高度发光的自组织亚 2nm EuOF 纳米线。

Highly luminescent self-organized sub-2-nm EuOF nanowires.

机构信息

Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications & PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing 100871, China.

出版信息

J Am Chem Soc. 2009 Nov 18;131(45):16364-5. doi: 10.1021/ja9080088.

DOI:10.1021/ja9080088

PMID:19902976

Abstract

Monodisperse sub-2-nm EuOF nanowires were obtained by manipulating the fluorophilicity between crystalline seeds and capping surfactant molecules during the thermolysis of Eu(CF(3)COO)(3) in oleic acid (OA) and oleylamine (OM). The uniform EuOF nanowires can self-organize on substrates to form parallel aligned superstructures and display strong Eu(3+)red emissions with high quantum yields of 65% under the UV light excitations due to the presence of dense surface Eu(3+) sites in the ultrathin nanowires as well as the passivation of the surface defects by the capping ligands.

摘要

通过在油酸（OA）和油胺（OM）中热解 Eu(CF3COO)3 时操纵晶种和盖帽表面活性剂分子之间的亲氟性，得到了单分散的小于 2nm 的 EuOF 纳米线。由于在超薄纳米线中存在密集的表面 Eu3+位点以及通过盖帽配体钝化表面缺陷，均匀的 EuOF 纳米线可以在基底上自组装形成平行排列的超结构，并在紫外光激发下显示出强的 Eu3+红色发射，量子产率高达 65%。