Synthesis and Photoluminescence of Colloidal Solution Containing Layered Rare-earth Hydroxide Nanosheets
Synthesis and Photoluminescence of Colloidal Solution Containing Layered Rare-earth Hydroxide Nanosheets
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DOI：
10.5012/bkcs.2012.33.2.601
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发表时间：
2012-02-20
影响因子：
1.7
通讯作者：
Byeon, Song-Ho
中科院分区：
文献类型：
--
作者：
Lee, Byung-Il;Bae, Jung-soo;Byeon, Song-Ho
本文介绍了层状稀土氢氧化物的亲有机改性方法。在非极性溶剂中，通过硝酸根离子与油酸根离子的交换反应，改性了RE_2（OH）_（5）NO_3中心点nH（2）O（RE=Eu（LEuH），Tb（LTbH））的层间性质。长链油酸阴离子在RE_2（OH）_（5）NO_3中心点nH_（2）O廊道中的双层排列能有效地削弱氢氧化物层的堆积。层间空间的高度亲有机环境促进了甲苯的引入，以将层状结构分层成它们各自的片材。当用365 nm UV照射时，得到的含有LEuH和LTbH纳米片的甲苯的透明胶体溶液分别产生典型的红色和绿色发射，其是肉眼可见的。
An aspect of organophilic modification for the delamination is described for the layered rare-earth hydroxides in this paper. The interlayer property of RE2(OH)(5)NO3 center dot nH(2)O, where RE=Eu (LEuH) and Tb (LTbH), was modified by the exchange reaction of nitrate ion with oleate anion that is one of the representative dispersion agents in nonpolar solvents. The bilayer arrangement of long oleate anions in the gallery of RE2(OH)(5)NO3 center dot nH(2)O could effectively weaken the stacking of the hydroxide layers. Highly organophilic environment of the interlayer space promoted the introduction of toluene to delaminate the layered structure into their individual sheets. When irradiated with 365 nm UV, the resulting transparent colloidal solutions of toluene containing LEuH and LTbH nanosheets yielded typical red and green emissions, respectively, which are visible to the naked eye.