Vietnam Journal of Science, Technology and Engineering's Vol. 59 Number 3 is now available to all readers. 

The cover illustrates the schematic illustration of the synthesis of alpha-NaYF4:Yb3+/Er3+/PVP/MOF multilayer nanocrystals. The precursor PVP-capped alpha-NaYF4:Yb3+/Er3+ nanospheres were used as the templates for preparing the alpha- NaYF4:Yb3+/Er3+/PVP/MOFs multilayer nanocrystals with a self-template method. The UCL spectra studies demonstrated that the integrated intensity ratio of green to red emissions increased from 0.13 to 1.01 when adding the layers of PVP, PVP/ZIF-8 or PVP/MIL-100 on the surface of the alpha- NaYF4:Yb3+/Er3+ nanoparticles.

Please see the article "Synthesis, characterization and up-conversion luminescence properties of alpha-NaYF4:Yb3+/Er3+/PVP/MOF multilayer nanocrystals" in pages 79-84 of this issue for more details.

Published: 2017-09-27

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Synthesis, characterization and up-conversion luminescence properties of alpha-NaYF4:Yb3+/Er3+/PVP/MOFs multilayer nanocrystals

Thi Kieu Giang Lam, Lukasz Marciniak, Quang Huy Tran, Manh Tien Dinh, Duc Chinh Vu, Vu Nguyen, Thu Huong Tran, Thi Khuyen Hoang, Thanh Huong Nguyen, Duc Roan Pham, Thanh Binh Nguyen, Quoc Minh Le (Author)