铕（II）和镱（III）阳离子之间的独特光谱重叠和共振能量转移：无量子剪裁。

Unique Spectral Overlap and Resonant Energy Transfer between Europium(II) and Ytterbium(III) Cations: No Quantum Cutting.

机构信息

MOE Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P.R.China.

Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong S.A.R., P.R. China.

出版信息

Angew Chem Int Ed Engl. 2017 Aug 21;56(35):10357-10361. doi: 10.1002/anie.201703331. Epub 2017 Jul 19.

DOI:10.1002/anie.201703331

PMID:28649746

Abstract

Samples of the Ca Sc Si O (CSS) host singly doped with Eu or Yb , doubly doped with Eu and Yb , and triply doped with Ce , Eu and Yb were synthesized by a sol-gel combustion process under reducing conditions. Unlike previous reports of Eu →Yb energy transfer in other systems, the energy transfer is resonant in the CSS host and the transfer efficiency reaches 100 % for lightly doped samples. The transfer mechanism is multipolar rather than electron transfer for the sample compositions employed herein. The emission intensity of Yb is further enhanced by co-doping with Ce in addition to Eu . The quantum efficiencies of the doped materials range between 9 % and 93 %.

摘要

采用溶胶-凝胶燃烧法在还原条件下合成了分别掺杂 Eu 或 Yb、共掺杂 Eu 和 Yb 以及共掺杂 Ce、Eu 和 Yb 的 Ca Sc Si O (CSS) 基质单一组分、双一组分和三一组分样品。与其他体系中 Eu→Yb 能量转移的先前报道不同，在 CSS 基质中能量转移是共振的，对于轻掺杂样品，转移效率达到 100%。对于本文所采用的样品组成，转移机制是多极而不是电子转移。除了 Eu 之外，共掺杂 Ce 还进一步增强了 Yb 的发射强度。掺杂材料的量子效率在 9%到 93%之间。