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Sahu H, Li H, Chen L, Rajan AC, Kim C, Stingelin N, Ramprasad R. An Informatics Approach for Designing Conducting Polymers. ACS APPLIED MATERIALS & INTERFACES 2021; 13:53314-53322. [PMID: 34038635 DOI: 10.1021/acsami.1c04017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Doping conjugated polymers, which are potential candidates for the next generation of organic electronics, is an effective strategy for manipulating their electrical conductivity. However, selecting a suitable polymer-dopant combination is exceptionally challenging because of the vastness of the chemical, configurational, and morphological spaces one needs to search. In this work, high-performance surrogate models, trained on available experimentally measured data, are developed to predict the p-type electrical conductivity and are used to screen a large candidate hypothetical data set of more than 800 000 polymer-dopant combinations. Promising candidates are identified for synthesis and device fabrication. Additionally, new design guidelines are extracted that verify and extend knowledge on important molecular fragments that correlate to high conductivity. Conductivity prediction models are also deployed at www.polymergenome.org for broader open-access community use.
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Affiliation(s)
- Harikrishna Sahu
- Department of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Hongmo Li
- Department of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Lihua Chen
- Department of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Arunkumar Chitteth Rajan
- Department of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Chiho Kim
- Department of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Natalie Stingelin
- Department of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Rampi Ramprasad
- Department of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Cadena MJ, Sung SH, Boudouris BW, Reifenberger R, Raman A. Nanoscale Mapping of Dielectric Properties of Nanomaterials from Kilohertz to Megahertz Using Ultrasmall Cantilevers. ACS NANO 2016; 10:4062-4071. [PMID: 26972782 DOI: 10.1021/acsnano.5b06893] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Electrostatic force microscopy (EFM) is often used for nanoscale dielectric spectroscopy, the measurement of local dielectric properties of materials as a function of frequency. However, the frequency range of atomic force microscopy (AFM)-based dielectric spectroscopy has been limited to a few kilohertz by the resonance frequency and noise of soft microcantilevers used for this purpose. Here, we boost the frequency range of local dielectric spectroscopy by 3 orders of magnitude from a few kilohertz to a few megahertz by developing a technique that exploits the high resonance frequency and low thermal noise of ultrasmall cantilevers (USCs). We map the frequency response of the real and imaginary components of the capacitance gradient (∂C(ω)/∂z) by using second-harmonic EFM and a theoretical model, which relates cantilever dynamics to the complex dielectric constant. We demonstrate the method by mapping the nanoscale dielectric spectrum of polymer-based materials for organic electronic devices. Beyond offering a powerful extension to AFM-based dielectric spectroscopy, the approach also allows the identification of electrostatic excitation frequencies which affords high dielectric contrast on nanomaterials.
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Affiliation(s)
- Maria J Cadena
- School of Mechanical Engineering, Purdue University , West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University , West Lafayette, Indiana 47907, United States
| | - Seung Hyun Sung
- School of Chemical Engineering, Purdue University , West Lafayette, Indiana 47907, United States
| | - Bryan W Boudouris
- School of Chemical Engineering, Purdue University , West Lafayette, Indiana 47907, United States
| | - Ronald Reifenberger
- Birck Nanotechnology Center, Purdue University , West Lafayette, Indiana 47907, United States
- Department of Physics, Purdue University , West Lafayette, Indiana 47907, United States
| | - Arvind Raman
- School of Mechanical Engineering, Purdue University , West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University , West Lafayette, Indiana 47907, United States
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Bouguerra N, Růžička A, Ulbricht C, Enengl C, Enengl S, Pokorná V, Výprachtický D, Tordin E, Aitout R, Cimrová V, Egbe DAM. Synthesis and Photophysical and Electroluminescent Properties of Poly(1,4-phenylene-ethynylene)- alt-poly(1,4-phenylene-vinylene)s with Various Dissymmetric Substitution of Alkoxy Side Chains. Macromolecules 2016; 49:455-464. [PMID: 26877550 PMCID: PMC4730230 DOI: 10.1021/acs.macromol.5b02267] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 01/04/2016] [Indexed: 11/28/2022]
Abstract
![]()
The
synthesis and characterization of a set of conjugated polymers,
poly(1,4-phenylene–ethynylene)-alt-poly(1,4-phenylene–vinylene)s
(PPE–PPVs), with a dissymmetrical configuration (partial or
total) of alkoxy side chains is reported. Five new polymers bearing
octyloxy and/or octadecyloxy side chains at the phenylene–ethynylene
and phenylene–vinylene segments, respectively, were obtained.
Two symmetrical substituted polymers were used for comparison. Polymers
with weight-average molecular weight, Mw, up to 430 000 g/mol and degree of polymerization between
17 and 322 were obtained by a Horner–Wadsworth–Emmons
olefination polycondensation reaction of the respective luminophoric
dialdehydes and bisphosphonates. As expected, identical conjugated
backbones in all polymers results in very similar photophysical response
in dilute solution, with high fluorescence quantum yields between
50% and 80%. In contrast, the thin film properties are dependent on
the combinatorial effects of side chain configuration, molecular weight,
and film thickness parameters, which are the basis of the resulting
comparison and discussion.
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Affiliation(s)
- Nassima Bouguerra
- Department of Chemical Engineering, Electrochemistry, Corrosion and Energetic Valorization Laboratory, A. MIRA University, Targa Ouzemmour, 06000 Bejaia, Algeria; Linz Institute for Organic Solar Cells, Physical Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Aleš Růžička
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic
| | - Christoph Ulbricht
- Linz Institute for Organic Solar Cells, Physical Chemistry, Johannes Kepler University Linz , Altenbergerstrasse 69, 4040 Linz, Austria
| | - Christina Enengl
- Linz Institute for Organic Solar Cells, Physical Chemistry, Johannes Kepler University Linz , Altenbergerstrasse 69, 4040 Linz, Austria
| | - Sandra Enengl
- Linz Institute for Organic Solar Cells, Physical Chemistry, Johannes Kepler University Linz , Altenbergerstrasse 69, 4040 Linz, Austria
| | - Veronika Pokorná
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic
| | - Drahomír Výprachtický
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic
| | - Elisa Tordin
- Linz Institute for Organic Solar Cells, Physical Chemistry, Johannes Kepler University Linz , Altenbergerstrasse 69, 4040 Linz, Austria
| | - Razika Aitout
- Department of Chemical Engineering, Electrochemistry, Corrosion and Energetic Valorization Laboratory, A. MIRA University , Targa Ouzemmour, 06000 Bejaia, Algeria
| | - Věra Cimrová
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic
| | - Daniel Ayuk Mbi Egbe
- Linz Institute for Organic Solar Cells, Physical Chemistry, Johannes Kepler University Linz , Altenbergerstrasse 69, 4040 Linz, Austria
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An ultraviolet responsive hybrid solar cell based on titania/poly(3-hexylthiophene). Sci Rep 2013; 3:1283. [PMID: 23412470 PMCID: PMC3573334 DOI: 10.1038/srep01283] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Accepted: 01/25/2013] [Indexed: 11/08/2022] Open
Abstract
Here we present an ultraviolet responsive inorganic-organic hybrid solar cell based on titania/poly(3-hexylthiophene) (TiO(2)/P3HT) heterojuction. In this solar cell, TiO(2) is an ultraviolet light absorber and electronic conductor, P3HT is a hole conductor, the light-to-electrical conversion is realized by the cooperation for these two components. Doping ionic salt in P3HT polymer can improve the photovoltaic performance of the solar cell. Under ultraviolet light irradiation with intensity of 100 mW·cm(-2), the hybrid solar cell doped with 1.0 wt.% lithium iodide achieves an energy conversion efficiency of 1.28%, which is increased by 33.3% compared to that of the hybrid solar cell without lithium iodide doping. Our results open a novel sunlight irradiation field for solar energy utilization, demonstrate the feasibility of ultraviolet responsive solar cells, and provide a new route for enhancing the photovoltaic performance of solar cells.
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