Controlling the fluorescence and room-temperature phosphorescence behaviour of carbon nanodots with inorganic crystalline nanocomposites
| العنوان: | Controlling the fluorescence and room-temperature phosphorescence behaviour of carbon nanodots with inorganic crystalline nanocomposites |
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| المؤلفون: | Shuheng Zhang, Mark A. Levenstein, Fiona C. Meldrum, David C. Green, Mark A. Holden, Stanley W. Botchway, Andrew D. Ward, Julia Gala de Pablo, Benjamin R. G. Johnson |
| المصدر: | Nature Communications, Vol 10, Iss 1, Pp 1-13 (2019) Nature Communications |
| بيانات النشر: | Nature Portfolio, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | 0301 basic medicine, Photoluminescence, F300, Science, F100, F200, General Physics and Astronomy, 02 engineering and technology, Photochemistry, 7. Clean energy, General Biochemistry, Genetics and Molecular Biology, Article, 03 medical and health sciences, Phase (matter), lcsh:Science, Multidisciplinary, Nanocomposite, General Chemistry, 021001 nanoscience & nanotechnology, Fluorescence, Afterglow, 030104 developmental biology, Excited state, lcsh:Q, 0210 nano-technology, Phosphorescence, Luminescence |
| الوصف: | There is a significant drive to identify alternative materials that exhibit room temperature phosphorescence for technologies including bio-imaging, photodynamic therapy and organic light-emitting diodes. Ideally, these materials should be non-toxic and cheap, and it will be possible to control their photoluminescent properties. This was achieved here by embedding carbon nanodots within crystalline particles of alkaline earth carbonates, sulphates and oxalates. The resultant nanocomposites are luminescent and exhibit a bright, sub-second lifetime afterglow. Importantly, the excited state lifetimes, and steady-state and afterglow colours can all be systematically controlled by varying the cations and anions in the host inorganic phase, due to the influence of the cation size and material density on emissive and non-emissive electronic transitions. This simple strategy provides a flexible route for generating materials with specific, phosphorescent properties and is an exciting alternative to approaches relying on the synthesis of custom-made luminescent organic molecules. Materials exhibiting room temperature phosphorescence (RTP) with short afterglow are desirable for bio-medical applications. Here the authors synthesise a library of compounds with tunable RTP properties, embedding carbon nanodots in non-toxic alkaline-earth carbonate, sulphate and oxalate hosts. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2041-1723 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c54b808b676c7ab9f46fb1e3d1f5780 https://doaj.org/article/023d7185c8d84cf6847cb9afb95cdb0b |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....2c54b808b676c7ab9f46fb1e3d1f5780 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20411723 |
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