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Updated: Dec 29, 2025

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
Published on: November 10, 2017
Reversibly tunable upconversion luminescence by host-guest chemistry
Takaaki Taniguchi1, Tomoaki Murakami, Asami Funatsu
1Graduate School of Science and Technology, Kumamoto University , 2-39-1 Kurokami, Kumamoto 860-8555, Japan.
Abstract:
Tuning upconversion (UPC) luminescence using external stimuli and fields, as well as chemical reactions, is expected to lead to novel and efficient optical sensors. Herein, highly tunable UPC luminescence was achieved through a host-guest chemistry approach. Specifically, interlayer ion exchange reactions reversibly tuned the emission intensity and green-red color of Er/Yb-codoped A2La2Ti3O10 layered perovskite, where A corresponds to proton and alkali metal ions, enabling the visualization of host-guest interactions and reactions.
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