Enhanced upconversion luminescence and single-band red emission of NaErF4 nanocrystals via Mn2+ doping
Enhanced upconversion luminescence and single-band red emission of NaErF4 nanocrystals via Mn2+ doping
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通过Mn2+掺杂增强NaErF4纳米晶的上转换发光和单波段红光发射
DOI：
10.1016/j.jallcom.2014.08.174
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发表时间：
2015-01
影响因子：
6.2
通讯作者：
Li, Zheng
中科院分区：
文献类型：
--
作者：
Wang, Haibo;Lu, Wei;Yi, Zhigao;Rao, Ling;Zeng, Songjun (曾松军);Li, Zheng
本文采用一种简单温和的溶剂热方法成功地合成了单分散的NaErF 4：Yb，Mn纳米粒子。通过X射线衍射、透射电子显微镜和分光光度计对所制备的纳米颗粒进行了表征。这些纳米颗粒的晶相、尺寸、形态和上转换（UC）性质可以通过掺杂Mn 2+容易地调节。随着Mn 2+含量的增加，NaErF 4：Yb纳米颗粒的晶相由六方晶转变为立方晶，并出现了新的正交晶相NaMn 3F 10。随着Mn ~（2+）掺杂量的增加，NaErF_4：Yb的形貌由纳米盘状转变为纳米立方体，再转变为大片状。此外，UC发光（UCL）的强度可以通过增加Mn 2+含量增强。有趣的是，当Mn 2+含量达到20%时，可以实现单带红光发射。这主要归因于Er ~（3+）和Mn ~（2+）之间的有效能量转移。增强的UCL强度和单波段红色UCL使这些NaErF 4：Yb/Mn NPs成为光学生物成像的理想探针，这是由于红光的低组织吸收和深组织穿透。
In this paper, the monodispersed NaErF4:Yb, Mn nanoparticles (NPs) were successfully synthesized by a simple and mild solvothermal method. The as-prepared NPs were characterized by X-ray diffraction, transmission electron microscopy, and spectrophotometer. The crystal phase, size, morphology, and upconversion (UC) properties of these NPs can be readily tuned by doping Mn2+. With increasing Mn2+contents, the crystal phase of NaErF4:Yb NPs was transferred from hexagonal to cubic, and then a new orthorhombic phase NaMn3F10appeared. The morphology of NaErF4:Yb was tuned from nanodisks to nanocubes and then to large nanoflakes with increasing Mn2+dopant contents. Moreover, the UC luminescence (UCL) intensity can be enhanced by increasing Mn2+content. Interestingly, single-band red emission can be achieved when the Mn2+content reaches 20%. This is mainly ascribed to the efficient energy transfer between Er3+and Mn2+. The enhanced UCL intensity and single-band red UCL make these NaErF4:Yb/Mn NPs ideal probes for optical bioimaging owing to the low tissue absorption and deep tissue penetration of red light.
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影响因子：
6.2
作者：
Li Li-Li;Huihui Lin;Xiaoqi Zhao;Yongjie Wang;Xianju Zhou;Chonggeng Ma;Xiantao Wei
通讯作者：
Li Li-Li;Huihui Lin;Xiaoqi Zhao;Yongjie Wang;Xianju Zhou;Chonggeng Ma;Xiantao Wei
高品质多功能NaErF4纳米晶体：结构控制合成、相诱导多色发射和可调磁性能
影响因子：
6.4
作者：
Yi, Zhigao;Rao, Ling;Liu, Hongrong;Zeng, Songjun
通讯作者：
Zeng, Songjun
影响因子：
6.7
作者：
Haibo Wang;W. Lu;Tianmei Zeng;Zhigao Yi;L. Rao;Hongrong Liu;S. Zeng
通讯作者：
Haibo Wang;W. Lu;Tianmei Zeng;Zhigao Yi;L. Rao;Hongrong Liu;S. Zeng
影响因子：
62.1
作者：
Kobayashi, Hisataka;Ogawa, Mikako;Alford, Raphael;Choyke, Peter L.;Urano, Yasuteru
通讯作者：
Urano, Yasuteru
影响因子：
6.7
作者：
Li, Chunxia;Liu, Jinliang;Zhang, Yong
通讯作者：
Zhang, Yong