Luminescent nitridophosphates CaP2 N4 :Eu(2+) , SrP2 N4 :Eu(2+) , BaP2 N4 :Eu(2+) , and BaSr2 P6 N12 :Eu(2.)

Chemistry : a European Journal
Florian J PucherWolfgang Schnick

Abstract

Nitridophosphates MP2 N4 :Eu(2+) (M=Ca, Sr, Ba) and BaSr2 P6 N12 :Eu(2+) have been synthesized at elevated pressures and 1100-1300 °C starting from the corresponding azides and P3 N5 with EuCl2 as dopant. Addition of NH4 Cl as mineralizer allowed for the growth of single crystals. This led to the successful structure elucidation of a highly condensed nitridophosphate from single-crystal X-ray diffraction data (CaP2 N4 :Eu(2+) (P63 , no. 173), a=16.847(2), c=7.8592(16) Å, V=1931.7(6) Å(3) , Z=24, 2033 observed reflections, 176 refined parameters, wR2 =0.096). Upon excitation by UV light, luminescence due to parity-allowed 4f(6) ((7) F)5d(1) →4f(7) ((8) S7/2 ) transition was observed in the orange (CaP2 N4 :Eu(2+) , λmax =575 nm), green (SrP2 N4 :Eu(2+) , λmax =529 nm), and blue regions of the visible spectrum (BaSr2 P6 N12 :Eu(2+) and BaP2 N4 :Eu(2+) , λmax =450 and 460 nm, respectively). Thus, the emission wavelength decreases with increasing ionic radius of the alkaline-earth ions. The corresponding full width at half maximum values (2240-2460 cm(-1) ) are comparable to those of other known Eu(2+) -doped (oxo)nitrides emitting in the same region of the visible spectrum. Following recently described quaternary Ba3 P5 N10 Br:Eu(...Continue Reading

References

Jun 15, 2007·Chemistry : a European Journal·Friedrich W KarauWolfgang Schnick
Apr 8, 2009·Angewandte Chemie·Henning A Höppe
Feb 28, 2014·Angewandte Chemie·Alexey MarchukWolfgang Schnick
Jan 13, 2015·Angewandte Chemie·Alexey Marchuk, Wolfgang Schnick
Jun 2, 2011·The Journal of Physical Chemistry Letters·Chun Che Lin, Ru-Shi Liu

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Citations

Mar 27, 2018·Chemistry : a European Journal·Philipp StrobelWolfgang Schnick
Nov 30, 2018·Angewandte Chemie·Simon D Kloß, Wolfgang Schnick
Oct 10, 2019·Angewandte Chemie·Sebastian VogelWolfgang Schnick
Jan 17, 2020·Chemistry : a European Journal·Sebastian WendlWolfgang Schnick
Feb 8, 2020·Chemistry : a European Journal·Sebastian WendlWolfgang Schnick
Apr 9, 2020·Chemistry : a European Journal·Sebastian WendlWolfgang Schnick
Sep 10, 2015·Angewandte Chemie·Simon David Kloss, Wolfgang Schnick
Nov 15, 2017·Chemistry : a European Journal·Eva-Maria BertschlerWolfgang Schnick
Nov 18, 2020·Angewandte Chemie·Sebastian WendlWolfgang Schnick

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