LiSr2SiO4H, an Air-Stable Hydride as Host for Eu(II) Luminescence

被引：23

作者：

Gehlhaar, Florian ^{[1
]}

Finger, Raphael ^{[1
]}

Zapp, Nicolas ^{[1
]}

Bertmer, Marko ^{[2
]}

Kohlmann, Holger ^{[1
]}

机构：

[1] Univ Leipzig, Inorgan Chem, D-04103 Leipzig, Germany

[2] Univ Leipzig, Felix Bloch Inst Solid State Phys, D-04103 Leipzig, Germany

来源：

INORGANIC CHEMISTRY | 2018年 / 57卷 / 19期

关键词：

CRYSTAL-STRUCTURE; METAL-HYDRIDES; SR2LISIO4F; FLUORIDE; LATTICES; ENERGY; EU2+; 1ST;

D O I：

10.1021/acs.inorgchem.8b01780

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

LiSr2SiO4H is synthesized by solid-state reaction of LiH and alpha-Sr2SiO4. It crystallizes in space group P2(1)/m (a = 658.63(4) pm, b = 542.36(3) pm, c = 695.01(4) pm, beta = 112.5637(9)degrees) as proven by X-ray and neutron diffraction, is isotypic to LiSr2SiO4F, and exhibits isolated SiO4 tetrahedra. Hydride anions are located in Li2Sr4 octahedra, which share faces to form columns, with H-H distances of 271.18(2) pm. NMR, IR, and Raman spectroscopy, density measurements, elemental analysis, and theoretical calculations confirm these results. Despite its hydridic nature, it is stable in air up to 550 K. When doped with europium, it emits bright yellow-green light with an intensity maximum at 560 nm for Li-Sr1.98Eu0.02SiO4H. Even after treatment in water for several hours, the solid shows luminescence. The broad emission peak is attributed to the allowed 4f(6)5d -> 4f(7) transition of divalent europium. LiSr2SiO4H is the first silicate hydride, a class of compounds that might have potential as host for luminescent materials.

引用

页码：11851 / 11854

页数：4

共 23 条

[1] SR2LISIO4F - SYNTHESIS, STRUCTURE, AND EU(2+) LUMINESCENCE [J].

AKELLA, A ;

KESZLER, DA .

CHEMISTRY OF MATERIALS, 1995, 7 (07) :1299-1302

[2] A Chemical Route Towards Single-Phase Materials with Controllable Photoluminescence [J].

Behrh, Gaganpreet Kaur ;

Serier-Brault, Helene ;

Jobic, Stephane ;

Gautier, Romain .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2015, 54 (39) :11501-11503

[3] Sr6Mg7H26, a new saline high-pressure hydride with Ba6Zn7F26-type structure [J].

Bertheville, B ;

Kohlmann, H ;

Sheptyakov, D ;

Yvon, K .

JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 356 :128-132

[4] TERNARY STRONTIUM-RHODIUM HYBRIDS [J].

BRONGER, W ;

BEISSMANN, R ;

RIDDER, G .

JOURNAL OF ALLOYS AND COMPOUNDS, 1994, 203 (1-2) :91-96

[5] Energy of the first 4f7→4f65d transition of Eu2+ in inorganic compounds [J].

Dorenbos, P .

JOURNAL OF LUMINESCENCE, 2003, 104 (04) :239-260

[6] Recent Developments in the Field of Inorganic Phosphors [J].

Hoeppe, Henning A. .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (20) :3572-3582

[7] Luminescence in Eu2+-doped Ba2Si5N8:: fluorescence, thermoluminescence, and upconversion [J].

Höppe, HA ;

Lutz, H ;

Morys, P ;

Schnick, W ;

Seilmeier, A .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2000, 61 (12) :2001-2006

[8] The crystal structures of EuH2 and EuLiH3 by neutron powder diffraction [J].

Kohlmann, H ;

Yvon, K .

JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 299 (1-2) :L16-L20

[9] Synthesis, crystal structure and magnetism of the mixed metal hydrides Eu1-xSrxMg2H6 (0 ≤ x ≤ 0.6) [J].

Kohlmann, H ;

Yvon, K ;

Wang, Y .

JOURNAL OF ALLOYS AND COMPOUNDS, 2005, 393 (1-2) :11-15

[10] Solid-State Structures and Properties of Europium and Samarium Hydrides [J].

Kohlmann, Holger .

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2010, (18) :2582-2593

← 1 2 3 →