Identifying Atomic Scale Structure in Undoped/Doped Semicrystalline P3HT Using Inelastic Neutron Scattering
Abstract
The greatest advantage of organic materials is the ability to synthetically tune desired properties. However, structural heterogeneity often obfuscates the relationship between chemical structure and functional properties. Inelastic neutron scattering (INS) is sensitive to both local structure and chemical environment and provides atomic level details that cannot be obtained through other spectroscopic or diffraction methods. INS data are composed of a density of vibrational states with no selection rules, which means that every structural configuration is equally weighted in the spectrum. This allows the INS spectrum to be quantitatively decomposed into different structural motifs. Here in this paper we present INS measurements of the semiconducting polymer P3HT doped with F4TCNQ supported by density functional theory calculations to identify two dominant families of undoped crystalline structures and one dominant doped structural motif, in spite of considerable heterogeneity. The differences between the undoped and doped structures indicate that P3HT side chains flatten upon doping.
- Authors:
-
[1];
[2];
[3];
[2];
[1];
- Univ. of California, Davis, CA (United States). Dept. of Chemical Engineering
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Dept. of Chemical and Materials Engineering
- Univ. of California, Davis, CA (United States). Dept. of Materials Science and Engineering
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1422530
- Grant/Contract Number:
- AC05-00OR22725; SC0010419
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Macromolecules
- Additional Journal Information:
- Journal Volume: 50; Journal Issue: 6; Journal ID: ISSN 0024-9297
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Harrelson, Thomas F., Cheng, Yongqiang Q., Li, Jun, Jacobs, Ian E., Ramirez-Cuesta, Anibal J., Faller, Roland, and Moulé, Adam J. Identifying Atomic Scale Structure in Undoped/Doped Semicrystalline P3HT Using Inelastic Neutron Scattering. United States: N. p., 2017.
Web. doi:10.1021/acs.macromol.6b02410.
Harrelson, Thomas F., Cheng, Yongqiang Q., Li, Jun, Jacobs, Ian E., Ramirez-Cuesta, Anibal J., Faller, Roland, & Moulé, Adam J. Identifying Atomic Scale Structure in Undoped/Doped Semicrystalline P3HT Using Inelastic Neutron Scattering. United States. https://doi.org/10.1021/acs.macromol.6b02410
Harrelson, Thomas F., Cheng, Yongqiang Q., Li, Jun, Jacobs, Ian E., Ramirez-Cuesta, Anibal J., Faller, Roland, and Moulé, Adam J. Tue .
"Identifying Atomic Scale Structure in Undoped/Doped Semicrystalline P3HT Using Inelastic Neutron Scattering". United States. https://doi.org/10.1021/acs.macromol.6b02410. https://www.osti.gov/servlets/purl/1422530.
@article{osti_1422530,
title = {Identifying Atomic Scale Structure in Undoped/Doped Semicrystalline P3HT Using Inelastic Neutron Scattering},
author = {Harrelson, Thomas F. and Cheng, Yongqiang Q. and Li, Jun and Jacobs, Ian E. and Ramirez-Cuesta, Anibal J. and Faller, Roland and Moulé, Adam J.},
abstractNote = {The greatest advantage of organic materials is the ability to synthetically tune desired properties. However, structural heterogeneity often obfuscates the relationship between chemical structure and functional properties. Inelastic neutron scattering (INS) is sensitive to both local structure and chemical environment and provides atomic level details that cannot be obtained through other spectroscopic or diffraction methods. INS data are composed of a density of vibrational states with no selection rules, which means that every structural configuration is equally weighted in the spectrum. This allows the INS spectrum to be quantitatively decomposed into different structural motifs. Here in this paper we present INS measurements of the semiconducting polymer P3HT doped with F4TCNQ supported by density functional theory calculations to identify two dominant families of undoped crystalline structures and one dominant doped structural motif, in spite of considerable heterogeneity. The differences between the undoped and doped structures indicate that P3HT side chains flatten upon doping.},
doi = {10.1021/acs.macromol.6b02410},
journal = {Macromolecules},
number = 6,
volume = 50,
place = {United States},
year = {Tue Mar 07 00:00:00 EST 2017},
month = {Tue Mar 07 00:00:00 EST 2017}
}
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