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Photoswitchable Upconversion Luminescence of Rare‐Earth Nanophosphors with Covalently Grafted Spiropyran
Author(s) -
Zhang Chao,
Xu ChunHu,
Sun LingDong,
Yan ChunHua
Publication year - 2012
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201200446
Subject(s) - spiropyran , photochromism , photon upconversion , luminescence , energy transfer , materials science , covalent bond , nanostructure , nanotechnology , rare earth , green light , photochemistry , optoelectronics , chemistry , physics , engineering physics , organic chemistry , blue light , metallurgy
Going hybrid : A hybrid nanostructure comprising dual‐emissive rare‐earth upconverting nanophosphors and a photochromic spiropyran has been fabricated. The spiropyran could reversibly switch the green emission of the UCNPs, and covalent grafting guarantees a high efficiency of energy transfer, a relatively large on/off ratio, and a good durability.

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