化工新型材料

化工新型材料 ›› 2021, Vol. 49 ›› Issue (9) : 126-129. DOI: 10.19817/j.cnki.issn 1006-3536.2021.09.027

新材料与新技术

DPA/CaF₂∶Tb³⁺纳米晶的合成及性能研究

作者信息 +

Synthesis and property of DPA/CaF₂∶Tb³⁺ nanocrystal

Song Limei¹, Meng Xinming¹, Wang Xuan¹, Feng Mancang²

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文章历史 +

Received		Published
2020-05-27		2021-09-20
Issue Date	Revised Date
2021-09-30	2020-05-27

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摘要

采用水热法制备了形貌单一、水分散性好的DPA/CaF₂∶Tb³⁺(DPA为2,6-吡啶二甲酸)发光纳米晶,并对纳米晶的结构以及发光性能进行了研究。采用荧光光谱研究了常见过渡金属离子Cd²⁺、Co²⁺、Cr³⁺、Cu²⁺、Fe³⁺、Mn²⁺、Ni²⁺、Zn²⁺对纳米晶发光的影响。结果表明:Co²⁺、Cr³⁺、Fe³⁺、Mn²⁺这4种离子对DPA/CaF₂∶Tb³⁺纳米晶的发光具有强的猝灭作用,其中Fe³⁺的猝灭作用最强,浓度为5×10^-4mol/L的Fe³⁺对DPA/CaF₂∶Tb³⁺纳米晶在543nm处的荧光强度猝灭了92.75%,并探讨了Fe³⁺猝灭纳米晶的发光机制。

Abstract

DPA/CaF₂∶Tb³⁺ (DPA:2,6-pyridinedicarboxylic acid) luminescent nanocrystals with single morphology and good water dispersibility were synthesized by hydrothermal method.Structure and luminescence properties of the nanocrystals were studied.The influence of Cd²⁺,Co²⁺,Cr³⁺,Cu²⁺,Fe³⁺,Mn²⁺,Ni²⁺ and Zn²⁺ ions on the luminescence of DPA/CaF₂∶Tb³⁺ were studied.The results shown that Co²⁺,Cr³⁺,Fe³⁺ and Mn²⁺ ions had strong quenching effect on the luminescence of the nanocrystals,among which Fe³⁺ had the strongest quenching effect.The quenching effect on the fluorescence intensity of DPA/CaF₂∶Tb³⁺ at 543 nm reached to 92.75% by Fe³⁺ at the concentration of 5×10^-4mol/L,and discussed the quenching mechanism on the luminescence.

关键词

稀土离子 / 过渡金属离子 / 2,6-吡啶二甲酸 / 氟化钙纳米晶 / 发光

Key words

lanthanide ion / transition metal ion / 2,6-pyridinedicarboxylic acid(DPA) / CaF₂ nanocrystal / luminescence

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DPA/CaF₂∶Tb³⁺纳米晶的合成及性能研究[J]. 化工新型材料, 2021, 49(9): 126-129 DOI:10.19817/j.cnki.issn 1006-3536.2021.09.027

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