超小 Gd(2)O(3)纳米粒子：吸收和发射性质。
Ultra small Gd(2)O(3) nanoparticles: Absorption and emission properties.
机构信息
School of AME and Mawson Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, SA-5095, Australia.
出版信息
J Colloid Interface Sci. 2011 Feb 15;354(2):592-6. doi: 10.1016/j.jcis.2010.11.012. Epub 2010 Nov 12.
In this paper, we report a facile method for synthesis of ultra small (1-3nm) gadolinium oxide (Gd(2)O(3)) nanoparticles using citric acid (CA) as a capping agent. The dependence of nanoparticle (NP) size on the ratio between CA and gadolinium (Gd) is investigated. Absorption properties of the ultra small Gd(2)O(3) NPs in UV region have four characteristic peaks at 312nm, 274nm, 253nm and 228nm. Finally, we show that the Gd(2)O(3) nanoparticles synthesized by this method induce triplet emission (phosphorescence) from CA and EG in the NIR region.
在本文中，我们报告了一种使用柠檬酸（CA）作为封端剂合成超小（1-3nm）氧化钆（Gd2O3）纳米粒子的简便方法。研究了纳米粒子（NP）尺寸与CA和钆（Gd）之间比例的关系。超小Gd2O3 NPs 在紫外区的吸收特性在 312nm、274nm、253nm 和 228nm 处有四个特征峰。最后，我们表明，通过这种方法合成的 Gd2O3 纳米粒子在近红外区诱导 CA 和 EG 的三重态发射（磷光）。
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