singapore 637457
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80
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van de Laar T, Schuurman H, van der Scheer P, Maarten van Doorn J, van der Gucht J, Sprakel J. Light from Within: Sensing Weak Strains and FemtoNewton Forces in Single Molecules. Chem 2018. [DOI: 10.1016/j.chempr.2017.12.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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81
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Fast switching electrochromic nanocomposite based on Poly(pyridinium salt) and multiwalled carbon nanotubes. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.11.045] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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82
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Morgan B, Rinehart SJ, Dadmun MD. Monitoring the Effects of Illumination on the Structure of Conjugated Polymer Gels Using Neutron Scattering. J Vis Exp 2017. [PMID: 29286411 DOI: 10.3791/56163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
We demonstrate a protocol to effectively monitor the gelation process of a high concentration solution of conjugated polymer both in the presence and absence of white light exposure. By instituting a controlled temperature ramp, the gelation of these materials can be precisely monitored as they proceed through this structural evolution, which effectively mirrors the conditions experienced during the solution deposition phase of organic electronic device fabrication. Using small angle neutron scattering (SANS) and ultra-small angle neutron scattering (USANS) along with appropriate fitting protocols we quantify the evolution of select structural parameters throughout this process. Thorough analysis indicates that continued light exposure throughout the gelation process significantly alters the structure of the ultimately formed gel. Specifically, the aggregation process of poly(3-hexylthiophene-2,5-diyl) (P3HT) nano-scale aggregates is negatively affected by the presence of illumination, ultimately resulting in the retardation of growth in conjugated polymer microstructures and the formation of smaller scale macro-aggregate clusters.
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Affiliation(s)
- Brian Morgan
- Department of Chemistry, University of Tennessee, Knoxville
| | | | - Mark D Dadmun
- Department of Chemistry, University of Tennessee, Knoxville; Chemical Sciences Division, Oak Ridge National Laboratory;
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83
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Otero TF, Beaumont S. The cooperative actuation of multistep electrochemical molecular machines in polypyrrole films senses the imposed energetic conditions: Influence of the potential scan rate. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.11.186] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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84
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Affiliation(s)
- Zhen-Gang Wang
- Division of Chemistry and
Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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85
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Datko BD, Thomas AK, Fei Z, Heeney M, Grey JK. Effect of a heavy heteroatom on triplet formation and interactions in single conjugated polymer molecules and aggregates. Phys Chem Chem Phys 2017; 19:28239-28248. [PMID: 29027556 DOI: 10.1039/c7cp05476a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Triplet formation and interactions with emissive singlet excitons are investigated in poly(3-hexylselenophene) (P3HS) using single molecule spectroscopy. P3HS is a heavy atom analog of the more commonly studied poly(3-hexylthiophene) (P3HT), a benchmark polymer for solar cells. P3HS tends to aggregate strongly which necessitates dilution to ultra-low levels within a solid inert host in order to resolve photophysical responses of single chains. Fluorescence excitation intensity modulation is performed on isolated P3HS chains using a sequence of rectangular pulses of varying intensities to probe the presence of spin-forbidden triplet excitons. Triplet population dynamics originating from singlet-triplet and triplet-triplet interactions appear as quenching of the initial fluorescence intensity to steady-state levels on characteristic time scales of ∼1-10 μs. Over 80% of all molecules studied display significant fluorescence intensity modulation (quenching depths >50%) indicative of efficient intersystem crossing and large triplet occupancies. Because triplets are highly localized and singlet-triplet and triplet-triplet annihilation rate constants are comparable to those of intersystem crossing, multiple triplets are present at any given time on single P3HS chains. Triplet lifetimes were estimated to be ∼4 μs (upper limit) determined from recovery to the ground electronic singlet state in the absence of light and, surprisingly, triplets vanish at the onset of P3HS aggregation. This result was unexpected since P3HS triplet formation takes place on time scales <30 ps making this process competitive with most accessible non-radiative deactivation pathways.
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Affiliation(s)
- Benjamin D Datko
- Department of Chemistry, University of New Mexico, MSC03 2060, Albuquerque, NM 87131, USA.
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86
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D'Olieslaeger L, Braeken Y, Cheruku S, Smits J, Ameloot M, Vanderzande D, Maes W, Ethirajan A. Tuning the optical properties of poly(p-phenylene ethynylene) nanoparticles as bio-imaging probes by side chain functionalization. J Colloid Interface Sci 2017; 504:527-537. [DOI: 10.1016/j.jcis.2017.05.072] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 05/09/2017] [Accepted: 05/21/2017] [Indexed: 12/01/2022]
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87
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Caron E, Wolf MO. Soluble Oligo- and Polythienyl Sulfides and Sulfones: Synthesis and Photophysics. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01384] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Elise Caron
- Department of Chemistry,
2036 Main Mall, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Michael O. Wolf
- Department of Chemistry,
2036 Main Mall, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
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88
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Multifunctional polymeric micelles loaded with doxorubicin and poly(dithienyl-diketopyrrolopyrrole) for near-infrared light-controlled chemo-phototherapy of cancer cells. Colloids Surf B Biointerfaces 2017. [DOI: 10.1016/j.colsurfb.2017.05.080] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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89
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Aziz F, Bakar NA, Bashir S, Alhummiany H, Bawazeer T, Alsenany N, Mahmoud A, Supangat A, Sulaiman K. Effective transformation of PCDTBT nanorods into nanotubes by polymer melts wetting approach. JOURNAL OF SAUDI CHEMICAL SOCIETY 2017. [DOI: 10.1016/j.jscs.2017.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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90
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Zhao YJ, Miao K, Zhu Z, Fan LJ. Fluorescence Quenching of a Conjugated Polymer by Synergistic Amine-Carboxylic Acid and π-π Interactions for Selective Detection of Aromatic Amines in Aqueous Solution. ACS Sens 2017; 2:842-847. [PMID: 28723124 DOI: 10.1021/acssensors.7b00245] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fluorescence sensing of amine in aqueous solution is challenging. The various basicity and chemical structures of amines may lead to poor selectivity in aqueous solution, and selective fluorescence detection of primary aromatic amine is rarely reported. This paper presents design and synthesis of a fluorescent conjugated polymer for rapid and selective sensing of aromatic amines in aqueous solution. The fluorescent conjugated polymer, poly[fluorenyl-alt-p-phenyleneethynylene] with pendant carboxylic acid groups and long alky chains, is synthesized via palladium-catalyzed Sonogashira coupling reaction. The fluorescence of the polymer is selectively quenched by the aromatic amines in aqueous solution, whereas the aliphatic amines enhance the fluorescence of the polymer. The high selectivity to the aromatic amines, particularly to the environmentally important p-phenylenediamine, likely originates from the amplified π-π fluorescence quenching synergized by amine and carboxylic acid interaction. Our results demonstrate an effective material design strategy that may be extended to fluorescence sensing of other aromatic compounds.
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Affiliation(s)
- Yi-Jia Zhao
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design
and Application, Department of Polymer Science and Engineering, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Kesong Miao
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design
and Application, Department of Polymer Science and Engineering, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Zhengtao Zhu
- Department
of Chemistry and Applied Biological Sciences, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, United States
| | - Li-Juan Fan
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design
and Application, Department of Polymer Science and Engineering, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
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91
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Wu EC, Stubbs RE, Peteanu LA, Jemison R, McCullough RD, Wildeman J. Detection of Ultralow Concentrations of Non-emissive Conjugated Polymer Aggregates via Fluorescence Correlation Spectroscopy. J Phys Chem B 2017; 121:5413-5421. [DOI: 10.1021/acs.jpcb.7b01918] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eric C. Wu
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Regan E. Stubbs
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Linda A. Peteanu
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Racquel Jemison
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Richard D. McCullough
- Department
of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Jurjen Wildeman
- Zernike Institute of Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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92
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Controlling photophysical properties of ultrasmall conjugated polymer nanoparticles through polymer chain packing. Nat Commun 2017; 8:15256. [PMID: 28508857 PMCID: PMC5440812 DOI: 10.1038/ncomms15256] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 03/10/2017] [Indexed: 12/16/2022] Open
Abstract
Applications of conjugated polymer nanoparticles (Pdots) for imaging and sensing depend on their size, fluorescence brightness and intraparticle energy transfer. The molecular design of conjugated polymers (CPs) has been the main focus of the development of Pdots. Here we demonstrate that proper control of the physical interactions between the chains is as critical as the molecular design. The unique design of twisted CPs and fine-tuning of the reprecipitation conditions allow us to fabricate ultrasmall (3.0–4.5 nm) Pdots with excellent photostability. Extensive photophysical and structural characterization reveals the essential role played by the packing of the polymer chains in the particles in the intraparticle spatial alignment of the emitting sites, which regulate the fluorescence brightness and the intraparticle energy migration efficiency. Our findings enhance understanding of the relationship between chain interactions and the photophysical properties of CP nanomaterials, providing a framework for designing and fabricating functional Pdots for imaging applications. Synthesis of small conjugated polymer nanoparticles (Pdots) with bright and stable fluorescence is an active challenge. Here, the authors introduce a strategy to fabricate ultrasmall Pdots with high fluorescence intensity by using twisted, rather than planar, conjugated polymers, lending new insight into the molecular design of Pdots.
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93
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94
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Zheng L, Ma Y, Xiao L, Zhang F, Wang Y, Yang H. Water-Soluble Polymeric Interfacial Material for Planar Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:14129-14135. [PMID: 28368575 DOI: 10.1021/acsami.7b00576] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Interfacial materials play a critical role in photoelectric conversion properties as well as the anomalous hysteresis phenomenon of the perovskite solar cells (PSCs). In this article, a water-soluble polythiophene PTEBS was employed as a cathode interfacial material for PSCs. Efficient energy level aligning and improved film morphology were obtained due to an ultrathin coating of PTEBS. Better ohmic contact between the perovskite layer and the cathode also benefits the charge transport and extraction of the device. Moreover, less charge accumulation at the interface weakens the polarization of the perovskite resulting in a relatively quick response of the modified device. The ITO/PTEBS/CH3NH3PbI3/spiro-MeOTAD/Au cells by an all low-temperature process achieved power conversion efficiencies of up to 15.4% without apparent hysteresis effect. Consequently, the utilization of this water-soluble polythiophene is a practical approach for the fabrication of highly efficient, large-area, and low-cost PSCs and compatible with low-temperature solution process, roll-to-roll manufacture, and flexible application.
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Affiliation(s)
- Lingling Zheng
- School of Energy Research, Xiang'an Campus, Xiamen University , Xiamen 361100, Fujian China
- Renewable Energy Research Group (RERG), Department of Building Services Engineering, The Hong Kong Polytechnic University , Hong Kong, China
| | - Yingzhuang Ma
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University , Beijing 100871, China
| | - Lixin Xiao
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University , Beijing 100871, China
- Co-Innovation Center for Micro/Nano Optoelectronic Materials and Devices, Chongqing University of Arts and Sciences , Yongchuan Chongqing 402160, P.R.China
| | - Fengyan Zhang
- School of Energy Research, Xiang'an Campus, Xiamen University , Xiamen 361100, Fujian China
| | - Yuanhao Wang
- Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong , New Territories, Hong Kong, China
| | - Hongxing Yang
- Renewable Energy Research Group (RERG), Department of Building Services Engineering, The Hong Kong Polytechnic University , Hong Kong, China
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95
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Morgan B, Dadmun MD. The importance of solvent quality on the modification of conjugated polymer conformation and thermodynamics with illumination. SOFT MATTER 2017; 13:2773-2780. [PMID: 28345084 DOI: 10.1039/c6sm02631a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Device efficiency in key organic electronic devices such as organic photovoltaics, field transistors, and light emitting diodes has long been known to be closely tied to the conformation of the conjugated polymer chains which make up the active layers. Our previous results show that light exposure can have a profound effect on the structure and assembly of these optoelectronic materials in solution. In order to advance our understanding of the role which solvent quality plays in this phenomenon, we have further studied the modulation of these illumination dependent structural changes on the key benchmark conjugated polymers P3HT and MEH-PPV as a function of solvent quality over a wide range of polymer solubilities. Analysis of this data indicates that use of poorer conjugated polymer solvents ultimately results in larger absolute alterations to polymer conformation, denoting the crucial role which solution thermodynamics plays in this generic effect. This discovery opens the door to controlling final device morphology through careful manipulation of solvent composition during solution based device casting techniques, moving our efforts closer to the development of a powerful, non-destructive, and tunable method for light-driven control of polymer conformation in novel light-responsive organic materials.
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Affiliation(s)
- Brian Morgan
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA.
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96
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Damavandi M, Baek P, Pilkington LI, Javed Chaudhary O, Burn P, Travas-Sejdic J, Barker D. Synthesis of grafted poly( p- phenyleneethynylene) via ARGET ATRP: Towards nonaggregating and photoluminescence materials. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.02.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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97
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The role of incident light intensity, wavelength, and exposure time in the modification of conjugated polymer structure in solution. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.02.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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98
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Phipps MJS, Fox T, Tautermann CS, Skylaris CK. Intuitive Density Functional Theory-Based Energy Decomposition Analysis for Protein–Ligand Interactions. J Chem Theory Comput 2017; 13:1837-1850. [DOI: 10.1021/acs.jctc.6b01230] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. J. S. Phipps
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - T. Fox
- Department of Medicinal Chemistry, Boehringer Ingelheim Pharma GmbH & Co. KG, 88397 Biberach, Germany
| | - C. S. Tautermann
- Department of Medicinal Chemistry, Boehringer Ingelheim Pharma GmbH & Co. KG, 88397 Biberach, Germany
| | - C.-K. Skylaris
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
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99
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Wu B, Zhang C, Fan H, Wang H, Jiang J, Wang L, Xu Q, Lu J. The Effect of Annealing Temperature on the Maintenance of the Intermediate Electrical Conductivity State of a Ternary-Polyamide-Based Memory Device. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201600571] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Bin Wu
- College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Chunyu Zhang
- College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Huiru Fan
- College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Hongliang Wang
- College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Jun Jiang
- College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Lihua Wang
- College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Qingfeng Xu
- College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 P. R. China
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100
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An Efficient Violet Amplified Spontaneous Emission (ASE) from a Conjugated Polymer (PFO-co-pX) in Solution. MATERIALS 2017; 10:ma10030265. [PMID: 28772625 PMCID: PMC5503314 DOI: 10.3390/ma10030265] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 02/18/2017] [Accepted: 02/24/2017] [Indexed: 11/17/2022]
Abstract
The optical of conjugated polymer poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(2,5-p-xylene)] also known as [(PFO-co-pX), ADS145UV], dissolved in a few solvents, has been measured. The absorption, emission spectra, and quantum yield have been investigated by using a spectrophotometer and spectrofluorometer, respectively. The properties of Amplified Spontaneous Emission (ASE) of conjugated PFO-co-pX polymer under different conditions such as solvent type, concentration, and pumping energy have been examined by using the tripled frequency of a Nd:YAG laser as a source of pumping. The relation between output energy and pumping energy for the samples with different concentrations in three solvents has been studied. In addition, efficiency and optical gain from the ASE were measured. Additionally, the stability of this polymer as a laser material was investigated. Among the host of conjugated polymer lasers obtained by optical pumping, this conjugated polymer has exhibited only one ASE band under a wide range of concentrations and pump power values. This is most likely due to the steric hindrance by the copolymer segment pX (2,5-p-xylene). This investigation has provided new insights into the excited state dynamics of conjugated polymer materials and has shown that this new conjugated polymer is quite efficient in the violet region.
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