Intervalence charge transfer of Cr3+-Cr3+ aggregation for NIR-II luminescence
Abstract The increasing demand for high-contrast biological imaging, non-destructive testing, and infrared night vision can be addressed by the development of high-performance NIR light-emitting materials. Unlike lanthanide (Ln3+) with sharp-line multiplets and isolated Cr3+ with NIR-I emission, thi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Publishing Group
2023-07-01
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| Series: | Light: Science & Applications |
| Online Access: | https://doi.org/10.1038/s41377-023-01219-x |
| _version_ | 1797769331542589440 |
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| author | Shengqiang Liu Jingxuan Du Zhen Song Chonggeng Ma Quanlin Liu |
| author_facet | Shengqiang Liu Jingxuan Du Zhen Song Chonggeng Ma Quanlin Liu |
| author_sort | Shengqiang Liu |
| collection | DOAJ |
| description | Abstract The increasing demand for high-contrast biological imaging, non-destructive testing, and infrared night vision can be addressed by the development of high-performance NIR light-emitting materials. Unlike lanthanide (Ln3+) with sharp-line multiplets and isolated Cr3+ with NIR-I emission, this study reports the first-ever NIR-II broadband luminescence based on the intervalence charge transfer (IVCT) of Cr3+-Cr3+ aggregation in gallate magentoplumbite. In particular, LaMgGa11O19:0.7Cr3+ exhibits dual-emission (NIR-I, 890 nm and NIR-II, 1200 nm) with a full width at half maximum (FWHM) of 626 nm under 450 nm blue LED excitation. Moreover, this dual-emission exhibits anti-thermal quenching behavior (432% @ 290 K), attributed to the energy transfer among multiple Cr3+ centers. Cryogen absorption spectra, lifetimes decay (2.3 ms), and electron paramagnetic experiments reveal the NIR-II luminescence of the Cr3+-Cr3+ → Cr2+-Cr4+ IVCT transition. The application of LaMgGa11O19:0.7Cr3+ in NIR-II biological imaging as an optical contrast agent, non-destructive testing, and night vision is demonstrated. This work provides new insights into broadband NIR-II luminescence under UV-NIR excitation based on the IVCT of Cr3+-Cr3+ aggregation. |
| first_indexed | 2024-03-12T21:07:27Z |
| format | Article |
| id | doaj.art-d2bd9412cca24f30b88458060ba27f41 |
| institution | Directory Open Access Journal |
| issn | 2047-7538 |
| language | English |
| last_indexed | 2024-03-12T21:07:27Z |
| publishDate | 2023-07-01 |
| publisher | Nature Publishing Group |
| record_format | Article |
| series | Light: Science & Applications |
| spelling | doaj.art-d2bd9412cca24f30b88458060ba27f412023-07-30T11:25:08ZengNature Publishing GroupLight: Science & Applications2047-75382023-07-0112111010.1038/s41377-023-01219-xIntervalence charge transfer of Cr3+-Cr3+ aggregation for NIR-II luminescenceShengqiang Liu0Jingxuan Du1Zhen Song2Chonggeng Ma3Quanlin Liu4Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology BeijingBeijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology BeijingBeijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology BeijingSchool of Optoelectronic Engineering & CQUPT-BUL Innovation Institute, Chongqing University of Posts and TelecommunicationsBeijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology BeijingAbstract The increasing demand for high-contrast biological imaging, non-destructive testing, and infrared night vision can be addressed by the development of high-performance NIR light-emitting materials. Unlike lanthanide (Ln3+) with sharp-line multiplets and isolated Cr3+ with NIR-I emission, this study reports the first-ever NIR-II broadband luminescence based on the intervalence charge transfer (IVCT) of Cr3+-Cr3+ aggregation in gallate magentoplumbite. In particular, LaMgGa11O19:0.7Cr3+ exhibits dual-emission (NIR-I, 890 nm and NIR-II, 1200 nm) with a full width at half maximum (FWHM) of 626 nm under 450 nm blue LED excitation. Moreover, this dual-emission exhibits anti-thermal quenching behavior (432% @ 290 K), attributed to the energy transfer among multiple Cr3+ centers. Cryogen absorption spectra, lifetimes decay (2.3 ms), and electron paramagnetic experiments reveal the NIR-II luminescence of the Cr3+-Cr3+ → Cr2+-Cr4+ IVCT transition. The application of LaMgGa11O19:0.7Cr3+ in NIR-II biological imaging as an optical contrast agent, non-destructive testing, and night vision is demonstrated. This work provides new insights into broadband NIR-II luminescence under UV-NIR excitation based on the IVCT of Cr3+-Cr3+ aggregation.https://doi.org/10.1038/s41377-023-01219-x |
| spellingShingle | Shengqiang Liu Jingxuan Du Zhen Song Chonggeng Ma Quanlin Liu Intervalence charge transfer of Cr3+-Cr3+ aggregation for NIR-II luminescence Light: Science & Applications |
| title | Intervalence charge transfer of Cr3+-Cr3+ aggregation for NIR-II luminescence |
| title_full | Intervalence charge transfer of Cr3+-Cr3+ aggregation for NIR-II luminescence |
| title_fullStr | Intervalence charge transfer of Cr3+-Cr3+ aggregation for NIR-II luminescence |
| title_full_unstemmed | Intervalence charge transfer of Cr3+-Cr3+ aggregation for NIR-II luminescence |
| title_short | Intervalence charge transfer of Cr3+-Cr3+ aggregation for NIR-II luminescence |
| title_sort | intervalence charge transfer of cr3 cr3 aggregation for nir ii luminescence |
| url | https://doi.org/10.1038/s41377-023-01219-x |
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