Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7783587 | Carbohydrate Polymers | 2018 | 29 Pages |
Abstract
The lanthanide complexes [Yb(fac)3(H2O)2, Yb(tta)3(H2O)2, Nd(tta)3(H2O)2] functionalized nanofibrillated cellulose (Ln-NFC) nanopapers with near-infrared (NIR) luminescence and high transparency are rapidly fabricated after solvent exchange using a simple suction filtration film-making method. The effects of NFC and lanthanide complexes content on their photophysical properties of Ln-NFC nanopapers and their mechanism of UV filters are fully investigated. With increasing lanthanide complexes content in the Ln-NFC nanopaper, their transmittances are gradually decreased while their NIR luminescences are obviously increased. Yb-fac NFC nanopaper has high UVB block rate at 298â¯nm, whereas the high UVA block ratio of Ln-tta NFC nanopaper is observed at 345â¯nm. Ln-NFC nanopapers show a much higher photostability without decomposition under UV irradiation at 365â¯nm over 5â¯h. The emission spectra of the Ln-NFC nanopaper process the NIR luminescence of the corresponding lanthanide ions through the efficient triplet-triplet energy transfer process. Ln-NFC nanopapers can bring a brilliant future for UV filters, labeling fields and marking soft materials application.
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Authors
Bailiang Xue, Zhao Zhang, Yongchang Sun, Junjie Wang, Huie Jiang, Min Du, Congcong Chi, Xinping Li,