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Photoluminescence of Visible and NIR‐Emitting Lanthanide‐Doped Bismuth‐Organic Materials
Author(s) -
Batrice Rami J.,
Ayscue R. Lee,
Adcock Alyssa K.,
Sullivan Benjamin R.,
Han Sae Young,
Piccoli Philip M.,
Bertke Jeffery A.,
Knope Karah E.
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201706143
Subject(s) - lanthanide , bismuth , europium , materials science , photoluminescence , cerium , terbium , samarium , inorganic chemistry , luminescence , chemistry , analytical chemistry (journal) , nuclear chemistry , ion , organic chemistry , optoelectronics , metallurgy
A bismuth‐organic compound containing 2,2′:6′2“‐terpyridine (terpy) and 2‐thiophenecarboxylate (TC), of the general formula (terpy)Bi( κ 2 ‐TC) 3 ⋅ 0.47 H 2 O ( BiOM‐1 ), has been synthesized under hydrothermal conditions. Addition of a lanthanide nitrate solution to the reaction mixture led to statistical replacement of the bismuth centers, and yielded isomorphous lanthanide containing compounds Bi 1− x Ln x OM‐1 (Ln=Nd, Sm, Eu, Tb, Dy, Er, and Yb) that showed bismuth and/or ligand sensitized lanthanide‐centered emission, and the first example of NIR emission from a lanthanide doped BiOM. The structure was determined by single‐crystal X‐ray diffraction, and the level and uniformity of lanthanide ion incorporation into the bismuth host was determined by ICP‐OES and electron microprobe analysis. For the visible emitters, lifetime data and quantum yields are presented. A high efficiency of sensitization was calculated for the europium analog (50.1 %), showing significant improvement over previously reported europium thiophenecarboxylates. These novel materials may provide strategies to address concerns over the long‐term sustainability of the rare earth elements, especially relating to optical devices.