Upconverting PAAm/PNIPAM/NaYF4:Yb:Er hydrogel with enhanced luminescence temperature sensitivity
作者：Jiachang Huang, Benzhao He, Zehong Cheng, Li Zhou*
關鍵字：Upconversion，NaYF4， hydrogel，temperature sensitivity
論文來源：期刊
具體來源：J. Lumin. 2015, 160, 254-257
發表時間：2015年
We present
a one-step approach to combine
the functional features of upconverting
NaYF4:Yb:Er nanoparticles and thermosensitive poly(N-isopropylacrylamide) (PNIPAM) for luminescence thermometry. Dual-functional hydrogel that simultaneously possess strong upconversion luminescence
(UL) and temperature responsibility were fabricated based on the crosslinking
of poly(acrylamide) in the presence of PNIPAM and NaYF4:Yb:Er nanoparticles.
The obtained hydrogel exhibited reversibly temperature-dependent UL and highly
enhanced sensibility. The luminescence temperature
sensitivity reached 1.9 % per oC and 0.7% per oC
in the range of 27-33 oC and 35-45 oC, respectively. The
maximum sensitivity could even reach 26.5 % per oC in the range of 33-35 oC. Considering the facile fabrication process and fine luminescence thermometry performance, this study
thus opens up new opportunities for preparing highly sensitive temperature
sensors.