First observation of intra-5f fluorescence from an actinyl center:: Np(VI) near-IR emission in Cs2U(Np)O2Cl4

被引：17
|
作者：
Wilkerson, MP
Berg, JM
Hopkins, TA
Dewey, HJ
机构：
[1] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA
[2] Los Alamos Natl Lab, Nucl Mat & Technol Div, Los Alamos, NM USA
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2005年 / 178卷 / 02期
关键词：
neptunyl; neptunyl lifetime; neptunyl luminescence; neptunyl tetrachloride; near-infrared luminescence; 5f-5f;
D O I：
10.1016/j.jssc.2004.07.049
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Fluorescence from an excited 5f state of Np(VI) has been observed in the doped impurity system Cs2U(Np)O2Cl4. This is the first intra-5f fluorescence transition that has been detected at room temperature in a condensed-phase system with an actinyl (An(VI)O-2(2+)) core, and it is a rare example of fluorescence of any kind from non-uranyl ions of this type. The emission originates from an excited state approximately 6890 cm(-1) above the ground state. Its emission spectrum and fluorescence lifetime at 295 K will be discussed. Vibronic structure in the emission spectrum is assigned based on comparison with the detailed analysis of the absorption spectra published by Denning et al. (c) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码：584 / 588
页数：5
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