Near-infrared to visible and near-infrared upconversion of monoclinic Gd2O3:Yb3+/Tm3+ nanoparticles prepared by laser ablation in liquid for fluorescence imaging
Near-infrared to visible and near-infrared upconversion of monoclinic Gd2O3:Yb3+/Tm3+ nanoparticles prepared by laser ablation in liquid for fluorescence imaging
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液体中激光烧蚀制备的单斜晶 Gd2O3:Yb3 /Tm3 纳米粒子的近红外到可见光和近红外上转换用于荧光成像
DOI：
10.1016/j.apsusc.2014.11.105
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发表时间：
2015-09-01
影响因子：
6.7
通讯作者：
Chen, Dihu
中科院分区：
文献类型：
--
作者：
Liu, Jun;Tian, Xiumei;Chen, Dihu
上转换纳米粒子（UCNPs）在荧光成像中具有很大的应用潜力。采用激光烧蚀法制备了平均直径为7.18 nm的高晶Gd2O3:Yb3+/Tm3+ UCNPs。在980 nm的激发下，lal衍生的Gd2O3:Yb3+/Tm3+ UCNPs获得了可见的蓝色荧光，可用于活细胞成像。同时，观察到比可见荧光更有效的近红外（NIR）发射（-800 nm）。Gd2O3:Yb3+/Tm3+ UCNPs的激发和发射均在生物组织的“光传输窗口”内，具有很大的深部组织成像潜力。(C) 2014 Elsevier B.V.版权所有
Upconversion nanoparticles (UCNPs) possess great potential for application in fluorescence imaging. Here, the high crystalline Gd2O3:Yb3+/Tm3+ UCNPs with the average diameter of 7.18 nm were fabricated by laser ablation in liquid (LAL). Under excitation at 980 nm, visible blue fluorescence of the LAL-derived Gd2O3:Yb3+/Tm3+ UCNPs is obtained and can be used for live cells imaging. Meanwhile, more efficient near-infrared (NIR) emission (-800 nm) than the visible fluorescence is observed. The excitation and emission of Gd2O3:Yb3+/Tm3+ UCNPs are both within the "optical transmission window" of biological tissue, capable of great potential for deep tissues imaging. (C) 2014 Elsevier B.V. All rights reserved.