Synthesis and Photoluminescence of Colloidal Solution Containing Layered Rare-earth Hydroxide Nanosheets

An aspect of organophilic modification for the delamination is described for the layered rare-earth hydroxides in this paper. The interlayer property of $RE_2(OH)_5NO_3{\cdot}nH_2O$, where RE=Eu (LEuH) and Tb (LTbH), was modified by the exchange reaction of nitrate ion with oleate anion that is one...

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Bibliographic Details
Published inBulletin of the Korean Chemical Society Vol. 33; no. 2; pp. 601 - 607
Main Authors Lee, Byung-Il, Bae, Jung-Soo, Lee, Eun-Su, Byeon, Song-Ho
Format Journal Article
LanguageKorean
Published 2012
Subjects
Nanosheets
Rare-earths
Photoluminescence
Colloidal solution
Layered hydroxides
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Summary:An aspect of organophilic modification for the delamination is described for the layered rare-earth hydroxides in this paper. The interlayer property of $RE_2(OH)_5NO_3{\cdot}nH_2O$, 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 $RE_2(OH)_5NO_3{\cdot}nH_2O$ 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.
Bibliography:KISTI1.1003/JNL.JAKO201208636393353
ISSN:0253-2964
1229-5949