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Issue 26, 2017
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PbLnB7O13 (Ln = Tb or Eu): a new type of layered polyborate with multi-colour light emission properties

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Abstract

Two new lead rare-earth polyborates, PbTbB7O13 and PbEuB7O13, have been successfully synthesized via a high temperature molten salt method. Single crystal X-ray diffraction analysis reveals that they are isostructural and feature a 2D layer structure that contains alternating layers of [B7O13] and [Tb]. The [B7O13] layer is constructed of BO3 and BO4 groups with the fundamental building block of B7O17 (3Δ4□: <Δ2□>Δ<Δ2□>). Solid solutions of PbTb1−xEuxB7O13 (x = 0–1) were prepared via a solid state reaction and the photoluminescence properties were studied. The results show that under UV or near-UV excitation, the luminescence colour of samples of PbTb1−xEuxB7O13 (x = 0–1) can be tuned from green through yellow to red by simply adjusting the relative Eu3+ and Tb3+ concentrations, because of the Tb3+ → Eu3+ energy transfer mechanism.

Graphical abstract: PbLnB7O13 (Ln = Tb or Eu): a new type of layered polyborate with multi-colour light emission properties

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Publication details

The article was received on 28 Apr 2017, accepted on 14 Jun 2017 and first published on 14 Jun 2017


Article type: Paper
DOI: 10.1039/C7DT01558E
Citation: Dalton Trans., 2017,46, 8673-8679
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    PbLnB7O13 (Ln = Tb or Eu): a new type of layered polyborate with multi-colour light emission properties

    D. Zhao, F. Ma, Y. Fan, L. Zhang, R. Zhang and P. Duan, Dalton Trans., 2017, 46, 8673
    DOI: 10.1039/C7DT01558E

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