Spontaneous orientation polarization of flavonoids
Abstract Spontaneous orientation polarization (SOP) is macroscopic electric polarization that is attributed to a constant orientational degree of dipole moments of polar molecules on average. The phenomenon has been found in small molecules like H2O at low temperatures and π-conjugated molecules emp...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-11-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-46834-1 |
| _version_ | 1797630311466532864 |
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| author | Kouki Akaike Takuya Hosokai Yutaro Ono Ryohei Tsuruta Yoichi Yamada |
| author_facet | Kouki Akaike Takuya Hosokai Yutaro Ono Ryohei Tsuruta Yoichi Yamada |
| author_sort | Kouki Akaike |
| collection | DOAJ |
| description | Abstract Spontaneous orientation polarization (SOP) is macroscopic electric polarization that is attributed to a constant orientational degree of dipole moments of polar molecules on average. The phenomenon has been found in small molecules like H2O at low temperatures and π-conjugated molecules employed in organic light-emitting diodes. In this study, we demonstrate that a thin film of baicalein, a flavonoid compound found in natural products, exhibits SOP and resultant giant surface potential (GSP) exceeding 5500 mV at a film thickness of 100 nm. Vacuum-deposition of baicalein under high vacuum results in smooth and amorphous films, which enables the generation of GSP with a slope of 57 mV/nm in air, a value comparable to the representative of an organic semiconductor showing GSP, tris(8-hydroxyquinoline)aluminum(III) (Alq3). We also found the superior photostability of a baicalein film compared to an Alq3 film. These findings highlight the potential of baicalein in new applications to organic electronics. |
| first_indexed | 2024-03-11T11:05:26Z |
| format | Article |
| id | doaj.art-719db7f0effd4026a0f7c9300be09ecd |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-11T11:05:26Z |
| publishDate | 2023-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-719db7f0effd4026a0f7c9300be09ecd2023-11-12T12:13:27ZengNature PortfolioScientific Reports2045-23222023-11-011311910.1038/s41598-023-46834-1Spontaneous orientation polarization of flavonoidsKouki Akaike0Takuya Hosokai1Yutaro Ono2Ryohei Tsuruta3Yoichi Yamada4Nanomaterials Research Institute, National Institute of Advanced Industrial Science and TechnologyNational Metrology Institute of Japan, National Institute of Advanced Industrial Science and TechnologyInstitute of Pure and Applied Sciences, University of TsukubaInstitute of Pure and Applied Sciences, University of TsukubaInstitute of Pure and Applied Sciences, University of TsukubaAbstract Spontaneous orientation polarization (SOP) is macroscopic electric polarization that is attributed to a constant orientational degree of dipole moments of polar molecules on average. The phenomenon has been found in small molecules like H2O at low temperatures and π-conjugated molecules employed in organic light-emitting diodes. In this study, we demonstrate that a thin film of baicalein, a flavonoid compound found in natural products, exhibits SOP and resultant giant surface potential (GSP) exceeding 5500 mV at a film thickness of 100 nm. Vacuum-deposition of baicalein under high vacuum results in smooth and amorphous films, which enables the generation of GSP with a slope of 57 mV/nm in air, a value comparable to the representative of an organic semiconductor showing GSP, tris(8-hydroxyquinoline)aluminum(III) (Alq3). We also found the superior photostability of a baicalein film compared to an Alq3 film. These findings highlight the potential of baicalein in new applications to organic electronics.https://doi.org/10.1038/s41598-023-46834-1 |
| spellingShingle | Kouki Akaike Takuya Hosokai Yutaro Ono Ryohei Tsuruta Yoichi Yamada Spontaneous orientation polarization of flavonoids Scientific Reports |
| title | Spontaneous orientation polarization of flavonoids |
| title_full | Spontaneous orientation polarization of flavonoids |
| title_fullStr | Spontaneous orientation polarization of flavonoids |
| title_full_unstemmed | Spontaneous orientation polarization of flavonoids |
| title_short | Spontaneous orientation polarization of flavonoids |
| title_sort | spontaneous orientation polarization of flavonoids |
| url | https://doi.org/10.1038/s41598-023-46834-1 |
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