水溶性β-NaYF_4:Yb~(3+),Tb~(3+)@β-NaYF_4核壳纳米颗粒的上转换荧光增强Enhanced Up-conversion of Water-soluble β-NaYF_4:Yb~(3+),Tb~(3+)@β-NaYF_4 Core-shell Nanoparticles
于志鹏;林林;王哲哲;冯卓宏;郑标;杨开禧;郑志强;
摘要(Abstract)：
利用酸洗改性对共沉淀法制得的油性β-NaYF_4:Yb(3+),Tb(3+),Tb(3+)@β-NaYF4纳米颗粒进行改性处理,获得水性β-NaYF4:Yb(3+)@β-NaYF4纳米颗粒进行改性处理,获得水性β-NaYF4:Yb(3+),Tb(3+),Tb(3+)@β-NaYF4纳米颗粒.表征了制得样品的形貌和上转换荧光特性.结果表明制得的样品分散性好,形貌均一.在相同掺杂浓度和溶液浓度下,水性β-NaYF_4:Yb(3+)@β-NaYF4纳米颗粒.表征了制得样品的形貌和上转换荧光特性.结果表明制得的样品分散性好,形貌均一.在相同掺杂浓度和溶液浓度下,水性β-NaYF_4:Yb(3+),Tb(3+),Tb(3+)@β-NaYF4纳米颗粒溶液的上转换荧光强度比油性β-NaYF4:Yb(3+)@β-NaYF4纳米颗粒溶液的上转换荧光强度比油性β-NaYF4:Yb(3+),Tb(3+),Tb(3+)@β-NaYF_4和水性β-NaYF4:Yb(3+)@β-NaYF_4和水性β-NaYF4:Yb(3+),Tb(3+),Tb(3+)纳米颗粒溶液的双光子上转换荧光分别增强了1.1倍和37倍,三光子上转换荧光分别增强了1.5倍和3.9倍.水性β-NaYF4:Yb(3+)纳米颗粒溶液的双光子上转换荧光分别增强了1.1倍和37倍,三光子上转换荧光分别增强了1.5倍和3.9倍.水性β-NaYF4:Yb(3+),Tb(3+),Tb(3+)@β-NaYF_4纳米颗粒外层存在隔离壳层,导致改性处理既去除了油酸又获得较强的上转换荧光.
关键词(KeyWords)： 纳米颗粒;核壳结构;水性;上转换;氟钇化物
基金项目(Foundation): 国家自然科学基金青年基金资助项目(11204039;51202033);; 福建省自然科学基金资助项目(2015J01243;2016J01213;2017J01399);; 福建省教育厅科技项目(JA13084)
作者(Authors): 于志鹏;林林;王哲哲;冯卓宏;郑标;杨开禧;郑志强;
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