Optically active uniform potassium and lithium rare earth fluoride   nanocrystals derived from metal trifluroacetate precursors

doi:10.1039/b909145a

CORC > 北京大学 > 化学与分子工程学院

	Optically active uniform potassium and lithium rare earth fluoride nanocrystals derived from metal trifluroacetate precursors
	Du, Ya-Ping ; Zhang, Ya-Wen ; Sun, Ling-Dong ; Yan, Chun-Hua
刊名	dalton transactions
	2009
关键词	DOPED LAF3 NANOPARTICLES SINGLE-SOURCE PRECURSOR NEAR-INFRARED EMISSION MONODISPERSE NANOCRYSTALS SEMICONDUCTOR NANOCRYSTALS CDSE NANOCRYSTALS SHAPE CONTROL TRIFLUOROACETATE PRECURSORS COPRECIPITATION METHOD LUMINESCENT PROPERTIES
DOI	10.1039/b909145a
英文摘要	This paper reports the first systematical synthesis of near-monodisperse potassium and lithium rare earth (RE) fluoride (K(Li)REF(4)) nanocrystals with diverse shapes (cubic KLaF(4) and KCeF(4) wormlike nanowires, nanocubes and nanopolyhedra; cubic LiREF(4) (RE = Pr to Gd, Y) nanopolyhedra; tetragonal LiREF(4) (RE = Tb to Lu, Y) rhombic nanoplates) via co-thermolysis of Li(CF(3)COO) or K(CF(3)COO) and RE(CF(3)COO)(3) in a hot oleic acid/oleylamine/1-octadecene solution. The effects of the solvent composition, reaction temperature and time on the crystal phase purity, shape, and size of the as-prepared nanocrystals have been investigated in detail. The formation of monodisperse nanocrystals is found to strongly depend upon the nature of both alkali metals from Li to K, and the rare earth series from La to Lu and Y. Based on the series of experimental results, a controlled-growth mechanism has also been proposed. In addition, the ease of doping of these as-synthesized host nanocrystals for designed luminescence properties is assessed. For example, monodisperse and single-crystalline Eu(3+) doped KGdF(4), Yb(3+) and Er(3+) co-doped LiYF(4) nanocrystals redispersed in cyclohexane exhibit visible room-temperature red and green emissions under ultraviolet (UV) excitation and near infrared (NIR) 980 nm laser excitation, respectively.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000270593400018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Inorganic & Nuclear; SCI(E); EI; 61; ARTICLE; 40; 8574-8581
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/246659]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Du, Ya-Ping,Zhang, Ya-Wen,Sun, Ling-Dong,et al. Optically active uniform potassium and lithium rare earth fluoride nanocrystals derived from metal trifluroacetate precursors[J]. dalton transactions,2009.
APA	Du, Ya-Ping,Zhang, Ya-Wen,Sun, Ling-Dong,&Yan, Chun-Hua.(2009).Optically active uniform potassium and lithium rare earth fluoride nanocrystals derived from metal trifluroacetate precursors.dalton transactions.
MLA	Du, Ya-Ping,et al."Optically active uniform potassium and lithium rare earth fluoride nanocrystals derived from metal trifluroacetate precursors".dalton transactions (2009).