Insights into Magneto-Optics of Helical Conjugated Polymers
Materials with magneto-optic (MO) properties have enabled critical fiber-optic applications and highly sensitive magnetic field sensors. While traditional MO materials are inorganic in nature, new generations of MO materials based on organic semiconducting polymers could allow increased versatility...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Chemical Society (ACS)
2020
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| Online Access: | https://hdl.handle.net/1721.1/128127 |
| _version_ | 1826205455942156288 |
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| author | Wang, Pan Jeon, Intak Zhou, Lin Peeks, Martin D Savagatrup, Suchol Kooi, Steven E Van Voorhis, Troy Swager, Timothy M |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Wang, Pan Jeon, Intak Zhou, Lin Peeks, Martin D Savagatrup, Suchol Kooi, Steven E Van Voorhis, Troy Swager, Timothy M |
| author_sort | Wang, Pan |
| collection | MIT |
| description | Materials with magneto-optic (MO) properties have enabled critical fiber-optic applications and highly sensitive magnetic field sensors. While traditional MO materials are inorganic in nature, new generations of MO materials based on organic semiconducting polymers could allow increased versatility for device architectures, manufacturing options, and flexible mechanics. However, the origin of MO activity in semiconducting polymers is far from understood. In this paper, we report high MO activity observed in a chiral helical poly-3-(alkylsulfone)thiophene (P3AST), which confirms a new design for the creation of a giant Faraday effect with Verdet constants up to (7.63 ± 0.78) × 104 deg T-1 m-1 at 532 nm. We have determined that the sign of the Verdet constant and its magnitude are related to the helicity of the polymer at the measured wavelength. The Faraday rotation and the helical conformation of P3AST are modulated by thermal annealing, which is further supported by DFT calculations and MD simulations. Our results demonstrate that helical polymers exhibit enhanced Verdet constants and expand the previous design space for polythiophene MO materials that was thought to be limited to highly regular lamellar structures. The structure-property studies herein provide insights for the design of next-generation MO materials based upon semiconducting organic polymers. |
| first_indexed | 2024-09-23T13:13:05Z |
| format | Article |
| id | mit-1721.1/128127 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:13:05Z |
| publishDate | 2020 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/1281272022-10-01T13:50:14Z Insights into Magneto-Optics of Helical Conjugated Polymers Wang, Pan Jeon, Intak Zhou, Lin Peeks, Martin D Savagatrup, Suchol Kooi, Steven E Van Voorhis, Troy Swager, Timothy M Massachusetts Institute of Technology. Department of Chemistry Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies Materials with magneto-optic (MO) properties have enabled critical fiber-optic applications and highly sensitive magnetic field sensors. While traditional MO materials are inorganic in nature, new generations of MO materials based on organic semiconducting polymers could allow increased versatility for device architectures, manufacturing options, and flexible mechanics. However, the origin of MO activity in semiconducting polymers is far from understood. In this paper, we report high MO activity observed in a chiral helical poly-3-(alkylsulfone)thiophene (P3AST), which confirms a new design for the creation of a giant Faraday effect with Verdet constants up to (7.63 ± 0.78) × 104 deg T-1 m-1 at 532 nm. We have determined that the sign of the Verdet constant and its magnitude are related to the helicity of the polymer at the measured wavelength. The Faraday rotation and the helical conformation of P3AST are modulated by thermal annealing, which is further supported by DFT calculations and MD simulations. Our results demonstrate that helical polymers exhibit enhanced Verdet constants and expand the previous design space for polythiophene MO materials that was thought to be limited to highly regular lamellar structures. The structure-property studies herein provide insights for the design of next-generation MO materials based upon semiconducting organic polymers. 2020-10-19T21:20:13Z 2020-10-19T21:20:13Z 2018-05 2018-04 2020-10-07T16:26:24Z Article http://purl.org/eprint/type/JournalArticle 0002-7863 1520-5126 https://hdl.handle.net/1721.1/128127 Wang, Pan et al. "Insights into Magneto-Optics of Helical Conjugated Polymers." Journal of the American Chemical Society 140, 20 (May 2018): 6501–6508 © 2018 American Chemical Society en http://dx.doi.org/10.1021/jacs.8b03777 Journal of the American Chemical Society Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Chemical Society (ACS) Prof. Swager via Ye Li |
| spellingShingle | Wang, Pan Jeon, Intak Zhou, Lin Peeks, Martin D Savagatrup, Suchol Kooi, Steven E Van Voorhis, Troy Swager, Timothy M Insights into Magneto-Optics of Helical Conjugated Polymers |
| title | Insights into Magneto-Optics of Helical Conjugated Polymers |
| title_full | Insights into Magneto-Optics of Helical Conjugated Polymers |
| title_fullStr | Insights into Magneto-Optics of Helical Conjugated Polymers |
| title_full_unstemmed | Insights into Magneto-Optics of Helical Conjugated Polymers |
| title_short | Insights into Magneto-Optics of Helical Conjugated Polymers |
| title_sort | insights into magneto optics of helical conjugated polymers |
| url | https://hdl.handle.net/1721.1/128127 |
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