Room-Temperature Phosphorescence and Low-Energy Induced Direct Triplet Excitation of Alq 3 Engineered Crystals
© 2020 American Chemical Society. All rights reserved. Crystal engineering is a practical approach for tailoring material properties. This approach has been widely studied for modulating optical and electrical properties of semiconductors. However, the properties of organic molecular crystals are di...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Chemical Society (ACS)
2022
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| Online Access: | https://hdl.handle.net/1721.1/140283 |
| _version_ | 1826208208611442688 |
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| author | Bi, Hai Huo, Chanyuan Song, Xiaoxian Li, Zhiqiang Tang, Haoning Griesse-Nascimento, Sarah Huang, Kai-Chih Cheng, Ji-Xin Nienhaus, Lea Bawendi, Moungi G Lin, Hao-Yu Greg Wang, Yue Saikin, Semion K |
| author_facet | Bi, Hai Huo, Chanyuan Song, Xiaoxian Li, Zhiqiang Tang, Haoning Griesse-Nascimento, Sarah Huang, Kai-Chih Cheng, Ji-Xin Nienhaus, Lea Bawendi, Moungi G Lin, Hao-Yu Greg Wang, Yue Saikin, Semion K |
| author_sort | Bi, Hai |
| collection | MIT |
| description | © 2020 American Chemical Society. All rights reserved. Crystal engineering is a practical approach for tailoring material properties. This approach has been widely studied for modulating optical and electrical properties of semiconductors. However, the properties of organic molecular crystals are difficult to control following a similar engineering route. In this Letter, we demonstrate that engineered crystals of Alq3 and Ir(ppy)3 complexes, which are commonly used in organic light-emitting technologies, possess intriguing functional properties. Specifically, these structures not only process efficient low-energy induced triplet excitation directly from the ground state of Alq3 but also can show strong emission at the Alq3 triplet energy level at room temperatures. We associate these phenomena with local deformations of the host matrix around the guest molecules, which in turn lead to a stronger host-guest triplet-Triplet coupling and spin-orbital mixing. |
| first_indexed | 2024-09-23T14:02:14Z |
| format | Article |
| id | mit-1721.1/140283 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:02:14Z |
| publishDate | 2022 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/1402832022-02-12T03:15:36Z Room-Temperature Phosphorescence and Low-Energy Induced Direct Triplet Excitation of Alq 3 Engineered Crystals Bi, Hai Huo, Chanyuan Song, Xiaoxian Li, Zhiqiang Tang, Haoning Griesse-Nascimento, Sarah Huang, Kai-Chih Cheng, Ji-Xin Nienhaus, Lea Bawendi, Moungi G Lin, Hao-Yu Greg Wang, Yue Saikin, Semion K © 2020 American Chemical Society. All rights reserved. Crystal engineering is a practical approach for tailoring material properties. This approach has been widely studied for modulating optical and electrical properties of semiconductors. However, the properties of organic molecular crystals are difficult to control following a similar engineering route. In this Letter, we demonstrate that engineered crystals of Alq3 and Ir(ppy)3 complexes, which are commonly used in organic light-emitting technologies, possess intriguing functional properties. Specifically, these structures not only process efficient low-energy induced triplet excitation directly from the ground state of Alq3 but also can show strong emission at the Alq3 triplet energy level at room temperatures. We associate these phenomena with local deformations of the host matrix around the guest molecules, which in turn lead to a stronger host-guest triplet-Triplet coupling and spin-orbital mixing. 2022-02-11T16:06:31Z 2022-02-11T16:06:31Z 2020 2022-02-11T15:44:16Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/140283 Bi, Hai, Huo, Chanyuan, Song, Xiaoxian, Li, Zhiqiang, Tang, Haoning et al. 2020. "Room-Temperature Phosphorescence and Low-Energy Induced Direct Triplet Excitation of Alq 3 Engineered Crystals." Journal of Physical Chemistry Letters, 11 (21). en 10.1021/ACS.JPCLETT.0C02416 Journal of Physical Chemistry Letters Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf American Chemical Society (ACS) Other repository |
| spellingShingle | Bi, Hai Huo, Chanyuan Song, Xiaoxian Li, Zhiqiang Tang, Haoning Griesse-Nascimento, Sarah Huang, Kai-Chih Cheng, Ji-Xin Nienhaus, Lea Bawendi, Moungi G Lin, Hao-Yu Greg Wang, Yue Saikin, Semion K Room-Temperature Phosphorescence and Low-Energy Induced Direct Triplet Excitation of Alq 3 Engineered Crystals |
| title | Room-Temperature Phosphorescence and Low-Energy Induced Direct Triplet Excitation of Alq 3 Engineered Crystals |
| title_full | Room-Temperature Phosphorescence and Low-Energy Induced Direct Triplet Excitation of Alq 3 Engineered Crystals |
| title_fullStr | Room-Temperature Phosphorescence and Low-Energy Induced Direct Triplet Excitation of Alq 3 Engineered Crystals |
| title_full_unstemmed | Room-Temperature Phosphorescence and Low-Energy Induced Direct Triplet Excitation of Alq 3 Engineered Crystals |
| title_short | Room-Temperature Phosphorescence and Low-Energy Induced Direct Triplet Excitation of Alq 3 Engineered Crystals |
| title_sort | room temperature phosphorescence and low energy induced direct triplet excitation of alq 3 engineered crystals |
| url | https://hdl.handle.net/1721.1/140283 |
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