NDLI: Dually functioned core-shell NaYF4:Er3+/Yb3+@NaYF4:Tm3+/Yb3+ nanoparticles as nano-calorifiers and nano-thermometers for advanced photothermal therapy.

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Dually functioned core-shell NaYF₄:Er³⁺/Yb³⁺@NaYF₄:Tm³⁺/Yb³⁺ nanoparticles as nano-calorifiers and nano-thermometers for advanced photothermal therapy.

Content Provider	Europe PMC
Author	Zhang, Yanqiu Chen, Baojiu Xu, Sai Li, Xiangping Zhang, Jinsu Sun, Jiashi Zheng, Hui Tong, Lili Sui, Guozhu Zhong, Hua Xia, Haiping Hua, Ruinian
Abstract	To realize photothermal therapy (PTT) of cancer/tumor both the photothermal conversion and temperature detection are required. Usually, the temperature detection in PTT needs complicated instruments, and the therapy process is out of temperature control in the present investigations. In this work, we attempt to develop a novel material for achieving both the photothermal conversion and temperature sensing and control at the same time. To this end, a core-shell structure with NaYF₄:Er³⁺/Yb³⁺ core for temperature detection and NaYF₄:Tm³⁺/Yb³⁺ shell for photothermal conversion was designed and prepared. The crystal structure and morphology of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Furthermore, the temperature sensing properties for the NaYF₄:Er³⁺/Yb³⁺ and core-shell NaYF₄:Er³⁺/Yb³⁺@NaYF₄:Tm³⁺/Yb³⁺ nanoparticles were studied. It was found that the temperature sensing performance of the core-shell nanoparticles did not become worse due to coating of NaYF₄:Tm³⁺/Yb³⁺ shell. The photothermal conversion behaviors were examined in cyclohexane solution based on the temperature response, the NaYF₄:Er³⁺/Yb³⁺@NaYF₄:Tm³⁺/Yb³⁺ core-shell nanoparticles exhibited more effective photothermal conversion than that of NaYF₄:Er³⁺/Yb³⁺ nanoparticles, and a net temperature increment of about 7 °C was achieved by using the core-shell nanoparticles.
Journal	Scientific Reports [Sci Rep]
Volume Number	7
DOI	10.1038/s41598-017-11897-4
PubMed Central reference number	PMC5605608
Issue Number	1
PubMed reference number	28928385
e-ISSN	20452322
Language	English
Publisher	Nature Publishing Group
Publisher Date	2017-09-19
Publisher Place	London
Access Restriction	Open
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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