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发明授权
CN105131957B 聚丙烯酸改性的棒状单分散NaGdF4:Yb3+,Er3+上转换荧光粉 有权

聚丙烯酸改性的棒状单分散NaGdF4:Yb3+,Er3+上转换荧光粉
摘要：
本发明公开了一种聚丙烯酸改性的棒状单分散NaGdF4:Yb3+,Er3+上转换荧光粉的制备方法。采用水热法，用聚丙烯酸作表面改性剂，通过调节聚丙烯酸用量，pH值，NaF、NH4HF2和稀土离子总量之间的配比，实现了棒状NaGdF4:Yb3+,Er3+上转换荧光粉的合成，且制得的荧光粉体具有单分散性，该方法制备工艺简单，丰富了NaGdF4:Yb3+,Er3+上转换荧光粉体的表现形式，使得聚丙烯酸改性的棒状单分散NaGdF4:Yb3+,Er3+上转换荧光粉在有序阵列有机‑无机复合薄膜的制备以及光致发光领域中具有广阔的应用前景。
摘要（英）：

The invention discloses a preparing method of polyacrylic acid-modified rodlike monodisperse NaGdF4: Yb<3+> and Er<3+> upconversion fluorescent powder. A hydrothermal method is adopted, polyacrylic acid serves as a surface modifier, by regulating usage of the polyacrylic acid, a pH value and a proportion among NaF, NH4HF2 and total quantity of rare earth ions, synthesis of the rodlike NaGdF4: Yb<3+> and Er<3+> upconversion fluorescent powder is realized, the prepared fluorescent powder has monodispersity, the method is simple in preparing process and enriches a representing manner of the NaGdF4: Yb<3+> and Er<3+> upconversion fluorescent powder, and the polyacrylic acid-modified rodlike monodisperse NaGdF4: Yb<3+> and Er<3+> upconversion fluorescent powder has broad application prospect in preparing of a sequential array organic-inorganic composite thin film and the photoluminescence field.

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