Upconversion NaGdF₄ nanoparticles for monitoring heat treatment and acid corrosion processes of hair

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• 作者：Yunxin LIU ((刘云新))^a ; ^b ; Zenghui CHEN ((陈增辉))^a ; ^{zhchen1991@126.com" class="auth_mail" title="E-mail the corresponding author} ; Xiaofeng WU ((吴笑峰))^c ; ^{xfwuvip@126.com" class="auth_mail" title="E-mail the corresponding author} ; Shigang HU ((胡仕刚))^c ; Pan HU ((胡 盼))^c ; Yi YU ((余 ))^c ; Gangtao DAI ((戴港涛))^a ; Huanyuan YAN ((颜焕元))^d ; Zhijun TANG ((唐志军))^c
• 关键词：upconversion ; multicolor ; imaging ; mouse ; hair ; rare earths
• 刊名：Journal of Rare Earths
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：34
• 期：5
• 页码：475-482
• 全文大小：1258 K

文摘

Lanthanide-based upconversion core-shell NaGdF₄ nanocrystals with strong upconversion luminescence and biocompatibility were synthesized by the solvothermal method. The multicolor upconversion emission of these NaGdF₄ nanoparticles could be easily obtained by controlling the core-shell compositions. These multicolor core-shell NaGdF₄ upconversion nanocrystals could be employed as fluorescent probes for imaging the mouse hair, by which the porous and scalelike structure of the mouse hair were presented clearly. Meanwhile, it was directly shown by fluorescent signals that the mouse hair could resist the corrosion of the strong acid even when the concentration of hydrochloric acid was increased to 36.5%, but could not avoid the carbonization at high temperature of 400 °C. This procedure based on upconversion fluorescent nanoprobes opens a novel route for investigating the basic physical structure and chemical properties of biological tissue and organism.