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LaF 3 : Eu 3+ nanocrystal/PNIPAM nanogels: Preparation, thermosensitive fluorescence performance and use as bioprobes for monitoring drug release
Author(s) -
Yang Yang,
Song Qiusheng,
Gao Kang,
Ma Haihong,
Yang Sensen,
Li Tan
Publication year - 2014
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.39930
Subject(s) - x ray photoelectron spectroscopy , materials science , nanocrystal , fluorescence , transmission electron microscopy , polymerization , photoluminescence , chemical engineering , nanogel , nanotechnology , drug delivery , polymer , composite material , optics , physics , optoelectronics , engineering
Novel core–shell LaF 3 : Eu 3+ nanocrystals/PNIPAM nanogels were prepared by surface‐initiated living radical polymerization. The microstructure and performance of the LaF 3 : Eu 3+ nanocrystals and the hybrid nanogels were characterized by transmission electron microscopy (TEM), X‐ray diffraction (XRD), X‐ray photoelectron spectrometer (XPS), and photoluminescence (PL). The thermosensitive fluorescence behaviors of the core–shell nanogels and the drug release behaviors were investigated by PL at various temperatures. The results suggested that the fluorescence performance of the nanogels was influenced greatly by the ambient temperature, either content of Aspirin absorbed in the nanogels. Compared to other reported systems, our discovery could tell how much the nanogels contain Aspirin by detecting the fluorescence intensity. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 39930.