Modulating Emission of Boric Acid into Highly Efficient and Color‐Tunable Afterglow via Dehydration‐Induced Through‐Space Conjugation
Abstract Inorganic boric acid (BA) is generally not considered an efficient afterglow material, and several groups have reported its extremely weak room‐temperature phosphorescence (RTP) in the blue spectral region. It is discovered that heat treatment of BA results in increased afterglow intensity...
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| Format: | Article |
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Wiley
2023-05-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202300139 |
| _version_ | 1827940779770773504 |
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| author | Zhen Zhang Zhenguang Wang Xiao Liu Yu‐e Shi Zhiqiang Li Yanli Zhao |
| author_facet | Zhen Zhang Zhenguang Wang Xiao Liu Yu‐e Shi Zhiqiang Li Yanli Zhao |
| author_sort | Zhen Zhang |
| collection | DOAJ |
| description | Abstract Inorganic boric acid (BA) is generally not considered an efficient afterglow material, and several groups have reported its extremely weak room‐temperature phosphorescence (RTP) in the blue spectral region. It is discovered that heat treatment of BA results in increased afterglow intensity (27‐fold increase) and prolonged emission lifetime (from 0.83 to 1.59 s), attributed to enhanced through‐space conjugation (TSC) of BA. The afterglow intensity of BA can be increased further (≈415 folds) by introducing p‐hydroxybenzoic acid (PHA), which contains a conjugated molecular motif, to further promote the TSC of the BA system. This combination results in the production of afterglow materials with a photoluminescence quantum yield of 83.8% and an emission lifetime of 2.01 s. In addition, a tunable multicolor afterglow in the 420–490 nm range is achieved owing to the enhancement of the RTP and thermally activated delayed fluorescence of PHA, where BA exerts a confinement effect on the guest molecules. Thus, this study demonstrates promising afterglow materials produced from extremely abundant and simple precursor materials for various applications. |
| first_indexed | 2024-03-13T09:27:16Z |
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| id | doaj.art-7663114a5459436f8d1fb8891fda9dfc |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-03-13T09:27:16Z |
| publishDate | 2023-05-01 |
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| spelling | doaj.art-7663114a5459436f8d1fb8891fda9dfc2023-05-26T09:24:00ZengWileyAdvanced Science2198-38442023-05-011015n/an/a10.1002/advs.202300139Modulating Emission of Boric Acid into Highly Efficient and Color‐Tunable Afterglow via Dehydration‐Induced Through‐Space ConjugationZhen Zhang0Zhenguang Wang1Xiao Liu2Yu‐e Shi3Zhiqiang Li4Yanli Zhao5Key Laboratory of Chemical Biology of Hebei Province Key Laboratory of Medicinal Chemistry and Molecular Diagnosis Ministry of Education College of Chemistry and Materials Science Hebei University Baoding 071002 ChinaKey Laboratory of Chemical Biology of Hebei Province Key Laboratory of Medicinal Chemistry and Molecular Diagnosis Ministry of Education College of Chemistry and Materials Science Hebei University Baoding 071002 ChinaTianjin Key Laboratory of Chemical Process Safety School of Chemical Engineering and Technology Hebei University of Technology Guangrong Dao 8, Hongqiao District Tianjin 300130 P. R. ChinaKey Laboratory of Chemical Biology of Hebei Province Key Laboratory of Medicinal Chemistry and Molecular Diagnosis Ministry of Education College of Chemistry and Materials Science Hebei University Baoding 071002 ChinaTianjin Key Laboratory of Chemical Process Safety School of Chemical Engineering and Technology Hebei University of Technology Guangrong Dao 8, Hongqiao District Tianjin 300130 P. R. ChinaSchool of Chemistry, Chemical Engineering and Biotechnology Nanyang Technological University 21 Nanyang Link Singapore 637371 SingaporeAbstract Inorganic boric acid (BA) is generally not considered an efficient afterglow material, and several groups have reported its extremely weak room‐temperature phosphorescence (RTP) in the blue spectral region. It is discovered that heat treatment of BA results in increased afterglow intensity (27‐fold increase) and prolonged emission lifetime (from 0.83 to 1.59 s), attributed to enhanced through‐space conjugation (TSC) of BA. The afterglow intensity of BA can be increased further (≈415 folds) by introducing p‐hydroxybenzoic acid (PHA), which contains a conjugated molecular motif, to further promote the TSC of the BA system. This combination results in the production of afterglow materials with a photoluminescence quantum yield of 83.8% and an emission lifetime of 2.01 s. In addition, a tunable multicolor afterglow in the 420–490 nm range is achieved owing to the enhancement of the RTP and thermally activated delayed fluorescence of PHA, where BA exerts a confinement effect on the guest molecules. Thus, this study demonstrates promising afterglow materials produced from extremely abundant and simple precursor materials for various applications.https://doi.org/10.1002/advs.202300139afterglowboric acidroom‐temperature phosphorescencethermally activated delayed fluorescencethrough‐space conjugation |
| spellingShingle | Zhen Zhang Zhenguang Wang Xiao Liu Yu‐e Shi Zhiqiang Li Yanli Zhao Modulating Emission of Boric Acid into Highly Efficient and Color‐Tunable Afterglow via Dehydration‐Induced Through‐Space Conjugation Advanced Science afterglow boric acid room‐temperature phosphorescence thermally activated delayed fluorescence through‐space conjugation |
| title | Modulating Emission of Boric Acid into Highly Efficient and Color‐Tunable Afterglow via Dehydration‐Induced Through‐Space Conjugation |
| title_full | Modulating Emission of Boric Acid into Highly Efficient and Color‐Tunable Afterglow via Dehydration‐Induced Through‐Space Conjugation |
| title_fullStr | Modulating Emission of Boric Acid into Highly Efficient and Color‐Tunable Afterglow via Dehydration‐Induced Through‐Space Conjugation |
| title_full_unstemmed | Modulating Emission of Boric Acid into Highly Efficient and Color‐Tunable Afterglow via Dehydration‐Induced Through‐Space Conjugation |
| title_short | Modulating Emission of Boric Acid into Highly Efficient and Color‐Tunable Afterglow via Dehydration‐Induced Through‐Space Conjugation |
| title_sort | modulating emission of boric acid into highly efficient and color tunable afterglow via dehydration induced through space conjugation |
| topic | afterglow boric acid room‐temperature phosphorescence thermally activated delayed fluorescence through‐space conjugation |
| url | https://doi.org/10.1002/advs.202300139 |
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